Merge pull request #74 from gaze-network/develop

Release 0.7.0

.dockerignore

@@ -0,0 +1,18 @@
+.git
+.gitignore
+.github
+.vscode
+**/*.md
+**/*.log
+.DS_Store
+
+# Docker
+Dockerfile
+.dockerignore
+docker-compose.yml
+
+# Go
+.golangci.yaml
+cmd.local
+config.*.y*ml
+config.y*ml

.github/CODE_OF_CONDUCT.md

@@ -0,0 +1 @@
+# Contributor Covenant Code of Conduct

.github/CONTRIBUTING.md

@@ -0,0 +1,34 @@
+# Contributing
+
+Please note: we have a [code of conduct](https://github.com/gaze-network/gaze-indexer/blob/main/.github/CODE_OF_CONDUCT.md), please follow it in all your interactions with the Gaze Network project.
+
+## Pull Requests or Commits
+
+#### Message structured
+
+```plaintext
+<type>(optional scope):<description>
+```
+
+The `<type>` must be one of the following:
+
+> feat:, refactor:, fix:, doc:, style:, perf:, test:, chore:, ci:, build:
+
+- feat(runes): add Runes module to the project
+- refactor: change project structure
+- fix(btc): fix chain reorganization issue
+- doc: update \`run\` command documentation
+- style: fix linting issues
+- perf: improve performance of the bitcoin node datasource
+- test(runes): add unit tests for etching logic
+- chore: bump dependencies versions
+- ci: update CI configuration
+- build: update Dockerfile to use alpine
+
+# 👍 Contribute
+
+If you want to say **thank you** and/or support the active development of `Fiber`:
+
+1. Add a [GitHub Star](https://github.com/gaze-network/gaze-indexer/stargazers) to the project.
+2. Follow and mention our [Twitter (𝕏)](https://twitter.com/Gaze_Network).
+3. Write a review or tutorial on [Medium](https://medium.com/), [Dev.to](https://dev.to/) or personal blog.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,22 @@
+## Description
+
+Please provide a clear and concise description of the changes you've made and the problem they address. Include the purpose of the change, any relevant issues it solves, and the benefits it brings to the project. If this change introduces new features or adjustments, highlight them here.
+
+Fixes # (issue)
+
+## Type of change
+
+What types of changes does your code introduce to Appium?
+_Put an `x` in the boxes that apply_
+
+- [ ] Bugfix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Enhancement (improvement to existing features and functionality)
+- [ ] Documentation update (changes to documentation)
+- [ ] Performance improvement (non-breaking change which improves efficiency)
+- [ ] Code consistency (non-breaking change which improves code reliability and robustness)
+
+## Commit formatting
+
+Please follow the commit message conventions for an easy way to identify the purpose or intention of a commit. Check out our commit message conventions in the [CONTRIBUTING.md](https://github.com/gaze-network/gaze-indexer/blob/main/.github/CONTRIBUTING.md#pull-requests-or-commits)

.github/workflows/code-analysis.yml

@@ -0,0 +1,80 @@
+name: Code Analysis & Test
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - develop
+      - main
+    paths:
+      - "go.mod"
+      - "go.sum"
+      - "**.go"
+      - ".golangci.yaml"
+      - ".github/workflows/code-analysis.yml"
+
+jobs:
+  lint:
+    strategy:
+      matrix:
+        os: ["ubuntu-latest"]
+    name: Lint (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: "0"
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version-file: "go.mod"
+          cache-dependency-path: "**/*.sum"
+          cache: true # caching and restoring go modules and build outputs.
+
+      - name: Lint
+        uses: reviewdog/action-golangci-lint@v2
+        with: # https://github.com/reviewdog/action-golangci-lint#inputs
+          go_version_file: "go.mod"
+          workdir: ./
+          golangci_lint_flags: "--config=./.golangci.yaml --verbose --new-from-rev=${{ github.event.pull_request.base.sha }}"
+          fail_on_error: true
+  test:
+    strategy:
+      matrix:
+        os: ["ubuntu-latest", "macos-latest", "windows-latest"]
+        go-version: ["1.22.x", "1.x"] # minimum version and latest version
+    name: Test (${{ matrix.os }}/${{ matrix.go-version }})
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: "0"
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: ${{ matrix.go-version }}
+          cache: true # caching and restoring go modules and build outputs.
+      - run: echo "GOVERSION=$(go version)" >> $GITHUB_ENV
+
+      - name: Touch test result file
+        run: echo "" > test_output.json
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Test
+        run: go test -json ./... > test_output.json
+
+      - name: Summary Test Results
+        if: always()
+        uses: robherley/go-test-action@v0
+        with:
+          fromJSONFile: test_output.json
+
+      - name: Annotate Test Results
+        if: always()
+        uses: guyarb/golang-test-annotations@v0.5.1
+        with:
+          test-results: test_output.json

.github/workflows/sqlc-verify.yml

@@ -0,0 +1,28 @@
+name: Sqlc ORM Framework Verify
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - develop
+      - main
+    paths:
+      - "sqlc.yaml"
+      - "**.sql"
+      - ".github/workflows/sqlc-verify.yml"
+
+jobs:
+  sqlc-diff:
+    name: Sqlc Diff Checker
+    runs-on: "ubuntu-latest" # "self-hosted", "ubuntu-latest", "macos-latest", "windows-latest"
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: "0"
+
+      - name: Setup Sqlc
+        uses: sqlc-dev/setup-sqlc@v4
+        with:
+          sqlc-version: "1.27.0"
+
+      - name: Check Diff
+        run: sqlc diff

.golangci.yaml

@@ -51,6 +51,8 @@ linters:
     - prealloc # performance - Find slice declarations that could potentially be pre-allocated, https://github.com/alexkohler/prealloc
     - gosec # bugs - Inspects source code for security problems
     - wrapcheck # style, error - Checks that errors returned from external packages are wrapped, we should wrap the error from external library
+    - depguard # import - Go linter that checks if package imports are in a list of acceptable packages.
+    - sloglint # style, format Ensure consistent code style when using log/slog.
     ### Annoying Linters
     # - dupl # style - code clone detection
 
@@ -66,20 +68,39 @@ linters-settings:
   misspell:
     locale: US
     ignore-words: []
+  errcheck:
+    exclude-functions:
+      - (github.com/jackc/pgx/v5.Tx).Rollback
   wrapcheck:
     ignoreSigs:
       - .Errorf(
       - errors.New(
       - errors.Unwrap(
+      - errors.Join(
       - .Wrap(
       - .Wrapf(
       - .WithMessage(
       - .WithMessagef(
       - .WithStack(
+      - errs.NewPublicError(
+      - errs.WithPublicMessage(
+      - withstack.WithStackDepth(
     ignoreSigRegexps:
       - \.New.*Error\(
-    ignorePackageGlobs:
-      - "github.com/gofiber/fiber/*"
   goconst:
     ignore-tests: true
     min-occurrences: 5
+  depguard:
+    rules:
+      main:
+        # Packages that are not allowed.
+        deny:
+          - pkg: "github.com/pkg/errors"
+            desc: Should be replaced by "cockroachdb/errors" or "cleverse/go-utilities" package
+  sloglint:
+    attr-only: true
+    key-naming-case: snake
+    args-on-sep-lines: true
+  gosec:
+    excludes:
+      - G115

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+  "recommendations": ["dotenv.dotenv-vscode", "golang.go"]
+}

.vscode/settings.json

@@ -0,0 +1,82 @@
+{
+  "editor.formatOnSave": true,
+  "files.exclude": {
+    "**/.git": true,
+    "**/.svn": true,
+    "**/.hg": true,
+    "**/CVS": true,
+    "**/.DS_Store": true
+  },
+  "search.exclude": {
+    "**/node_modules": true,
+    "**/build": true,
+    "**/dist": true
+  },
+  "[json]": {
+    "editor.formatOnSave": true,
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  // Golang
+  "[go]": {
+    "editor.formatOnSave": true,
+    "editor.codeActionsOnSave": {
+      "source.organizeImports": "explicit"
+    },
+    "editor.codeLens": true
+  },
+  "go.useLanguageServer": true,
+  "go.lintTool": "golangci-lint",
+  "go.lintFlags": ["--fix"],
+  "go.lintOnSave": "package",
+  "go.toolsManagement.autoUpdate": true,
+  "gopls": {
+    "formatting.gofumpt": true, // https://github.com/mvdan/gofumpt
+    "ui.codelenses": {
+      "gc_details": true
+    },
+    "build.directoryFilters": ["-**/node_modules"],
+    "ui.semanticTokens": true,
+    "ui.completion.usePlaceholders": false,
+    "ui.diagnostic.analyses": {
+      // https://github.com/golang/tools/blob/master/gopls/doc/analyzers.md
+      "fieldalignment": false,
+      "nilness": true,
+      "shadow": false,
+      "unusedparams": true,
+      "unusedvariable": true,
+      "unusedwrite": true, // ineffective assignment
+      "useany": true
+    },
+    "ui.diagnostic.staticcheck": false, // use golangci-lint instead
+    "ui.diagnostic.annotations": {
+      // CMD+P and run command `Go: Toggle gc details`
+      "bounds": true,
+      "escape": true,
+      "inline": true,
+      "nil": true
+    },
+    "ui.documentation.hoverKind": "FullDocumentation"
+  },
+  "go.editorContextMenuCommands": {
+    // Right click on code to use this command
+    "toggleTestFile": false,
+    "addTags": false,
+    "removeTags": false,
+    "fillStruct": true,
+    "testAtCursor": false,
+    "testFile": false,
+    "testPackage": false,
+    "generateTestForFunction": true,
+    "generateTestForFile": false,
+    "generateTestForPackage": false,
+    "addImport": false,
+    "testCoverage": false,
+    "playground": false,
+    "debugTestAtCursor": false,
+    "benchmarkAtCursor": false
+  },
+  "dotenv.enableAutocloaking": false,
+  "protoc": {
+    "options": ["--proto_path=pb"]
+  }
+}

Dockerfile

@@ -0,0 +1,28 @@
+FROM golang:1.22 as builder
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+RUN --mount=type=cache,target=/go/pkg/mod/ go mod download
+
+COPY ./ ./
+
+ENV GOOS=linux
+ENV CGO_ENABLED=0
+
+RUN --mount=type=cache,target=/go/pkg/mod/ \
+    go build -o main ./main.go
+
+FROM alpine:latest
+
+WORKDIR /app
+
+RUN apk --no-cache add ca-certificates tzdata
+
+COPY --from=builder /app/main .
+COPY --from=builder /app/modules ./modules
+
+# You can set TZ identifier to change the timezone, See https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List
+# ENV TZ=US/Central
+
+ENTRYPOINT ["/app/main"]

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+  Developers that use the GNU GPL protect your rights with two steps:
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+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1 +1,157 @@
-# Gaze Indexer Network
+<!-- omit from toc -->
+
+- [Türkçe](https://github.com/Rumeyst/gaze-indexer/blob/turkish-translation/docs/README_tr.md)
+
+# Gaze Indexer
+
+Gaze Indexer is an open-source and modular indexing client for Bitcoin meta-protocols with **Unified Consistent APIs** across fungible token protocols.
+
+Gaze Indexer is built with **modularity** in mind, allowing users to run all modules in one monolithic instance with a single command, or as a distributed cluster of micro-services.
+
+Gaze Indexer serves as a foundation for building ANY meta-protocol indexers, with efficient data fetching, reorg detection, and database migration tool.
+This allows developers to focus on what **truly** matters: Meta-protocol indexing logic. New meta-protocols can be easily added by implementing new modules.
+
+- [Modules](#modules)
+  - [1. Runes](#1-runes)
+- [Installation](#installation)
+  - [Prerequisites](#prerequisites)
+    - [1. Hardware Requirements](#1-hardware-requirements)
+    - [2. Prepare Bitcoin Core RPC server.](#2-prepare-bitcoin-core-rpc-server)
+    - [3. Prepare database.](#3-prepare-database)
+    - [4. Prepare `config.yaml` file.](#4-prepare-configyaml-file)
+  - [Install with Docker (recommended)](#install-with-docker-recommended)
+  - [Install from source](#install-from-source)
+
+## Modules
+
+### 1. Runes
+
+The Runes Indexer is our first meta-protocol indexer. It indexes Runes states, transactions, runestones, and balances using Bitcoin transactions.
+It comes with a set of APIs for querying historical Runes data. See our [API Reference](https://api-docs.gaze.network) for full details.
+
+## Installation
+
+### Prerequisites
+
+#### 1. Hardware Requirements
+
+Each module requires different hardware requirements.
+| Module | CPU       | RAM  |
+| ------ | --------- | ---- |
+| Runes  | 0.5 cores | 1 GB |
+
+#### 2. Prepare Bitcoin Core RPC server.
+
+Gaze Indexer needs to fetch transaction data from a Bitcoin Core RPC, either self-hosted or using managed providers like QuickNode.
+To self host a Bitcoin Core, see https://bitcoin.org/en/full-node.
+
+#### 3. Prepare database.
+
+Gaze Indexer has first-class support for PostgreSQL. If you wish to use other databases, you can implement your own database repository that satisfies each module's Data Gateway interface.
+Here is our minimum database disk space requirement for each module.
+| Module | Database Storage (current) | Database Storage (in 1 year) |
+| ------ | -------------------------- | ---------------------------- |
+| Runes  | 10 GB                      | 150 GB                       |
+
+#### 4. Prepare `config.yaml` file.
+
+```yaml
+# config.yaml
+logger:
+  output: TEXT # Output format for logs. current supported formats: "TEXT" | "JSON" | "GCP"
+  debug: false
+
+# Network to run the indexer on. Current supported networks: "mainnet" | "testnet"
+network: mainnet
+
+# Bitcoin Core RPC configuration options.
+bitcoin_node:
+  host: "" # [Required] Host of Bitcoin Core RPC (without https://)
+  user: "" # Username to authenticate with Bitcoin Core RPC
+  pass: "" # Password to authenticate with Bitcoin Core RPC
+  disable_tls: false # Set to true to disable tls
+
+# Block reporting configuration options. See Block Reporting section for more details.
+reporting:
+  disabled: false # Set to true to disable block reporting to Gaze Network. Default is false.
+  base_url: "https://indexer.api.gaze.network" # Defaults to "https://indexer.api.gaze.network" if left empty
+  name: "" # [Required if not disabled] Name of this indexer to show on the Gaze Network dashboard
+  website_url: "" # Public website URL to show on the dashboard. Can be left empty.
+  indexer_api_url: "" # Public url to access this indexer's API. Can be left empty if you want to keep your indexer private.
+
+# HTTP server configuration options.
+http_server:
+  port: 8080 # Port to run the HTTP server on for modules with HTTP API handlers.
+
+# Meta-protocol modules configuration options.
+modules:
+  # Configuration options for Runes module. Can be removed if not used.
+  runes:
+    database: "postgres" # Database to store Runes data. current supported databases: "postgres"
+    datasource: "bitcoin-node" # Data source to be used for Bitcoin data. current supported data sources: "bitcoin-node".
+    api_handlers: # API handlers to enable. current supported handlers: "http"
+      - http
+    postgres:
+      host: "localhost"
+      port: 5432
+      user: "postgres"
+      password: "password"
+      db_name: "postgres"
+      # url: "postgres://postgres:password@localhost:5432/postgres?sslmode=prefer" # [Optional] This will override other database credentials above.
+```
+
+### Install with Docker (recommended)
+
+We will be using `docker-compose` for our installation guide. Make sure the `docker-compose.yaml` file is in the same directory as the `config.yaml` file.
+
+```yaml
+# docker-compose.yaml
+services:
+  gaze-indexer:
+    image: ghcr.io/gaze-network/gaze-indexer:v0.2.1
+    container_name: gaze-indexer
+    restart: unless-stopped
+    ports:
+      - 8080:8080 # Expose HTTP server port to host
+    volumes:
+      - "./config.yaml:/app/config.yaml" # mount config.yaml file to the container as "/app/config.yaml"
+    command: ["/app/main", "run", "--modules", "runes"] # Put module flags after "run" commands to select which modules to run.
+```
+
+### Install from source
+
+1. Install `go` version 1.22 or higher. See Go installation guide [here](https://go.dev/doc/install).
+2. Clone this repository.
+
+```bash
+git clone https://github.com/gaze-network/gaze-indexer.git
+cd gaze-indexer
+```
+
+3. Build the main binary.
+
+```bash
+# Get dependencies
+go mod download
+
+# Build the main binary
+go build -o gaze main.go
+```
+
+4. Run database migrations with the `migrate` command and module flags.
+
+```bash
+./gaze migrate up --runes --database postgres://postgres:password@localhost:5432/postgres
+```
+
+5. Start the indexer with the `run` command and module flags.
+
+```bash
+./gaze run --modules runes
+```
+
+If `config.yaml` is not located at `./app/config.yaml`, use the `--config` flag to specify the path to the `config.yaml` file.
+
+```bash
+./gaze run --modules runes --config /path/to/config.yaml
+```

cmd/cmd.go

@@ -0,0 +1,59 @@
+package cmd
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/gaze-network/indexer-network/internal/config"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/gaze-network/indexer-network/pkg/logger/slogx"
+	"github.com/spf13/cobra"
+)
+
+var (
+	// root command
+	cmd = &cobra.Command{
+		Use:  "gaze",
+		Long: `Description of gaze indexer`,
+	}
+
+	// sub-commands
+	cmds = []*cobra.Command{
+		NewVersionCommand(),
+		NewRunCommand(),
+		NewMigrateCommand(),
+	}
+)
+
+// Execute runs the root command
+func Execute(ctx context.Context) {
+	var configFile string
+
+	// Add global flags
+	flags := cmd.PersistentFlags()
+	flags.StringVar(&configFile, "config", "", "config file, E.g.  `./config.yaml`")
+	flags.String("network", "mainnet", "network to connect to, E.g. `mainnet` or `testnet`")
+
+	// Bind flags to configuration
+	config.BindPFlag("network", flags.Lookup("network"))
+
+	// Initialize configuration and logger on start command
+	cobra.OnInitialize(func() {
+		// Initialize configuration
+		config := config.Parse(configFile)
+
+		// Initialize logger
+		if err := logger.Init(config.Logger); err != nil {
+			logger.PanicContext(ctx, "Something went wrong, can't init logger", slogx.Error(err), slog.Any("config", config.Logger))
+		}
+	})
+
+	// Register sub-commands
+	cmd.AddCommand(cmds...)
+
+	// Execute command
+	if err := cmd.ExecuteContext(ctx); err != nil {
+		// Cobra will print the error message by default
+		logger.DebugContext(ctx, "Error executing command", slogx.Error(err))
+	}
+}

cmd/cmd_migrate.go

@@ -0,0 +1,20 @@
+package cmd
+
+import (
+	"github.com/gaze-network/indexer-network/cmd/migrate"
+	_ "github.com/golang-migrate/migrate/v4/database/postgres"
+	_ "github.com/golang-migrate/migrate/v4/source/file"
+	"github.com/spf13/cobra"
+)
+
+func NewMigrateCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "migrate",
+		Short: "Migrate database schema",
+	}
+	cmd.AddCommand(
+		migrate.NewMigrateUpCommand(),
+		migrate.NewMigrateDownCommand(),
+	)
+	return cmd
+}

cmd/cmd_run.go

@@ -0,0 +1,265 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"runtime"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/btcsuite/btcd/rpcclient"
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/core/indexer"
+	"github.com/gaze-network/indexer-network/internal/config"
+	"github.com/gaze-network/indexer-network/modules/nodesale"
+	"github.com/gaze-network/indexer-network/modules/runes"
+	"github.com/gaze-network/indexer-network/pkg/automaxprocs"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/gaze-network/indexer-network/pkg/logger/slogx"
+	"github.com/gaze-network/indexer-network/pkg/middleware/errorhandler"
+	"github.com/gaze-network/indexer-network/pkg/middleware/requestcontext"
+	"github.com/gaze-network/indexer-network/pkg/middleware/requestlogger"
+	"github.com/gaze-network/indexer-network/pkg/reportingclient"
+	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/compress"
+	"github.com/gofiber/fiber/v2/middleware/cors"
+	"github.com/gofiber/fiber/v2/middleware/favicon"
+	fiberrecover "github.com/gofiber/fiber/v2/middleware/recover"
+	"github.com/gofiber/fiber/v2/middleware/requestid"
+	"github.com/samber/do/v2"
+	"github.com/samber/lo"
+	"github.com/spf13/cobra"
+)
+
+// Register Modules
+var Modules = do.Package(
+	do.LazyNamed("runes", runes.New),
+	do.LazyNamed("nodesale", nodesale.New),
+)
+
+func NewRunCommand() *cobra.Command {
+	// Create command
+	runCmd := &cobra.Command{
+		Use:   "run",
+		Short: "Start indexer-network service",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if err := automaxprocs.Init(); err != nil {
+				logger.Error("Failed to set GOMAXPROCS", slogx.Error(err))
+			}
+			return runHandler(cmd, args)
+		},
+	}
+
+	// Add local flags
+	flags := runCmd.Flags()
+	flags.Bool("api-only", false, "Run only API server")
+	flags.String("modules", "", "Enable specific modules to run. E.g. `runes,brc20`")
+
+	// Bind flags to configuration
+	config.BindPFlag("api_only", flags.Lookup("api-only"))
+	config.BindPFlag("enable_modules", flags.Lookup("modules"))
+
+	return runCmd
+}
+
+const (
+	shutdownTimeout = 60 * time.Second
+)
+
+func runHandler(cmd *cobra.Command, _ []string) error {
+	conf := config.Load()
+
+	// Validate inputs and configurations
+	{
+		if !conf.Network.IsSupported() {
+			return errors.Wrapf(errs.Unsupported, "%q network is not supported", conf.Network.String())
+		}
+	}
+
+	// Initialize application process context
+	ctx, stop := signal.NotifyContext(cmd.Context(), os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
+	injector := do.New(Modules)
+	do.ProvideValue(injector, conf)
+	do.ProvideValue(injector, ctx)
+
+	// Initialize Bitcoin RPC client
+	do.Provide(injector, func(i do.Injector) (*rpcclient.Client, error) {
+		conf := do.MustInvoke[config.Config](i)
+
+		client, err := rpcclient.New(&rpcclient.ConnConfig{
+			Host:         conf.BitcoinNode.Host,
+			User:         conf.BitcoinNode.User,
+			Pass:         conf.BitcoinNode.Pass,
+			DisableTLS:   conf.BitcoinNode.DisableTLS,
+			HTTPPostMode: true,
+		}, nil)
+		if err != nil {
+			return nil, errors.Wrap(err, "invalid Bitcoin node configuration")
+		}
+
+		// Check Bitcoin RPC connection
+		{
+			start := time.Now()
+			logger.InfoContext(ctx, "Connecting to Bitcoin Core RPC Server...", slogx.String("host", conf.BitcoinNode.Host))
+			if err := client.Ping(); err != nil {
+				return nil, errors.Wrapf(err, "can't connect to Bitcoin Core RPC Server %q", conf.BitcoinNode.Host)
+			}
+			logger.InfoContext(ctx, "Connected to Bitcoin Core RPC Server", slog.Duration("latency", time.Since(start)))
+		}
+
+		return client, nil
+	})
+
+	// Initialize reporting client
+	do.Provide(injector, func(i do.Injector) (*reportingclient.ReportingClient, error) {
+		conf := do.MustInvoke[config.Config](i)
+		if conf.Reporting.Disabled {
+			return nil, nil
+		}
+
+		reportingClient, err := reportingclient.New(conf.Reporting)
+		if err != nil {
+			if errors.Is(err, errs.InvalidArgument) {
+				return nil, errors.Wrap(err, "invalid reporting configuration")
+			}
+			return nil, errors.Wrap(err, "can't create reporting client")
+		}
+		return reportingClient, nil
+	})
+
+	// Initialize HTTP server
+	do.Provide(injector, func(i do.Injector) (*fiber.App, error) {
+		app := fiber.New(fiber.Config{
+			AppName: "Gaze Indexer",
+			ErrorHandler: func(c *fiber.Ctx, err error) error {
+				logger.ErrorContext(c.UserContext(), "Something went wrong, unhandled api error",
+					slogx.String("event", "api_unhandled_error"),
+					slogx.Error(err),
+				)
+				return errors.WithStack(c.Status(http.StatusInternalServerError).JSON(fiber.Map{
+					"error": "Internal Server Error",
+				}))
+			},
+		})
+		app.
+			Use(favicon.New()).
+			Use(cors.New()).
+			Use(requestid.New()).
+			Use(requestcontext.New(
+				requestcontext.WithRequestId(),
+				requestcontext.WithClientIP(conf.HTTPServer.RequestIP),
+			)).
+			Use(requestlogger.New(conf.HTTPServer.Logger)).
+			Use(fiberrecover.New(fiberrecover.Config{
+				EnableStackTrace: true,
+				StackTraceHandler: func(c *fiber.Ctx, e interface{}) {
+					buf := make([]byte, 1024) // bufLen = 1024
+					buf = buf[:runtime.Stack(buf, false)]
+					logger.ErrorContext(c.UserContext(), "Something went wrong, panic in http handler", slogx.Any("panic", e), slog.String("stacktrace", string(buf)))
+				},
+			})).
+			Use(errorhandler.New()).
+			Use(compress.New(compress.Config{
+				Level: compress.LevelDefault,
+			}))
+
+		// Health check
+		app.Get("/", func(c *fiber.Ctx) error {
+			return errors.WithStack(c.SendStatus(http.StatusOK))
+		})
+
+		return app, nil
+	})
+
+	// Initialize worker context to separate worker's lifecycle from main process
+	ctxWorker, stopWorker := context.WithCancel(context.Background())
+	defer stopWorker()
+
+	// Add logger context
+	ctxWorker = logger.WithContext(ctxWorker, slogx.Stringer("network", conf.Network))
+
+	// Run modules
+	{
+		modules := lo.Uniq(conf.EnableModules)
+		modules = lo.Map(modules, func(item string, _ int) string { return strings.TrimSpace(item) })
+		modules = lo.Filter(modules, func(item string, _ int) bool { return item != "" })
+		for _, module := range modules {
+			ctx := logger.WithContext(ctxWorker, slogx.String("module", module))
+
+			indexer, err := do.InvokeNamed[indexer.IndexerWorker](injector, module)
+			if err != nil {
+				if errors.Is(err, do.ErrServiceNotFound) {
+					return errors.Errorf("Module %q is not supported", module)
+				}
+				return errors.Wrapf(err, "can't init module %q", module)
+			}
+
+			// Run Indexer
+			if !conf.APIOnly {
+				go func() {
+					// stop main process if indexer stopped
+					defer stop()
+
+					logger.InfoContext(ctx, "Starting Gaze Indexer")
+					if err := indexer.Run(ctx); err != nil {
+						logger.PanicContext(ctx, "Something went wrong, error during running indexer", slogx.Error(err))
+					}
+				}()
+			}
+		}
+	}
+
+	// Run API server
+	httpServer := do.MustInvoke[*fiber.App](injector)
+	go func() {
+		// stop main process if API stopped
+		defer stop()
+
+		logger.InfoContext(ctx, "Started HTTP server", slog.Int("port", conf.HTTPServer.Port))
+		if err := httpServer.Listen(fmt.Sprintf(":%d", conf.HTTPServer.Port)); err != nil {
+			logger.PanicContext(ctx, "Something went wrong, error during running HTTP server", slogx.Error(err))
+		}
+	}()
+
+	// Stop application if worker context is done
+	go func() {
+		<-ctxWorker.Done()
+		defer stop()
+
+		logger.InfoContext(ctx, "Gaze Indexer Worker is stopped. Stopping application...")
+	}()
+
+	logger.InfoContext(ctxWorker, "Gaze Indexer started")
+
+	// Wait for interrupt signal to gracefully stop the server
+	<-ctx.Done()
+
+	// Force shutdown if timeout exceeded or got signal again
+	go func() {
+		defer os.Exit(1)
+
+		ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
+		defer stop()
+
+		select {
+		case <-ctx.Done():
+			logger.FatalContext(ctx, "Received exit signal again. Force shutdown...")
+		case <-time.After(shutdownTimeout + 15*time.Second):
+			logger.FatalContext(ctx, "Shutdown timeout exceeded. Force shutdown...")
+		}
+	}()
+
+	if err := injector.Shutdown(); err != nil {
+		logger.PanicContext(ctx, "Failed while gracefully shutting down", slogx.Error(err))
+	}
+
+	return nil
+}

cmd/cmd_version.go

@@ -0,0 +1,49 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/core/constants"
+	"github.com/gaze-network/indexer-network/modules/nodesale"
+	runesconstants "github.com/gaze-network/indexer-network/modules/runes/constants"
+	"github.com/spf13/cobra"
+)
+
+var versions = map[string]string{
+	"":         constants.Version,
+	"runes":    runesconstants.Version,
+	"nodesale": nodesale.Version,
+}
+
+type versionCmdOptions struct {
+	Modules string
+}
+
+func NewVersionCommand() *cobra.Command {
+	opts := &versionCmdOptions{}
+
+	cmd := &cobra.Command{
+		Use:   "version",
+		Short: "Show indexer-network version",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return versionHandler(opts, cmd, args)
+		},
+	}
+
+	flags := cmd.Flags()
+	flags.StringVar(&opts.Modules, "module", "", `Show version of a specific module. E.g. "runes"`)
+
+	return cmd
+}
+
+func versionHandler(opts *versionCmdOptions, _ *cobra.Command, _ []string) error {
+	version, ok := versions[opts.Modules]
+	if !ok {
+		// fmt.Fprintln(cmd.ErrOrStderr(), "Unknown module")
+		return errors.Wrap(errs.Unsupported, "Invalid module name")
+	}
+	fmt.Println(version)
+	return nil
+}

cmd/migrate/cmd_down.go

@@ -0,0 +1,125 @@
+package migrate
+
+import (
+	"fmt"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/golang-migrate/migrate/v4"
+	_ "github.com/golang-migrate/migrate/v4/database/postgres"
+	_ "github.com/golang-migrate/migrate/v4/source/file"
+	"github.com/samber/lo"
+	"github.com/spf13/cobra"
+)
+
+type migrateDownCmdOptions struct {
+	DatabaseURL string
+	Runes       bool
+	All         bool
+}
+
+type migrateDownCmdArgs struct {
+	N int
+}
+
+func (a *migrateDownCmdArgs) ParseArgs(args []string) error {
+	if len(args) > 0 {
+		// assume args already validated by cobra to be len(args) <= 1
+		n, err := strconv.Atoi(args[0])
+		if err != nil {
+			return errors.Wrap(err, "failed to parse N")
+		}
+		if n < 0 {
+			return errors.New("N must be a positive integer")
+		}
+		a.N = n
+	}
+	return nil
+}
+
+func NewMigrateDownCommand() *cobra.Command {
+	opts := &migrateDownCmdOptions{}
+
+	cmd := &cobra.Command{
+		Use:     "down [N]",
+		Short:   "Apply all or N down migrations",
+		Args:    cobra.MaximumNArgs(1),
+		Example: `gaze migrate down --database "postgres://postgres:postgres@localhost:5432/gaze-indexer?sslmode=disable"`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			// args already validated by cobra
+			var downArgs migrateDownCmdArgs
+			if err := downArgs.ParseArgs(args); err != nil {
+				return errors.Wrap(err, "failed to parse args")
+			}
+			return migrateDownHandler(opts, cmd, downArgs)
+		},
+	}
+
+	flags := cmd.Flags()
+	flags.BoolVar(&opts.Runes, "runes", false, "Apply Runes down migrations")
+	flags.StringVar(&opts.DatabaseURL, "database", "", "Database url to run migration on")
+	flags.BoolVar(&opts.All, "all", false, "Confirm apply ALL down migrations without prompt")
+
+	return cmd
+}
+
+func migrateDownHandler(opts *migrateDownCmdOptions, _ *cobra.Command, args migrateDownCmdArgs) error {
+	if opts.DatabaseURL == "" {
+		return errors.New("--database is required")
+	}
+	databaseURL, err := url.Parse(opts.DatabaseURL)
+	if err != nil {
+		return errors.Wrap(err, "failed to parse database URL")
+	}
+	if _, ok := supportedDrivers[databaseURL.Scheme]; !ok {
+		return errors.Errorf("unsupported database driver: %s", databaseURL.Scheme)
+	}
+	// prevent accidental down all migrations
+	if args.N == 0 && !opts.All {
+		input := ""
+		fmt.Print("Are you sure you want to apply all down migrations? (y/N):")
+		fmt.Scanln(&input)
+		if !lo.Contains([]string{"y", "yes"}, strings.ToLower(input)) {
+			return nil
+		}
+	}
+
+	applyDownMigrations := func(module string, sourcePath string, migrationTable string) error {
+		newDatabaseURL := cloneURLWithQuery(databaseURL, url.Values{"x-migrations-table": {migrationTable}})
+		sourceURL := "file://" + sourcePath
+		m, err := migrate.New(sourceURL, newDatabaseURL.String())
+		if err != nil {
+			if strings.Contains(err.Error(), "no such file or directory") {
+				return errors.Wrap(errs.InternalError, "migrations directory not found")
+			}
+			return errors.Wrap(err, "failed to open database")
+		}
+		m.Log = &consoleLogger{
+			prefix: fmt.Sprintf("[%s] ", module),
+		}
+		if args.N == 0 {
+			m.Log.Printf("Applying down migrations...\n")
+			err = m.Down()
+		} else {
+			m.Log.Printf("Applying %d down migrations...\n", args.N)
+			err = m.Steps(-args.N)
+		}
+		if err != nil {
+			if !errors.Is(err, migrate.ErrNoChange) {
+				return errors.Wrapf(err, "failed to apply %s down migrations", module)
+			}
+			m.Log.Printf("No more down migrations to apply\n")
+		}
+		return nil
+	}
+
+	if opts.Runes {
+		if err := applyDownMigrations("Runes", runesMigrationSource, "runes_schema_migrations"); err != nil {
+			return errors.WithStack(err)
+		}
+	}
+	return nil
+}

cmd/migrate/cmd_up.go

@@ -0,0 +1,110 @@
+package migrate
+
+import (
+	"fmt"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/golang-migrate/migrate/v4"
+	_ "github.com/golang-migrate/migrate/v4/database/postgres"
+	_ "github.com/golang-migrate/migrate/v4/source/file"
+	"github.com/spf13/cobra"
+)
+
+type migrateUpCmdOptions struct {
+	DatabaseURL string
+	Runes       bool
+}
+
+type migrateUpCmdArgs struct {
+	N int
+}
+
+func (a *migrateUpCmdArgs) ParseArgs(args []string) error {
+	if len(args) > 0 {
+		// assume args already validated by cobra to be len(args) <= 1
+		n, err := strconv.Atoi(args[0])
+		if err != nil {
+			return errors.Wrap(err, "failed to parse N")
+		}
+		a.N = n
+	}
+	return nil
+}
+
+func NewMigrateUpCommand() *cobra.Command {
+	opts := &migrateUpCmdOptions{}
+
+	cmd := &cobra.Command{
+		Use:     "up [N]",
+		Short:   "Apply all or N up migrations",
+		Args:    cobra.MaximumNArgs(1),
+		Example: `gaze migrate up --database "postgres://postgres:postgres@localhost:5432/gaze-indexer?sslmode=disable"`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			// args already validated by cobra
+			var upArgs migrateUpCmdArgs
+			if err := upArgs.ParseArgs(args); err != nil {
+				return errors.Wrap(err, "failed to parse args")
+			}
+			return migrateUpHandler(opts, cmd, upArgs)
+		},
+	}
+
+	flags := cmd.Flags()
+	flags.BoolVar(&opts.Runes, "runes", false, "Apply Runes up migrations")
+	flags.StringVar(&opts.DatabaseURL, "database", "", "Database url to run migration on")
+
+	return cmd
+}
+
+func migrateUpHandler(opts *migrateUpCmdOptions, _ *cobra.Command, args migrateUpCmdArgs) error {
+	if opts.DatabaseURL == "" {
+		return errors.New("--database is required")
+	}
+	databaseURL, err := url.Parse(opts.DatabaseURL)
+	if err != nil {
+		return errors.Wrap(err, "failed to parse database URL")
+	}
+	if _, ok := supportedDrivers[databaseURL.Scheme]; !ok {
+		return errors.Errorf("unsupported database driver: %s", databaseURL.Scheme)
+	}
+
+	applyUpMigrations := func(module string, sourcePath string, migrationTable string) error {
+		newDatabaseURL := cloneURLWithQuery(databaseURL, url.Values{"x-migrations-table": {migrationTable}})
+		sourceURL := "file://" + sourcePath
+		m, err := migrate.New(sourceURL, newDatabaseURL.String())
+		if err != nil {
+			if strings.Contains(err.Error(), "no such file or directory") {
+				return errors.Wrap(errs.InternalError, "migrations directory not found")
+			}
+			return errors.Wrap(err, "failed to open database")
+		}
+		m.Log = &consoleLogger{
+			prefix: fmt.Sprintf("[%s] ", module),
+		}
+		if args.N == 0 {
+			m.Log.Printf("Applying up migrations...\n")
+			err = m.Up()
+		} else {
+			m.Log.Printf("Applying %d up migrations...\n", args.N)
+			err = m.Steps(args.N)
+		}
+		if err != nil {
+			if !errors.Is(err, migrate.ErrNoChange) {
+				return errors.Wrapf(err, "failed to apply %s up migrations", module)
+			}
+			m.Log.Printf("Migrations already up-to-date\n")
+		}
+		return nil
+	}
+
+	if opts.Runes {
+		if err := applyUpMigrations("Runes", runesMigrationSource, "runes_schema_migrations"); err != nil {
+			return errors.WithStack(err)
+		}
+	}
+	return nil
+}

cmd/migrate/logger.go

@@ -0,0 +1,22 @@
+package migrate
+
+import (
+	"fmt"
+
+	"github.com/golang-migrate/migrate/v4"
+)
+
+var _ migrate.Logger = (*consoleLogger)(nil)
+
+type consoleLogger struct {
+	prefix  string
+	verbose bool
+}
+
+func (l *consoleLogger) Printf(format string, v ...interface{}) {
+	fmt.Printf(l.prefix+format, v...)
+}
+
+func (l *consoleLogger) Verbose() bool {
+	return l.verbose
+}

cmd/migrate/migrate.go

@@ -0,0 +1,24 @@
+package migrate
+
+import "net/url"
+
+const (
+	runesMigrationSource = "modules/runes/database/postgresql/migrations"
+)
+
+func cloneURLWithQuery(u *url.URL, newQuery url.Values) *url.URL {
+	clone := *u
+	query := clone.Query()
+	for key, values := range newQuery {
+		for _, value := range values {
+			query.Add(key, value)
+		}
+	}
+	clone.RawQuery = query.Encode()
+	return &clone
+}
+
+var supportedDrivers = map[string]struct{}{
+	"postgres":   {},
+	"postgresql": {},
+}

common/errs/errs.go

@@ -0,0 +1,102 @@
+package errs
+
+import (
+	"github.com/cockroachdb/errors"
+)
+
+// set depth to 10 to skip runtime stacks and current file.
+const depth = 10
+
+// Common Application Errors
+var (
+	// NotFound is returned when a resource is not found
+	NotFound = errors.NewWithDepth(depth, "not found")
+
+	// InternalError is returned when internal logic got error
+	InternalError = errors.NewWithDepth(depth, "internal error")
+
+	// SomethingWentWrong is returned when got some bug or unexpected case
+	//
+	// inherited error from InternalError,
+	// so errors.Is(err, InternalError) == true
+	SomethingWentWrong = errors.WrapWithDepth(depth, InternalError, "something went wrong")
+
+	// Skippable is returned when got an error but it can be skipped or ignored and continue
+	Skippable = errors.NewWithDepth(depth, "skippable")
+
+	// Retryable is returned when got an error but it can be retried
+	Retryable = errors.NewWithDepth(depth, "retryable")
+
+	// Unsupported is returned when a feature or result is not supported
+	Unsupported = errors.NewWithDepth(depth, "unsupported")
+
+	// NotSupported is returned when a feature or result is not supported
+	// alias of Unsupported
+	NotSupported = Unsupported
+
+	// Unauthorized is returned when a request is unauthorized
+	Unauthorized = errors.NewWithDepth(depth, "unauthorized")
+
+	// Timeout is returned when a connection to a resource timed out
+	Timeout = errors.NewWithDepth(depth, "timeout")
+
+	// BadRequest is returned when a request is invalid
+	BadRequest = errors.NewWithDepth(depth, "bad request")
+
+	// InvalidArgument is returned when an argument is invalid
+	//
+	// inherited error from BadRequest,
+	// so errors.Is(err, BadRequest) == true
+	InvalidArgument = errors.WrapWithDepth(depth, BadRequest, "invalid argument")
+
+	// ArgumentRequired is returned when an argument is required
+	//
+	// inherited error from BadRequest,
+	// so errors.Is(err, BadRequest) == true
+	ArgumentRequired = errors.WrapWithDepth(depth, BadRequest, "argument required")
+
+	// Duplicate is returned when a resource already exists
+	Duplicate = errors.NewWithDepth(depth, "duplicate")
+
+	// Unimplemented is returned when a feature or method is not implemented
+	//
+	// inherited error from Unsupported,
+	// so errors.Is(err, Unsupported) == true
+	Unimplemented = errors.WrapWithDepth(depth, Unsupported, "unimplemented")
+)
+
+// Business Logic errors
+var (
+	// Overflow is returned when an overflow error occurs
+	//
+	// inherited error from InternalError,
+	// so errors.Is(err, InternalError) == true
+	Overflow = errors.WrapWithDepth(depth, InternalError, "overflow")
+
+	// OverflowUint64 is returned when an uint64 overflow error occurs
+	//
+	// inherited error from Overflow,
+	// so errors.Is(err, Overflow) == true
+	OverflowUint32 = errors.WrapWithDepth(depth, Overflow, "overflow uint32")
+
+	// OverflowUint64 is returned when an uint64 overflow error occurs
+	//
+	// inherited error from Overflow,
+	// so errors.Is(err, Overflow) == true
+	OverflowUint64 = errors.WrapWithDepth(depth, Overflow, "overflow uint64")
+
+	// OverflowUint128 is returned when an uint128 overflow error occurs
+	//
+	// inherited error from Overflow,
+	// so errors.Is(err, Overflow) == true
+	OverflowUint128 = errors.WrapWithDepth(depth, Overflow, "overflow uint128")
+
+	// InvalidState is returned when a state is invalid
+	InvalidState = errors.NewWithDepth(depth, "invalid state")
+
+	// ConflictSetting is returned when an indexer setting is conflicted
+	ConflictSetting = errors.NewWithDepth(depth, "conflict setting")
+
+	// Closed is returned when a resource is closed
+	Closed = errors.NewWithDepth(depth, "closed")
+)

common/errs/public_errs.go

@@ -0,0 +1,43 @@
+package errs
+
+import (
+	"fmt"
+
+	"github.com/cockroachdb/errors"
+	"github.com/cockroachdb/errors/withstack"
+)
+
+// PublicError is an error that, when caught by error handler, should return a user-friendly error response to the user. Responses vary between each protocol (http, grpc, etc.).
+type PublicError struct {
+	err     error
+	message string
+}
+
+func (p PublicError) Error() string {
+	return p.err.Error()
+}
+
+func (p PublicError) Message() string {
+	return p.message
+}
+
+func (p PublicError) Unwrap() error {
+	return p.err
+}
+
+func NewPublicError(message string) error {
+	return withstack.WithStackDepth(&PublicError{err: errors.New(message), message: message}, 1)
+}
+
+func WithPublicMessage(err error, prefix string) error {
+	if err == nil {
+		return nil
+	}
+	var message string
+	if prefix != "" {
+		message = fmt.Sprintf("%s: %s", prefix, err.Error())
+	} else {
+		message = err.Error()
+	}
+	return withstack.WithStackDepth(&PublicError{err: err, message: message}, 1)
+}

common/hash.go

@@ -0,0 +1,12 @@
+package common
+
+import (
+	"github.com/Cleverse/go-utilities/utils"
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+)
+
+// Zero value of chainhash.Hash
+var (
+	ZeroHash = *utils.Must(chainhash.NewHashFromStr("0000000000000000000000000000000000000000000000000000000000000000"))
+	NullHash = ZeroHash
+)

common/network.go

@@ -0,0 +1,54 @@
+package common
+
+import (
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+)
+
+type Network string
+
+const (
+	NetworkMainnet        Network = "mainnet"
+	NetworkTestnet        Network = "testnet"
+	NetworkFractalMainnet Network = "fractal-mainnet"
+	NetworkFractalTestnet Network = "fractal-testnet"
+)
+
+var supportedNetworks = map[Network]struct{}{
+	NetworkMainnet:        {},
+	NetworkTestnet:        {},
+	NetworkFractalMainnet: {},
+	NetworkFractalTestnet: {},
+}
+
+var chainParams = map[Network]*chaincfg.Params{
+	NetworkMainnet:        &chaincfg.MainNetParams,
+	NetworkTestnet:        &chaincfg.TestNet3Params,
+	NetworkFractalMainnet: &chaincfg.MainNetParams,
+	NetworkFractalTestnet: &chaincfg.MainNetParams,
+}
+
+func (n Network) IsSupported() bool {
+	_, ok := supportedNetworks[n]
+	return ok
+}
+
+func (n Network) ChainParams() *chaincfg.Params {
+	return chainParams[n]
+}
+
+func (n Network) String() string {
+	return string(n)
+}
+
+func (n Network) HalvingInterval() uint64 {
+	switch n {
+	case NetworkMainnet, NetworkTestnet:
+		return 210_000
+	case NetworkFractalMainnet, NetworkFractalTestnet:
+		return 2_100_000
+	default:
+		logger.Panic("invalid network")
+		return 0
+	}
+}

config.example.yaml

@@ -0,0 +1,57 @@
+logger:
+  output: TEXT # Output format for logs. current supported formats: "TEXT" | "JSON" | "GCP"
+  debug: false
+
+# Network to run the indexer on. Current supported networks: "mainnet" | "testnet"
+network: mainnet
+
+# Bitcoin Core RPC configuration options.
+bitcoin_node:
+  host: "" # [Required] Host of Bitcoin Core RPC (without https://)
+  user: "" # Username to authenticate with Bitcoin Core RPC
+  pass: "" # Password to authenticate with Bitcoin Core RPC
+  disable_tls: false # Set to true to disable tls
+
+# Block reporting configuration options. See Block Reporting section for more details.
+reporting:
+  disabled: false # Set to true to disable block reporting to Gaze Network. Default is false.
+  base_url: "https://indexer.api.gaze.network" # Defaults to "https://indexer.api.gaze.network" if left empty
+  name: "" # [Required if not disabled] Name of this indexer to show on the Gaze Network dashboard
+  website_url: "" # Public website URL to show on the dashboard. Can be left empty.
+  indexer_api_url: "" # Public url to access this indexer's API. Can be left empty if you want to keep your indexer private.
+
+# HTTP server configuration options.
+http_server:
+  port: 8080 # Port to run the HTTP server on for modules with HTTP API handlers.
+  logger:
+    disable: false # disable logger if logger level is `INFO`
+    request_header: false
+    request_query: false
+  requestip: # Client IP extraction configuration options. This is unnecessary if you don't care about the real client IP or if you're not using a reverse proxy.
+    trusted_proxies_ip: # Cloudflare, GCP Public LB. See: server/internal/middleware/requestcontext/PROXY-IP.md
+    trusted_proxies_header: # X-Real-IP, CF-Connecting-IP
+    enable_reject_malformed_request: false # return 403 if request is malformed (invalid IP)
+
+# Meta-protocol modules configuration options.
+modules:
+  # Configuration options for Runes module. Can be removed if not used.
+  runes:
+    database: "postgres" # Database to store Runes data. current supported databases: "postgres"
+    datasource: "database" # Data source to be used for Bitcoin data. current supported data sources: "bitcoin-node".
+    api_handlers: # API handlers to enable. current supported handlers: "http"
+      - http
+    postgres:
+      host: "localhost"
+      port: 5432
+      user: "postgres"
+      password: "password"
+      db_name: "postgres"
+      # url: "postgres://postgres:password@localhost:5432/postgres?sslmode=prefer" # [Optional] This will override other database credentials above.
+  nodesale:
+    postgres:
+      host: "localhost"
+      port: 5432
+      user: "postgres"
+      password: "P@ssw0rd"
+      db_name: "postgres"
+    last_block_default: 400

core/constants/constants.go

@@ -0,0 +1,5 @@
+package constants
+
+const (
+	Version = "v0.2.1"
+)

core/datasources/bitcoin_node.go

@@ -0,0 +1,296 @@
+package datasources
+
+import (
+	"bytes"
+	"context"
+	"encoding/hex"
+	"time"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/rpcclient"
+	"github.com/btcsuite/btcd/wire"
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/core/types"
+	"github.com/gaze-network/indexer-network/internal/subscription"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/gaze-network/indexer-network/pkg/logger/slogx"
+	cstream "github.com/planxnx/concurrent-stream"
+	"github.com/samber/lo"
+)
+
+const (
+	blockStreamChunkSize = 5
+)
+
+// Make sure to implement the BitcoinDatasource interface
+var _ Datasource[*types.Block] = (*BitcoinNodeDatasource)(nil)
+
+// BitcoinNodeDatasource fetch data from Bitcoin node for Bitcoin Indexer
+type BitcoinNodeDatasource struct {
+	btcclient *rpcclient.Client
+}
+
+// NewBitcoinNode create new BitcoinNodeDatasource	with Bitcoin Core RPC Client
+func NewBitcoinNode(btcclient *rpcclient.Client) *BitcoinNodeDatasource {
+	return &BitcoinNodeDatasource{
+		btcclient: btcclient,
+	}
+}
+
+func (p BitcoinNodeDatasource) Name() string {
+	return "bitcoin_node"
+}
+
+// Fetch polling blocks from Bitcoin node
+//
+//   - from: block height to start fetching, if -1, it will start from genesis block
+//   - to: block height to stop fetching, if -1, it will fetch until the latest block
+func (d *BitcoinNodeDatasource) Fetch(ctx context.Context, from, to int64) ([]*types.Block, error) {
+	ch := make(chan []*types.Block)
+	subscription, err := d.FetchAsync(ctx, from, to, ch)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+	defer subscription.Unsubscribe()
+
+	blocks := make([]*types.Block, 0)
+	for {
+		select {
+		case b, ok := <-ch:
+			if !ok {
+				return blocks, nil
+			}
+			blocks = append(blocks, b...)
+		case <-subscription.Done():
+			if err := ctx.Err(); err != nil {
+				return nil, errors.Wrap(err, "context done")
+			}
+			return blocks, nil
+		case err := <-subscription.Err():
+			if err != nil {
+				return nil, errors.Wrap(err, "got error while fetch async")
+			}
+			return blocks, nil
+		case <-ctx.Done():
+			return nil, errors.Wrap(ctx.Err(), "context done")
+		}
+	}
+}
+
+// FetchAsync polling blocks from Bitcoin node asynchronously (non-blocking)
+//
+//   - from: block height to start fetching, if -1, it will start from genesis block
+//   - to: block height to stop fetching, if -1, it will fetch until the latest block
+func (d *BitcoinNodeDatasource) FetchAsync(ctx context.Context, from, to int64, ch chan<- []*types.Block) (*subscription.ClientSubscription[[]*types.Block], error) {
+	ctx = logger.WithContext(ctx,
+		slogx.String("package", "datasources"),
+		slogx.String("datasource", d.Name()),
+	)
+
+	from, to, skip, err := d.prepareRange(from, to)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to prepare fetch range")
+	}
+
+	subscription := subscription.NewSubscription(ch)
+	if skip {
+		if err := subscription.UnsubscribeWithContext(ctx); err != nil {
+			return nil, errors.Wrap(err, "failed to unsubscribe")
+		}
+		return subscription.Client(), nil
+	}
+
+	// Create parallel stream
+	out := make(chan []*types.Block)
+	stream := cstream.NewStream(ctx, 8, out)
+
+	// create slice of block height to fetch
+	blockHeights := make([]int64, 0, to-from+1)
+	for i := from; i <= to; i++ {
+		blockHeights = append(blockHeights, i)
+	}
+
+	// Wait for stream to finish and close out channel
+	go func() {
+		defer close(out)
+		_ = stream.Wait()
+	}()
+
+	// Fan-out blocks to subscription channel
+	go func() {
+		defer func() {
+			// add a bit delay to prevent shutdown before client receive all blocks
+			time.Sleep(100 * time.Millisecond)
+
+			subscription.Unsubscribe()
+		}()
+		for {
+			select {
+			case data, ok := <-out:
+				// stream closed
+				if !ok {
+					return
+				}
+
+				// empty blocks
+				if len(data) == 0 {
+					continue
+				}
+
+				// send blocks to subscription channel
+				if err := subscription.Send(ctx, data); err != nil {
+					if errors.Is(err, errs.Closed) {
+						return
+					}
+					logger.WarnContext(ctx, "Failed to send bitcoin blocks to subscription client",
+						slogx.Int64("start", data[0].Header.Height),
+						slogx.Int64("end", data[len(data)-1].Header.Height),
+						slogx.Error(err),
+					)
+				}
+			case <-ctx.Done():
+				return
+			}
+		}
+	}()
+
+	// Parallel fetch blocks from Bitcoin node until complete all block heights
+	// or subscription is done.
+	go func() {
+		defer stream.Close()
+		done := subscription.Done()
+		chunks := lo.Chunk(blockHeights, blockStreamChunkSize)
+		for _, chunk := range chunks {
+			// TODO: Implement throttling logic to control the rate of fetching blocks (block/sec)
+			chunk := chunk
+			select {
+			case <-done:
+				return
+			case <-ctx.Done():
+				return
+			default:
+				stream.Go(func() []*types.Block {
+					startAt := time.Now()
+					defer func() {
+						logger.DebugContext(ctx, "Fetched chunk of blocks from Bitcoin node",
+							slogx.Int("total_blocks", len(chunk)),
+							slogx.Int64("from", chunk[0]),
+							slogx.Int64("to", chunk[len(chunk)-1]),
+							slogx.Duration("duration", time.Since(startAt)),
+						)
+					}()
+					// TODO: should concurrent fetch block or not ?
+					blocks := make([]*types.Block, 0, len(chunk))
+					for _, height := range chunk {
+						hash, err := d.btcclient.GetBlockHash(height)
+						if err != nil {
+							logger.ErrorContext(ctx, "Can't get block hash from Bitcoin node rpc", slogx.Error(err), slogx.Int64("height", height))
+							if err := subscription.SendError(ctx, errors.Wrapf(err, "failed to get block hash: height: %d", height)); err != nil {
+								logger.WarnContext(ctx, "Failed to send datasource error to subscription client", slogx.Error(err))
+							}
+							return nil
+						}
+
+						block, err := d.btcclient.GetBlock(hash)
+						if err != nil {
+							logger.ErrorContext(ctx, "Can't get block data from Bitcoin node rpc", slogx.Error(err), slogx.Int64("height", height))
+							if err := subscription.SendError(ctx, errors.Wrapf(err, "failed to get block: height: %d, hash: %s", height, hash)); err != nil {
+								logger.WarnContext(ctx, "Failed to send datasource error to subscription client", slogx.Error(err))
+							}
+							return nil
+						}
+
+						blocks = append(blocks, types.ParseMsgBlock(block, height))
+					}
+					return blocks
+				})
+			}
+		}
+	}()
+
+	return subscription.Client(), nil
+}
+
+func (d *BitcoinNodeDatasource) prepareRange(fromHeight, toHeight int64) (start, end int64, skip bool, err error) {
+	start = fromHeight
+	end = toHeight
+
+	// get current bitcoin block height
+	latestBlockHeight, err := d.btcclient.GetBlockCount()
+	if err != nil {
+		return -1, -1, false, errors.Wrap(err, "failed to get block count")
+	}
+
+	// set start to genesis block height
+	if start < 0 {
+		start = 0
+	}
+
+	// set end to current bitcoin block height if
+	// - end is -1
+	// - end is greater that current bitcoin block height
+	if end < 0 || end > latestBlockHeight {
+		end = latestBlockHeight
+	}
+
+	// if start is greater than end, skip this round
+	if start > end {
+		return -1, -1, true, nil
+	}
+
+	return start, end, false, nil
+}
+
+// GetTransaction fetch transaction from Bitcoin node
+func (d *BitcoinNodeDatasource) GetRawTransactionAndHeightByTxHash(ctx context.Context, txHash chainhash.Hash) (*wire.MsgTx, int64, error) {
+	rawTxVerbose, err := d.btcclient.GetRawTransactionVerbose(&txHash)
+	if err != nil {
+		return nil, 0, errors.Wrap(err, "failed to get raw transaction")
+	}
+
+	blockHash, err := chainhash.NewHashFromStr(rawTxVerbose.BlockHash)
+	if err != nil {
+		return nil, 0, errors.Wrap(err, "failed to parse block hash")
+	}
+	block, err := d.btcclient.GetBlockVerbose(blockHash)
+	if err != nil {
+		return nil, 0, errors.Wrap(err, "failed to get block header")
+	}
+
+	// parse tx
+	txBytes, err := hex.DecodeString(rawTxVerbose.Hex)
+	if err != nil {
+		return nil, 0, errors.Wrap(err, "failed to decode transaction hex")
+	}
+	var msgTx wire.MsgTx
+	if err := msgTx.Deserialize(bytes.NewReader(txBytes)); err != nil {
+		return nil, 0, errors.Wrap(err, "failed to deserialize transaction")
+	}
+
+	return &msgTx, block.Height, nil
+}
+
+// GetBlockHeader fetch block header from Bitcoin node
+func (d *BitcoinNodeDatasource) GetBlockHeader(ctx context.Context, height int64) (types.BlockHeader, error) {
+	hash, err := d.btcclient.GetBlockHash(height)
+	if err != nil {
+		return types.BlockHeader{}, errors.Wrap(err, "failed to get block hash")
+	}
+
+	block, err := d.btcclient.GetBlockHeader(hash)
+	if err != nil {
+		return types.BlockHeader{}, errors.Wrap(err, "failed to get block header")
+	}
+
+	return types.ParseMsgBlockHeader(*block, height), nil
+}
+
+func (d *BitcoinNodeDatasource) GetRawTransactionByTxHash(ctx context.Context, txHash chainhash.Hash) (*wire.MsgTx, error) {
+	transaction, err := d.btcclient.GetRawTransaction(&txHash)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to get raw transaction")
+	}
+
+	return transaction.MsgTx(), nil
+}

core/datasources/datasources.go

@@ -0,0 +1,16 @@
+package datasources
+
+import (
+	"context"
+
+	"github.com/gaze-network/indexer-network/core/types"
+	"github.com/gaze-network/indexer-network/internal/subscription"
+)
+
+// Datasource is an interface for indexer data sources.
+type Datasource[T any] interface {
+	Name() string
+	Fetch(ctx context.Context, from, to int64) ([]T, error)
+	FetchAsync(ctx context.Context, from, to int64, ch chan<- []T) (*subscription.ClientSubscription[[]T], error)
+	GetBlockHeader(ctx context.Context, height int64) (types.BlockHeader, error)
+}

core/indexer/indexer.go

@@ -0,0 +1,258 @@
+package indexer
+
+import (
+	"context"
+	"log/slog"
+	"sync"
+	"time"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/core/datasources"
+	"github.com/gaze-network/indexer-network/core/types"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/gaze-network/indexer-network/pkg/logger/slogx"
+)
+
+const (
+	maxReorgLookBack = 1000
+
+	// pollingInterval is the default polling interval for the indexer polling worker
+	pollingInterval = 15 * time.Second
+)
+
+// Indexer generic indexer for fetching and processing data
+type Indexer[T Input] struct {
+	Processor    Processor[T]
+	Datasource   datasources.Datasource[T]
+	currentBlock types.BlockHeader
+
+	quitOnce sync.Once
+	quit     chan struct{}
+	done     chan struct{}
+}
+
+// New create new generic indexer
+func New[T Input](processor Processor[T], datasource datasources.Datasource[T]) *Indexer[T] {
+	return &Indexer[T]{
+		Processor:  processor,
+		Datasource: datasource,
+
+		quit: make(chan struct{}),
+		done: make(chan struct{}),
+	}
+}
+
+func (i *Indexer[T]) Shutdown() error {
+	return i.ShutdownWithContext(context.Background())
+}
+
+func (i *Indexer[T]) ShutdownWithTimeout(timeout time.Duration) error {
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	return i.ShutdownWithContext(ctx)
+}
+
+func (i *Indexer[T]) ShutdownWithContext(ctx context.Context) (err error) {
+	i.quitOnce.Do(func() {
+		close(i.quit)
+		select {
+		case <-i.done:
+		case <-time.After(180 * time.Second):
+			err = errors.Wrap(errs.Timeout, "indexer shutdown timeout")
+		case <-ctx.Done():
+			err = errors.Wrap(ctx.Err(), "indexer shutdown context canceled")
+		}
+	})
+	return
+}
+
+func (i *Indexer[T]) Run(ctx context.Context) (err error) {
+	defer close(i.done)
+
+	ctx = logger.WithContext(ctx,
+		slog.String("package", "indexers"),
+		slog.String("processor", i.Processor.Name()),
+		slog.String("datasource", i.Datasource.Name()),
+	)
+
+	// set to -1 to start from genesis block
+	i.currentBlock, err = i.Processor.CurrentBlock(ctx)
+	if err != nil {
+		if !errors.Is(err, errs.NotFound) {
+			return errors.Wrap(err, "can't init state, failed to get indexer current block")
+		}
+		i.currentBlock.Height = -1
+	}
+
+	ticker := time.NewTicker(pollingInterval)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-i.quit:
+			logger.InfoContext(ctx, "Got quit signal, stopping indexer")
+			if err := i.Processor.Shutdown(ctx); err != nil {
+				logger.ErrorContext(ctx, "Failed to shutdown processor", slogx.Error(err))
+				return errors.Wrap(err, "processor shutdown failed")
+			}
+			return nil
+		case <-ctx.Done():
+			return nil
+		case <-ticker.C:
+			if err := i.process(ctx); err != nil {
+				logger.ErrorContext(ctx, "Indexer failed while processing", slogx.Error(err))
+				return errors.Wrap(err, "process failed")
+			}
+			logger.DebugContext(ctx, "Waiting for next polling interval")
+		}
+	}
+}
+
+func (i *Indexer[T]) process(ctx context.Context) (err error) {
+	// height range to fetch data
+	from, to := i.currentBlock.Height+1, int64(-1)
+
+	logger.InfoContext(ctx, "Start fetching input data", slog.Int64("from", from))
+	ch := make(chan []T)
+	subscription, err := i.Datasource.FetchAsync(ctx, from, to, ch)
+	if err != nil {
+		return errors.Wrap(err, "failed to fetch input data")
+	}
+	defer subscription.Unsubscribe()
+
+	for {
+		select {
+		case <-i.quit:
+			return nil
+		case inputs := <-ch:
+			// empty inputs
+			if len(inputs) == 0 {
+				continue
+			}
+
+			firstInput := inputs[0]
+			firstInputHeader := firstInput.BlockHeader()
+
+			startAt := time.Now()
+			ctx := logger.WithContext(ctx,
+				slogx.Int64("from", firstInputHeader.Height),
+				slogx.Int64("to", inputs[len(inputs)-1].BlockHeader().Height),
+			)
+
+			// validate reorg from first input
+			{
+				remoteBlockHeader := firstInputHeader
+				if i.currentBlock.Hash != (chainhash.Hash{}) && !remoteBlockHeader.PrevBlock.IsEqual(&i.currentBlock.Hash) {
+					logger.WarnContext(ctx, "Detected chain reorganization. Searching for fork point...",
+						slogx.String("event", "reorg_detected"),
+						slogx.Stringer("current_hash", i.currentBlock.Hash),
+						slogx.Stringer("expected_hash", remoteBlockHeader.PrevBlock),
+					)
+
+					var (
+						start                  = time.Now()
+						targetHeight           = i.currentBlock.Height - 1
+						beforeReorgBlockHeader = types.BlockHeader{
+							Height: -1,
+						}
+					)
+					for n := 0; n < maxReorgLookBack; n++ {
+						// TODO: concurrent fetch
+						indexedHeader, err := i.Processor.GetIndexedBlock(ctx, targetHeight)
+						if err != nil {
+							return errors.Wrapf(err, "failed to get indexed block, height: %d", targetHeight)
+						}
+
+						remoteHeader, err := i.Datasource.GetBlockHeader(ctx, targetHeight)
+						if err != nil {
+							return errors.Wrapf(err, "failed to get remote block header, height: %d", targetHeight)
+						}
+
+						// Found no reorg block
+						if indexedHeader.Hash.IsEqual(&remoteHeader.Hash) {
+							beforeReorgBlockHeader = remoteHeader
+							break
+						}
+
+						// Walk back to find fork point
+						targetHeight -= 1
+					}
+
+					// Reorg look back limit reached
+					if beforeReorgBlockHeader.Height < 0 {
+						return errors.Wrap(errs.SomethingWentWrong, "reorg look back limit reached")
+					}
+
+					logger.InfoContext(ctx, "Found reorg fork point, starting to revert data...",
+						slogx.String("event", "reorg_forkpoint"),
+						slogx.Int64("since", beforeReorgBlockHeader.Height+1),
+						slogx.Int64("total_blocks", i.currentBlock.Height-beforeReorgBlockHeader.Height),
+						slogx.Duration("search_duration", time.Since(start)),
+					)
+
+					// Revert all data since the reorg block
+					start = time.Now()
+					if err := i.Processor.RevertData(ctx, beforeReorgBlockHeader.Height+1); err != nil {
+						return errors.Wrap(err, "failed to revert data")
+					}
+
+					// Set current block to before reorg block and
+					// end current round to fetch again
+					i.currentBlock = beforeReorgBlockHeader
+					logger.Info("Fixing chain reorganization completed",
+						slogx.Int64("current_block", i.currentBlock.Height),
+						slogx.Duration("duration", time.Since(start)),
+					)
+					return nil
+				}
+			}
+
+			// validate is input is continuous and no reorg
+			prevHeader := i.currentBlock
+			for i, input := range inputs {
+				header := input.BlockHeader()
+				if header.Height != prevHeader.Height+1 {
+					return errors.Wrapf(errs.InternalError, "input is not continuous, input[%d] height: %d, input[%d] height: %d", i-1, prevHeader.Height, i, header.Height)
+				}
+
+				if prevHeader.Hash != (chainhash.Hash{}) && !header.PrevBlock.IsEqual(&prevHeader.Hash) {
+					logger.WarnContext(ctx, "Chain Reorganization occurred in the middle of batch fetching inputs, need to try to fetch again")
+
+					// end current round
+					return nil
+				}
+				prevHeader = header
+			}
+
+			ctx = logger.WithContext(ctx, slog.Int("total_inputs", len(inputs)))
+
+			// Start processing input
+			logger.InfoContext(ctx, "Processing inputs")
+			if err := i.Processor.Process(ctx, inputs); err != nil {
+				return errors.WithStack(err)
+			}
+
+			// Update current state
+			i.currentBlock = inputs[len(inputs)-1].BlockHeader()
+
+			logger.InfoContext(ctx, "Processed inputs successfully",
+				slogx.String("event", "processed_inputs"),
+				slogx.Int64("current_block", i.currentBlock.Height),
+				slogx.Duration("duration", time.Since(startAt)),
+			)
+		case <-subscription.Done():
+			// end current round
+			if err := ctx.Err(); err != nil {
+				return errors.Wrap(err, "context done")
+			}
+			return nil
+		case <-ctx.Done():
+			return errors.WithStack(ctx.Err())
+		case err := <-subscription.Err():
+			if err != nil {
+				return errors.Wrap(err, "got error while fetch async")
+			}
+		}
+	}
+}

core/indexer/interface.go

@@ -0,0 +1,42 @@
+package indexer
+
+import (
+	"context"
+	"time"
+
+	"github.com/gaze-network/indexer-network/core/types"
+)
+
+type Input interface {
+	BlockHeader() types.BlockHeader
+}
+
+type Processor[T Input] interface {
+	Name() string
+
+	// Process processes the input data and indexes it.
+	Process(ctx context.Context, inputs []T) error
+
+	// CurrentBlock returns the latest indexed block header.
+	CurrentBlock(ctx context.Context) (types.BlockHeader, error)
+
+	// GetIndexedBlock returns the indexed block header by the specified block height.
+	GetIndexedBlock(ctx context.Context, height int64) (types.BlockHeader, error)
+
+	// RevertData revert synced data to the specified block height for re-indexing.
+	RevertData(ctx context.Context, from int64) error
+
+	// VerifyStates verifies the states of the indexed data and the indexer
+	// to ensure the last shutdown was graceful and no missing data.
+	VerifyStates(ctx context.Context) error
+
+	// Shutdown gracefully stops the processor. Database connections, network calls, leftover states, etc. should be closed and cleaned up here.
+	Shutdown(ctx context.Context) error
+}
+
+type IndexerWorker interface {
+	Shutdown() error
+	ShutdownWithTimeout(timeout time.Duration) error
+	ShutdownWithContext(ctx context.Context) (err error)
+	Run(ctx context.Context) (err error)
+}

core/types/bitcoin_block.go

@@ -0,0 +1,51 @@
+package types
+
+import (
+	"time"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/wire"
+	"github.com/samber/lo"
+)
+
+type BlockHeader struct {
+	Hash       chainhash.Hash
+	Height     int64
+	Version    int32
+	PrevBlock  chainhash.Hash
+	MerkleRoot chainhash.Hash
+	Timestamp  time.Time
+	Bits       uint32
+	Nonce      uint32
+}
+
+func ParseMsgBlockHeader(src wire.BlockHeader, height int64) BlockHeader {
+	hash := src.BlockHash()
+	return BlockHeader{
+		Hash:       hash,
+		Height:     height,
+		Version:    src.Version,
+		PrevBlock:  src.PrevBlock,
+		MerkleRoot: src.MerkleRoot,
+		Timestamp:  src.Timestamp,
+		Bits:       src.Bits,
+		Nonce:      src.Nonce,
+	}
+}
+
+type Block struct {
+	Header       BlockHeader
+	Transactions []*Transaction
+}
+
+func (b *Block) BlockHeader() BlockHeader {
+	return b.Header
+}
+
+func ParseMsgBlock(src *wire.MsgBlock, height int64) *Block {
+	hash := src.Header.BlockHash()
+	return &Block{
+		Header:       ParseMsgBlockHeader(src.Header, height),
+		Transactions: lo.Map(src.Transactions, func(item *wire.MsgTx, index int) *Transaction { return ParseMsgTx(item, height, hash, uint32(index)) }),
+	}
+}

core/types/bitcoin_transaction.go

@@ -0,0 +1,73 @@
+package types
+
+import (
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/txscript"
+	"github.com/btcsuite/btcd/wire"
+	"github.com/samber/lo"
+)
+
+type Transaction struct {
+	BlockHeight int64
+	BlockHash   chainhash.Hash
+	Index       uint32
+	TxHash      chainhash.Hash
+	Version     int32
+	LockTime    uint32
+	TxIn        []*TxIn
+	TxOut       []*TxOut
+}
+
+type TxIn struct {
+	SignatureScript   []byte
+	Witness           [][]byte
+	Sequence          uint32
+	PreviousOutIndex  uint32
+	PreviousOutTxHash chainhash.Hash
+}
+
+type TxOut struct {
+	PkScript []byte
+	Value    int64
+}
+
+func (o TxOut) IsOpReturn() bool {
+	return len(o.PkScript) > 0 && o.PkScript[0] == txscript.OP_RETURN
+}
+
+// ParseMsgTx parses btcd/wire.MsgTx to Transaction.
+func ParseMsgTx(src *wire.MsgTx, blockHeight int64, blockHash chainhash.Hash, index uint32) *Transaction {
+	return &Transaction{
+		BlockHeight: blockHeight,
+		BlockHash:   blockHash,
+		Index:       index,
+		TxHash:      src.TxHash(),
+		Version:     src.Version,
+		LockTime:    src.LockTime,
+		TxIn: lo.Map(src.TxIn, func(item *wire.TxIn, _ int) *TxIn {
+			return ParseTxIn(item)
+		}),
+		TxOut: lo.Map(src.TxOut, func(item *wire.TxOut, _ int) *TxOut {
+			return ParseTxOut(item)
+		}),
+	}
+}
+
+// ParseTxIn parses btcd/wire.TxIn to TxIn.
+func ParseTxIn(src *wire.TxIn) *TxIn {
+	return &TxIn{
+		SignatureScript:   src.SignatureScript,
+		Witness:           src.Witness,
+		Sequence:          src.Sequence,
+		PreviousOutIndex:  src.PreviousOutPoint.Index,
+		PreviousOutTxHash: src.PreviousOutPoint.Hash,
+	}
+}
+
+// ParseTxOut parses btcd/wire.TxOut to TxOut.
+func ParseTxOut(src *wire.TxOut) *TxOut {
+	return &TxOut{
+		PkScript: src.PkScript,
+		Value:    src.Value,
+	}
+}

core/worker.go

@@ -1 +0,0 @@
-package core

docs/README_tr.md

@@ -0,0 +1,165 @@
+## Çeviriler
+- [English (İngilizce)](../README.md)
+
+**Son Güncelleme:** 21 Ağustos 2024
+> **Not:** Bu belge, topluluk tarafından yapılmış bir çeviridir. Ana README.md dosyasındaki güncellemeler buraya otomatik olarak yansıtılmayabilir. En güncel bilgiler için [İngilizce sürümü](../README.md) inceleyin.
+
+
+# Gaze Indexer
+
+Gaze Indexer, değiştirilebilir token protokolleri arasında **Birleştirilmiş Tutarlı API'lere** sahip Bitcoin meta-protokolleri için açık kaynaklı ve modüler bir indeksleme istemcisidir.
+
+Gaze Indexer, kullanıcıların tüm modülleri tek bir komutla tek bir monolitik örnekte veya dağıtılmış bir mikro hizmet kümesi olarak çalıştırmasına olanak tanıyan **modülerlik** göz önünde bulundurularak oluşturulmuştur.
+
+Gaze Indexer, verimli veri getirme, yeniden düzenleme algılama ve veritabanı taşıma aracı ile HERHANGİ bir meta-protokol indeksleyici oluşturmak için bir temel görevi görür.
+Bu, geliştiricilerin **gerçekten** önemli olana odaklanmasını sağlar: Meta-protokol indeksleme mantığı. Yeni meta-protokoller, yeni modüller uygulanarak kolayca eklenebilir.
+
+- [Modüller](#modules)
+  - [1. Runes](#1-runes)
+- [Kurulum](#installation)
+  - [Önkoşullar](#prerequisites)
+    - [1. Donanım Gereksinimleri](#1-hardware-requirements)
+    - [2. Bitcoin Core RPC sunucusunu hazırlayın.](#2-prepare-bitcoin-core-rpc-server)
+    - [3. Veritabanı hazırlayın.](#3-prepare-database)
+    - [4.  `config.yaml` dosyasını hazırlayın.](#4-prepare-configyaml-file)
+  - [Docker ile yükle (önerilir)](#install-with-docker-recommended)
+  - [Kaynaktan yükle](#install-from-source)
+
+## Modüller
+
+### 1. Runes
+
+Runes Dizinleyici ilk meta-protokol dizinleyicimizdir. Bitcoin işlemlerini kullanarak Runes durumlarını, işlemlerini, rün taşlarını ve bakiyelerini indeksler.
+Geçmiş Runes verilerini sorgulamak için bir dizi API ile birlikte gelir. Tüm ayrıntılar için [API Referansı] (https://api-docs.gaze.network) adresimize bakın.
+
+
+## Kurulum
+
+### Önkoşullar
+
+#### 1. Donanım Gereksinimleri
+
+Her modül farklı donanım gereksinimleri gerektirir.
+| Modül | CPU | RAM |
+| ------ | --------- | ---- |
+| Runes | 0,5 çekirdek | 1 GB |
+
+#### 2. Bitcoin Core RPC sunucusunu hazırlayın.
+
+Gaze Indexer'ın işlem verilerini kendi barındırdığı ya da QuickNode gibi yönetilen sağlayıcıları kullanan bir Bitcoin Core RPC'den alması gerekir.
+Bir Bitcoin Core'u kendiniz barındırmak için bkz. https://bitcoin.org/en/full-node.
+
+#### 3. Veritabanını hazırlayın.
+
+Gaze Indexer PostgreSQL için birinci sınıf desteğe sahiptir. Diğer veritabanlarını kullanmak isterseniz, her modülün Veri Ağ Geçidi arayüzünü karşılayan kendi veritabanı havuzunuzu uygulayabilirsiniz.
+İşte her modül için minimum veritabanı disk alanı gereksinimimiz.
+| Modül | Veritabanı Depolama Alanı (mevcut) | Veritabanı Depolama Alanı (1 yıl içinde) |
+| ------ | -------------------------- | ---------------------------- |
+| Runes | 10 GB | 150 GB |
+
+#### 4. config.yaml` dosyasını hazırlayın.
+
+```yaml
+# config.yaml
+logger:
+  output: TEXT # Output format for logs. current supported formats: "TEXT" | "JSON" | "GCP"
+  debug: false
+
+# Network to run the indexer on. Current supported networks: "mainnet" | "testnet"
+network: mainnet
+
+# Bitcoin Core RPC configuration options.
+bitcoin_node:
+  host: "" # [Required] Host of Bitcoin Core RPC (without https://)
+  user: "" # Username to authenticate with Bitcoin Core RPC
+  pass: "" # Password to authenticate with Bitcoin Core RPC
+  disable_tls: false # Set to true to disable tls
+
+# Block reporting configuration options. See Block Reporting section for more details.
+reporting:
+  disabled: false # Set to true to disable block reporting to Gaze Network. Default is false.
+  base_url: "https://indexer.api.gaze.network" # Defaults to "https://indexer.api.gaze.network" if left empty
+  name: "" # [Required if not disabled] Name of this indexer to show on the Gaze Network dashboard
+  website_url: "" # Public website URL to show on the dashboard. Can be left empty.
+  indexer_api_url: "" # Public url to access this indexer's API. Can be left empty if you want to keep your indexer private.
+
+# HTTP server configuration options.
+http_server:
+  port: 8080 # Port to run the HTTP server on for modules with HTTP API handlers.
+
+# Meta-protocol modules configuration options.
+modules:
+  # Configuration options for Runes module. Can be removed if not used.
+  runes:
+    database: "postgres" # Database to store Runes data. current supported databases: "postgres"
+    datasource: "bitcoin-node" # Data source to be used for Bitcoin data. current supported data sources: "bitcoin-node".
+    api_handlers: # API handlers to enable. current supported handlers: "http"
+      - http
+    postgres:
+      host: "localhost"
+      port: 5432
+      user: "postgres"
+      password: "password"
+      db_name: "postgres"
+      # url: "postgres://postgres:password@localhost:5432/postgres?sslmode=prefer" # [Optional] This will override other database credentials above.
+```
+
+### Docker ile yükleyin (önerilir)
+
+Kurulum kılavuzumuz için `docker-compose` kullanacağız. Docker-compose.yaml` dosyasının `config.yaml` dosyası ile aynı dizinde olduğundan emin olun.
+
+```yaml
+# docker-compose.yaml
+services:
+  gaze-indexer:
+    image: ghcr.io/gaze-network/gaze-indexer:v0.2.1
+    container_name: gaze-indexer
+    restart: unless-stopped
+    ports:
+      - 8080:8080 # Expose HTTP server port to host
+    volumes:
+      - "./config.yaml:/app/config.yaml" # mount config.yaml file to the container as "/app/config.yaml"
+    command: ["/app/main", "run", "--modules", "runes"] # Put module flags after "run" commands to select which modules to run.
+```
+
+### Kaynaktan yükleyin
+
+1. Go` sürüm 1.22 veya daha üstünü yükleyin. Go kurulum kılavuzuna bakın [burada](https://go.dev/doc/install).
+2. Bu depoyu klonlayın.
+
+```bash
+git clone https://github.com/gaze-network/gaze-indexer.git
+cd gaze-indexer
+```
+
+3. Ana ikili dosyayı oluşturun.
+
+```bash
+# Bağımlılıkları al
+go mod indir
+
+# Ana ikili dosyayı oluşturun
+go build -o gaze main.go
+```
+
+4. Veritabanı geçişlerini `migrate` komutu ve modül bayrakları ile çalıştırın.
+
+```bash
+./gaze migrate up --runes --database postgres://postgres:password@localhost:5432/postgres
+```
+
+5. Dizinleyiciyi `run` komutu ve modül bayrakları ile başlatın.
+
+```bash
+./gaze run --modules runes
+```
+
+Eğer `config.yaml` dosyası `./app/config.yaml` adresinde bulunmuyorsa, `config.yaml` dosyasının yolunu belirtmek için `--config` bayrağını kullanın.
+
+```bash
+./gaze run --modules runes --config /path/to/config.yaml
+```
+
+
+## Çeviriler
+- [English (İngilizce)](../README.md)

docs/database_migration.md

@@ -0,0 +1,34 @@
+# Database Migration
+
+We've used the golang-migrate library to manage the database migration.
+
+### Install golang-migrate
+
+```shell
+$ brew install golang-migrate
+```
+
+### Commands
+
+#### Create new database sequence
+
+```shell
+$ migrate create -ext sql -dir . -seq file_name
+```
+
+#### Up version database
+
+```shell
+$ migrate -source file://. -database "postgres://postgres:$PASSWORD@localhost:5432/postgres?sslmode=disable" up
+```
+
+#### Down version database 1 version
+
+```shell
+$ migrate -source file://. -database "postgres://postgres:$PASSWORD@localhost:5432/postgres?sslmode=disable" down 1
+```
+
+### References:
+
+- Golang-Migrate: https://github.com/golang-migrate
+- Connection string: https://www.connectionstrings.com/postgresql/

go.mod

@@ -1,3 +1,88 @@
 module github.com/gaze-network/indexer-network
 
 go 1.22
+
+require (
+	github.com/Cleverse/go-utilities/utils v0.0.0-20240119201306-d71eb577ef11
+	github.com/btcsuite/btcd v0.24.0
+	github.com/btcsuite/btcd/btcutil v1.1.5
+	github.com/btcsuite/btcd/btcutil/psbt v1.1.9
+	github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0
+	github.com/cockroachdb/errors v1.11.1
+	github.com/gaze-network/uint128 v1.3.0
+	github.com/gofiber/fiber/v2 v2.52.4
+	github.com/golang-migrate/migrate/v4 v4.17.1
+	github.com/jackc/pgx/v5 v5.5.5
+	github.com/mcosta74/pgx-slog v0.3.0
+	github.com/planxnx/concurrent-stream v0.1.5
+	github.com/samber/do/v2 v2.0.0-beta.7
+	github.com/samber/lo v1.39.0
+	github.com/shopspring/decimal v1.3.1
+	github.com/spf13/cobra v1.8.0
+	github.com/spf13/pflag v1.0.5
+	github.com/spf13/viper v1.18.2
+	github.com/stretchr/testify v1.9.0
+	github.com/valyala/fasthttp v1.51.0
+	go.uber.org/automaxprocs v1.5.3
+	golang.org/x/sync v0.7.0
+	google.golang.org/protobuf v1.33.0
+)
+
+require github.com/stretchr/objx v0.5.2 // indirect
+
+require (
+	github.com/andybalholm/brotli v1.0.5 // indirect
+	github.com/bitonicnl/verify-signed-message v0.7.1
+	github.com/btcsuite/btcd/btcec/v2 v2.3.3
+	github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f // indirect
+	github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd // indirect
+	github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792 // indirect
+	github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b // indirect
+	github.com/cockroachdb/redact v1.1.5 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/decred/dcrd/crypto/blake256 v1.0.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
+	github.com/getsentry/sentry-go v0.18.0 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/google/uuid v1.5.0 // indirect
+	github.com/hashicorp/errwrap v1.1.0 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/pgx v3.6.2+incompatible // indirect
+	github.com/jackc/puddle/v2 v2.2.1 // indirect
+	github.com/klauspost/compress v1.17.0 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/lib/pq v1.10.9 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
+	github.com/rogpeppe/go-internal v1.9.0 // indirect
+	github.com/sagikazarmark/locafero v0.4.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/samber/go-type-to-string v1.4.0 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	github.com/spf13/cast v1.6.0 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/tcplisten v1.0.0 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/exp v0.0.0-20240525044651-4c93da0ed11d // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,329 @@
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internal/config/config.go

@@ -0,0 +1,135 @@
+package config
+
+import (
+	"context"
+	"log/slog"
+	"strings"
+	"sync"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common"
+	nodesaleconfig "github.com/gaze-network/indexer-network/modules/nodesale/config"
+	runesconfig "github.com/gaze-network/indexer-network/modules/runes/config"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/gaze-network/indexer-network/pkg/logger/slogx"
+	"github.com/gaze-network/indexer-network/pkg/middleware/requestcontext"
+	"github.com/gaze-network/indexer-network/pkg/middleware/requestlogger"
+	"github.com/gaze-network/indexer-network/pkg/reportingclient"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+)
+
+var (
+	isInit bool
+	mu     sync.Mutex
+	config = &Config{
+		Logger: logger.Config{
+			Output: "TEXT",
+		},
+		Network: common.NetworkMainnet,
+		HTTPServer: HTTPServerConfig{
+			Port: 8080,
+		},
+		BitcoinNode: BitcoinNodeClient{
+			User: "user",
+			Pass: "pass",
+		},
+		Modules: Modules{
+			Runes: runesconfig.Config{
+				Datasource: "bitcoin-node",
+				Database:   "postgres",
+			},
+		},
+	}
+)
+
+type Config struct {
+	EnableModules []string               `mapstructure:"enable_modules"`
+	APIOnly       bool                   `mapstructure:"api_only"`
+	Logger        logger.Config          `mapstructure:"logger"`
+	BitcoinNode   BitcoinNodeClient      `mapstructure:"bitcoin_node"`
+	Network       common.Network         `mapstructure:"network"`
+	HTTPServer    HTTPServerConfig       `mapstructure:"http_server"`
+	Modules       Modules                `mapstructure:"modules"`
+	Reporting     reportingclient.Config `mapstructure:"reporting"`
+}
+
+type BitcoinNodeClient struct {
+	Host       string `mapstructure:"host"`
+	User       string `mapstructure:"user"`
+	Pass       string `mapstructure:"pass"`
+	DisableTLS bool   `mapstructure:"disable_tls"`
+}
+
+type Modules struct {
+	Runes    runesconfig.Config    `mapstructure:"runes"`
+	NodeSale nodesaleconfig.Config `mapstructure:"nodesale"`
+}
+
+type HTTPServerConfig struct {
+	Port      int                               `mapstructure:"port"`
+	Logger    requestlogger.Config              `mapstructure:"logger"`
+	RequestIP requestcontext.WithClientIPConfig `mapstructure:"requestip"`
+}
+
+// Parse parse the configuration from environment variables
+func Parse(configFile ...string) Config {
+	mu.Lock()
+	defer mu.Unlock()
+	return parse(configFile...)
+}
+
+// Load returns the loaded configuration
+func Load() Config {
+	mu.Lock()
+	defer mu.Unlock()
+	if isInit {
+		return *config
+	}
+	return parse()
+}
+
+// BindPFlag binds a specific key to a pflag (as used by cobra).
+// Example (where serverCmd is a Cobra instance):
+//
+//	serverCmd.Flags().Int("port", 1138, "Port to run Application server on")
+//	Viper.BindPFlag("port", serverCmd.Flags().Lookup("port"))
+func BindPFlag(key string, flag *pflag.Flag) {
+	if err := viper.BindPFlag(key, flag); err != nil {
+		logger.Panic("Something went wrong, failed to bind flag for config", slog.String("package", "config"), slogx.Error(err))
+	}
+}
+
+// SetDefault sets the default value for this key.
+// SetDefault is case-insensitive for a key.
+// Default only used when no value is provided by the user via flag, config or ENV.
+func SetDefault(key string, value any) { viper.SetDefault(key, value) }
+
+func parse(configFile ...string) Config {
+	ctx := logger.WithContext(context.Background(), slog.String("package", "config"))
+
+	if len(configFile) > 0 && configFile[0] != "" {
+		viper.SetConfigFile(configFile[0])
+	} else {
+		viper.AddConfigPath("./")
+		viper.SetConfigName("config")
+	}
+
+	viper.AutomaticEnv()
+	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+	if err := viper.ReadInConfig(); err != nil {
+		var errNotfound viper.ConfigFileNotFoundError
+		if errors.As(err, &errNotfound) {
+			logger.WarnContext(ctx, "Config file not found, use default config value", slogx.Error(err))
+		} else {
+			logger.PanicContext(ctx, "Invalid config file", slogx.Error(err))
+		}
+	}
+
+	if err := viper.Unmarshal(&config); err != nil {
+		logger.PanicContext(ctx, "Something went wrong, failed to unmarshal config", slogx.Error(err))
+	}
+
+	isInit = true
+	return *config
+}

internal/postgres/interface.go

@@ -0,0 +1,37 @@
+package postgres
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// Make sure that interfaces are compatible with the pgx package
+var (
+	_ DB = (*pgx.Conn)(nil)
+	_ DB = (*pgxpool.Conn)(nil)
+)
+
+// Queryable is an interface that can be used to execute queries and commands
+type Queryable interface {
+	Exec(context.Context, string, ...interface{}) (pgconn.CommandTag, error)
+	Query(context.Context, string, ...interface{}) (pgx.Rows, error)
+	QueryRow(context.Context, string, ...interface{}) pgx.Row
+}
+
+// TxQueryable is an interface that can be used to execute queries and commands within a transaction
+type TxQueryable interface {
+	Queryable
+	Begin(context.Context) (pgx.Tx, error)
+	BeginTx(ctx context.Context, txOptions pgx.TxOptions) (pgx.Tx, error)
+}
+
+// DB is an interface that can be used to execute queries and commands, and also to send batches
+type DB interface {
+	Queryable
+	TxQueryable
+	SendBatch(ctx context.Context, b *pgx.Batch) (br pgx.BatchResults)
+	Ping(ctx context.Context) error
+}

internal/postgres/postgres.go

@@ -0,0 +1,127 @@
+package postgres
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/Cleverse/go-utilities/utils"
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/jackc/pgx/v5/tracelog"
+	pgxslog "github.com/mcosta74/pgx-slog"
+)
+
+const (
+	DefaultMaxConns = 16
+	DefaultMinConns = 0
+	DefaultLogLevel = tracelog.LogLevelError
+)
+
+type Config struct {
+	Host     string `mapstructure:"host"`     // Default is 127.0.0.1
+	Port     string `mapstructure:"port"`     // Default is 5432
+	User     string `mapstructure:"user"`     // Default is empty
+	Password string `mapstructure:"password"` // Default is empty
+	DBName   string `mapstructure:"db_name"`  // Default is postgres
+	SSLMode  string `mapstructure:"ssl_mode"` // Default is prefer
+	URL      string `mapstructure:"url"`      // If URL is provided, other fields are ignored
+
+	MaxConns int32 `mapstructure:"max_conns"` // Default is 16
+	MinConns int32 `mapstructure:"min_conns"` // Default is 0
+
+	Debug bool `mapstructure:"debug"`
+}
+
+// New creates a new connection to the database
+func New(ctx context.Context, conf Config) (*pgx.Conn, error) {
+	// Prepare connection pool configuration
+	connConfig, err := pgx.ParseConfig(conf.String())
+	if err != nil {
+		return nil, errors.Join(errs.InvalidArgument, errors.Wrap(err, "failed while parse config"))
+	}
+	connConfig.Tracer = conf.QueryTracer()
+
+	// Create a new connection
+	conn, err := pgx.ConnectConfig(ctx, connConfig)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to create a new connection")
+	}
+
+	// Test the connection
+	if err := conn.Ping(ctx); err != nil {
+		return nil, errors.Wrap(err, "failed to connect to the database")
+	}
+
+	return conn, nil
+}
+
+// NewPool creates a new connection pool to the database
+func NewPool(ctx context.Context, conf Config) (*pgxpool.Pool, error) {
+	// Prepare connection pool configuration
+	connConfig, err := pgxpool.ParseConfig(conf.String())
+	if err != nil {
+		return nil, errors.Join(errs.InvalidArgument, errors.Wrap(err, "failed while parse config"))
+	}
+	connConfig.MaxConns = utils.Default(conf.MaxConns, DefaultMaxConns)
+	connConfig.MinConns = utils.Default(conf.MinConns, DefaultMinConns)
+	connConfig.ConnConfig.Tracer = conf.QueryTracer()
+
+	// Create a new connection pool
+	connPool, err := pgxpool.NewWithConfig(ctx, connConfig)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to create a new connection pool")
+	}
+
+	// Test the connection
+	if err := connPool.Ping(ctx); err != nil {
+		return nil, errors.Wrap(err, "failed to connect to the database")
+	}
+
+	return connPool, nil
+}
+
+// String returns the connection string (DSN format or URL format)
+func (conf Config) String() string {
+	if conf.Host == "" {
+		conf.Host = "127.0.0.1"
+	}
+	if conf.Port == "" {
+		conf.Port = "5432"
+	}
+	if conf.SSLMode == "" {
+		conf.SSLMode = "prefer"
+	}
+	if conf.DBName == "" {
+		conf.DBName = "postgres"
+	}
+
+	// Construct DSN
+	connString := fmt.Sprintf("host=%s dbname=%s port=%s sslmode=%s", conf.Host, conf.DBName, conf.Port, conf.SSLMode)
+	if conf.User != "" {
+		connString = fmt.Sprintf("%s user=%s", connString, conf.User)
+	}
+	if conf.Password != "" {
+		connString = fmt.Sprintf("%s password=%s", connString, conf.Password)
+	}
+
+	// Prefer URL over DSN format
+	if conf.URL != "" {
+		connString = conf.URL
+	}
+
+	return connString
+}
+
+func (conf Config) QueryTracer() pgx.QueryTracer {
+	loglevel := DefaultLogLevel
+	if conf.Debug {
+		loglevel = tracelog.LogLevelTrace
+	}
+	return &tracelog.TraceLog{
+		Logger:   pgxslog.NewLogger(logger.With("package", "postgres")),
+		LogLevel: loglevel,
+	}
+}

internal/subscription/client_subscription.go

@@ -0,0 +1,31 @@
+package subscription
+
+import "context"
+
+// ClientSubscription is a subscription that can be used by the client to unsubscribe from the subscription.
+type ClientSubscription[T any] struct {
+	subscription *Subscription[T]
+}
+
+func (c *ClientSubscription[T]) Unsubscribe() {
+	c.subscription.Unsubscribe()
+}
+
+func (c *ClientSubscription[T]) UnsubscribeWithContext(ctx context.Context) (err error) {
+	return c.subscription.UnsubscribeWithContext(ctx)
+}
+
+// Err returns the error channel of the subscription.
+func (c *ClientSubscription[T]) Err() <-chan error {
+	return c.subscription.Err()
+}
+
+// Done returns the done channel of the subscription
+func (c *ClientSubscription[T]) Done() <-chan struct{} {
+	return c.subscription.Done()
+}
+
+// IsClosed returns status of the subscription
+func (c *ClientSubscription[T]) IsClosed() bool {
+	return c.subscription.IsClosed()
+}

internal/subscription/subscription.go

@@ -0,0 +1,132 @@
+package subscription
+
+import (
+	"context"
+	"sync"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+)
+
+// SubscriptionBufferSize is the buffer size of the subscription channel.
+// It is used to prevent blocking the client dispatcher when the client is slow to consume values.
+var SubscriptionBufferSize = 8
+
+// Subscription is a subscription to a stream of values from the client dispatcher.
+// It has two channels: one for values, and one for errors.
+type Subscription[T any] struct {
+	// The channel which the subscription sends values.
+	channel chan<- T
+
+	// The in channel receives values from client dispatcher.
+	in chan T
+
+	// The error channel receives the error from the client dispatcher.
+	err       chan error
+	quiteOnce sync.Once
+
+	// Closing of the subscription is requested by sending on 'quit'. This is handled by
+	// the forwarding loop, which closes 'forwardDone' when it has stopped sending to
+	// sub.channel. Finally, 'unsubDone' is closed after unsubscribing on the server side.
+	quit     chan struct{}
+	quitDone chan struct{}
+}
+
+func NewSubscription[T any](channel chan<- T) *Subscription[T] {
+	subscription := &Subscription[T]{
+		channel:  channel,
+		in:       make(chan T, SubscriptionBufferSize),
+		err:      make(chan error, SubscriptionBufferSize),
+		quit:     make(chan struct{}),
+		quitDone: make(chan struct{}),
+	}
+	go func() {
+		subscription.run()
+	}()
+	return subscription
+}
+
+func (s *Subscription[T]) Unsubscribe() {
+	_ = s.UnsubscribeWithContext(context.Background())
+}
+
+func (s *Subscription[T]) UnsubscribeWithContext(ctx context.Context) (err error) {
+	s.quiteOnce.Do(func() {
+		select {
+		case s.quit <- struct{}{}:
+			<-s.quitDone
+		case <-ctx.Done():
+			err = ctx.Err()
+		}
+	})
+	return errors.WithStack(err)
+}
+
+// Client returns a client subscription for this subscription.
+func (s *Subscription[T]) Client() *ClientSubscription[T] {
+	return &ClientSubscription[T]{
+		subscription: s,
+	}
+}
+
+// Err returns the error channel of the subscription.
+func (s *Subscription[T]) Err() <-chan error {
+	return s.err
+}
+
+// Done returns the done channel of the subscription
+func (s *Subscription[T]) Done() <-chan struct{} {
+	return s.quitDone
+}
+
+// IsClosed returns status of the subscription
+func (s *Subscription[T]) IsClosed() bool {
+	select {
+	case <-s.quitDone:
+		return true
+	default:
+		return false
+	}
+}
+
+// Send sends a value to the subscription channel. If the subscription is closed, it returns an error.
+func (s *Subscription[T]) Send(ctx context.Context, value T) error {
+	select {
+	case s.in <- value:
+	case <-s.quitDone:
+		return errors.Wrap(errs.Closed, "subscription is closed")
+	case <-ctx.Done():
+		return errors.WithStack(ctx.Err())
+	}
+	return nil
+}
+
+// SendError sends an error to the subscription error channel. If the subscription is closed, it returns an error.
+func (s *Subscription[T]) SendError(ctx context.Context, err error) error {
+	select {
+	case s.err <- err:
+	case <-s.quitDone:
+		return errors.Wrap(errs.Closed, "subscription is closed")
+	case <-ctx.Done():
+		return errors.WithStack(ctx.Err())
+	}
+	return nil
+}
+
+// run starts the forwarding loop for the subscription.
+func (s *Subscription[T]) run() {
+	defer close(s.quitDone)
+
+	for {
+		select {
+		case <-s.quit:
+			return
+		case value := <-s.in:
+			select {
+			case s.channel <- value:
+			case <-s.quit:
+				return
+			}
+		}
+	}
+}

main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"context"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/gaze-network/indexer-network/cmd"
+)
+
+func main() {
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
+	cmd.Execute(ctx)
+}

modules/bitcoin/types.go

@@ -1 +0,0 @@
-package bitcoin

modules/nodesale/api/httphandler/deploy.go

@@ -0,0 +1,99 @@
+package httphandler
+
+import (
+	"fmt"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+	"github.com/gofiber/fiber/v2"
+	"google.golang.org/protobuf/encoding/protojson"
+)
+
+type deployRequest struct {
+	DeployID string `params:"deployId"`
+}
+
+type tierResponse struct {
+	PriceSat      uint32 `json:"priceSat"`
+	Limit         uint32 `json:"limit"`
+	MaxPerAddress uint32 `json:"maxPerAddress"`
+	Sold          int64  `json:"sold"`
+}
+
+type deployResponse struct {
+	Id              string         `json:"id"`
+	Name            string         `json:"name"`
+	StartsAt        int64          `json:"startsAt"`
+	EndsAt          int64          `json:"endsAt"`
+	Tiers           []tierResponse `json:"tiers"`
+	SellerPublicKey string         `json:"sellerPublicKey"`
+	MaxPerAddress   uint32         `json:"maxPerAddress"`
+	DeployTxHash    string         `json:"deployTxHash"`
+}
+
+func (h *handler) deployHandler(ctx *fiber.Ctx) error {
+	var request deployRequest
+	err := ctx.ParamsParser(&request)
+	if err != nil {
+		return errors.Wrap(err, "cannot parse param")
+	}
+	var blockHeight uint64
+	var txIndex uint32
+	count, err := fmt.Sscanf(request.DeployID, "%d-%d", &blockHeight, &txIndex)
+	if count != 2 || err != nil {
+		return errs.NewPublicError("Invalid deploy ID")
+	}
+	deploys, err := h.nodeSaleDg.GetNodeSale(ctx.UserContext(), datagateway.GetNodeSaleParams{
+		BlockHeight: blockHeight,
+		TxIndex:     txIndex,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Cannot get NodeSale from db")
+	}
+	if len(deploys) < 1 {
+		return errs.NewPublicError("NodeSale not found")
+	}
+
+	deploy := deploys[0]
+
+	nodeCount, err := h.nodeSaleDg.GetNodeCountByTierIndex(ctx.UserContext(), datagateway.GetNodeCountByTierIndexParams{
+		SaleBlock:   deploy.BlockHeight,
+		SaleTxIndex: deploy.TxIndex,
+		FromTier:    0,
+		ToTier:      uint32(len(deploy.Tiers) - 1),
+	})
+	if err != nil {
+		return errors.Wrap(err, "Cannot get node count from db")
+	}
+
+	tiers := make([]protobuf.Tier, len(deploy.Tiers))
+	tierResponses := make([]tierResponse, len(deploy.Tiers))
+	for i, tierJson := range deploy.Tiers {
+		tier := &tiers[i]
+		err := protojson.Unmarshal(tierJson, tier)
+		if err != nil {
+			return errors.Wrap(err, "Failed to decode tiers json")
+		}
+		tierResponses[i].Limit = tiers[i].Limit
+		tierResponses[i].MaxPerAddress = tiers[i].MaxPerAddress
+		tierResponses[i].PriceSat = tiers[i].PriceSat
+		tierResponses[i].Sold = nodeCount[i].Count
+	}
+
+	err = ctx.JSON(&deployResponse{
+		Id:              request.DeployID,
+		Name:            deploy.Name,
+		StartsAt:        deploy.StartsAt.UTC().Unix(),
+		EndsAt:          deploy.EndsAt.UTC().Unix(),
+		Tiers:           tierResponses,
+		SellerPublicKey: deploy.SellerPublicKey,
+		MaxPerAddress:   deploy.MaxPerAddress,
+		DeployTxHash:    deploy.DeployTxHash,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Go fiber cannot parse JSON")
+	}
+	return nil
+}

modules/nodesale/api/httphandler/events.go

@@ -0,0 +1,56 @@
+package httphandler
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+	"github.com/gofiber/fiber/v2"
+)
+
+type eventRequest struct {
+	WalletAddress string `query:"walletAddress"`
+}
+
+type eventResposne struct {
+	TxHash         string          `json:"txHash"`
+	BlockHeight    int64           `json:"blockHeight"`
+	TxIndex        int32           `json:"txIndex"`
+	WalletAddress  string          `json:"walletAddress"`
+	Action         string          `json:"action"`
+	ParsedMessage  json.RawMessage `json:"parsedMessage"`
+	BlockTimestamp time.Time       `json:"blockTimestamp"`
+	BlockHash      string          `json:"blockHash"`
+}
+
+func (h *handler) eventsHandler(ctx *fiber.Ctx) error {
+	var request eventRequest
+	err := ctx.QueryParser(&request)
+	if err != nil {
+		return errors.Wrap(err, "cannot parse query")
+	}
+
+	events, err := h.nodeSaleDg.GetEventsByWallet(ctx.UserContext(), request.WalletAddress)
+	if err != nil {
+		return errors.Wrap(err, "Can't get events from db")
+	}
+
+	responses := make([]eventResposne, len(events))
+	for i, event := range events {
+		responses[i].TxHash = event.TxHash
+		responses[i].BlockHeight = event.BlockHeight
+		responses[i].TxIndex = event.TxIndex
+		responses[i].WalletAddress = event.WalletAddress
+		responses[i].Action = protobuf.Action_name[event.Action]
+		responses[i].ParsedMessage = event.ParsedMessage
+		responses[i].BlockTimestamp = event.BlockTimestamp
+		responses[i].BlockHash = event.BlockHash
+	}
+
+	err = ctx.JSON(responses)
+	if err != nil {
+		return errors.Wrap(err, "Go fiber cannot parse JSON")
+	}
+	return nil
+}

modules/nodesale/api/httphandler/handler.go

@@ -0,0 +1,15 @@
+package httphandler
+
+import (
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+)
+
+type handler struct {
+	nodeSaleDg datagateway.NodeSaleDataGateway
+}
+
+func New(datagateway datagateway.NodeSaleDataGateway) *handler {
+	h := handler{}
+	h.nodeSaleDg = datagateway
+	return &h
+}

modules/nodesale/api/httphandler/info.go

@@ -0,0 +1,26 @@
+package httphandler
+
+import (
+	"github.com/cockroachdb/errors"
+	"github.com/gofiber/fiber/v2"
+)
+
+type infoResponse struct {
+	IndexedBlockHeight int64  `json:"indexedBlockHeight"`
+	IndexedBlockHash   string `json:"indexedBlockHash"`
+}
+
+func (h *handler) infoHandler(ctx *fiber.Ctx) error {
+	block, err := h.nodeSaleDg.GetLastProcessedBlock(ctx.UserContext())
+	if err != nil {
+		return errors.Wrap(err, "Cannot get last processed block")
+	}
+	err = ctx.JSON(infoResponse{
+		IndexedBlockHeight: block.BlockHeight,
+		IndexedBlockHash:   block.BlockHash,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Go fiber cannot parse JSON")
+	}
+	return nil
+}

modules/nodesale/api/httphandler/nodes.go

@@ -0,0 +1,82 @@
+package httphandler
+
+import (
+	"fmt"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gofiber/fiber/v2"
+)
+
+type nodeRequest struct {
+	DeployId           string `query:"deployId"`
+	OwnerPublicKey     string `query:"ownerPublicKey"`
+	DelegateePublicKey string `query:"delegateePublicKey"`
+}
+
+type nodeResponse struct {
+	DeployId            string `json:"deployId"`
+	NodeId              uint32 `json:"nodeId"`
+	TierIndex           int32  `json:"tierIndex"`
+	DelegatedTo         string `json:"delegatedTo"`
+	OwnerPublicKey      string `json:"ownerPublicKey"`
+	PurchaseTxHash      string `json:"purchaseTxHash"`
+	DelegateTxHash      string `json:"delegateTxHash"`
+	PurchaseBlockHeight int32  `json:"purchaseBlockHeight"`
+}
+
+func (h *handler) nodesHandler(ctx *fiber.Ctx) error {
+	var request nodeRequest
+	err := ctx.QueryParser(&request)
+	if err != nil {
+		return errors.Wrap(err, "cannot parse query")
+	}
+
+	ownerPublicKey := request.OwnerPublicKey
+	delegateePublicKey := request.DelegateePublicKey
+
+	var blockHeight int64
+	var txIndex int32
+	count, err := fmt.Sscanf(request.DeployId, "%d-%d", &blockHeight, &txIndex)
+	if count != 2 || err != nil {
+		return errs.NewPublicError("Invalid deploy ID")
+	}
+
+	var nodes []entity.Node
+	if ownerPublicKey == "" {
+		nodes, err = h.nodeSaleDg.GetNodesByDeployment(ctx.UserContext(), blockHeight, txIndex)
+		if err != nil {
+			return errors.Wrap(err, "Can't get nodes from db")
+		}
+	} else {
+		nodes, err = h.nodeSaleDg.GetNodesByPubkey(ctx.UserContext(), datagateway.GetNodesByPubkeyParams{
+			SaleBlock:      blockHeight,
+			SaleTxIndex:    txIndex,
+			OwnerPublicKey: ownerPublicKey,
+			DelegatedTo:    delegateePublicKey,
+		})
+		if err != nil {
+			return errors.Wrap(err, "Can't get nodes from db")
+		}
+	}
+
+	responses := make([]nodeResponse, len(nodes))
+	for i, node := range nodes {
+		responses[i].DeployId = request.DeployId
+		responses[i].NodeId = node.NodeID
+		responses[i].TierIndex = node.TierIndex
+		responses[i].DelegatedTo = node.DelegatedTo
+		responses[i].OwnerPublicKey = node.OwnerPublicKey
+		responses[i].PurchaseTxHash = node.PurchaseTxHash
+		responses[i].DelegateTxHash = node.DelegateTxHash
+		responses[i].PurchaseBlockHeight = txIndex
+	}
+
+	err = ctx.JSON(responses)
+	if err != nil {
+		return errors.Wrap(err, "Go fiber cannot parse JSON")
+	}
+	return nil
+}

modules/nodesale/api/httphandler/routes.go

@@ -0,0 +1,16 @@
+package httphandler
+
+import (
+	"github.com/gofiber/fiber/v2"
+)
+
+func (h *handler) Mount(router fiber.Router) error {
+	r := router.Group("/nodesale/v1")
+
+	r.Get("/info", h.infoHandler)
+	r.Get("/deploy/:deployId", h.deployHandler)
+	r.Get("/nodes", h.nodesHandler)
+	r.Get("/events", h.eventsHandler)
+
+	return nil
+}

modules/nodesale/config/config.go

@@ -0,0 +1,8 @@
+package config
+
+import "github.com/gaze-network/indexer-network/internal/postgres"
+
+type Config struct {
+	Postgres         postgres.Config `mapstructure:"postgres"`
+	LastBlockDefault int64           `mapstructure:"last_block_default"`
+}

modules/nodesale/database/postgresql/migrations/000001_initialize.down.sql

@@ -0,0 +1,9 @@
+BEGIN;
+
+DROP TABLE IF EXISTS nodes;
+DROP TABLE IF EXISTS node_sales;
+DROP TABLE IF EXISTS events;
+DROP TABLE IF EXISTS blocks;
+
+
+COMMIT;

modules/nodesale/database/postgresql/migrations/000001_initialize.up.sql

@@ -0,0 +1,64 @@
+BEGIN;
+
+CREATE TABLE IF NOT EXISTS blocks (
+    "block_height" BIGINT NOT NULL,
+    "block_hash" TEXT NOT NULL,
+    "module" TEXT NOT NULL,
+    PRIMARY KEY("block_height", "block_hash")
+);
+
+CREATE TABLE IF NOT EXISTS events (
+    "tx_hash" TEXT NOT NULL PRIMARY KEY,
+    "block_height" BIGINT NOT NULL,
+    "tx_index" INTEGER NOT NULL,
+    "wallet_address" TEXT NOT NULL,
+    "valid" BOOLEAN NOT NULL,
+    "action" INTEGER NOT NULL,
+    "raw_message" BYTEA NOT NULL,
+    "parsed_message" JSONB NOT NULL DEFAULT '{}',
+    "block_timestamp" TIMESTAMP NOT NULL,
+    "block_hash" TEXT NOT NULL,
+    "metadata" JSONB NOT NULL DEFAULT '{}',
+    "reason" TEXT NOT NULL DEFAULT ''
+);
+
+INSERT INTO events("tx_hash", "block_height", "tx_index",
+                 "wallet_address", "valid", "action", 
+                "raw_message", "parsed_message", "block_timestamp",
+                "block_hash", "metadata")
+VALUES ('', -1, -1,
+        '', false, -1,
+        '', '{}', NOW(),
+        '', '{}');
+
+CREATE TABLE IF NOT EXISTS node_sales (
+    "block_height" BIGINT NOT NULL,
+    "tx_index" INTEGER NOT NULL,
+    "name" TEXT NOT NULL,
+    "starts_at" TIMESTAMP NOT NULL,
+    "ends_at" TIMESTAMP NOT NULL,
+    "tiers" JSONB[] NOT NULL,
+    "seller_public_key" TEXT NOT NULL,
+    "max_per_address" INTEGER NOT NULL,
+    "deploy_tx_hash" TEXT NOT NULL REFERENCES events(tx_hash) ON DELETE CASCADE,
+    "max_discount_percentage" INTEGER NOT NULL,
+    "seller_wallet" TEXT NOT NULL,
+    PRIMARY KEY ("block_height", "tx_index")
+);
+
+CREATE TABLE IF NOT EXISTS nodes (
+    "sale_block" BIGINT NOT NULL,
+    "sale_tx_index" INTEGER NOT NULL,
+    "node_id" INTEGER NOT NULL,
+    "tier_index" INTEGER NOT NULL,
+    "delegated_to" TEXT NOT NULL DEFAULT '',
+    "owner_public_key" TEXT NOT NULL,
+    "purchase_tx_hash" TEXT NOT NULL REFERENCES events(tx_hash) ON DELETE CASCADE,
+    "delegate_tx_hash" TEXT NOT NULL DEFAULT '' REFERENCES events(tx_hash) ON DELETE SET DEFAULT,
+    PRIMARY KEY("sale_block", "sale_tx_index", "node_id"),
+    FOREIGN KEY("sale_block", "sale_tx_index") REFERENCES node_sales("block_height", "tx_index")
+);
+
+
+
+COMMIT;

modules/nodesale/database/postgresql/queries/blocks.sql

@@ -0,0 +1,15 @@
+-- name: GetLastProcessedBlock :one
+SELECT * FROM blocks ORDER BY block_height DESC LIMIT 1;  
+
+
+-- name: GetBlock :one
+SELECT * FROM blocks
+WHERE "block_height" = $1;
+
+-- name: RemoveBlockFrom :execrows
+DELETE FROM blocks
+WHERE "block_height" >= @from_block;
+
+-- name: CreateBlock :exec
+INSERT INTO blocks ("block_height", "block_hash", "module")
+VALUES ($1, $2, $3);

modules/nodesale/database/postgresql/queries/events.sql

@@ -0,0 +1,14 @@
+-- name: RemoveEventsFromBlock :execrows
+DELETE FROM events
+WHERE "block_height" >= @from_block;
+
+-- name: CreateEvent :exec
+INSERT INTO events ("tx_hash", "block_height", "tx_index", "wallet_address", "valid", "action", 
+                    "raw_message", "parsed_message", "block_timestamp", "block_hash", "metadata",
+                    "reason")
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12);
+
+-- name: GetEventsByWallet :many
+SELECT *
+FROM events
+WHERE wallet_address = $1;

modules/nodesale/database/postgresql/queries/nodes.sql

@@ -0,0 +1,57 @@
+-- name: ClearDelegate :execrows
+UPDATE nodes
+SET "delegated_to" = ''
+WHERE "delegate_tx_hash" = '';
+
+-- name: SetDelegates :execrows
+UPDATE nodes
+SET delegated_to = @delegatee, delegate_tx_hash = $3
+WHERE sale_block = $1 AND
+    sale_tx_index = $2 AND
+    node_id = ANY (@node_ids::int[]);
+
+-- name: GetNodesByIds :many
+SELECT *
+FROM nodes
+WHERE sale_block = $1 AND
+    sale_tx_index = $2 AND
+    node_id = ANY (@node_ids::int[]);
+
+
+-- name: GetNodesByOwner :many
+SELECT * 
+FROM nodes
+WHERE sale_block = $1 AND
+    sale_tx_index = $2 AND
+    owner_public_key = $3
+ORDER BY tier_index;
+
+-- name: GetNodesByPubkey :many
+SELECT nodes.*
+FROM nodes JOIN events ON nodes.purchase_tx_hash = events.tx_hash
+WHERE sale_block = $1 AND
+    sale_tx_index = $2 AND
+    owner_public_key = $3 AND
+    delegated_to = $4;
+
+-- name: CreateNode :exec
+INSERT INTO nodes (sale_block, sale_tx_index, node_id, tier_index, delegated_to, owner_public_key, purchase_tx_hash, delegate_tx_hash)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8);
+
+-- name: GetNodeCountByTierIndex :many
+SELECT (tiers.tier_index)::int AS tier_index, count(nodes.tier_index)
+FROM generate_series(@from_tier::int,@to_tier::int) AS tiers(tier_index)
+LEFT JOIN 
+	(SELECT * 
+	FROM nodes 
+	WHERE sale_block = $1 AND 
+		sale_tx_index= $2) 
+	AS nodes ON tiers.tier_index = nodes.tier_index 
+GROUP BY tiers.tier_index
+ORDER BY tiers.tier_index;
+
+-- name: GetNodesByDeployment :many
+SELECT * 
+FROM nodes
+WHERE sale_block = $1 AND
+    sale_tx_index = $2;

modules/nodesale/database/postgresql/queries/nodesales.sql

@@ -0,0 +1,9 @@
+-- name: CreateNodeSale :exec
+INSERT INTO node_sales ("block_height", "tx_index", "name", "starts_at", "ends_at", "tiers", "seller_public_key", "max_per_address", "deploy_tx_hash", "max_discount_percentage", "seller_wallet")
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11);
+
+-- name: GetNodeSale :many
+SELECT *
+FROM node_sales
+WHERE block_height = $1 AND
+    tx_index = $2;

modules/nodesale/database/postgresql/queries/test.sql

@@ -0,0 +1,3 @@
+-- name: ClearEvents :exec
+DELETE FROM events
+WHERE tx_hash <> '';

modules/nodesale/datagateway/nodesale.go

@@ -0,0 +1,77 @@
+package datagateway
+
+import (
+	"context"
+
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+)
+
+type NodeSaleDataGateway interface {
+	BeginNodeSaleTx(ctx context.Context) (NodeSaleDataGatewayWithTx, error)
+	CreateBlock(ctx context.Context, arg entity.Block) error
+	GetBlock(ctx context.Context, blockHeight int64) (*entity.Block, error)
+	GetLastProcessedBlock(ctx context.Context) (*entity.Block, error)
+	RemoveBlockFrom(ctx context.Context, fromBlock int64) (int64, error)
+	RemoveEventsFromBlock(ctx context.Context, fromBlock int64) (int64, error)
+	ClearDelegate(ctx context.Context) (int64, error)
+	GetNodesByIds(ctx context.Context, arg GetNodesByIdsParams) ([]entity.Node, error)
+	CreateEvent(ctx context.Context, arg entity.NodeSaleEvent) error
+	SetDelegates(ctx context.Context, arg SetDelegatesParams) (int64, error)
+	CreateNodeSale(ctx context.Context, arg entity.NodeSale) error
+	GetNodeSale(ctx context.Context, arg GetNodeSaleParams) ([]entity.NodeSale, error)
+	GetNodesByOwner(ctx context.Context, arg GetNodesByOwnerParams) ([]entity.Node, error)
+	CreateNode(ctx context.Context, arg entity.Node) error
+	GetNodeCountByTierIndex(ctx context.Context, arg GetNodeCountByTierIndexParams) ([]GetNodeCountByTierIndexRow, error)
+	GetNodesByPubkey(ctx context.Context, arg GetNodesByPubkeyParams) ([]entity.Node, error)
+	GetNodesByDeployment(ctx context.Context, saleBlock int64, saleTxIndex int32) ([]entity.Node, error)
+	GetEventsByWallet(ctx context.Context, walletAddress string) ([]entity.NodeSaleEvent, error)
+}
+
+type NodeSaleDataGatewayWithTx interface {
+	NodeSaleDataGateway
+	Tx
+}
+
+type GetNodesByIdsParams struct {
+	SaleBlock   uint64
+	SaleTxIndex uint32
+	NodeIds     []uint32
+}
+
+type SetDelegatesParams struct {
+	SaleBlock      uint64
+	SaleTxIndex    int32
+	Delegatee      string
+	DelegateTxHash string
+	NodeIds        []uint32
+}
+
+type GetNodeSaleParams struct {
+	BlockHeight uint64
+	TxIndex     uint32
+}
+
+type GetNodesByOwnerParams struct {
+	SaleBlock      uint64
+	SaleTxIndex    uint32
+	OwnerPublicKey string
+}
+
+type GetNodeCountByTierIndexParams struct {
+	SaleBlock   uint64
+	SaleTxIndex uint32
+	FromTier    uint32
+	ToTier      uint32
+}
+
+type GetNodeCountByTierIndexRow struct {
+	TierIndex int32
+	Count     int64
+}
+
+type GetNodesByPubkeyParams struct {
+	SaleBlock      int64
+	SaleTxIndex    int32
+	OwnerPublicKey string
+	DelegatedTo    string
+}

modules/nodesale/datagateway/tx.go

@@ -0,0 +1,12 @@
+package datagateway
+
+import "context"
+
+type Tx interface {
+	// Commit commits the DB transaction. All changes made after Begin() will be persisted. Calling Commit() will close the current transaction.
+	// If Commit() is called without a prior Begin(), it must be a no-op.
+	Commit(ctx context.Context) error
+	// Rollback rolls back the DB transaction. All changes made after Begin() will be discarded.
+	// Rollback() must be safe to call even if no transaction is active. Hence, a defer Rollback() is safe, even if Commit() was called prior with non-error conditions.
+	Rollback(ctx context.Context) error
+}

modules/nodesale/delegate.go

@@ -0,0 +1,61 @@
+package nodesale
+
+import (
+	"context"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/core/types"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	delegatevalidator "github.com/gaze-network/indexer-network/modules/nodesale/internal/validator/delegate"
+)
+
+func (p *Processor) ProcessDelegate(ctx context.Context, qtx datagateway.NodeSaleDataGatewayWithTx, block *types.Block, event NodeSaleEvent) error {
+	validator := delegatevalidator.New()
+	delegate := event.EventMessage.Delegate
+
+	_, nodes, err := validator.NodesExist(ctx, qtx, delegate.DeployID, delegate.NodeIDs)
+	if err != nil {
+		return errors.Wrap(err, "Cannot query")
+	}
+
+	for _, node := range nodes {
+		valid := validator.EqualXonlyPublicKey(node.OwnerPublicKey, event.TxPubkey)
+		if !valid {
+			break
+		}
+	}
+
+	err = qtx.CreateEvent(ctx, entity.NodeSaleEvent{
+		TxHash:         event.Transaction.TxHash.String(),
+		TxIndex:        int32(event.Transaction.Index),
+		Action:         int32(event.EventMessage.Action),
+		RawMessage:     event.RawData,
+		ParsedMessage:  event.EventJson,
+		BlockTimestamp: block.Header.Timestamp,
+		BlockHash:      event.Transaction.BlockHash.String(),
+		BlockHeight:    event.Transaction.BlockHeight,
+		Valid:          validator.Valid,
+		WalletAddress:  p.PubkeyToPkHashAddress(event.TxPubkey).EncodeAddress(),
+		Metadata:       nil,
+		Reason:         validator.Reason,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Failed to insert event")
+	}
+
+	if validator.Valid {
+		_, err = qtx.SetDelegates(ctx, datagateway.SetDelegatesParams{
+			SaleBlock:      delegate.DeployID.Block,
+			SaleTxIndex:    int32(delegate.DeployID.TxIndex),
+			Delegatee:      delegate.DelegateePublicKey,
+			DelegateTxHash: event.Transaction.TxHash.String(),
+			NodeIds:        delegate.NodeIDs,
+		})
+		if err != nil {
+			return errors.Wrap(err, "Failed to set delegate")
+		}
+	}
+
+	return nil
+}

modules/nodesale/delegate_test.go

@@ -0,0 +1,84 @@
+package nodesale
+
+import (
+	"context"
+	"encoding/hex"
+	"testing"
+
+	"github.com/btcsuite/btcd/btcec/v2"
+	"github.com/gaze-network/indexer-network/common"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway/mocks"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestDelegate(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	delegateePrivateKey, _ := btcec.NewPrivateKey()
+	delegateePubkeyHex := hex.EncodeToString(delegateePrivateKey.PubKey().SerializeCompressed())
+
+	delegateMessage := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_DELEGATE,
+		Delegate: &protobuf.ActionDelegate{
+			DelegateePublicKey: delegateePubkeyHex,
+			NodeIDs:            []uint32{9, 10},
+			DeployID: &protobuf.ActionID{
+				Block:   uint64(testBlockHeight) - 2,
+				TxIndex: uint32(testTxIndex) - 2,
+			},
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "131313131313", "131313131313", 0, 0, delegateMessage)
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == true
+	})).Return(nil)
+
+	mockDgTx.EXPECT().GetNodesByIds(mock.Anything, datagateway.GetNodesByIdsParams{
+		SaleBlock:   delegateMessage.Delegate.DeployID.Block,
+		SaleTxIndex: delegateMessage.Delegate.DeployID.TxIndex,
+		NodeIds:     []uint32{9, 10},
+	}).Return([]entity.Node{
+		{
+			SaleBlock:      delegateMessage.Delegate.DeployID.Block,
+			SaleTxIndex:    delegateMessage.Delegate.DeployID.TxIndex,
+			NodeID:         9,
+			TierIndex:      1,
+			DelegatedTo:    "",
+			OwnerPublicKey: buyerPubkeyHex,
+			PurchaseTxHash: mock.Anything,
+			DelegateTxHash: "",
+		},
+		{
+			SaleBlock:      delegateMessage.Delegate.DeployID.Block,
+			SaleTxIndex:    delegateMessage.Delegate.DeployID.TxIndex,
+			NodeID:         10,
+			TierIndex:      2,
+			DelegatedTo:    "",
+			OwnerPublicKey: buyerPubkeyHex,
+			PurchaseTxHash: mock.Anything,
+			DelegateTxHash: "",
+		},
+	}, nil)
+
+	mockDgTx.EXPECT().SetDelegates(mock.Anything, datagateway.SetDelegatesParams{
+		SaleBlock:      delegateMessage.Delegate.DeployID.Block,
+		SaleTxIndex:    int32(delegateMessage.Delegate.DeployID.TxIndex),
+		Delegatee:      delegateMessage.Delegate.DelegateePublicKey,
+		DelegateTxHash: event.Transaction.TxHash.String(),
+		NodeIds:        delegateMessage.Delegate.NodeIDs,
+	}).Return(2, nil)
+
+	err := p.ProcessDelegate(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+}

modules/nodesale/deploy.go

@@ -0,0 +1,67 @@
+package nodesale
+
+import (
+	"context"
+	"time"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/core/types"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/validator"
+	"google.golang.org/protobuf/encoding/protojson"
+)
+
+func (p *Processor) ProcessDeploy(ctx context.Context, qtx datagateway.NodeSaleDataGatewayWithTx, block *types.Block, event NodeSaleEvent) error {
+	deploy := event.EventMessage.Deploy
+
+	validator := validator.New()
+
+	validator.EqualXonlyPublicKey(deploy.SellerPublicKey, event.TxPubkey)
+
+	err := qtx.CreateEvent(ctx, entity.NodeSaleEvent{
+		TxHash:         event.Transaction.TxHash.String(),
+		TxIndex:        int32(event.Transaction.Index),
+		Action:         int32(event.EventMessage.Action),
+		RawMessage:     event.RawData,
+		ParsedMessage:  event.EventJson,
+		BlockTimestamp: block.Header.Timestamp,
+		BlockHash:      event.Transaction.BlockHash.String(),
+		BlockHeight:    event.Transaction.BlockHeight,
+		Valid:          validator.Valid,
+		WalletAddress:  p.PubkeyToPkHashAddress(event.TxPubkey).EncodeAddress(),
+		Metadata:       nil,
+		Reason:         validator.Reason,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Failed to insert event")
+	}
+	if validator.Valid {
+		tiers := make([][]byte, len(deploy.Tiers))
+		for i, tier := range deploy.Tiers {
+			tierJson, err := protojson.Marshal(tier)
+			if err != nil {
+				return errors.Wrap(err, "Failed to parse tiers to json")
+			}
+			tiers[i] = tierJson
+		}
+		err = qtx.CreateNodeSale(ctx, entity.NodeSale{
+			BlockHeight:           uint64(event.Transaction.BlockHeight),
+			TxIndex:               event.Transaction.Index,
+			Name:                  deploy.Name,
+			StartsAt:              time.Unix(int64(deploy.StartsAt), 0),
+			EndsAt:                time.Unix(int64(deploy.EndsAt), 0),
+			Tiers:                 tiers,
+			SellerPublicKey:       deploy.SellerPublicKey,
+			MaxPerAddress:         deploy.MaxPerAddress,
+			DeployTxHash:          event.Transaction.TxHash.String(),
+			MaxDiscountPercentage: int32(deploy.MaxDiscountPercentage),
+			SellerWallet:          deploy.SellerWallet,
+		})
+		if err != nil {
+			return errors.Wrap(err, "Failed to insert NodeSale")
+		}
+	}
+
+	return nil
+}

modules/nodesale/deploy_test.go

@@ -0,0 +1,139 @@
+package nodesale
+
+import (
+	"context"
+	"encoding/hex"
+	"testing"
+	"time"
+
+	"github.com/btcsuite/btcd/btcec/v2"
+	"github.com/gaze-network/indexer-network/common"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway/mocks"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+	"github.com/samber/lo"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"google.golang.org/protobuf/encoding/protojson"
+)
+
+func TestDeployInvalid(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	prvKey, err := btcec.NewPrivateKey()
+	require.NoError(t, err)
+
+	strangerKey, err := btcec.NewPrivateKey()
+	require.NoError(t, err)
+
+	strangerPubkeyHex := hex.EncodeToString(strangerKey.PubKey().SerializeCompressed())
+
+	sellerWallet := p.PubkeyToPkHashAddress(prvKey.PubKey())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_DEPLOY,
+		Deploy: &protobuf.ActionDeploy{
+			Name:     t.Name(),
+			StartsAt: 100,
+			EndsAt:   200,
+			Tiers: []*protobuf.Tier{
+				{
+					PriceSat:      100,
+					Limit:         5,
+					MaxPerAddress: 100,
+				},
+				{
+					PriceSat:      200,
+					Limit:         5,
+					MaxPerAddress: 100,
+				},
+			},
+			SellerPublicKey:       strangerPubkeyHex,
+			MaxPerAddress:         100,
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}
+
+	event, block := assembleTestEvent(prvKey, "0101010101", "0101010101", 0, 0, message)
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false
+	})).Return(nil)
+
+	err = p.ProcessDeploy(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+
+	mockDgTx.AssertNotCalled(t, "CreateNodeSale")
+}
+
+func TestDeployValid(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	privateKey, err := btcec.NewPrivateKey()
+	require.NoError(t, err)
+
+	pubkeyHex := hex.EncodeToString(privateKey.PubKey().SerializeCompressed())
+
+	sellerWallet := p.PubkeyToPkHashAddress(privateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_DEPLOY,
+		Deploy: &protobuf.ActionDeploy{
+			Name:     t.Name(),
+			StartsAt: uint32(startAt.UTC().Unix()),
+			EndsAt:   uint32(endAt.UTC().Unix()),
+			Tiers: []*protobuf.Tier{
+				{
+					PriceSat:      100,
+					Limit:         5,
+					MaxPerAddress: 100,
+				},
+				{
+					PriceSat:      200,
+					Limit:         5,
+					MaxPerAddress: 100,
+				},
+			},
+			SellerPublicKey:       pubkeyHex,
+			MaxPerAddress:         100,
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}
+
+	event, block := assembleTestEvent(privateKey, "0202020202", "0202020202", 0, 0, message)
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == true
+	})).Return(nil)
+
+	tiers := lo.Map(message.Deploy.Tiers, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+
+	mockDgTx.EXPECT().CreateNodeSale(mock.Anything, entity.NodeSale{
+		BlockHeight:           uint64(event.Transaction.BlockHeight),
+		TxIndex:               uint32(event.Transaction.Index),
+		Name:                  message.Deploy.Name,
+		StartsAt:              time.Unix(int64(message.Deploy.StartsAt), 0),
+		EndsAt:                time.Unix(int64(message.Deploy.EndsAt), 0),
+		Tiers:                 tiers,
+		SellerPublicKey:       message.Deploy.SellerPublicKey,
+		MaxPerAddress:         message.Deploy.MaxPerAddress,
+		DeployTxHash:          event.Transaction.TxHash.String(),
+		MaxDiscountPercentage: int32(message.Deploy.MaxDiscountPercentage),
+		SellerWallet:          message.Deploy.SellerWallet,
+	}).Return(nil)
+
+	p.ProcessDeploy(ctx, mockDgTx, block, event)
+}

modules/nodesale/internal/entity/entity.go

@@ -0,0 +1,55 @@
+package entity
+
+import "time"
+
+type Block struct {
+	BlockHeight int64
+	BlockHash   string
+	Module      string
+}
+
+type Node struct {
+	SaleBlock      uint64
+	SaleTxIndex    uint32
+	NodeID         uint32
+	TierIndex      int32
+	DelegatedTo    string
+	OwnerPublicKey string
+	PurchaseTxHash string
+	DelegateTxHash string
+}
+
+type NodeSale struct {
+	BlockHeight           uint64
+	TxIndex               uint32
+	Name                  string
+	StartsAt              time.Time
+	EndsAt                time.Time
+	Tiers                 [][]byte
+	SellerPublicKey       string
+	MaxPerAddress         uint32
+	DeployTxHash          string
+	MaxDiscountPercentage int32
+	SellerWallet          string
+}
+
+type NodeSaleEvent struct {
+	TxHash         string
+	BlockHeight    int64
+	TxIndex        int32
+	WalletAddress  string
+	Valid          bool
+	Action         int32
+	RawMessage     []byte
+	ParsedMessage  []byte
+	BlockTimestamp time.Time
+	BlockHash      string
+	Metadata       *MetadataEventPurchase
+	Reason         string
+}
+
+type MetadataEventPurchase struct {
+	ExpectedTotalAmountDiscounted uint64
+	ReportedTotalAmount           uint64
+	PaidTotalAmount               uint64
+}

modules/nodesale/internal/validator/delegate/validator.go

@@ -0,0 +1,51 @@
+package delegate
+
+import (
+	"context"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/validator"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+)
+
+type DelegateValidator struct {
+	validator.Validator
+}
+
+func New() *DelegateValidator {
+	v := validator.New()
+	return &DelegateValidator{
+		Validator: *v,
+	}
+}
+
+func (v *DelegateValidator) NodesExist(
+	ctx context.Context,
+	qtx datagateway.NodeSaleDataGatewayWithTx,
+	deployId *protobuf.ActionID,
+	nodeIds []uint32,
+) (bool, []entity.Node, error) {
+	if !v.Valid {
+		return false, nil, nil
+	}
+
+	nodes, err := qtx.GetNodesByIds(ctx, datagateway.GetNodesByIdsParams{
+		SaleBlock:   deployId.Block,
+		SaleTxIndex: deployId.TxIndex,
+		NodeIds:     nodeIds,
+	})
+	if err != nil {
+		v.Valid = false
+		return v.Valid, nil, errors.Wrap(err, "Failed to get nodes")
+	}
+
+	if len(nodeIds) != len(nodes) {
+		v.Valid = false
+		return v.Valid, nil, nil
+	}
+
+	v.Valid = true
+	return v.Valid, nodes, nil
+}

modules/nodesale/internal/validator/errors.go

@@ -0,0 +1,6 @@
+package validator
+
+const (
+	INVALID_PUBKEY_FORMAT = "Cannot parse public key"
+	INVALID_PUBKEY        = "Invalid public key"
+)

modules/nodesale/internal/validator/purchase/errors.go

@@ -0,0 +1,17 @@
+package purchase
+
+const (
+	DEPLOYID_NOT_FOUND         = "Depoloy ID not found."
+	PURCHASE_TIMEOUT           = "Purchase timeout."
+	BLOCK_HEIGHT_TIMEOUT       = "Block height over timeout block"
+	INVALID_SIGNATURE_FORMAT   = "Cannot parse signature."
+	INVALID_SIGNATURE          = "Invalid Signature."
+	INVALID_TIER_JSON          = "Invalid Tier format"
+	INVALID_NODE_ID            = "Invalid NodeId."
+	NODE_ALREADY_PURCHASED     = "Some node has been purchased."
+	INVALID_SELLER_ADDR_FORMAT = "Invalid seller address."
+	INVALID_PAYMENT            = "Total amount paid less than reported price"
+	INSUFFICIENT_FUND          = "Insufficient fund"
+	OVER_LIMIT_PER_ADDR        = "Purchase over limit per address."
+	OVER_LIMIT_PER_TIER        = "Purchase over limit per tier."
+)

modules/nodesale/internal/validator/purchase/validator.go

@@ -0,0 +1,283 @@
+package purchase
+
+import (
+	"context"
+	"encoding/hex"
+	"slices"
+	"time"
+
+	"github.com/btcsuite/btcd/btcec/v2"
+	"github.com/btcsuite/btcd/btcec/v2/ecdsa"
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/validator"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+	"google.golang.org/protobuf/encoding/protojson"
+	"google.golang.org/protobuf/proto"
+)
+
+type PurchaseValidator struct {
+	validator.Validator
+}
+
+func New() *PurchaseValidator {
+	v := validator.New()
+	return &PurchaseValidator{
+		Validator: *v,
+	}
+}
+
+func (v *PurchaseValidator) NodeSaleExists(ctx context.Context, qtx datagateway.NodeSaleDataGatewayWithTx, payload *protobuf.PurchasePayload) (bool, *entity.NodeSale, error) {
+	if !v.Valid {
+		return false, nil, nil
+	}
+	// check node existed
+	deploys, err := qtx.GetNodeSale(ctx, datagateway.GetNodeSaleParams{
+		BlockHeight: payload.DeployID.Block,
+		TxIndex:     payload.DeployID.TxIndex,
+	})
+	if err != nil {
+		v.Valid = false
+		return v.Valid, nil, errors.Wrap(err, "Failed to Get NodeSale")
+	}
+	if len(deploys) < 1 {
+		v.Valid = false
+		v.Reason = DEPLOYID_NOT_FOUND
+		return v.Valid, nil, nil
+	}
+	v.Valid = true
+	return v.Valid, &deploys[0], nil
+}
+
+func (v *PurchaseValidator) ValidTimestamp(deploy *entity.NodeSale, timestamp time.Time) bool {
+	if !v.Valid {
+		return false
+	}
+	if timestamp.Before(deploy.StartsAt) ||
+		timestamp.After(deploy.EndsAt) {
+		v.Valid = false
+		v.Reason = PURCHASE_TIMEOUT
+		return v.Valid
+	}
+	v.Valid = true
+	return v.Valid
+}
+
+func (v *PurchaseValidator) WithinTimeoutBlock(timeOutBlock uint64, blockHeight uint64) bool {
+	if !v.Valid {
+		return false
+	}
+	if timeOutBlock == 0 {
+		// No timeout
+		v.Valid = true
+		return v.Valid
+	}
+	if timeOutBlock < blockHeight {
+		v.Valid = false
+		v.Reason = BLOCK_HEIGHT_TIMEOUT
+		return v.Valid
+	}
+	v.Valid = true
+	return v.Valid
+}
+
+func (v *PurchaseValidator) VerifySignature(purchase *protobuf.ActionPurchase, deploy *entity.NodeSale) bool {
+	if !v.Valid {
+		return false
+	}
+	payload := purchase.Payload
+	payloadBytes, _ := proto.Marshal(payload)
+	signatureBytes, _ := hex.DecodeString(purchase.SellerSignature)
+	signature, err := ecdsa.ParseSignature(signatureBytes)
+	if err != nil {
+		v.Valid = false
+		v.Reason = INVALID_SIGNATURE_FORMAT
+		return v.Valid
+	}
+	hash := chainhash.DoubleHashB(payloadBytes)
+	pubkeyBytes, _ := hex.DecodeString(deploy.SellerPublicKey)
+	pubKey, _ := btcec.ParsePubKey(pubkeyBytes)
+	verified := signature.Verify(hash[:], pubKey)
+	if !verified {
+		v.Valid = false
+		v.Reason = INVALID_SIGNATURE
+		return v.Valid
+	}
+	v.Valid = true
+	return v.Valid
+}
+
+type TierMap struct {
+	Tiers            []protobuf.Tier
+	BuyingTiersCount []uint32
+	NodeIdToTier     map[uint32]int32
+}
+
+func (v *PurchaseValidator) ValidTiers(
+	payload *protobuf.PurchasePayload,
+	deploy *entity.NodeSale,
+) (bool, TierMap) {
+	if !v.Valid {
+		return false, TierMap{}
+	}
+	tiers := make([]protobuf.Tier, len(deploy.Tiers))
+	buyingTiersCount := make([]uint32, len(tiers))
+	nodeIdToTier := make(map[uint32]int32)
+
+	for i, tierJson := range deploy.Tiers {
+		tier := &tiers[i]
+		err := protojson.Unmarshal(tierJson, tier)
+		if err != nil {
+			v.Valid = false
+			v.Reason = INVALID_TIER_JSON
+			return v.Valid, TierMap{}
+		}
+	}
+
+	slices.Sort(payload.NodeIDs)
+
+	var currentTier int32 = -1
+	var tierSum uint32 = 0
+	for _, nodeId := range payload.NodeIDs {
+		for nodeId >= tierSum && currentTier < int32(len(tiers)-1) {
+			currentTier++
+			tierSum += tiers[currentTier].Limit
+		}
+		if nodeId < tierSum {
+			buyingTiersCount[currentTier]++
+			nodeIdToTier[nodeId] = currentTier
+		} else {
+			v.Valid = false
+			v.Reason = INVALID_NODE_ID
+			return false, TierMap{}
+		}
+	}
+	v.Valid = true
+	return v.Valid, TierMap{
+		Tiers:            tiers,
+		BuyingTiersCount: buyingTiersCount,
+		NodeIdToTier:     nodeIdToTier,
+	}
+}
+
+func (v *PurchaseValidator) ValidUnpurchasedNodes(
+	ctx context.Context,
+	qtx datagateway.NodeSaleDataGatewayWithTx,
+	payload *protobuf.PurchasePayload,
+) (bool, error) {
+	if !v.Valid {
+		return false, nil
+	}
+
+	// valid unpurchased node ID
+	nodes, err := qtx.GetNodesByIds(ctx, datagateway.GetNodesByIdsParams{
+		SaleBlock:   payload.DeployID.Block,
+		SaleTxIndex: payload.DeployID.TxIndex,
+		NodeIds:     payload.NodeIDs,
+	})
+	if err != nil {
+		v.Valid = false
+		return v.Valid, errors.Wrap(err, "Failed to Get nodes")
+	}
+	if len(nodes) > 0 {
+		v.Valid = false
+		v.Reason = NODE_ALREADY_PURCHASED
+		return false, nil
+	}
+	v.Valid = true
+	return true, nil
+}
+
+func (v *PurchaseValidator) ValidPaidAmount(
+	payload *protobuf.PurchasePayload,
+	deploy *entity.NodeSale,
+	txPaid uint64,
+	tiers []protobuf.Tier,
+	buyingTiersCount []uint32,
+	network *chaincfg.Params,
+) (bool, *entity.MetadataEventPurchase) {
+	if !v.Valid {
+		return false, nil
+	}
+
+	meta := entity.MetadataEventPurchase{}
+
+	meta.PaidTotalAmount = txPaid
+	meta.ReportedTotalAmount = uint64(payload.TotalAmountSat)
+	// total amount paid is greater than report paid
+	if txPaid < uint64(payload.TotalAmountSat) {
+		v.Valid = false
+		v.Reason = INVALID_PAYMENT
+		return v.Valid, nil
+	}
+	// calculate total price
+	var totalPrice uint64 = 0
+	for i := 0; i < len(tiers); i++ {
+		totalPrice += uint64(buyingTiersCount[i] * tiers[i].PriceSat)
+	}
+	// report paid is greater than max discounted total price
+	maxDiscounted := totalPrice * (100 - uint64(deploy.MaxDiscountPercentage))
+	decimal := maxDiscounted % 100
+	maxDiscounted /= 100
+	if decimal%100 >= 50 {
+		maxDiscounted++
+	}
+	meta.ExpectedTotalAmountDiscounted = maxDiscounted
+	if uint64(payload.TotalAmountSat) < maxDiscounted {
+		v.Valid = false
+		v.Reason = INSUFFICIENT_FUND
+		return v.Valid, nil
+	}
+	v.Valid = true
+	return v.Valid, &meta
+}
+
+func (v *PurchaseValidator) WithinLimit(
+	ctx context.Context,
+	qtx datagateway.NodeSaleDataGatewayWithTx,
+	payload *protobuf.PurchasePayload,
+	deploy *entity.NodeSale,
+	tiers []protobuf.Tier,
+	buyingTiersCount []uint32,
+) (bool, error) {
+	if !v.Valid {
+		return false, nil
+	}
+
+	// check node limit
+	// get all selled by seller and owned by buyer
+	buyerOwnedNodes, err := qtx.GetNodesByOwner(ctx, datagateway.GetNodesByOwnerParams{
+		SaleBlock:      deploy.BlockHeight,
+		SaleTxIndex:    deploy.TxIndex,
+		OwnerPublicKey: payload.BuyerPublicKey,
+	})
+	if err != nil {
+		v.Valid = false
+		return v.Valid, errors.Wrap(err, "Failed to GetNodesByOwner")
+	}
+	if len(buyerOwnedNodes)+len(payload.NodeIDs) > int(deploy.MaxPerAddress) {
+		v.Valid = false
+		v.Reason = "Purchase over limit per address."
+		return v.Valid, nil
+	}
+
+	// check limit
+	// count each tiers
+	// check limited for each tier
+	ownedTiersCount := make([]uint32, len(tiers))
+	for _, node := range buyerOwnedNodes {
+		ownedTiersCount[node.TierIndex]++
+	}
+	for i := 0; i < len(tiers); i++ {
+		if ownedTiersCount[i]+buyingTiersCount[i] > tiers[i].MaxPerAddress {
+			v.Valid = false
+			v.Reason = "Purchase over limit per tier."
+			return v.Valid, nil
+		}
+	}
+	v.Valid = true
+	return v.Valid, nil
+}

modules/nodesale/internal/validator/validator.go

@@ -0,0 +1,44 @@
+package validator
+
+import (
+	"bytes"
+	"encoding/hex"
+
+	"github.com/btcsuite/btcd/btcec/v2"
+)
+
+type Validator struct {
+	Valid  bool
+	Reason string
+}
+
+func New() *Validator {
+	return &Validator{
+		Valid: true,
+	}
+}
+
+func (v *Validator) EqualXonlyPublicKey(target string, expected *btcec.PublicKey) bool {
+	if !v.Valid {
+		return false
+	}
+	targetBytes, err := hex.DecodeString(target)
+	if err != nil {
+		v.Valid = false
+		v.Reason = INVALID_PUBKEY_FORMAT
+	}
+
+	targetPubKey, err := btcec.ParsePubKey(targetBytes)
+	if err != nil {
+		v.Valid = false
+		v.Reason = INVALID_PUBKEY_FORMAT
+	}
+	xOnlyTargetPubKey := btcec.ToSerialized(targetPubKey).SchnorrSerialized()
+	xOnlyExpectedPubKey := btcec.ToSerialized(expected).SchnorrSerialized()
+
+	v.Valid = bytes.Equal(xOnlyTargetPubKey[:], xOnlyExpectedPubKey[:])
+	if !v.Valid {
+		v.Reason = INVALID_PUBKEY
+	}
+	return v.Valid
+}

modules/nodesale/nodesale.go

@@ -0,0 +1,61 @@
+package nodesale
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/btcsuite/btcd/rpcclient"
+	"github.com/gaze-network/indexer-network/core/datasources"
+	"github.com/gaze-network/indexer-network/core/indexer"
+	"github.com/gaze-network/indexer-network/internal/config"
+	"github.com/gaze-network/indexer-network/internal/postgres"
+	"github.com/gaze-network/indexer-network/modules/nodesale/api/httphandler"
+	repository "github.com/gaze-network/indexer-network/modules/nodesale/repository/postgres"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/gofiber/fiber/v2"
+	"github.com/samber/do/v2"
+)
+
+var NODESALE_MAGIC = []byte{0x6e, 0x73, 0x6f, 0x70}
+
+const (
+	Version = "v0.0.1-alpha"
+)
+
+func New(injector do.Injector) (indexer.IndexerWorker, error) {
+	ctx := do.MustInvoke[context.Context](injector)
+	conf := do.MustInvoke[config.Config](injector)
+
+	btcClient := do.MustInvoke[*rpcclient.Client](injector)
+	datasource := datasources.NewBitcoinNode(btcClient)
+
+	pg, err := postgres.NewPool(ctx, conf.Modules.NodeSale.Postgres)
+	if err != nil {
+		return nil, fmt.Errorf("Can't create postgres connection : %w", err)
+	}
+	var cleanupFuncs []func(context.Context) error
+	cleanupFuncs = append(cleanupFuncs, func(ctx context.Context) error {
+		pg.Close()
+		return nil
+	})
+	repository := repository.NewRepository(pg)
+
+	processor := &Processor{
+		NodeSaleDg:       repository,
+		BtcClient:        datasource,
+		Network:          conf.Network,
+		cleanupFuncs:     cleanupFuncs,
+		lastBlockDefault: conf.Modules.NodeSale.LastBlockDefault,
+	}
+
+	httpServer := do.MustInvoke[*fiber.App](injector)
+	nodeSaleHandler := httphandler.New(repository)
+	if err := nodeSaleHandler.Mount(httpServer); err != nil {
+		return nil, fmt.Errorf("Can't mount nodesale API : %w", err)
+	}
+	logger.InfoContext(ctx, "Mounted nodesale HTTP handler")
+
+	indexer := indexer.New(processor, datasource)
+	logger.InfoContext(ctx, "NodeSale module started.")
+	return indexer, nil
+}

modules/nodesale/nodesale_test.go

@@ -0,0 +1,61 @@
+package nodesale
+
+import (
+	"time"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/txscript"
+	"github.com/decred/dcrd/dcrec/secp256k1/v4"
+	"github.com/gaze-network/indexer-network/core/types"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+	"google.golang.org/protobuf/encoding/protojson"
+	"google.golang.org/protobuf/proto"
+)
+
+var (
+	testBlockHeight uint64 = 101
+	testTxIndex     uint32 = 1
+)
+
+func assembleTestEvent(privateKey *secp256k1.PrivateKey, blockHashHex, txHashHex string, blockHeight uint64, txIndex uint32, message *protobuf.NodeSaleEvent) (NodeSaleEvent, *types.Block) {
+	blockHash, _ := chainhash.NewHashFromStr(blockHashHex)
+	txHash, _ := chainhash.NewHashFromStr(txHashHex)
+
+	rawData, _ := proto.Marshal(message)
+
+	builder := txscript.NewScriptBuilder()
+	builder.AddOp(txscript.OP_FALSE)
+	builder.AddOp(txscript.OP_IF)
+	builder.AddData(rawData)
+	builder.AddOp(txscript.OP_ENDIF)
+
+	messageJson, _ := protojson.Marshal(message)
+
+	if blockHeight == 0 {
+		blockHeight = testBlockHeight
+		testBlockHeight++
+	}
+	if txIndex == 0 {
+		txIndex = testTxIndex
+		testTxIndex++
+	}
+
+	event := NodeSaleEvent{
+		Transaction: &types.Transaction{
+			BlockHeight: int64(blockHeight),
+			BlockHash:   *blockHash,
+			Index:       uint32(txIndex),
+			TxHash:      *txHash,
+		},
+		RawData:      rawData,
+		EventMessage: message,
+		EventJson:    messageJson,
+		TxPubkey:     privateKey.PubKey(),
+	}
+	block := &types.Block{
+		Header: types.BlockHeader{
+			Timestamp: time.Now().UTC(),
+		},
+	}
+	return event, block
+}

modules/nodesale/processor.go

@@ -0,0 +1,303 @@
+package nodesale
+
+import (
+	"bytes"
+	"context"
+
+	"github.com/btcsuite/btcd/btcec/v2"
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/txscript"
+	"github.com/gaze-network/indexer-network/common"
+	"github.com/gaze-network/indexer-network/core/indexer"
+	"github.com/gaze-network/indexer-network/core/types"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/gaze-network/indexer-network/pkg/logger/slogx"
+	"google.golang.org/protobuf/encoding/protojson"
+	"google.golang.org/protobuf/proto"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/core/datasources"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+)
+
+type NodeSaleEvent struct {
+	Transaction  *types.Transaction
+	EventMessage *protobuf.NodeSaleEvent
+	EventJson    []byte
+	TxPubkey     *btcec.PublicKey
+	RawData      []byte
+	InputValue   uint64
+}
+
+func NewProcessor(repository datagateway.NodeSaleDataGateway,
+	datasource *datasources.BitcoinNodeDatasource,
+	network common.Network,
+	cleanupFuncs []func(context.Context) error,
+	lastBlockDefault int64,
+) *Processor {
+	return &Processor{
+		NodeSaleDg:       repository,
+		BtcClient:        datasource,
+		Network:          network,
+		cleanupFuncs:     cleanupFuncs,
+		lastBlockDefault: lastBlockDefault,
+	}
+}
+
+func (p *Processor) Shutdown(ctx context.Context) error {
+	for _, cleanupFunc := range p.cleanupFuncs {
+		err := cleanupFunc(ctx)
+		if err != nil {
+			return errors.Wrap(err, "cleanup function error")
+		}
+	}
+	return nil
+}
+
+type Processor struct {
+	NodeSaleDg       datagateway.NodeSaleDataGateway
+	BtcClient        *datasources.BitcoinNodeDatasource
+	Network          common.Network
+	cleanupFuncs     []func(context.Context) error
+	lastBlockDefault int64
+}
+
+// CurrentBlock implements indexer.Processor.
+func (p *Processor) CurrentBlock(ctx context.Context) (types.BlockHeader, error) {
+	block, err := p.NodeSaleDg.GetLastProcessedBlock(ctx)
+	if err != nil {
+		logger.InfoContext(ctx, "Couldn't get last processed block. Start from NODESALE_LAST_BLOCK_DEFAULT.",
+			slogx.Int64("currentBlock", p.lastBlockDefault))
+		header, err := p.BtcClient.GetBlockHeader(ctx, p.lastBlockDefault)
+		if err != nil {
+			return types.BlockHeader{}, errors.Wrap(err, "Cannot get default block from bitcoin node")
+		}
+		return types.BlockHeader{
+			Hash:   header.Hash,
+			Height: p.lastBlockDefault,
+		}, nil
+	}
+
+	hash, err := chainhash.NewHashFromStr(block.BlockHash)
+	if err != nil {
+		logger.PanicContext(ctx, "Invalid hash format found in Database.")
+	}
+	return types.BlockHeader{
+		Hash:   *hash,
+		Height: block.BlockHeight,
+	}, nil
+}
+
+// GetIndexedBlock implements indexer.Processor.
+func (p *Processor) GetIndexedBlock(ctx context.Context, height int64) (types.BlockHeader, error) {
+	block, err := p.NodeSaleDg.GetBlock(ctx, height)
+	if err != nil {
+		return types.BlockHeader{}, errors.Wrapf(err, "Block %d not found", height)
+	}
+	hash, err := chainhash.NewHashFromStr(block.BlockHash)
+	if err != nil {
+		logger.PanicContext(ctx, "Invalid hash format found in Database.")
+	}
+	return types.BlockHeader{
+		Hash:   *hash,
+		Height: block.BlockHeight,
+	}, nil
+}
+
+// Name implements indexer.Processor.
+func (p *Processor) Name() string {
+	return "nodesale"
+}
+
+func extractNodeSaleData(witness [][]byte) (data []byte, internalPubkey *btcec.PublicKey, isNodeSale bool) {
+	tokenizer, controlBlock, isTapScript := extractTapScript(witness)
+	if !isTapScript {
+		return []byte{}, nil, false
+	}
+	state := 0
+	for tokenizer.Next() {
+		switch state {
+		case 0:
+			if tokenizer.Opcode() == txscript.OP_0 {
+				state++
+			} else {
+				state = 0
+			}
+		case 1:
+			if tokenizer.Opcode() == txscript.OP_IF {
+				state++
+			} else {
+				state = 0
+			}
+		case 2:
+			if tokenizer.Opcode() == txscript.OP_DATA_4 &&
+				bytes.Equal(tokenizer.Data(), NODESALE_MAGIC) {
+				state++
+			} else {
+				state = 0
+			}
+		case 3:
+			// Any instruction > txscript.OP_16 is not push data. Note: txscript.OP_PUSHDATAX < txscript.OP_16
+			if tokenizer.Opcode() <= txscript.OP_16 {
+				data := tokenizer.Data()
+				return data, controlBlock.InternalKey, true
+			}
+			state = 0
+		}
+	}
+	return []byte{}, nil, false
+}
+
+func (p *Processor) parseTransactions(ctx context.Context, transactions []*types.Transaction) ([]NodeSaleEvent, error) {
+	var events []NodeSaleEvent
+	for _, t := range transactions {
+		for _, txIn := range t.TxIn {
+			data, txPubkey, isNodeSale := extractNodeSaleData(txIn.Witness)
+			if !isNodeSale {
+				continue
+			}
+
+			event := &protobuf.NodeSaleEvent{}
+			err := proto.Unmarshal(data, event)
+			if err != nil {
+				logger.WarnContext(ctx, "Invalid Protobuf",
+					slogx.String("block_hash", t.BlockHash.String()),
+					slogx.Int("txIndex", int(t.Index)))
+				continue
+			}
+			eventJson, err := protojson.Marshal(event)
+			if err != nil {
+				return []NodeSaleEvent{}, errors.Wrap(err, "Failed to parse protobuf to json")
+			}
+
+			prevTx, _, err := p.BtcClient.GetRawTransactionAndHeightByTxHash(ctx, txIn.PreviousOutTxHash)
+			if err != nil {
+				return nil, errors.Wrap(err, "Failed to get Previous transaction data")
+			}
+
+			if txIn.PreviousOutIndex >= uint32(len(prevTx.TxOut)) {
+				return nil, errors.Wrap(err, "Invalid previous transaction from bitcoin")
+			}
+
+			events = append(events, NodeSaleEvent{
+				Transaction:  t,
+				EventMessage: event,
+				EventJson:    eventJson,
+				RawData:      data,
+				TxPubkey:     txPubkey,
+				InputValue:   uint64(prevTx.TxOut[txIn.PreviousOutIndex].Value),
+			})
+		}
+	}
+	return events, nil
+}
+
+// Process implements indexer.Processor.
+func (p *Processor) Process(ctx context.Context, inputs []*types.Block) error {
+	for _, block := range inputs {
+		logger.InfoContext(ctx, "NodeSale processing a block",
+			slogx.Int64("block", block.Header.Height),
+			slogx.Stringer("hash", block.Header.Hash))
+		// parse all event from each transaction including reading tx wallet
+		events, err := p.parseTransactions(ctx, block.Transactions)
+		if err != nil {
+			return errors.Wrap(err, "Invalid data from bitcoin client")
+		}
+		// open transaction
+		qtx, err := p.NodeSaleDg.BeginNodeSaleTx(ctx)
+		if err != nil {
+			return errors.Wrap(err, "Failed to create transaction")
+		}
+		defer func() {
+			err = qtx.Rollback(ctx)
+			if err != nil {
+				logger.PanicContext(ctx, "Failed to rollback db")
+			}
+		}()
+
+		// write block
+		err = qtx.CreateBlock(ctx, entity.Block{
+			BlockHeight: block.Header.Height,
+			BlockHash:   block.Header.Hash.String(),
+			Module:      p.Name(),
+		})
+		if err != nil {
+			return errors.Wrapf(err, "Failed to add block %d", block.Header.Height)
+		}
+		// for each events
+		for _, event := range events {
+			logger.InfoContext(ctx, "NodeSale processing event",
+				slogx.Uint32("txIndex", event.Transaction.Index),
+				slogx.Int64("blockHeight", block.Header.Height),
+				slogx.Stringer("blockhash", block.Header.Hash),
+			)
+			eventMessage := event.EventMessage
+			switch eventMessage.Action {
+			case protobuf.Action_ACTION_DEPLOY:
+				err = p.ProcessDeploy(ctx, qtx, block, event)
+				if err != nil {
+					return errors.Wrapf(err, "Failed to deploy at block %d", block.Header.Height)
+				}
+			case protobuf.Action_ACTION_DELEGATE:
+				err = p.ProcessDelegate(ctx, qtx, block, event)
+				if err != nil {
+					return errors.Wrapf(err, "Failed to delegate at block %d", block.Header.Height)
+				}
+			case protobuf.Action_ACTION_PURCHASE:
+				err = p.ProcessPurchase(ctx, qtx, block, event)
+				if err != nil {
+					return errors.Wrapf(err, "Failed to purchase at block %d", block.Header.Height)
+				}
+			default:
+				logger.DebugContext(ctx, "Invalid event ACTION", slogx.Stringer("txHash", (event.Transaction.TxHash)))
+			}
+		}
+		// close transaction
+		err = qtx.Commit(ctx)
+		if err != nil {
+			return errors.Wrap(err, "Failed to commit transaction")
+		}
+		logger.InfoContext(ctx, "NodeSale finished processing block",
+			slogx.Int64("block", block.Header.Height),
+			slogx.Stringer("hash", block.Header.Hash))
+	}
+	return nil
+}
+
+// RevertData implements indexer.Processor.
+func (p *Processor) RevertData(ctx context.Context, from int64) error {
+	qtx, err := p.NodeSaleDg.BeginNodeSaleTx(ctx)
+	if err != nil {
+		return errors.Wrap(err, "Failed to create transaction")
+	}
+	defer func() { err = qtx.Rollback(ctx) }()
+	_, err = qtx.RemoveBlockFrom(ctx, from)
+	if err != nil {
+		return errors.Wrap(err, "Failed to remove blocks.")
+	}
+
+	affected, err := qtx.RemoveEventsFromBlock(ctx, from)
+	if err != nil {
+		return errors.Wrap(err, "Failed to remove events.")
+	}
+	_, err = qtx.ClearDelegate(ctx)
+	if err != nil {
+		return errors.Wrap(err, "Failed to clear delegate from nodes")
+	}
+	err = qtx.Commit(ctx)
+	if err != nil {
+		return errors.Wrap(err, "Failed to commit transaction")
+	}
+	logger.InfoContext(ctx, "Events removed",
+		slogx.Int64("Total removed", affected))
+	return nil
+}
+
+// VerifyStates implements indexer.Processor.
+func (p *Processor) VerifyStates(ctx context.Context) error {
+	panic("unimplemented")
+}
+
+var _ indexer.Processor[*types.Block] = (*Processor)(nil)

modules/nodesale/protobuf/nodesale.pb.go

@@ -0,0 +1,806 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.34.1
+// 	protoc        v5.26.1
+// source: modules/nodesale/protobuf/nodesale.proto
+
+// protoc modules/nodesale/protobuf/nodesale.proto --go_out=. --go_opt=module=github.com/gaze-network/indexer-network
+
+package protobuf
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type Action int32
+
+const (
+	Action_ACTION_DEPLOY   Action = 0
+	Action_ACTION_PURCHASE Action = 1
+	Action_ACTION_DELEGATE Action = 2
+)
+
+// Enum value maps for Action.
+var (
+	Action_name = map[int32]string{
+		0: "ACTION_DEPLOY",
+		1: "ACTION_PURCHASE",
+		2: "ACTION_DELEGATE",
+	}
+	Action_value = map[string]int32{
+		"ACTION_DEPLOY":   0,
+		"ACTION_PURCHASE": 1,
+		"ACTION_DELEGATE": 2,
+	}
+)
+
+func (x Action) Enum() *Action {
+	p := new(Action)
+	*p = x
+	return p
+}
+
+func (x Action) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Action) Descriptor() protoreflect.EnumDescriptor {
+	return file_modules_nodesale_protobuf_nodesale_proto_enumTypes[0].Descriptor()
+}
+
+func (Action) Type() protoreflect.EnumType {
+	return &file_modules_nodesale_protobuf_nodesale_proto_enumTypes[0]
+}
+
+func (x Action) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Action.Descriptor instead.
+func (Action) EnumDescriptor() ([]byte, []int) {
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP(), []int{0}
+}
+
+type NodeSaleEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Action   Action          `protobuf:"varint,1,opt,name=action,proto3,enum=nodesale.Action" json:"action,omitempty"`
+	Deploy   *ActionDeploy   `protobuf:"bytes,2,opt,name=deploy,proto3,oneof" json:"deploy,omitempty"`
+	Purchase *ActionPurchase `protobuf:"bytes,3,opt,name=purchase,proto3,oneof" json:"purchase,omitempty"`
+	Delegate *ActionDelegate `protobuf:"bytes,4,opt,name=delegate,proto3,oneof" json:"delegate,omitempty"`
+}
+
+func (x *NodeSaleEvent) Reset() {
+	*x = NodeSaleEvent{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *NodeSaleEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*NodeSaleEvent) ProtoMessage() {}
+
+func (x *NodeSaleEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use NodeSaleEvent.ProtoReflect.Descriptor instead.
+func (*NodeSaleEvent) Descriptor() ([]byte, []int) {
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *NodeSaleEvent) GetAction() Action {
+	if x != nil {
+		return x.Action
+	}
+	return Action_ACTION_DEPLOY
+}
+
+func (x *NodeSaleEvent) GetDeploy() *ActionDeploy {
+	if x != nil {
+		return x.Deploy
+	}
+	return nil
+}
+
+func (x *NodeSaleEvent) GetPurchase() *ActionPurchase {
+	if x != nil {
+		return x.Purchase
+	}
+	return nil
+}
+
+func (x *NodeSaleEvent) GetDelegate() *ActionDelegate {
+	if x != nil {
+		return x.Delegate
+	}
+	return nil
+}
+
+type ActionDeploy struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name                  string  `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	StartsAt              uint32  `protobuf:"varint,2,opt,name=startsAt,proto3" json:"startsAt,omitempty"`
+	EndsAt                uint32  `protobuf:"varint,3,opt,name=endsAt,proto3" json:"endsAt,omitempty"`
+	Tiers                 []*Tier `protobuf:"bytes,4,rep,name=tiers,proto3" json:"tiers,omitempty"`
+	SellerPublicKey       string  `protobuf:"bytes,5,opt,name=sellerPublicKey,proto3" json:"sellerPublicKey,omitempty"`
+	MaxPerAddress         uint32  `protobuf:"varint,6,opt,name=maxPerAddress,proto3" json:"maxPerAddress,omitempty"`
+	MaxDiscountPercentage uint32  `protobuf:"varint,7,opt,name=maxDiscountPercentage,proto3" json:"maxDiscountPercentage,omitempty"`
+	SellerWallet          string  `protobuf:"bytes,8,opt,name=sellerWallet,proto3" json:"sellerWallet,omitempty"`
+}
+
+func (x *ActionDeploy) Reset() {
+	*x = ActionDeploy{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ActionDeploy) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ActionDeploy) ProtoMessage() {}
+
+func (x *ActionDeploy) ProtoReflect() protoreflect.Message {
+	mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ActionDeploy.ProtoReflect.Descriptor instead.
+func (*ActionDeploy) Descriptor() ([]byte, []int) {
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *ActionDeploy) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *ActionDeploy) GetStartsAt() uint32 {
+	if x != nil {
+		return x.StartsAt
+	}
+	return 0
+}
+
+func (x *ActionDeploy) GetEndsAt() uint32 {
+	if x != nil {
+		return x.EndsAt
+	}
+	return 0
+}
+
+func (x *ActionDeploy) GetTiers() []*Tier {
+	if x != nil {
+		return x.Tiers
+	}
+	return nil
+}
+
+func (x *ActionDeploy) GetSellerPublicKey() string {
+	if x != nil {
+		return x.SellerPublicKey
+	}
+	return ""
+}
+
+func (x *ActionDeploy) GetMaxPerAddress() uint32 {
+	if x != nil {
+		return x.MaxPerAddress
+	}
+	return 0
+}
+
+func (x *ActionDeploy) GetMaxDiscountPercentage() uint32 {
+	if x != nil {
+		return x.MaxDiscountPercentage
+	}
+	return 0
+}
+
+func (x *ActionDeploy) GetSellerWallet() string {
+	if x != nil {
+		return x.SellerWallet
+	}
+	return ""
+}
+
+type Tier struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PriceSat      uint32 `protobuf:"varint,1,opt,name=priceSat,proto3" json:"priceSat,omitempty"`
+	Limit         uint32 `protobuf:"varint,2,opt,name=limit,proto3" json:"limit,omitempty"`
+	MaxPerAddress uint32 `protobuf:"varint,3,opt,name=maxPerAddress,proto3" json:"maxPerAddress,omitempty"`
+}
+
+func (x *Tier) Reset() {
+	*x = Tier{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Tier) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Tier) ProtoMessage() {}
+
+func (x *Tier) ProtoReflect() protoreflect.Message {
+	mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Tier.ProtoReflect.Descriptor instead.
+func (*Tier) Descriptor() ([]byte, []int) {
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *Tier) GetPriceSat() uint32 {
+	if x != nil {
+		return x.PriceSat
+	}
+	return 0
+}
+
+func (x *Tier) GetLimit() uint32 {
+	if x != nil {
+		return x.Limit
+	}
+	return 0
+}
+
+func (x *Tier) GetMaxPerAddress() uint32 {
+	if x != nil {
+		return x.MaxPerAddress
+	}
+	return 0
+}
+
+type ActionPurchase struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Payload         *PurchasePayload `protobuf:"bytes,1,opt,name=payload,proto3" json:"payload,omitempty"`
+	SellerSignature string           `protobuf:"bytes,2,opt,name=sellerSignature,proto3" json:"sellerSignature,omitempty"`
+}
+
+func (x *ActionPurchase) Reset() {
+	*x = ActionPurchase{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ActionPurchase) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ActionPurchase) ProtoMessage() {}
+
+func (x *ActionPurchase) ProtoReflect() protoreflect.Message {
+	mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ActionPurchase.ProtoReflect.Descriptor instead.
+func (*ActionPurchase) Descriptor() ([]byte, []int) {
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *ActionPurchase) GetPayload() *PurchasePayload {
+	if x != nil {
+		return x.Payload
+	}
+	return nil
+}
+
+func (x *ActionPurchase) GetSellerSignature() string {
+	if x != nil {
+		return x.SellerSignature
+	}
+	return ""
+}
+
+type PurchasePayload struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	DeployID       *ActionID `protobuf:"bytes,1,opt,name=deployID,proto3" json:"deployID,omitempty"`
+	BuyerPublicKey string    `protobuf:"bytes,2,opt,name=buyerPublicKey,proto3" json:"buyerPublicKey,omitempty"`
+	NodeIDs        []uint32  `protobuf:"varint,3,rep,packed,name=nodeIDs,proto3" json:"nodeIDs,omitempty"`
+	TotalAmountSat int64     `protobuf:"varint,4,opt,name=totalAmountSat,proto3" json:"totalAmountSat,omitempty"`
+	TimeOutBlock   uint64    `protobuf:"varint,5,opt,name=timeOutBlock,proto3" json:"timeOutBlock,omitempty"`
+}
+
+func (x *PurchasePayload) Reset() {
+	*x = PurchasePayload{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PurchasePayload) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PurchasePayload) ProtoMessage() {}
+
+func (x *PurchasePayload) ProtoReflect() protoreflect.Message {
+	mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PurchasePayload.ProtoReflect.Descriptor instead.
+func (*PurchasePayload) Descriptor() ([]byte, []int) {
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *PurchasePayload) GetDeployID() *ActionID {
+	if x != nil {
+		return x.DeployID
+	}
+	return nil
+}
+
+func (x *PurchasePayload) GetBuyerPublicKey() string {
+	if x != nil {
+		return x.BuyerPublicKey
+	}
+	return ""
+}
+
+func (x *PurchasePayload) GetNodeIDs() []uint32 {
+	if x != nil {
+		return x.NodeIDs
+	}
+	return nil
+}
+
+func (x *PurchasePayload) GetTotalAmountSat() int64 {
+	if x != nil {
+		return x.TotalAmountSat
+	}
+	return 0
+}
+
+func (x *PurchasePayload) GetTimeOutBlock() uint64 {
+	if x != nil {
+		return x.TimeOutBlock
+	}
+	return 0
+}
+
+type ActionID struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Block   uint64 `protobuf:"varint,1,opt,name=block,proto3" json:"block,omitempty"`
+	TxIndex uint32 `protobuf:"varint,2,opt,name=txIndex,proto3" json:"txIndex,omitempty"`
+}
+
+func (x *ActionID) Reset() {
+	*x = ActionID{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ActionID) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ActionID) ProtoMessage() {}
+
+func (x *ActionID) ProtoReflect() protoreflect.Message {
+	mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ActionID.ProtoReflect.Descriptor instead.
+func (*ActionID) Descriptor() ([]byte, []int) {
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *ActionID) GetBlock() uint64 {
+	if x != nil {
+		return x.Block
+	}
+	return 0
+}
+
+func (x *ActionID) GetTxIndex() uint32 {
+	if x != nil {
+		return x.TxIndex
+	}
+	return 0
+}
+
+type ActionDelegate struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	DelegateePublicKey string    `protobuf:"bytes,1,opt,name=delegateePublicKey,proto3" json:"delegateePublicKey,omitempty"`
+	NodeIDs            []uint32  `protobuf:"varint,2,rep,packed,name=nodeIDs,proto3" json:"nodeIDs,omitempty"`
+	DeployID           *ActionID `protobuf:"bytes,3,opt,name=deployID,proto3" json:"deployID,omitempty"`
+}
+
+func (x *ActionDelegate) Reset() {
+	*x = ActionDelegate{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ActionDelegate) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ActionDelegate) ProtoMessage() {}
+
+func (x *ActionDelegate) ProtoReflect() protoreflect.Message {
+	mi := &file_modules_nodesale_protobuf_nodesale_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ActionDelegate.ProtoReflect.Descriptor instead.
+func (*ActionDelegate) Descriptor() ([]byte, []int) {
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *ActionDelegate) GetDelegateePublicKey() string {
+	if x != nil {
+		return x.DelegateePublicKey
+	}
+	return ""
+}
+
+func (x *ActionDelegate) GetNodeIDs() []uint32 {
+	if x != nil {
+		return x.NodeIDs
+	}
+	return nil
+}
+
+func (x *ActionDelegate) GetDeployID() *ActionID {
+	if x != nil {
+		return x.DeployID
+	}
+	return nil
+}
+
+var File_modules_nodesale_protobuf_nodesale_proto protoreflect.FileDescriptor
+
+var file_modules_nodesale_protobuf_nodesale_proto_rawDesc = []byte{
+	0x0a, 0x28, 0x6d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x73, 0x2f, 0x6e, 0x6f, 0x64, 0x65, 0x73, 0x61,
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+	0x66, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_modules_nodesale_protobuf_nodesale_proto_rawDescOnce sync.Once
+	file_modules_nodesale_protobuf_nodesale_proto_rawDescData = file_modules_nodesale_protobuf_nodesale_proto_rawDesc
+)
+
+func file_modules_nodesale_protobuf_nodesale_proto_rawDescGZIP() []byte {
+	file_modules_nodesale_protobuf_nodesale_proto_rawDescOnce.Do(func() {
+		file_modules_nodesale_protobuf_nodesale_proto_rawDescData = protoimpl.X.CompressGZIP(file_modules_nodesale_protobuf_nodesale_proto_rawDescData)
+	})
+	return file_modules_nodesale_protobuf_nodesale_proto_rawDescData
+}
+
+var file_modules_nodesale_protobuf_nodesale_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_modules_nodesale_protobuf_nodesale_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
+var file_modules_nodesale_protobuf_nodesale_proto_goTypes = []interface{}{
+	(Action)(0),             // 0: nodesale.Action
+	(*NodeSaleEvent)(nil),   // 1: nodesale.NodeSaleEvent
+	(*ActionDeploy)(nil),    // 2: nodesale.ActionDeploy
+	(*Tier)(nil),            // 3: nodesale.Tier
+	(*ActionPurchase)(nil),  // 4: nodesale.ActionPurchase
+	(*PurchasePayload)(nil), // 5: nodesale.PurchasePayload
+	(*ActionID)(nil),        // 6: nodesale.ActionID
+	(*ActionDelegate)(nil),  // 7: nodesale.ActionDelegate
+}
+var file_modules_nodesale_protobuf_nodesale_proto_depIdxs = []int32{
+	0, // 0: nodesale.NodeSaleEvent.action:type_name -> nodesale.Action
+	2, // 1: nodesale.NodeSaleEvent.deploy:type_name -> nodesale.ActionDeploy
+	4, // 2: nodesale.NodeSaleEvent.purchase:type_name -> nodesale.ActionPurchase
+	7, // 3: nodesale.NodeSaleEvent.delegate:type_name -> nodesale.ActionDelegate
+	3, // 4: nodesale.ActionDeploy.tiers:type_name -> nodesale.Tier
+	5, // 5: nodesale.ActionPurchase.payload:type_name -> nodesale.PurchasePayload
+	6, // 6: nodesale.PurchasePayload.deployID:type_name -> nodesale.ActionID
+	6, // 7: nodesale.ActionDelegate.deployID:type_name -> nodesale.ActionID
+	8, // [8:8] is the sub-list for method output_type
+	8, // [8:8] is the sub-list for method input_type
+	8, // [8:8] is the sub-list for extension type_name
+	8, // [8:8] is the sub-list for extension extendee
+	0, // [0:8] is the sub-list for field type_name
+}
+
+func init() { file_modules_nodesale_protobuf_nodesale_proto_init() }
+func file_modules_nodesale_protobuf_nodesale_proto_init() {
+	if File_modules_nodesale_protobuf_nodesale_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_modules_nodesale_protobuf_nodesale_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*NodeSaleEvent); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_modules_nodesale_protobuf_nodesale_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ActionDeploy); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_modules_nodesale_protobuf_nodesale_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Tier); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_modules_nodesale_protobuf_nodesale_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ActionPurchase); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_modules_nodesale_protobuf_nodesale_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PurchasePayload); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_modules_nodesale_protobuf_nodesale_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ActionID); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_modules_nodesale_protobuf_nodesale_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ActionDelegate); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_modules_nodesale_protobuf_nodesale_proto_msgTypes[0].OneofWrappers = []interface{}{}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_modules_nodesale_protobuf_nodesale_proto_rawDesc,
+			NumEnums:      1,
+			NumMessages:   7,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_modules_nodesale_protobuf_nodesale_proto_goTypes,
+		DependencyIndexes: file_modules_nodesale_protobuf_nodesale_proto_depIdxs,
+		EnumInfos:         file_modules_nodesale_protobuf_nodesale_proto_enumTypes,
+		MessageInfos:      file_modules_nodesale_protobuf_nodesale_proto_msgTypes,
+	}.Build()
+	File_modules_nodesale_protobuf_nodesale_proto = out.File
+	file_modules_nodesale_protobuf_nodesale_proto_rawDesc = nil
+	file_modules_nodesale_protobuf_nodesale_proto_goTypes = nil
+	file_modules_nodesale_protobuf_nodesale_proto_depIdxs = nil
+}

modules/nodesale/protobuf/nodesale.proto

@@ -0,0 +1,60 @@
+syntax = "proto3";
+
+// protoc modules/nodesale/protobuf/nodesale.proto --go_out=. --go_opt=module=github.com/gaze-network/indexer-network
+
+package nodesale;
+option go_package = "github.com/gaze-network/indexer-network/modules/nodesale/protobuf";
+
+enum Action {
+  ACTION_DEPLOY = 0;
+  ACTION_PURCHASE = 1;
+  ACTION_DELEGATE = 2;
+}
+
+message NodeSaleEvent {
+	Action action = 1;
+	optional ActionDeploy deploy = 2;
+	optional ActionPurchase purchase = 3;
+	optional ActionDelegate delegate = 4;
+}
+
+message ActionDeploy {
+	string name = 1;
+	uint32 startsAt = 2;
+	uint32 endsAt = 3;
+	repeated Tier tiers = 4;
+	string sellerPublicKey = 5;
+	uint32 maxPerAddress = 6;
+	uint32 maxDiscountPercentage = 7;
+	string sellerWallet = 8;
+}
+
+message Tier {
+	uint32 priceSat = 1;
+	uint32 limit = 2;
+	uint32 maxPerAddress = 3;
+}
+
+message ActionPurchase {
+	PurchasePayload payload = 1;
+	string sellerSignature = 2;
+}
+
+message PurchasePayload {
+	ActionID deployID = 1;
+	string buyerPublicKey = 2;
+	repeated uint32 nodeIDs = 3;
+	int64 totalAmountSat = 4;
+	uint64 timeOutBlock = 5;
+}
+
+message ActionID {
+	uint64 block = 1;
+	uint32 txIndex = 2;
+}
+
+message ActionDelegate {
+	string delegateePublicKey = 1;
+	repeated uint32 nodeIDs = 2;
+	ActionID deployID = 3;
+}

modules/nodesale/pubkeyaddr.go

@@ -0,0 +1,12 @@
+package nodesale
+
+import (
+	"github.com/btcsuite/btcd/btcec/v2"
+	"github.com/btcsuite/btcd/btcutil"
+)
+
+func (p *Processor) PubkeyToPkHashAddress(pubKey *btcec.PublicKey) btcutil.Address {
+	addrPubKey, _ := btcutil.NewAddressPubKey(pubKey.SerializeCompressed(), p.Network.ChainParams())
+	addrPubKeyHash := addrPubKey.AddressPubKeyHash()
+	return addrPubKeyHash
+}

modules/nodesale/purchase.go

@@ -0,0 +1,87 @@
+package nodesale
+
+import (
+	"context"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/core/types"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	purchasevalidator "github.com/gaze-network/indexer-network/modules/nodesale/internal/validator/purchase"
+)
+
+func (p *Processor) ProcessPurchase(ctx context.Context, qtx datagateway.NodeSaleDataGatewayWithTx, block *types.Block, event NodeSaleEvent) error {
+	purchase := event.EventMessage.Purchase
+	payload := purchase.Payload
+
+	validator := purchasevalidator.New()
+
+	validator.EqualXonlyPublicKey(payload.BuyerPublicKey, event.TxPubkey)
+
+	_, deploy, err := validator.NodeSaleExists(ctx, qtx, payload)
+	if err != nil {
+		return errors.Wrap(err, "cannot query. Something wrong.")
+	}
+
+	validator.ValidTimestamp(deploy, block.Header.Timestamp)
+	validator.WithinTimeoutBlock(payload.TimeOutBlock, uint64(event.Transaction.BlockHeight))
+
+	validator.VerifySignature(purchase, deploy)
+
+	_, tierMap := validator.ValidTiers(payload, deploy)
+
+	tiers := tierMap.Tiers
+	buyingTiersCount := tierMap.BuyingTiersCount
+	nodeIdToTier := tierMap.NodeIdToTier
+
+	_, err = validator.ValidUnpurchasedNodes(ctx, qtx, payload)
+	if err != nil {
+		return errors.Wrap(err, "cannot query. Something wrong.")
+	}
+
+	_, meta := validator.ValidPaidAmount(payload, deploy, event.InputValue, tiers, buyingTiersCount, p.Network.ChainParams())
+
+	_, err = validator.WithinLimit(ctx, qtx, payload, deploy, tiers, buyingTiersCount)
+	if err != nil {
+		return errors.Wrap(err, "cannot query. Something wrong.")
+	}
+
+	err = qtx.CreateEvent(ctx, entity.NodeSaleEvent{
+		TxHash:         event.Transaction.TxHash.String(),
+		TxIndex:        int32(event.Transaction.Index),
+		Action:         int32(event.EventMessage.Action),
+		RawMessage:     event.RawData,
+		ParsedMessage:  event.EventJson,
+		BlockTimestamp: block.Header.Timestamp,
+		BlockHash:      event.Transaction.BlockHash.String(),
+		BlockHeight:    event.Transaction.BlockHeight,
+		Valid:          validator.Valid,
+		WalletAddress:  p.PubkeyToPkHashAddress(event.TxPubkey).EncodeAddress(),
+		Metadata:       meta,
+		Reason:         validator.Reason,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Failed to insert event")
+	}
+
+	if validator.Valid {
+		// add to node
+		for _, nodeId := range payload.NodeIDs {
+			err := qtx.CreateNode(ctx, entity.Node{
+				SaleBlock:      deploy.BlockHeight,
+				SaleTxIndex:    deploy.TxIndex,
+				NodeID:         nodeId,
+				TierIndex:      nodeIdToTier[nodeId],
+				DelegatedTo:    "",
+				OwnerPublicKey: payload.BuyerPublicKey,
+				PurchaseTxHash: event.Transaction.TxHash.String(),
+				DelegateTxHash: "",
+			})
+			if err != nil {
+				return errors.Wrap(err, "Failed to insert node")
+			}
+		}
+	}
+
+	return nil
+}

modules/nodesale/purchase_test.go

@@ -0,0 +1,902 @@
+package nodesale
+
+import (
+	"context"
+	"encoding/hex"
+	"testing"
+	"time"
+
+	"github.com/btcsuite/btcd/btcec/v2"
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/decred/dcrd/dcrec/secp256k1/v4/ecdsa"
+	"github.com/gaze-network/indexer-network/common"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway/mocks"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/validator"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/validator/purchase"
+	"github.com/gaze-network/indexer-network/modules/nodesale/protobuf"
+	"github.com/samber/lo"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"google.golang.org/protobuf/encoding/protojson"
+	"google.golang.org/protobuf/proto"
+)
+
+func TestInvalidPurchase(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	buyerPrivateKey, err := btcec.NewPrivateKey()
+	require.NoError(t, err)
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload: &protobuf.PurchasePayload{
+				DeployID: &protobuf.ActionID{
+					Block:   111,
+					TxIndex: 1,
+				},
+				NodeIDs:        []uint32{1, 2},
+				BuyerPublicKey: buyerPubkeyHex,
+				TotalAmountSat: 500,
+				TimeOutBlock:   uint64(testBlockHeight) + 5,
+			},
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "030303030303", "030303030303", 0, 0, message)
+
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, mock.Anything).Return(nil, nil)
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false
+	})).Return(nil)
+
+	err = p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+
+	mockDgTx.AssertNotCalled(t, "CreateNode")
+}
+
+func TestInvalidBuyerKey(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	strangerPrivateKey, _ := btcec.NewPrivateKey()
+	strangerPrivateKeyHex := hex.EncodeToString(strangerPrivateKey.PubKey().SerializeCompressed())
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload: &protobuf.PurchasePayload{
+				DeployID: &protobuf.ActionID{
+					Block:   100,
+					TxIndex: 1,
+				},
+				NodeIDs:        []uint32{1, 2},
+				BuyerPublicKey: strangerPrivateKeyHex,
+				TotalAmountSat: 200,
+				TimeOutBlock:   uint64(testBlockHeight) + 5,
+			},
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "0707070707", "0707070707", 0, 0, message)
+	block.Header.Timestamp = time.Now().UTC()
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false && event.Reason == validator.INVALID_PUBKEY
+	})).Return(nil)
+
+	err := p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+
+	mockDgTx.AssertNotCalled(t, "CreateNode")
+}
+
+func TestInvalidTimestamp(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	sellerPrivateKey, err := btcec.NewPrivateKey()
+	require.NoError(t, err)
+
+	sellerPubkeyHex := hex.EncodeToString(sellerPrivateKey.PubKey().SerializeCompressed())
+	sellerWallet := p.PubkeyToPkHashAddress(sellerPrivateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	tiers := lo.Map([]*protobuf.Tier{
+		{
+			PriceSat:      100,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+		{
+			PriceSat:      200,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+	}, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, datagateway.GetNodeSaleParams{
+		BlockHeight: 100,
+		TxIndex:     1,
+	}).Return([]entity.NodeSale{
+		{
+			BlockHeight:           100,
+			TxIndex:               1,
+			Name:                  t.Name(),
+			StartsAt:              startAt,
+			EndsAt:                endAt,
+			Tiers:                 tiers,
+			SellerPublicKey:       sellerPubkeyHex,
+			MaxPerAddress:         100,
+			DeployTxHash:          "040404040404",
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}, nil)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload: &protobuf.PurchasePayload{
+				DeployID: &protobuf.ActionID{
+					Block:   100,
+					TxIndex: 1,
+				},
+				NodeIDs:        []uint32{1, 2},
+				BuyerPublicKey: buyerPubkeyHex,
+				TotalAmountSat: 200,
+				TimeOutBlock:   uint64(testBlockHeight) + 5,
+			},
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "050505050505", "050505050505", 0, 0, message)
+
+	block.Header.Timestamp = time.Now().UTC().Add(time.Hour * 2)
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false && event.Reason == purchase.PURCHASE_TIMEOUT
+	})).Return(nil)
+
+	err = p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+
+	mockDgTx.AssertNotCalled(t, "CreateNode")
+}
+
+func TestTimeOut(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	sellerPrivateKey, _ := btcec.NewPrivateKey()
+	sellerPubkeyHex := hex.EncodeToString(sellerPrivateKey.PubKey().SerializeCompressed())
+	sellerWallet := p.PubkeyToPkHashAddress(sellerPrivateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	tiers := lo.Map([]*protobuf.Tier{
+		{
+			PriceSat:      100,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+		{
+			PriceSat:      200,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+	}, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, datagateway.GetNodeSaleParams{
+		BlockHeight: 100,
+		TxIndex:     1,
+	}).Return([]entity.NodeSale{
+		{
+			BlockHeight:           100,
+			TxIndex:               1,
+			Name:                  t.Name(),
+			StartsAt:              startAt,
+			EndsAt:                endAt,
+			Tiers:                 tiers,
+			SellerPublicKey:       sellerPubkeyHex,
+			MaxPerAddress:         100,
+			DeployTxHash:          "040404040404",
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}, nil)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload: &protobuf.PurchasePayload{
+				DeployID: &protobuf.ActionID{
+					Block:   100,
+					TxIndex: 1,
+				},
+				NodeIDs:        []uint32{1, 2},
+				BuyerPublicKey: buyerPubkeyHex,
+				TimeOutBlock:   uint64(testBlockHeight) - 5,
+				TotalAmountSat: 200,
+			},
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "090909090909", "090909090909", 0, 0, message)
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false && event.Reason == purchase.BLOCK_HEIGHT_TIMEOUT
+	})).Return(nil)
+
+	err := p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+
+	mockDgTx.AssertNotCalled(t, "CreateNode")
+}
+
+func TestSignatureInvalid(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	sellerPrivateKey, _ := btcec.NewPrivateKey()
+	sellerPubkeyHex := hex.EncodeToString(sellerPrivateKey.PubKey().SerializeCompressed())
+	sellerWallet := p.PubkeyToPkHashAddress(sellerPrivateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	tiers := lo.Map([]*protobuf.Tier{
+		{
+			PriceSat:      100,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+		{
+			PriceSat:      200,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+	}, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, datagateway.GetNodeSaleParams{
+		BlockHeight: 100,
+		TxIndex:     1,
+	}).Return([]entity.NodeSale{
+		{
+			BlockHeight:           100,
+			TxIndex:               1,
+			Name:                  t.Name(),
+			StartsAt:              startAt,
+			EndsAt:                endAt,
+			Tiers:                 tiers,
+			SellerPublicKey:       sellerPubkeyHex,
+			MaxPerAddress:         100,
+			DeployTxHash:          "040404040404",
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}, nil)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	payload := &protobuf.PurchasePayload{
+		DeployID: &protobuf.ActionID{
+			Block:   100,
+			TxIndex: 1,
+		},
+		NodeIDs:        []uint32{1, 2},
+		BuyerPublicKey: buyerPubkeyHex,
+		TimeOutBlock:   testBlockHeight + 5,
+	}
+
+	payloadBytes, _ := proto.Marshal(payload)
+	payloadHash := chainhash.DoubleHashB(payloadBytes)
+	signature := ecdsa.Sign(buyerPrivateKey, payloadHash[:])
+	signatureHex := hex.EncodeToString(signature.Serialize())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload:         payload,
+			SellerSignature: signatureHex,
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "0B0B0B", "0B0B0B", 0, 0, message)
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false && event.Reason == purchase.INVALID_SIGNATURE
+	})).Return(nil)
+
+	err := p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+
+	mockDgTx.AssertNotCalled(t, "CreateNode")
+}
+
+func TestValidPurchase(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	sellerPrivateKey, _ := btcec.NewPrivateKey()
+	sellerPubkeyHex := hex.EncodeToString(sellerPrivateKey.PubKey().SerializeCompressed())
+	sellerWallet := p.PubkeyToPkHashAddress(sellerPrivateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	tiers := lo.Map([]*protobuf.Tier{
+		{
+			PriceSat:      100,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+		{
+			PriceSat:      200,
+			Limit:         4,
+			MaxPerAddress: 2,
+		},
+		{
+			PriceSat:      400,
+			Limit:         3,
+			MaxPerAddress: 100,
+		},
+	}, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, datagateway.GetNodeSaleParams{
+		BlockHeight: 100,
+		TxIndex:     1,
+	}).Return([]entity.NodeSale{
+		{
+			BlockHeight:           100,
+			TxIndex:               1,
+			Name:                  t.Name(),
+			StartsAt:              startAt,
+			EndsAt:                endAt,
+			Tiers:                 tiers,
+			SellerPublicKey:       sellerPubkeyHex,
+			MaxPerAddress:         100,
+			DeployTxHash:          "040404040404",
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}, nil)
+
+	mockDgTx.EXPECT().GetNodesByIds(mock.Anything, mock.Anything).Return(nil, nil)
+
+	mockDgTx.EXPECT().GetNodesByOwner(mock.Anything, mock.Anything).Return(nil, nil)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	payload := &protobuf.PurchasePayload{
+		DeployID: &protobuf.ActionID{
+			Block:   100,
+			TxIndex: 1,
+		},
+		BuyerPublicKey: buyerPubkeyHex,
+		TimeOutBlock:   uint64(testBlockHeight) + 5,
+		NodeIDs:        []uint32{0, 5, 6, 9},
+		TotalAmountSat: 500,
+	}
+
+	payloadBytes, _ := proto.Marshal(payload)
+	payloadHash := chainhash.DoubleHashB(payloadBytes)
+	signature := ecdsa.Sign(sellerPrivateKey, payloadHash[:])
+	signatureHex := hex.EncodeToString(signature.Serialize())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload:         payload,
+			SellerSignature: signatureHex,
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "0D0D0D0D", "0D0D0D0D", 0, 0, message)
+	event.InputValue = 500
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == true && event.Reason == ""
+	})).Return(nil)
+
+	mockDgTx.EXPECT().CreateNode(mock.Anything, mock.MatchedBy(func(node entity.Node) bool {
+		return node.NodeID == 0 &&
+			node.TierIndex == 0 &&
+			node.OwnerPublicKey == buyerPubkeyHex &&
+			node.PurchaseTxHash == event.Transaction.TxHash.String() &&
+			node.SaleBlock == 100 &&
+			node.SaleTxIndex == 1
+	})).Return(nil)
+
+	mockDgTx.EXPECT().CreateNode(mock.Anything, mock.MatchedBy(func(node entity.Node) bool {
+		return node.NodeID == 5 &&
+			node.TierIndex == 1 &&
+			node.OwnerPublicKey == buyerPubkeyHex &&
+			node.PurchaseTxHash == event.Transaction.TxHash.String() &&
+			node.SaleBlock == 100 &&
+			node.SaleTxIndex == 1
+	})).Return(nil)
+
+	mockDgTx.EXPECT().CreateNode(mock.Anything, mock.MatchedBy(func(node entity.Node) bool {
+		return node.NodeID == 6 &&
+			node.TierIndex == 1 &&
+			node.OwnerPublicKey == buyerPubkeyHex &&
+			node.PurchaseTxHash == event.Transaction.TxHash.String() &&
+			node.SaleBlock == 100 &&
+			node.SaleTxIndex == 1
+	})).Return(nil)
+
+	mockDgTx.EXPECT().CreateNode(mock.Anything, mock.MatchedBy(func(node entity.Node) bool {
+		return node.NodeID == 9 &&
+			node.TierIndex == 2 &&
+			node.OwnerPublicKey == buyerPubkeyHex &&
+			node.PurchaseTxHash == event.Transaction.TxHash.String() &&
+			node.SaleBlock == 100 &&
+			node.SaleTxIndex == 1
+	})).Return(nil)
+
+	err := p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+}
+
+func TestMismatchPayment(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	sellerPrivateKey, _ := btcec.NewPrivateKey()
+	sellerPubkeyHex := hex.EncodeToString(sellerPrivateKey.PubKey().SerializeCompressed())
+	sellerWallet := p.PubkeyToPkHashAddress(sellerPrivateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	tiers := lo.Map([]*protobuf.Tier{
+		{
+			PriceSat:      100,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+		{
+			PriceSat:      200,
+			Limit:         4,
+			MaxPerAddress: 2,
+		},
+		{
+			PriceSat:      400,
+			Limit:         3,
+			MaxPerAddress: 100,
+		},
+	}, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, datagateway.GetNodeSaleParams{
+		BlockHeight: 100,
+		TxIndex:     1,
+	}).Return([]entity.NodeSale{
+		{
+			BlockHeight:           100,
+			TxIndex:               1,
+			Name:                  t.Name(),
+			StartsAt:              startAt,
+			EndsAt:                endAt,
+			Tiers:                 tiers,
+			SellerPublicKey:       sellerPubkeyHex,
+			MaxPerAddress:         100,
+			DeployTxHash:          "040404040404",
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}, nil)
+
+	mockDgTx.EXPECT().GetNodesByIds(mock.Anything, mock.Anything).Return(nil, nil)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	payload := &protobuf.PurchasePayload{
+		DeployID: &protobuf.ActionID{
+			Block:   100,
+			TxIndex: 1,
+		},
+		BuyerPublicKey: buyerPubkeyHex,
+		TimeOutBlock:   uint64(testBlockHeight) + 5,
+		NodeIDs:        []uint32{0, 5, 6, 9},
+		TotalAmountSat: 500,
+	}
+
+	payloadBytes, _ := proto.Marshal(payload)
+	payloadHash := chainhash.DoubleHashB(payloadBytes)
+	signature := ecdsa.Sign(sellerPrivateKey, payloadHash[:])
+	signatureHex := hex.EncodeToString(signature.Serialize())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload:         payload,
+			SellerSignature: signatureHex,
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "0D0D0D0D", "0D0D0D0D", 0, 0, message)
+	event.InputValue = 400
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false && event.Reason == purchase.INVALID_PAYMENT
+	})).Return(nil)
+
+	err := p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+}
+
+func TestInsufficientFund(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	sellerPrivateKey, _ := btcec.NewPrivateKey()
+	sellerPubkeyHex := hex.EncodeToString(sellerPrivateKey.PubKey().SerializeCompressed())
+	sellerWallet := p.PubkeyToPkHashAddress(sellerPrivateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	tiers := lo.Map([]*protobuf.Tier{
+		{
+			PriceSat:      100,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+		{
+			PriceSat:      200,
+			Limit:         4,
+			MaxPerAddress: 2,
+		},
+		{
+			PriceSat:      400,
+			Limit:         3,
+			MaxPerAddress: 100,
+		},
+	}, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, datagateway.GetNodeSaleParams{
+		BlockHeight: 100,
+		TxIndex:     1,
+	}).Return([]entity.NodeSale{
+		{
+			BlockHeight:           100,
+			TxIndex:               1,
+			Name:                  t.Name(),
+			StartsAt:              startAt,
+			EndsAt:                endAt,
+			Tiers:                 tiers,
+			SellerPublicKey:       sellerPubkeyHex,
+			MaxPerAddress:         100,
+			DeployTxHash:          "040404040404",
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}, nil)
+
+	mockDgTx.EXPECT().GetNodesByIds(mock.Anything, mock.Anything).Return(nil, nil)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	payload := &protobuf.PurchasePayload{
+		DeployID: &protobuf.ActionID{
+			Block:   100,
+			TxIndex: 1,
+		},
+		BuyerPublicKey: buyerPubkeyHex,
+		TimeOutBlock:   uint64(testBlockHeight) + 5,
+		NodeIDs:        []uint32{0, 5, 6, 9},
+		TotalAmountSat: 200,
+	}
+
+	payloadBytes, _ := proto.Marshal(payload)
+	payloadHash := chainhash.DoubleHashB(payloadBytes)
+	signature := ecdsa.Sign(sellerPrivateKey, payloadHash[:])
+	signatureHex := hex.EncodeToString(signature.Serialize())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload:         payload,
+			SellerSignature: signatureHex,
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "0D0D0D0D", "0D0D0D0D", 0, 0, message)
+	event.InputValue = 200
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false && event.Reason == purchase.INSUFFICIENT_FUND
+	})).Return(nil)
+
+	err := p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+}
+
+func TestBuyingLimit(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	sellerPrivateKey, _ := btcec.NewPrivateKey()
+	sellerPubkeyHex := hex.EncodeToString(sellerPrivateKey.PubKey().SerializeCompressed())
+	sellerWallet := p.PubkeyToPkHashAddress(sellerPrivateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	tiers := lo.Map([]*protobuf.Tier{
+		{
+			PriceSat:      100,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+		{
+			PriceSat:      200,
+			Limit:         4,
+			MaxPerAddress: 2,
+		},
+		{
+			PriceSat:      400,
+			Limit:         50,
+			MaxPerAddress: 100,
+		},
+	}, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, datagateway.GetNodeSaleParams{
+		BlockHeight: 100,
+		TxIndex:     1,
+	}).Return([]entity.NodeSale{
+		{
+			BlockHeight:           100,
+			TxIndex:               1,
+			Name:                  t.Name(),
+			StartsAt:              startAt,
+			EndsAt:                endAt,
+			Tiers:                 tiers,
+			SellerPublicKey:       sellerPubkeyHex,
+			MaxPerAddress:         2,
+			DeployTxHash:          "040404040404",
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}, nil)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	mockDgTx.EXPECT().GetNodesByIds(mock.Anything, mock.Anything).Return(nil, nil)
+
+	mockDgTx.EXPECT().GetNodesByOwner(mock.Anything, datagateway.GetNodesByOwnerParams{
+		SaleBlock:      100,
+		SaleTxIndex:    1,
+		OwnerPublicKey: buyerPubkeyHex,
+	}).Return([]entity.Node{
+		{
+			SaleBlock:      100,
+			SaleTxIndex:    1,
+			NodeID:         9,
+			TierIndex:      2,
+			OwnerPublicKey: buyerPubkeyHex,
+		},
+		{
+			SaleBlock:      100,
+			SaleTxIndex:    1,
+			NodeID:         10,
+			TierIndex:      2,
+			OwnerPublicKey: buyerPubkeyHex,
+		},
+	}, nil)
+
+	payload := &protobuf.PurchasePayload{
+		DeployID: &protobuf.ActionID{
+			Block:   100,
+			TxIndex: 1,
+		},
+		BuyerPublicKey: buyerPubkeyHex,
+		TimeOutBlock:   uint64(testBlockHeight) + 5,
+		NodeIDs:        []uint32{11},
+		TotalAmountSat: 600,
+	}
+
+	payloadBytes, _ := proto.Marshal(payload)
+	payloadHash := chainhash.DoubleHashB(payloadBytes)
+	signature := ecdsa.Sign(sellerPrivateKey, payloadHash[:])
+	signatureHex := hex.EncodeToString(signature.Serialize())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload:         payload,
+			SellerSignature: signatureHex,
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "22222222", "22222222", 0, 0, message)
+	event.InputValue = 600
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false && event.Reason == purchase.OVER_LIMIT_PER_ADDR
+	})).Return(nil)
+
+	err := p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+
+	mockDgTx.AssertNotCalled(t, "CreateNode")
+}
+
+func TestBuyingTierLimit(t *testing.T) {
+	ctx := context.Background()
+	mockDgTx := mocks.NewNodeSaleDataGatewayWithTx(t)
+	p := NewProcessor(mockDgTx, nil, common.NetworkMainnet, nil, 0)
+
+	sellerPrivateKey, _ := btcec.NewPrivateKey()
+	sellerPubkeyHex := hex.EncodeToString(sellerPrivateKey.PubKey().SerializeCompressed())
+	sellerWallet := p.PubkeyToPkHashAddress(sellerPrivateKey.PubKey())
+
+	startAt := time.Now().Add(time.Hour * -1)
+	endAt := time.Now().Add(time.Hour * 1)
+
+	tiers := lo.Map([]*protobuf.Tier{
+		{
+			PriceSat:      100,
+			Limit:         5,
+			MaxPerAddress: 100,
+		},
+		{
+			PriceSat:      200,
+			Limit:         4,
+			MaxPerAddress: 2,
+		},
+		{
+			PriceSat:      400,
+			Limit:         50,
+			MaxPerAddress: 3,
+		},
+	}, func(tier *protobuf.Tier, _ int) []byte {
+		tierJson, err := protojson.Marshal(tier)
+		require.NoError(t, err)
+		return tierJson
+	})
+
+	mockDgTx.EXPECT().GetNodeSale(mock.Anything, datagateway.GetNodeSaleParams{
+		BlockHeight: 100,
+		TxIndex:     1,
+	}).Return([]entity.NodeSale{
+		{
+			BlockHeight:           100,
+			TxIndex:               1,
+			Name:                  t.Name(),
+			StartsAt:              startAt,
+			EndsAt:                endAt,
+			Tiers:                 tiers,
+			SellerPublicKey:       sellerPubkeyHex,
+			MaxPerAddress:         100,
+			DeployTxHash:          "040404040404",
+			MaxDiscountPercentage: 50,
+			SellerWallet:          sellerWallet.EncodeAddress(),
+		},
+	}, nil)
+
+	buyerPrivateKey, _ := btcec.NewPrivateKey()
+	buyerPubkeyHex := hex.EncodeToString(buyerPrivateKey.PubKey().SerializeCompressed())
+
+	mockDgTx.EXPECT().GetNodesByIds(mock.Anything, mock.Anything).Return(nil, nil)
+
+	mockDgTx.EXPECT().GetNodesByOwner(mock.Anything, datagateway.GetNodesByOwnerParams{
+		SaleBlock:      100,
+		SaleTxIndex:    1,
+		OwnerPublicKey: buyerPubkeyHex,
+	}).Return([]entity.Node{
+		{
+			SaleBlock:      100,
+			SaleTxIndex:    1,
+			NodeID:         9,
+			TierIndex:      2,
+			OwnerPublicKey: buyerPubkeyHex,
+		},
+		{
+			SaleBlock:      100,
+			SaleTxIndex:    1,
+			NodeID:         10,
+			TierIndex:      2,
+			OwnerPublicKey: buyerPubkeyHex,
+		},
+		{
+			SaleBlock:      100,
+			SaleTxIndex:    1,
+			NodeID:         11,
+			TierIndex:      2,
+			OwnerPublicKey: buyerPubkeyHex,
+		},
+	}, nil)
+
+	payload := &protobuf.PurchasePayload{
+		DeployID: &protobuf.ActionID{
+			Block:   100,
+			TxIndex: 1,
+		},
+		BuyerPublicKey: buyerPubkeyHex,
+		TimeOutBlock:   uint64(testBlockHeight) + 5,
+		NodeIDs:        []uint32{12, 13, 14},
+		TotalAmountSat: 600,
+	}
+
+	payloadBytes, _ := proto.Marshal(payload)
+	payloadHash := chainhash.DoubleHashB(payloadBytes)
+	signature := ecdsa.Sign(sellerPrivateKey, payloadHash[:])
+	signatureHex := hex.EncodeToString(signature.Serialize())
+
+	message := &protobuf.NodeSaleEvent{
+		Action: protobuf.Action_ACTION_PURCHASE,
+		Purchase: &protobuf.ActionPurchase{
+			Payload:         payload,
+			SellerSignature: signatureHex,
+		},
+	}
+
+	event, block := assembleTestEvent(buyerPrivateKey, "10101010", "10101010", 0, 0, message)
+	event.InputValue = 600
+
+	mockDgTx.EXPECT().CreateEvent(mock.Anything, mock.MatchedBy(func(event entity.NodeSaleEvent) bool {
+		return event.Valid == false && event.Reason == purchase.OVER_LIMIT_PER_TIER
+	})).Return(nil)
+
+	err := p.ProcessPurchase(ctx, mockDgTx, block, event)
+	require.NoError(t, err)
+}

modules/nodesale/repository/postgres/gen/blocks.sql.go

@@ -0,0 +1,62 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.27.0
+// source: blocks.sql
+
+package gen
+
+import (
+	"context"
+)
+
+const createBlock = `-- name: CreateBlock :exec
+INSERT INTO blocks ("block_height", "block_hash", "module")
+VALUES ($1, $2, $3)
+`
+
+type CreateBlockParams struct {
+	BlockHeight int64
+	BlockHash   string
+	Module      string
+}
+
+func (q *Queries) CreateBlock(ctx context.Context, arg CreateBlockParams) error {
+	_, err := q.db.Exec(ctx, createBlock, arg.BlockHeight, arg.BlockHash, arg.Module)
+	return err
+}
+
+const getBlock = `-- name: GetBlock :one
+SELECT block_height, block_hash, module FROM blocks
+WHERE "block_height" = $1
+`
+
+func (q *Queries) GetBlock(ctx context.Context, blockHeight int64) (Block, error) {
+	row := q.db.QueryRow(ctx, getBlock, blockHeight)
+	var i Block
+	err := row.Scan(&i.BlockHeight, &i.BlockHash, &i.Module)
+	return i, err
+}
+
+const getLastProcessedBlock = `-- name: GetLastProcessedBlock :one
+SELECT block_height, block_hash, module FROM blocks ORDER BY block_height DESC LIMIT 1
+`
+
+func (q *Queries) GetLastProcessedBlock(ctx context.Context) (Block, error) {
+	row := q.db.QueryRow(ctx, getLastProcessedBlock)
+	var i Block
+	err := row.Scan(&i.BlockHeight, &i.BlockHash, &i.Module)
+	return i, err
+}
+
+const removeBlockFrom = `-- name: RemoveBlockFrom :execrows
+DELETE FROM blocks
+WHERE "block_height" >= $1
+`
+
+func (q *Queries) RemoveBlockFrom(ctx context.Context, fromBlock int64) (int64, error) {
+	result, err := q.db.Exec(ctx, removeBlockFrom, fromBlock)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected(), nil
+}

modules/nodesale/repository/postgres/gen/db.go

@@ -0,0 +1,32 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.27.0
+
+package gen
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+type DBTX interface {
+	Exec(context.Context, string, ...interface{}) (pgconn.CommandTag, error)
+	Query(context.Context, string, ...interface{}) (pgx.Rows, error)
+	QueryRow(context.Context, string, ...interface{}) pgx.Row
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func (q *Queries) WithTx(tx pgx.Tx) *Queries {
+	return &Queries{
+		db: tx,
+	}
+}

modules/nodesale/repository/postgres/gen/events.sql.go

@@ -0,0 +1,104 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.27.0
+// source: events.sql
+
+package gen
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+const createEvent = `-- name: CreateEvent :exec
+INSERT INTO events ("tx_hash", "block_height", "tx_index", "wallet_address", "valid", "action", 
+                    "raw_message", "parsed_message", "block_timestamp", "block_hash", "metadata",
+                    "reason")
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
+`
+
+type CreateEventParams struct {
+	TxHash         string
+	BlockHeight    int64
+	TxIndex        int32
+	WalletAddress  string
+	Valid          bool
+	Action         int32
+	RawMessage     []byte
+	ParsedMessage  []byte
+	BlockTimestamp pgtype.Timestamp
+	BlockHash      string
+	Metadata       []byte
+	Reason         string
+}
+
+func (q *Queries) CreateEvent(ctx context.Context, arg CreateEventParams) error {
+	_, err := q.db.Exec(ctx, createEvent,
+		arg.TxHash,
+		arg.BlockHeight,
+		arg.TxIndex,
+		arg.WalletAddress,
+		arg.Valid,
+		arg.Action,
+		arg.RawMessage,
+		arg.ParsedMessage,
+		arg.BlockTimestamp,
+		arg.BlockHash,
+		arg.Metadata,
+		arg.Reason,
+	)
+	return err
+}
+
+const getEventsByWallet = `-- name: GetEventsByWallet :many
+SELECT tx_hash, block_height, tx_index, wallet_address, valid, action, raw_message, parsed_message, block_timestamp, block_hash, metadata, reason
+FROM events
+WHERE wallet_address = $1
+`
+
+func (q *Queries) GetEventsByWallet(ctx context.Context, walletAddress string) ([]Event, error) {
+	rows, err := q.db.Query(ctx, getEventsByWallet, walletAddress)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Event
+	for rows.Next() {
+		var i Event
+		if err := rows.Scan(
+			&i.TxHash,
+			&i.BlockHeight,
+			&i.TxIndex,
+			&i.WalletAddress,
+			&i.Valid,
+			&i.Action,
+			&i.RawMessage,
+			&i.ParsedMessage,
+			&i.BlockTimestamp,
+			&i.BlockHash,
+			&i.Metadata,
+			&i.Reason,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const removeEventsFromBlock = `-- name: RemoveEventsFromBlock :execrows
+DELETE FROM events
+WHERE "block_height" >= $1
+`
+
+func (q *Queries) RemoveEventsFromBlock(ctx context.Context, fromBlock int64) (int64, error) {
+	result, err := q.db.Exec(ctx, removeEventsFromBlock, fromBlock)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected(), nil
+}

modules/nodesale/repository/postgres/gen/models.go

@@ -0,0 +1,55 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.27.0
+
+package gen
+
+import (
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+type Block struct {
+	BlockHeight int64
+	BlockHash   string
+	Module      string
+}
+
+type Event struct {
+	TxHash         string
+	BlockHeight    int64
+	TxIndex        int32
+	WalletAddress  string
+	Valid          bool
+	Action         int32
+	RawMessage     []byte
+	ParsedMessage  []byte
+	BlockTimestamp pgtype.Timestamp
+	BlockHash      string
+	Metadata       []byte
+	Reason         string
+}
+
+type Node struct {
+	SaleBlock      int64
+	SaleTxIndex    int32
+	NodeID         int32
+	TierIndex      int32
+	DelegatedTo    string
+	OwnerPublicKey string
+	PurchaseTxHash string
+	DelegateTxHash string
+}
+
+type NodeSale struct {
+	BlockHeight           int64
+	TxIndex               int32
+	Name                  string
+	StartsAt              pgtype.Timestamp
+	EndsAt                pgtype.Timestamp
+	Tiers                 [][]byte
+	SellerPublicKey       string
+	MaxPerAddress         int32
+	DeployTxHash          string
+	MaxDiscountPercentage int32
+	SellerWallet          string
+}

modules/nodesale/repository/postgres/gen/nodes.sql.go

@@ -0,0 +1,312 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.27.0
+// source: nodes.sql
+
+package gen
+
+import (
+	"context"
+)
+
+const clearDelegate = `-- name: ClearDelegate :execrows
+UPDATE nodes
+SET "delegated_to" = ''
+WHERE "delegate_tx_hash" = ''
+`
+
+func (q *Queries) ClearDelegate(ctx context.Context) (int64, error) {
+	result, err := q.db.Exec(ctx, clearDelegate)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected(), nil
+}
+
+const createNode = `-- name: CreateNode :exec
+INSERT INTO nodes (sale_block, sale_tx_index, node_id, tier_index, delegated_to, owner_public_key, purchase_tx_hash, delegate_tx_hash)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+`
+
+type CreateNodeParams struct {
+	SaleBlock      int64
+	SaleTxIndex    int32
+	NodeID         int32
+	TierIndex      int32
+	DelegatedTo    string
+	OwnerPublicKey string
+	PurchaseTxHash string
+	DelegateTxHash string
+}
+
+func (q *Queries) CreateNode(ctx context.Context, arg CreateNodeParams) error {
+	_, err := q.db.Exec(ctx, createNode,
+		arg.SaleBlock,
+		arg.SaleTxIndex,
+		arg.NodeID,
+		arg.TierIndex,
+		arg.DelegatedTo,
+		arg.OwnerPublicKey,
+		arg.PurchaseTxHash,
+		arg.DelegateTxHash,
+	)
+	return err
+}
+
+const getNodeCountByTierIndex = `-- name: GetNodeCountByTierIndex :many
+SELECT (tiers.tier_index)::int AS tier_index, count(nodes.tier_index)
+FROM generate_series($3::int,$4::int) AS tiers(tier_index)
+LEFT JOIN 
+	(SELECT sale_block, sale_tx_index, node_id, tier_index, delegated_to, owner_public_key, purchase_tx_hash, delegate_tx_hash 
+	FROM nodes 
+	WHERE sale_block = $1 AND 
+		sale_tx_index= $2) 
+	AS nodes ON tiers.tier_index = nodes.tier_index 
+GROUP BY tiers.tier_index
+ORDER BY tiers.tier_index
+`
+
+type GetNodeCountByTierIndexParams struct {
+	SaleBlock   int64
+	SaleTxIndex int32
+	FromTier    int32
+	ToTier      int32
+}
+
+type GetNodeCountByTierIndexRow struct {
+	TierIndex int32
+	Count     int64
+}
+
+func (q *Queries) GetNodeCountByTierIndex(ctx context.Context, arg GetNodeCountByTierIndexParams) ([]GetNodeCountByTierIndexRow, error) {
+	rows, err := q.db.Query(ctx, getNodeCountByTierIndex,
+		arg.SaleBlock,
+		arg.SaleTxIndex,
+		arg.FromTier,
+		arg.ToTier,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []GetNodeCountByTierIndexRow
+	for rows.Next() {
+		var i GetNodeCountByTierIndexRow
+		if err := rows.Scan(&i.TierIndex, &i.Count); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getNodesByDeployment = `-- name: GetNodesByDeployment :many
+SELECT sale_block, sale_tx_index, node_id, tier_index, delegated_to, owner_public_key, purchase_tx_hash, delegate_tx_hash 
+FROM nodes
+WHERE sale_block = $1 AND
+    sale_tx_index = $2
+`
+
+type GetNodesByDeploymentParams struct {
+	SaleBlock   int64
+	SaleTxIndex int32
+}
+
+func (q *Queries) GetNodesByDeployment(ctx context.Context, arg GetNodesByDeploymentParams) ([]Node, error) {
+	rows, err := q.db.Query(ctx, getNodesByDeployment, arg.SaleBlock, arg.SaleTxIndex)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Node
+	for rows.Next() {
+		var i Node
+		if err := rows.Scan(
+			&i.SaleBlock,
+			&i.SaleTxIndex,
+			&i.NodeID,
+			&i.TierIndex,
+			&i.DelegatedTo,
+			&i.OwnerPublicKey,
+			&i.PurchaseTxHash,
+			&i.DelegateTxHash,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getNodesByIds = `-- name: GetNodesByIds :many
+SELECT sale_block, sale_tx_index, node_id, tier_index, delegated_to, owner_public_key, purchase_tx_hash, delegate_tx_hash
+FROM nodes
+WHERE sale_block = $1 AND
+    sale_tx_index = $2 AND
+    node_id = ANY ($3::int[])
+`
+
+type GetNodesByIdsParams struct {
+	SaleBlock   int64
+	SaleTxIndex int32
+	NodeIds     []int32
+}
+
+func (q *Queries) GetNodesByIds(ctx context.Context, arg GetNodesByIdsParams) ([]Node, error) {
+	rows, err := q.db.Query(ctx, getNodesByIds, arg.SaleBlock, arg.SaleTxIndex, arg.NodeIds)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Node
+	for rows.Next() {
+		var i Node
+		if err := rows.Scan(
+			&i.SaleBlock,
+			&i.SaleTxIndex,
+			&i.NodeID,
+			&i.TierIndex,
+			&i.DelegatedTo,
+			&i.OwnerPublicKey,
+			&i.PurchaseTxHash,
+			&i.DelegateTxHash,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getNodesByOwner = `-- name: GetNodesByOwner :many
+SELECT sale_block, sale_tx_index, node_id, tier_index, delegated_to, owner_public_key, purchase_tx_hash, delegate_tx_hash 
+FROM nodes
+WHERE sale_block = $1 AND
+    sale_tx_index = $2 AND
+    owner_public_key = $3
+ORDER BY tier_index
+`
+
+type GetNodesByOwnerParams struct {
+	SaleBlock      int64
+	SaleTxIndex    int32
+	OwnerPublicKey string
+}
+
+func (q *Queries) GetNodesByOwner(ctx context.Context, arg GetNodesByOwnerParams) ([]Node, error) {
+	rows, err := q.db.Query(ctx, getNodesByOwner, arg.SaleBlock, arg.SaleTxIndex, arg.OwnerPublicKey)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Node
+	for rows.Next() {
+		var i Node
+		if err := rows.Scan(
+			&i.SaleBlock,
+			&i.SaleTxIndex,
+			&i.NodeID,
+			&i.TierIndex,
+			&i.DelegatedTo,
+			&i.OwnerPublicKey,
+			&i.PurchaseTxHash,
+			&i.DelegateTxHash,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getNodesByPubkey = `-- name: GetNodesByPubkey :many
+SELECT nodes.sale_block, nodes.sale_tx_index, nodes.node_id, nodes.tier_index, nodes.delegated_to, nodes.owner_public_key, nodes.purchase_tx_hash, nodes.delegate_tx_hash
+FROM nodes JOIN events ON nodes.purchase_tx_hash = events.tx_hash
+WHERE sale_block = $1 AND
+    sale_tx_index = $2 AND
+    owner_public_key = $3 AND
+    delegated_to = $4
+`
+
+type GetNodesByPubkeyParams struct {
+	SaleBlock      int64
+	SaleTxIndex    int32
+	OwnerPublicKey string
+	DelegatedTo    string
+}
+
+func (q *Queries) GetNodesByPubkey(ctx context.Context, arg GetNodesByPubkeyParams) ([]Node, error) {
+	rows, err := q.db.Query(ctx, getNodesByPubkey,
+		arg.SaleBlock,
+		arg.SaleTxIndex,
+		arg.OwnerPublicKey,
+		arg.DelegatedTo,
+	)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Node
+	for rows.Next() {
+		var i Node
+		if err := rows.Scan(
+			&i.SaleBlock,
+			&i.SaleTxIndex,
+			&i.NodeID,
+			&i.TierIndex,
+			&i.DelegatedTo,
+			&i.OwnerPublicKey,
+			&i.PurchaseTxHash,
+			&i.DelegateTxHash,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const setDelegates = `-- name: SetDelegates :execrows
+UPDATE nodes
+SET delegated_to = $4, delegate_tx_hash = $3
+WHERE sale_block = $1 AND
+    sale_tx_index = $2 AND
+    node_id = ANY ($5::int[])
+`
+
+type SetDelegatesParams struct {
+	SaleBlock      int64
+	SaleTxIndex    int32
+	DelegateTxHash string
+	Delegatee      string
+	NodeIds        []int32
+}
+
+func (q *Queries) SetDelegates(ctx context.Context, arg SetDelegatesParams) (int64, error) {
+	result, err := q.db.Exec(ctx, setDelegates,
+		arg.SaleBlock,
+		arg.SaleTxIndex,
+		arg.DelegateTxHash,
+		arg.Delegatee,
+		arg.NodeIds,
+	)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected(), nil
+}

modules/nodesale/repository/postgres/gen/nodesales.sql.go

@@ -0,0 +1,92 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.27.0
+// source: nodesales.sql
+
+package gen
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+const createNodeSale = `-- name: CreateNodeSale :exec
+INSERT INTO node_sales ("block_height", "tx_index", "name", "starts_at", "ends_at", "tiers", "seller_public_key", "max_per_address", "deploy_tx_hash", "max_discount_percentage", "seller_wallet")
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
+`
+
+type CreateNodeSaleParams struct {
+	BlockHeight           int64
+	TxIndex               int32
+	Name                  string
+	StartsAt              pgtype.Timestamp
+	EndsAt                pgtype.Timestamp
+	Tiers                 [][]byte
+	SellerPublicKey       string
+	MaxPerAddress         int32
+	DeployTxHash          string
+	MaxDiscountPercentage int32
+	SellerWallet          string
+}
+
+func (q *Queries) CreateNodeSale(ctx context.Context, arg CreateNodeSaleParams) error {
+	_, err := q.db.Exec(ctx, createNodeSale,
+		arg.BlockHeight,
+		arg.TxIndex,
+		arg.Name,
+		arg.StartsAt,
+		arg.EndsAt,
+		arg.Tiers,
+		arg.SellerPublicKey,
+		arg.MaxPerAddress,
+		arg.DeployTxHash,
+		arg.MaxDiscountPercentage,
+		arg.SellerWallet,
+	)
+	return err
+}
+
+const getNodeSale = `-- name: GetNodeSale :many
+SELECT block_height, tx_index, name, starts_at, ends_at, tiers, seller_public_key, max_per_address, deploy_tx_hash, max_discount_percentage, seller_wallet
+FROM node_sales
+WHERE block_height = $1 AND
+    tx_index = $2
+`
+
+type GetNodeSaleParams struct {
+	BlockHeight int64
+	TxIndex     int32
+}
+
+func (q *Queries) GetNodeSale(ctx context.Context, arg GetNodeSaleParams) ([]NodeSale, error) {
+	rows, err := q.db.Query(ctx, getNodeSale, arg.BlockHeight, arg.TxIndex)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []NodeSale
+	for rows.Next() {
+		var i NodeSale
+		if err := rows.Scan(
+			&i.BlockHeight,
+			&i.TxIndex,
+			&i.Name,
+			&i.StartsAt,
+			&i.EndsAt,
+			&i.Tiers,
+			&i.SellerPublicKey,
+			&i.MaxPerAddress,
+			&i.DeployTxHash,
+			&i.MaxDiscountPercentage,
+			&i.SellerWallet,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}

modules/nodesale/repository/postgres/gen/test.sql.go

@@ -0,0 +1,20 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.27.0
+// source: test.sql
+
+package gen
+
+import (
+	"context"
+)
+
+const clearEvents = `-- name: ClearEvents :exec
+DELETE FROM events
+WHERE tx_hash <> ''
+`
+
+func (q *Queries) ClearEvents(ctx context.Context) error {
+	_, err := q.db.Exec(ctx, clearEvents)
+	return err
+}

modules/nodesale/repository/postgres/mapper.go

@@ -0,0 +1,74 @@
+package postgres
+
+import (
+	"encoding/json"
+
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/repository/postgres/gen"
+	"github.com/samber/lo"
+)
+
+func mapNodes(nodes []gen.Node) []entity.Node {
+	return lo.Map(nodes, func(item gen.Node, index int) entity.Node {
+		return entity.Node{
+			SaleBlock:      uint64(item.SaleBlock),
+			SaleTxIndex:    uint32(item.SaleTxIndex),
+			NodeID:         uint32(item.NodeID),
+			TierIndex:      item.TierIndex,
+			DelegatedTo:    item.DelegatedTo,
+			OwnerPublicKey: item.OwnerPublicKey,
+			PurchaseTxHash: item.PurchaseTxHash,
+			DelegateTxHash: item.DelegateTxHash,
+		}
+	})
+}
+
+func mapNodeSales(nodeSales []gen.NodeSale) []entity.NodeSale {
+	return lo.Map(nodeSales, func(item gen.NodeSale, index int) entity.NodeSale {
+		return entity.NodeSale{
+			BlockHeight:           uint64(item.BlockHeight),
+			TxIndex:               uint32(item.TxIndex),
+			Name:                  item.Name,
+			StartsAt:              item.StartsAt.Time,
+			EndsAt:                item.EndsAt.Time,
+			Tiers:                 item.Tiers,
+			SellerPublicKey:       item.SellerPublicKey,
+			MaxPerAddress:         uint32(item.MaxPerAddress),
+			DeployTxHash:          item.DeployTxHash,
+			MaxDiscountPercentage: item.MaxDiscountPercentage,
+			SellerWallet:          item.SellerWallet,
+		}
+	})
+}
+
+func mapNodeCountByTierIndexRows(nodeCount []gen.GetNodeCountByTierIndexRow) []datagateway.GetNodeCountByTierIndexRow {
+	return lo.Map(nodeCount, func(item gen.GetNodeCountByTierIndexRow, index int) datagateway.GetNodeCountByTierIndexRow {
+		return datagateway.GetNodeCountByTierIndexRow{
+			TierIndex: item.TierIndex,
+		}
+	})
+}
+
+func mapNodeSalesEvents(events []gen.Event) []entity.NodeSaleEvent {
+	return lo.Map(events, func(item gen.Event, index int) entity.NodeSaleEvent {
+		var meta entity.MetadataEventPurchase
+		err := json.Unmarshal(item.Metadata, &meta)
+		if err != nil {
+			meta = entity.MetadataEventPurchase{}
+		}
+		return entity.NodeSaleEvent{
+			TxHash:         item.TxHash,
+			BlockHeight:    item.BlockHeight,
+			TxIndex:        item.TxIndex,
+			WalletAddress:  item.WalletAddress,
+			Valid:          item.Valid,
+			Action:         item.Action,
+			RawMessage:     item.RawMessage,
+			ParsedMessage:  item.ParsedMessage,
+			BlockTimestamp: item.BlockTimestamp.Time.UTC(),
+			BlockHash:      item.BlockHash,
+			Metadata:       &meta,
+		}
+	})
+}

modules/nodesale/repository/postgres/repository.go

@@ -0,0 +1,247 @@
+package postgres
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/internal/postgres"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/modules/nodesale/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/nodesale/repository/postgres/gen"
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgtype"
+	"github.com/samber/lo"
+)
+
+type Repository struct {
+	db      postgres.DB
+	queries *gen.Queries
+	tx      pgx.Tx
+}
+
+func NewRepository(db postgres.DB) *Repository {
+	return &Repository{
+		db:      db,
+		queries: gen.New(db),
+	}
+}
+
+func (repo *Repository) CreateBlock(ctx context.Context, arg entity.Block) error {
+	err := repo.queries.CreateBlock(ctx, gen.CreateBlockParams{
+		BlockHeight: arg.BlockHeight,
+		BlockHash:   arg.BlockHash,
+		Module:      arg.Module,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Cannot Add block")
+	}
+
+	return nil
+}
+
+func (repo *Repository) GetBlock(ctx context.Context, blockHeight int64) (*entity.Block, error) {
+	block, err := repo.queries.GetBlock(ctx, blockHeight)
+	if err != nil {
+		return nil, errors.Wrap(err, "Cannot get block")
+	}
+	return &entity.Block{
+		BlockHeight: block.BlockHeight,
+		BlockHash:   block.BlockHash,
+		Module:      block.Module,
+	}, nil
+}
+
+func (repo *Repository) GetLastProcessedBlock(ctx context.Context) (*entity.Block, error) {
+	block, err := repo.queries.GetLastProcessedBlock(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "Cannot get last processed block")
+	}
+	return &entity.Block{
+		BlockHeight: block.BlockHeight,
+		BlockHash:   block.BlockHash,
+		Module:      block.Module,
+	}, nil
+}
+
+func (repo *Repository) RemoveBlockFrom(ctx context.Context, fromBlock int64) (int64, error) {
+	affected, err := repo.queries.RemoveBlockFrom(ctx, fromBlock)
+	if err != nil {
+		return 0, errors.Wrap(err, "Cannot remove blocks")
+	}
+	return affected, nil
+}
+
+func (repo *Repository) RemoveEventsFromBlock(ctx context.Context, fromBlock int64) (int64, error) {
+	affected, err := repo.queries.RemoveEventsFromBlock(ctx, fromBlock)
+	if err != nil {
+		return 0, errors.Wrap(err, "Cannot remove events")
+	}
+	return affected, nil
+}
+
+func (repo *Repository) ClearDelegate(ctx context.Context) (int64, error) {
+	affected, err := repo.queries.ClearDelegate(ctx)
+	if err != nil {
+		return 0, errors.Wrap(err, "Cannot clear delegate")
+	}
+	return affected, nil
+}
+
+func (repo *Repository) GetNodesByIds(ctx context.Context, arg datagateway.GetNodesByIdsParams) ([]entity.Node, error) {
+	nodes, err := repo.queries.GetNodesByIds(ctx, gen.GetNodesByIdsParams{
+		SaleBlock:   int64(arg.SaleBlock),
+		SaleTxIndex: int32(arg.SaleTxIndex),
+		NodeIds:     lo.Map(arg.NodeIds, func(item uint32, index int) int32 { return int32(item) }),
+	})
+	if err != nil {
+		return nil, errors.Wrap(err, "Cannot get nodes")
+	}
+	return mapNodes(nodes), nil
+}
+
+func (repo *Repository) CreateEvent(ctx context.Context, arg entity.NodeSaleEvent) error {
+	metaDataBytes := []byte("{}")
+	if arg.Metadata != nil {
+		metaDataBytes, _ = json.Marshal(arg.Metadata)
+	}
+	err := repo.queries.CreateEvent(ctx, gen.CreateEventParams{
+		TxHash:         arg.TxHash,
+		BlockHeight:    arg.BlockHeight,
+		TxIndex:        arg.TxIndex,
+		WalletAddress:  arg.WalletAddress,
+		Valid:          arg.Valid,
+		Action:         arg.Action,
+		RawMessage:     arg.RawMessage,
+		ParsedMessage:  arg.ParsedMessage,
+		BlockTimestamp: pgtype.Timestamp{Time: arg.BlockTimestamp.UTC(), Valid: true},
+		BlockHash:      arg.BlockHash,
+		Metadata:       metaDataBytes,
+		Reason:         arg.Reason,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Cannot add event")
+	}
+	return nil
+}
+
+func (repo *Repository) SetDelegates(ctx context.Context, arg datagateway.SetDelegatesParams) (int64, error) {
+	affected, err := repo.queries.SetDelegates(ctx, gen.SetDelegatesParams{
+		SaleBlock:      int64(arg.SaleBlock),
+		SaleTxIndex:    arg.SaleTxIndex,
+		Delegatee:      arg.Delegatee,
+		DelegateTxHash: arg.DelegateTxHash,
+		NodeIds:        lo.Map(arg.NodeIds, func(item uint32, index int) int32 { return int32(item) }),
+	})
+	if err != nil {
+		return 0, errors.Wrap(err, "Cannot set delegate")
+	}
+	return affected, nil
+}
+
+func (repo *Repository) CreateNodeSale(ctx context.Context, arg entity.NodeSale) error {
+	err := repo.queries.CreateNodeSale(ctx, gen.CreateNodeSaleParams{
+		BlockHeight:           int64(arg.BlockHeight),
+		TxIndex:               int32(arg.TxIndex),
+		Name:                  arg.Name,
+		StartsAt:              pgtype.Timestamp{Time: arg.StartsAt.UTC(), Valid: true},
+		EndsAt:                pgtype.Timestamp{Time: arg.EndsAt.UTC(), Valid: true},
+		Tiers:                 arg.Tiers,
+		SellerPublicKey:       arg.SellerPublicKey,
+		MaxPerAddress:         int32(arg.MaxPerAddress),
+		DeployTxHash:          arg.DeployTxHash,
+		MaxDiscountPercentage: arg.MaxDiscountPercentage,
+		SellerWallet:          arg.SellerWallet,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Cannot add NodeSale")
+	}
+	return nil
+}
+
+func (repo *Repository) GetNodeSale(ctx context.Context, arg datagateway.GetNodeSaleParams) ([]entity.NodeSale, error) {
+	nodeSales, err := repo.queries.GetNodeSale(ctx, gen.GetNodeSaleParams{
+		BlockHeight: int64(arg.BlockHeight),
+		TxIndex:     int32(arg.TxIndex),
+	})
+	if err != nil {
+		return nil, errors.Wrap(err, "Cannot get NodeSale")
+	}
+
+	return mapNodeSales(nodeSales), nil
+}
+
+func (repo *Repository) GetNodesByOwner(ctx context.Context, arg datagateway.GetNodesByOwnerParams) ([]entity.Node, error) {
+	nodes, err := repo.queries.GetNodesByOwner(ctx, gen.GetNodesByOwnerParams{
+		SaleBlock:      int64(arg.SaleBlock),
+		SaleTxIndex:    int32(arg.SaleTxIndex),
+		OwnerPublicKey: arg.OwnerPublicKey,
+	})
+	if err != nil {
+		return nil, errors.Wrap(err, "Cannot get nodes by owner")
+	}
+	return mapNodes(nodes), nil
+}
+
+func (repo *Repository) CreateNode(ctx context.Context, arg entity.Node) error {
+	err := repo.queries.CreateNode(ctx, gen.CreateNodeParams{
+		SaleBlock:      int64(arg.SaleBlock),
+		SaleTxIndex:    int32(arg.SaleTxIndex),
+		NodeID:         int32(arg.NodeID),
+		TierIndex:      arg.TierIndex,
+		DelegatedTo:    arg.DelegatedTo,
+		OwnerPublicKey: arg.OwnerPublicKey,
+		PurchaseTxHash: arg.PurchaseTxHash,
+		DelegateTxHash: arg.DelegateTxHash,
+	})
+	if err != nil {
+		return errors.Wrap(err, "Cannot add node")
+	}
+	return nil
+}
+
+func (repo *Repository) GetNodeCountByTierIndex(ctx context.Context, arg datagateway.GetNodeCountByTierIndexParams) ([]datagateway.GetNodeCountByTierIndexRow, error) {
+	nodeCount, err := repo.queries.GetNodeCountByTierIndex(ctx, gen.GetNodeCountByTierIndexParams{
+		SaleBlock:   int64(arg.SaleBlock),
+		SaleTxIndex: int32(arg.SaleTxIndex),
+		FromTier:    int32(arg.FromTier),
+		ToTier:      int32(arg.ToTier),
+	})
+	if err != nil {
+		return nil, errors.Wrap(err, "Cannot get node count by tier index")
+	}
+
+	return mapNodeCountByTierIndexRows(nodeCount), nil
+}
+
+func (repo *Repository) GetNodesByPubkey(ctx context.Context, arg datagateway.GetNodesByPubkeyParams) ([]entity.Node, error) {
+	nodes, err := repo.queries.GetNodesByPubkey(ctx, gen.GetNodesByPubkeyParams{
+		SaleBlock:      arg.SaleBlock,
+		SaleTxIndex:    arg.SaleTxIndex,
+		OwnerPublicKey: arg.OwnerPublicKey,
+		DelegatedTo:    arg.DelegatedTo,
+	})
+	if err != nil {
+		return nil, errors.Wrap(err, "Cannot get nodes by public key")
+	}
+	return mapNodes(nodes), nil
+}
+
+func (repo *Repository) GetEventsByWallet(ctx context.Context, walletAddress string) ([]entity.NodeSaleEvent, error) {
+	events, err := repo.queries.GetEventsByWallet(ctx, walletAddress)
+	if err != nil {
+		return nil, errors.Wrap(err, "cannot get events by wallet")
+	}
+	return mapNodeSalesEvents(events), nil
+}
+
+func (repo *Repository) GetNodesByDeployment(ctx context.Context, saleBlock int64, saleTxIndex int32) ([]entity.Node, error) {
+	nodes, err := repo.queries.GetNodesByDeployment(ctx, gen.GetNodesByDeploymentParams{
+		SaleBlock:   saleBlock,
+		SaleTxIndex: saleTxIndex,
+	})
+	if err != nil {
+		return nil, errors.Wrap(err, "cannot get nodes by deploy")
+	}
+	return mapNodes(nodes), nil
+}

modules/nodesale/repository/postgres/tx.go

@@ -0,0 +1,62 @@
+package postgres
+
+import (
+	"context"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/modules/nodesale/datagateway"
+	"github.com/gaze-network/indexer-network/pkg/logger"
+	"github.com/jackc/pgx/v5"
+)
+
+var ErrTxAlreadyExists = errors.New("Transaction already exists. Call Commit() or Rollback() first.")
+
+func (r *Repository) begin(ctx context.Context) (*Repository, error) {
+	if r.tx != nil {
+		return nil, errors.WithStack(ErrTxAlreadyExists)
+	}
+	tx, err := r.db.Begin(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to begin transaction")
+	}
+	return &Repository{
+		db:      r.db,
+		queries: r.queries.WithTx(tx),
+		tx:      tx,
+	}, nil
+}
+
+func (r *Repository) BeginNodeSaleTx(ctx context.Context) (datagateway.NodeSaleDataGatewayWithTx, error) {
+	repo, err := r.begin(ctx)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+	return repo, nil
+}
+
+func (r *Repository) Commit(ctx context.Context) error {
+	if r.tx == nil {
+		return nil
+	}
+	err := r.tx.Commit(ctx)
+	if err != nil {
+		return errors.Wrap(err, "failed to commit transaction")
+	}
+	r.tx = nil
+	return nil
+}
+
+func (r *Repository) Rollback(ctx context.Context) error {
+	if r.tx == nil {
+		return nil
+	}
+	err := r.tx.Rollback(ctx)
+	if err != nil && !errors.Is(err, pgx.ErrTxClosed) {
+		return errors.Wrap(err, "failed to rollback transaction")
+	}
+	if err == nil {
+		logger.DebugContext(ctx, "rolled back transaction")
+	}
+	r.tx = nil
+	return nil
+}

modules/nodesale/tapscript.go

@@ -0,0 +1,25 @@
+package nodesale
+
+import "github.com/btcsuite/btcd/txscript"
+
+func extractTapScript(witness [][]byte) (tokenizer txscript.ScriptTokenizer, controlBlock *txscript.ControlBlock, isTapScript bool) {
+	witness = removeAnnexFromWitness(witness)
+	if len(witness) < 2 {
+		return txscript.ScriptTokenizer{}, nil, false
+	}
+	script := witness[len(witness)-2]
+	rawControl := witness[len(witness)-1]
+	parsedControl, err := txscript.ParseControlBlock(rawControl)
+	if err != nil {
+		return txscript.ScriptTokenizer{}, nil, false
+	}
+
+	return txscript.MakeScriptTokenizer(0, script), parsedControl, true
+}
+
+func removeAnnexFromWitness(witness [][]byte) [][]byte {
+	if len(witness) >= 2 && len(witness[len(witness)-1]) > 0 && witness[len(witness)-1][0] == txscript.TaprootAnnexTag {
+		return witness[:len(witness)-1]
+	}
+	return witness
+}

modules/runes/api/api.go

@@ -0,0 +1,11 @@
+package api
+
+import (
+	"github.com/gaze-network/indexer-network/common"
+	"github.com/gaze-network/indexer-network/modules/runes/api/httphandler"
+	"github.com/gaze-network/indexer-network/modules/runes/usecase"
+)
+
+func NewHTTPHandler(network common.Network, usecase *usecase.Usecase) *httphandler.HttpHandler {
+	return httphandler.New(network, usecase)
+}

modules/runes/api/httphandler/get_balances_by_address.go

@@ -0,0 +1,142 @@
+package httphandler
+
+import (
+	"net/url"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/modules/runes/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/runes/runes"
+	"github.com/gaze-network/uint128"
+	"github.com/gofiber/fiber/v2"
+	"github.com/samber/lo"
+)
+
+type getBalancesRequest struct {
+	paginationRequest
+	Wallet      string `params:"wallet"`
+	Id          string `query:"id"`
+	BlockHeight uint64 `query:"blockHeight"`
+}
+
+const (
+	getBalancesMaxLimit     = 5000
+	getBalancesDefaultLimit = 100
+)
+
+func (r *getBalancesRequest) Validate() error {
+	var errList []error
+	if r.Wallet == "" {
+		errList = append(errList, errors.New("'wallet' is required"))
+	}
+	if r.Id != "" {
+		id, err := url.QueryUnescape(r.Id)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+		r.Id = id
+		if !isRuneIdOrRuneName(r.Id) {
+			errList = append(errList, errors.Errorf("id '%s' is not valid rune id or rune name", r.Id))
+		}
+	}
+	if r.Limit < 0 {
+		errList = append(errList, errors.New("'limit' must be non-negative"))
+	}
+	if r.Limit > getBalancesMaxLimit {
+		errList = append(errList, errors.Errorf("'limit' cannot exceed %d", getBalancesMaxLimit))
+	}
+	return errs.WithPublicMessage(errors.Join(errList...), "validation error")
+}
+
+type balance struct {
+	Amount   uint128.Uint128  `json:"amount"`
+	Id       runes.RuneId     `json:"id"`
+	Name     runes.SpacedRune `json:"name"`
+	Symbol   string           `json:"symbol"`
+	Decimals uint8            `json:"decimals"`
+}
+
+type getBalancesResult struct {
+	List        []balance `json:"list"`
+	BlockHeight uint64    `json:"blockHeight"`
+}
+
+type getBalancesResponse = HttpResponse[getBalancesResult]
+
+func (h *HttpHandler) GetBalances(ctx *fiber.Ctx) (err error) {
+	var req getBalancesRequest
+	if err := ctx.ParamsParser(&req); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := ctx.QueryParser(&req); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := req.Validate(); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := req.ParseDefault(); err != nil {
+		return errors.WithStack(err)
+	}
+
+	pkScript, ok := resolvePkScript(h.network, req.Wallet)
+	if !ok {
+		return errs.NewPublicError("unable to resolve pkscript from \"wallet\"")
+	}
+
+	blockHeight := req.BlockHeight
+	if blockHeight == 0 {
+		blockHeader, err := h.usecase.GetLatestBlock(ctx.UserContext())
+		if err != nil {
+			if errors.Is(err, errs.NotFound) {
+				return errs.NewPublicError("latest block not found")
+			}
+			return errors.Wrap(err, "error during GetLatestBlock")
+		}
+		blockHeight = uint64(blockHeader.Height)
+	}
+
+	balances, err := h.usecase.GetBalancesByPkScript(ctx.UserContext(), pkScript, blockHeight, req.Limit, req.Offset)
+	if err != nil {
+		if errors.Is(err, errs.NotFound) {
+			return errs.NewPublicError("balances not found")
+		}
+		return errors.Wrap(err, "error during GetBalancesByPkScript")
+	}
+
+	runeId, ok := h.resolveRuneId(ctx.UserContext(), req.Id)
+	if ok {
+		// filter out balances that don't match the requested rune id
+		balances = lo.Filter(balances, func(b *entity.Balance, _ int) bool {
+			return b.RuneId == runeId
+		})
+	}
+
+	balanceRuneIds := lo.Map(balances, func(b *entity.Balance, _ int) runes.RuneId {
+		return b.RuneId
+	})
+	runeEntries, err := h.usecase.GetRuneEntryByRuneIdBatch(ctx.UserContext(), balanceRuneIds)
+	if err != nil {
+		return errors.Wrap(err, "error during GetRuneEntryByRuneIdBatch")
+	}
+
+	balanceList := make([]balance, 0, len(balances))
+	for _, b := range balances {
+		runeEntry := runeEntries[b.RuneId]
+		balanceList = append(balanceList, balance{
+			Amount:   b.Amount,
+			Id:       b.RuneId,
+			Name:     runeEntry.SpacedRune,
+			Symbol:   string(runeEntry.Symbol),
+			Decimals: runeEntry.Divisibility,
+		})
+	}
+
+	resp := getBalancesResponse{
+		Result: &getBalancesResult{
+			BlockHeight: blockHeight,
+			List:        balanceList,
+		},
+	}
+
+	return errors.WithStack(ctx.JSON(resp))
+}

modules/runes/api/httphandler/get_balances_by_address_batch.go

@@ -0,0 +1,166 @@
+package httphandler
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/modules/runes/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/runes/runes"
+	"github.com/gofiber/fiber/v2"
+	"github.com/samber/lo"
+	"golang.org/x/sync/errgroup"
+)
+
+type getBalanceQuery struct {
+	Wallet      string `json:"wallet"`
+	Id          string `json:"id"`
+	BlockHeight uint64 `json:"blockHeight"`
+	Limit       int32  `json:"limit"`
+	Offset      int32  `json:"offset"`
+}
+
+type getBalancesBatchRequest struct {
+	Queries []getBalanceQuery `json:"queries"`
+}
+
+const getBalancesBatchMaxQueries = 100
+
+func (r getBalancesBatchRequest) Validate() error {
+	var errList []error
+	if len(r.Queries) == 0 {
+		errList = append(errList, errors.New("at least one query is required"))
+	}
+	if len(r.Queries) > getBalancesBatchMaxQueries {
+		errList = append(errList, errors.Errorf("cannot exceed %d queries", getBalancesBatchMaxQueries))
+	}
+	for i, query := range r.Queries {
+		if query.Wallet == "" {
+			errList = append(errList, errors.Errorf("queries[%d]: 'wallet' is required", i))
+		}
+		if query.Id != "" && !isRuneIdOrRuneName(query.Id) {
+			errList = append(errList, errors.Errorf("queries[%d]: id '%s' is not valid rune id or rune name", i, query.Id))
+		}
+		if query.Limit < 0 {
+			errList = append(errList, errors.Errorf("queries[%d]: 'limit' must be non-negative", i))
+		}
+		if query.Limit > getBalancesMaxLimit {
+			errList = append(errList, errors.Errorf("queries[%d]: 'limit' cannot exceed %d", i, getBalancesMaxLimit))
+		}
+	}
+	return errs.WithPublicMessage(errors.Join(errList...), "validation error")
+}
+
+type getBalancesBatchResult struct {
+	List []*getBalancesResult `json:"list"`
+}
+
+type getBalancesBatchResponse = HttpResponse[getBalancesBatchResult]
+
+func (h *HttpHandler) GetBalancesBatch(ctx *fiber.Ctx) (err error) {
+	var req getBalancesBatchRequest
+	if err := ctx.BodyParser(&req); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := req.Validate(); err != nil {
+		return errors.WithStack(err)
+	}
+
+	var latestBlockHeight uint64
+	blockHeader, err := h.usecase.GetLatestBlock(ctx.UserContext())
+	if err != nil {
+		if errors.Is(err, errs.NotFound) {
+			return errs.NewPublicError("latest block not found")
+		}
+		return errors.Wrap(err, "error during GetLatestBlock")
+	}
+	latestBlockHeight = uint64(blockHeader.Height)
+
+	processQuery := func(ctx context.Context, query getBalanceQuery, queryIndex int) (*getBalancesResult, error) {
+		pkScript, ok := resolvePkScript(h.network, query.Wallet)
+		if !ok {
+			return nil, errs.NewPublicError(fmt.Sprintf("unable to resolve pkscript from \"queries[%d].wallet\"", queryIndex))
+		}
+
+		blockHeight := query.BlockHeight
+		if blockHeight == 0 {
+			blockHeight = latestBlockHeight
+		}
+
+		if query.Limit == 0 {
+			query.Limit = getBalancesDefaultLimit
+		}
+
+		balances, err := h.usecase.GetBalancesByPkScript(ctx, pkScript, blockHeight, query.Limit, query.Offset)
+		if err != nil {
+			if errors.Is(err, errs.NotFound) {
+				return nil, errs.NewPublicError("balances not found")
+			}
+			return nil, errors.Wrap(err, "error during GetBalancesByPkScript")
+		}
+
+		runeId, ok := h.resolveRuneId(ctx, query.Id)
+		if ok {
+			// filter out balances that don't match the requested rune id
+			balances = lo.Filter(balances, func(b *entity.Balance, _ int) bool {
+				return b.RuneId == runeId
+			})
+		}
+
+		balanceRuneIds := lo.Map(balances, func(b *entity.Balance, _ int) runes.RuneId {
+			return b.RuneId
+		})
+		runeEntries, err := h.usecase.GetRuneEntryByRuneIdBatch(ctx, balanceRuneIds)
+		if err != nil {
+			if errors.Is(err, errs.NotFound) {
+				return nil, errs.NewPublicError("rune not found")
+			}
+			return nil, errors.Wrap(err, "error during GetRuneEntryByRuneIdBatch")
+		}
+
+		balanceList := make([]balance, 0, len(balances))
+		for _, b := range balances {
+			runeEntry := runeEntries[b.RuneId]
+			balanceList = append(balanceList, balance{
+				Amount:   b.Amount,
+				Id:       b.RuneId,
+				Name:     runeEntry.SpacedRune,
+				Symbol:   string(runeEntry.Symbol),
+				Decimals: runeEntry.Divisibility,
+			})
+		}
+
+		result := getBalancesResult{
+			BlockHeight: blockHeight,
+			List:        balanceList,
+		}
+		return &result, nil
+	}
+
+	results := make([]*getBalancesResult, len(req.Queries))
+	eg, ectx := errgroup.WithContext(ctx.UserContext())
+	for i, query := range req.Queries {
+		i := i
+		query := query
+		eg.Go(func() error {
+			result, err := processQuery(ectx, query, i)
+			if err != nil {
+				return errors.Wrapf(err, "error during processQuery for query %d", i)
+			}
+			results[i] = result
+			return nil
+		})
+	}
+	if err := eg.Wait(); err != nil {
+		return errors.WithStack(err)
+	}
+
+	resp := getBalancesBatchResponse{
+		Result: &getBalancesBatchResult{
+			List: results,
+		},
+	}
+
+	return errors.WithStack(ctx.JSON(resp))
+}

modules/runes/api/httphandler/get_current_block.go

@@ -0,0 +1,34 @@
+package httphandler
+
+import (
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/modules/runes/constants"
+	"github.com/gofiber/fiber/v2"
+)
+
+type getCurrentBlockResult struct {
+	Hash   string `json:"hash"`
+	Height int64  `json:"height"`
+}
+
+type getCurrentBlockResponse = HttpResponse[getCurrentBlockResult]
+
+func (h *HttpHandler) GetCurrentBlock(ctx *fiber.Ctx) (err error) {
+	blockHeader, err := h.usecase.GetLatestBlock(ctx.UserContext())
+	if err != nil {
+		if !errors.Is(err, errs.NotFound) {
+			return errors.Wrap(err, "error during GetLatestBlock")
+		}
+		blockHeader = constants.StartingBlockHeader[h.network]
+	}
+
+	resp := getCurrentBlockResponse{
+		Result: &getCurrentBlockResult{
+			Hash:   blockHeader.Hash.String(),
+			Height: blockHeader.Height,
+		},
+	}
+
+	return errors.WithStack(ctx.JSON(resp))
+}

modules/runes/api/httphandler/get_holders.go

@@ -0,0 +1,154 @@
+package httphandler
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"net/url"
+	"slices"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/modules/runes/internal/entity"
+	"github.com/gaze-network/indexer-network/modules/runes/runes"
+	"github.com/gaze-network/uint128"
+	"github.com/gofiber/fiber/v2"
+	"github.com/shopspring/decimal"
+)
+
+type getHoldersRequest struct {
+	paginationRequest
+	Id          string `params:"id"`
+	BlockHeight uint64 `query:"blockHeight"`
+}
+
+const (
+	getHoldersMaxLimit = 1000
+)
+
+func (r *getHoldersRequest) Validate() error {
+	var errList []error
+	id, err := url.QueryUnescape(r.Id)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+	r.Id = id
+	if !isRuneIdOrRuneName(r.Id) {
+		errList = append(errList, errors.Errorf("id '%s' is not valid rune id or rune name", r.Id))
+	}
+	if r.Limit < 0 {
+		errList = append(errList, errors.New("'limit' must be non-negative"))
+	}
+	if r.Limit > getHoldersMaxLimit {
+		errList = append(errList, errors.Errorf("'limit' cannot exceed %d", getHoldersMaxLimit))
+	}
+	return errs.WithPublicMessage(errors.Join(errList...), "validation error")
+}
+
+type holdingBalance struct {
+	Address  string          `json:"address"`
+	PkScript string          `json:"pkScript"`
+	Amount   uint128.Uint128 `json:"amount"`
+	Percent  float64         `json:"percent"`
+}
+
+type getHoldersResult struct {
+	BlockHeight  uint64           `json:"blockHeight"`
+	TotalSupply  uint128.Uint128  `json:"totalSupply"`
+	MintedAmount uint128.Uint128  `json:"mintedAmount"`
+	Decimals     uint8            `json:"decimals"`
+	List         []holdingBalance `json:"list"`
+}
+
+type getHoldersResponse = HttpResponse[getHoldersResult]
+
+func (h *HttpHandler) GetHolders(ctx *fiber.Ctx) (err error) {
+	var req getHoldersRequest
+	if err := ctx.ParamsParser(&req); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := ctx.QueryParser(&req); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := req.Validate(); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := req.ParseDefault(); err != nil {
+		return errors.WithStack(err)
+	}
+
+	blockHeight := req.BlockHeight
+	if blockHeight == 0 {
+		blockHeader, err := h.usecase.GetLatestBlock(ctx.UserContext())
+		if err != nil {
+			return errors.Wrap(err, "error during GetLatestBlock")
+		}
+		blockHeight = uint64(blockHeader.Height)
+	}
+
+	var runeId runes.RuneId
+	if req.Id != "" {
+		var ok bool
+		runeId, ok = h.resolveRuneId(ctx.UserContext(), req.Id)
+		if !ok {
+			return errs.NewPublicError(fmt.Sprintf("unable to resolve rune id \"%s\" from \"id\"", req.Id))
+		}
+	}
+
+	runeEntry, err := h.usecase.GetRuneEntryByRuneIdAndHeight(ctx.UserContext(), runeId, blockHeight)
+	if err != nil {
+		if errors.Is(err, errs.NotFound) {
+			return errs.NewPublicError("rune not found")
+		}
+		return errors.Wrap(err, "error during GetRuneEntryByRuneIdAndHeight")
+	}
+	holdingBalances, err := h.usecase.GetBalancesByRuneId(ctx.UserContext(), runeId, blockHeight, req.Limit, req.Offset)
+	if err != nil {
+		if errors.Is(err, errs.NotFound) {
+			return errs.NewPublicError("balances not found")
+		}
+		return errors.Wrap(err, "error during GetBalancesByRuneId")
+	}
+
+	totalSupply, err := runeEntry.Supply()
+	if err != nil {
+		return errors.Wrap(err, "cannot get total supply of rune")
+	}
+	mintedAmount, err := runeEntry.MintedAmount()
+	if err != nil {
+		return errors.Wrap(err, "cannot get minted amount of rune")
+	}
+
+	list := make([]holdingBalance, 0, len(holdingBalances))
+	for _, balance := range holdingBalances {
+		address := addressFromPkScript(balance.PkScript, h.network)
+		amount := decimal.NewFromBigInt(balance.Amount.Big(), 0)
+		percent := amount.Div(decimal.NewFromBigInt(totalSupply.Big(), 0))
+		list = append(list, holdingBalance{
+			Address:  address,
+			PkScript: hex.EncodeToString(balance.PkScript),
+			Amount:   balance.Amount,
+			Percent:  percent.InexactFloat64(),
+		})
+	}
+
+	// sort by amount descending, then pk script ascending
+	slices.SortFunc(holdingBalances, func(b1, b2 *entity.Balance) int {
+		if b1.Amount.Cmp(b2.Amount) == 0 {
+			return bytes.Compare(b1.PkScript, b2.PkScript)
+		}
+		return b2.Amount.Cmp(b1.Amount)
+	})
+
+	resp := getHoldersResponse{
+		Result: &getHoldersResult{
+			BlockHeight:  blockHeight,
+			TotalSupply:  totalSupply,
+			MintedAmount: mintedAmount,
+			Decimals:     runeEntry.Divisibility,
+			List:         list,
+		},
+	}
+
+	return errors.WithStack(ctx.JSON(resp))
+}

modules/runes/api/httphandler/get_token_info.go

@@ -0,0 +1,199 @@
+package httphandler
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/modules/runes/runes"
+	"github.com/gaze-network/uint128"
+	"github.com/gofiber/fiber/v2"
+	"github.com/samber/lo"
+)
+
+type getTokenInfoRequest struct {
+	Id                  string `params:"id"`
+	BlockHeight         uint64 `query:"blockHeight"`
+	AdditionalFieldsRaw string `query:"additionalFields"` // comma-separated list of additional fields
+	AdditionalFields    []string
+}
+
+func (r *getTokenInfoRequest) Validate() error {
+	var errList []error
+	id, err := url.QueryUnescape(r.Id)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+	r.Id = id
+	if !isRuneIdOrRuneName(r.Id) {
+		errList = append(errList, errors.Errorf("id '%s' is not valid rune id or rune name", r.Id))
+	}
+
+	if r.AdditionalFieldsRaw == "" {
+		// temporarily set default value for backward compatibility
+		r.AdditionalFieldsRaw = "holdersCount" // TODO: remove this default value after all clients are updated
+	}
+	r.AdditionalFields = strings.Split(r.AdditionalFieldsRaw, ",")
+
+	return errs.WithPublicMessage(errors.Join(errList...), "validation error")
+}
+
+type entryTerms struct {
+	Amount      uint128.Uint128 `json:"amount"`
+	Cap         uint128.Uint128 `json:"cap"`
+	HeightStart *uint64         `json:"heightStart"`
+	HeightEnd   *uint64         `json:"heightEnd"`
+	OffsetStart *uint64         `json:"offsetStart"`
+	OffsetEnd   *uint64         `json:"offsetEnd"`
+}
+
+type entry struct {
+	Divisibility  uint8           `json:"divisibility"`
+	Premine       uint128.Uint128 `json:"premine"`
+	Rune          runes.Rune      `json:"rune"`
+	Spacers       uint32          `json:"spacers"`
+	Symbol        string          `json:"symbol"`
+	Terms         entryTerms      `json:"terms"`
+	Turbo         bool            `json:"turbo"`
+	EtchingTxHash string          `json:"etchingTxHash"`
+}
+
+type tokenInfoExtend struct {
+	HoldersCount *int64 `json:"holdersCount,omitempty"`
+	Entry        entry  `json:"entry"`
+}
+
+type getTokenInfoResult struct {
+	Id                runes.RuneId     `json:"id"`
+	Name              runes.SpacedRune `json:"name"` // rune name
+	Symbol            string           `json:"symbol"`
+	TotalSupply       uint128.Uint128  `json:"totalSupply"`
+	CirculatingSupply uint128.Uint128  `json:"circulatingSupply"`
+	MintedAmount      uint128.Uint128  `json:"mintedAmount"`
+	BurnedAmount      uint128.Uint128  `json:"burnedAmount"`
+	Decimals          uint8            `json:"decimals"`
+	DeployedAt        int64            `json:"deployedAt"` // unix timestamp
+	DeployedAtHeight  uint64           `json:"deployedAtHeight"`
+	CompletedAt       *int64           `json:"completedAt"` // unix timestamp
+	CompletedAtHeight *uint64          `json:"completedAtHeight"`
+	HoldersCount      int64            `json:"holdersCount"` // deprecated // TODO: remove later
+	Extend            tokenInfoExtend  `json:"extend"`
+}
+
+type getTokenInfoResponse = HttpResponse[getTokenInfoResult]
+
+func (h *HttpHandler) GetTokenInfo(ctx *fiber.Ctx) (err error) {
+	var req getTokenInfoRequest
+	if err := ctx.ParamsParser(&req); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := ctx.QueryParser(&req); err != nil {
+		return errors.WithStack(err)
+	}
+	if err := req.Validate(); err != nil {
+		return errors.WithStack(err)
+	}
+
+	blockHeight := req.BlockHeight
+	if blockHeight == 0 {
+		blockHeader, err := h.usecase.GetLatestBlock(ctx.UserContext())
+		if err != nil {
+			if errors.Is(err, errs.NotFound) {
+				return errs.NewPublicError("latest block not found")
+			}
+			return errors.Wrap(err, "error during GetLatestBlock")
+		}
+		blockHeight = uint64(blockHeader.Height)
+	}
+
+	var runeId runes.RuneId
+	if req.Id != "" {
+		var ok bool
+		runeId, ok = h.resolveRuneId(ctx.UserContext(), req.Id)
+		if !ok {
+			return errs.NewPublicError(fmt.Sprintf("unable to resolve rune id \"%s\" from \"id\"", req.Id))
+		}
+	}
+
+	runeEntry, err := h.usecase.GetRuneEntryByRuneIdAndHeight(ctx.UserContext(), runeId, blockHeight)
+	if err != nil {
+		if errors.Is(err, errs.NotFound) {
+			return errs.NewPublicError("rune not found")
+		}
+		return errors.Wrap(err, "error during GetRuneEntryByRuneIdAndHeight")
+	}
+	var holdersCountPtr *int64
+	if lo.Contains(req.AdditionalFields, "holdersCount") {
+		holdersCount, err := h.usecase.GetTotalHoldersByRuneId(ctx.UserContext(), runeId, blockHeight)
+		if err != nil {
+			if errors.Is(err, errs.NotFound) {
+				return errs.NewPublicError("rune not found")
+			}
+			return errors.Wrap(err, "error during GetBalancesByRuneId")
+		}
+		holdersCountPtr = &holdersCount
+	}
+
+	result, err := createTokenInfoResult(runeEntry, holdersCountPtr)
+	if err != nil {
+		return errors.Wrap(err, "error during createTokenInfoResult")
+	}
+
+	resp := getTokenInfoResponse{
+		Result: result,
+	}
+
+	return errors.WithStack(ctx.JSON(resp))
+}
+
+func createTokenInfoResult(runeEntry *runes.RuneEntry, holdersCount *int64) (*getTokenInfoResult, error) {
+	totalSupply, err := runeEntry.Supply()
+	if err != nil {
+		return nil, errors.Wrap(err, "cannot get total supply of rune")
+	}
+	mintedAmount, err := runeEntry.MintedAmount()
+	if err != nil {
+		return nil, errors.Wrap(err, "cannot get minted amount of rune")
+	}
+	circulatingSupply := mintedAmount.Sub(runeEntry.BurnedAmount)
+
+	terms := lo.FromPtr(runeEntry.Terms)
+
+	return &getTokenInfoResult{
+		Id:                runeEntry.RuneId,
+		Name:              runeEntry.SpacedRune,
+		Symbol:            string(runeEntry.Symbol),
+		TotalSupply:       totalSupply,
+		CirculatingSupply: circulatingSupply,
+		MintedAmount:      mintedAmount,
+		BurnedAmount:      runeEntry.BurnedAmount,
+		Decimals:          runeEntry.Divisibility,
+		DeployedAt:        runeEntry.EtchedAt.Unix(),
+		DeployedAtHeight:  runeEntry.EtchingBlock,
+		CompletedAt:       lo.Ternary(runeEntry.CompletedAt.IsZero(), nil, lo.ToPtr(runeEntry.CompletedAt.Unix())),
+		CompletedAtHeight: runeEntry.CompletedAtHeight,
+		HoldersCount:      lo.FromPtr(holdersCount),
+		Extend: tokenInfoExtend{
+			HoldersCount: holdersCount,
+			Entry: entry{
+				Divisibility: runeEntry.Divisibility,
+				Premine:      runeEntry.Premine,
+				Rune:         runeEntry.SpacedRune.Rune,
+				Spacers:      runeEntry.SpacedRune.Spacers,
+				Symbol:       string(runeEntry.Symbol),
+				Terms: entryTerms{
+					Amount:      lo.FromPtr(terms.Amount),
+					Cap:         lo.FromPtr(terms.Cap),
+					HeightStart: terms.HeightStart,
+					HeightEnd:   terms.HeightEnd,
+					OffsetStart: terms.OffsetStart,
+					OffsetEnd:   terms.OffsetEnd,
+				},
+				Turbo:         runeEntry.Turbo,
+				EtchingTxHash: runeEntry.EtchingTxHash.String(),
+			},
+		},
+	}, nil
+}