bro-sdk/CHANGELOG.md

Changelog

[Unreleased (0.5.0-x)]

Breaking Changes

• Project Rebranded to Brotocol:
  • The package scope changed from @xlink-network to @brotocol-xyz.
  • The main SDK class XLinkSDK has been renamed to BroSDK.
• Upgraded @stacks/ dependencies to v7.x*
  • bridgeFromStacks.sendTransaction type signature changed

Major New Features

• BRC20 Bridging Support

  • Implemented full bridging capabilities for BRC20 tokens across multiple chains
  • Added bridgeFromBRC20 and estimateBridgeTransactionFromBRC20 APIs
  • Enabled bidirectional transfers between BRC20 and other supported chains

• Runes Bridging Support

  • Added comprehensive support for Runes protocol tokens
  • Implemented bridgeFromRunes and estimateBridgeTransactionFromRunes APIs
  • Added Runestone transaction validation and processing

• Cross-Chain Swap Capabilities

  • Implemented cross-chain swaps for seamless token exchanges
  • Enhanced route detection between existing tokens
  • Optimized swap transaction flow with improved fee estimation

• DEX Aggregator Integrations

  • Added Matcha.xyz (0x Protocol) integration for optimal swap routing
  • Enhanced swap parameter helpers for DEX interactions
  • Added multi-hop routing capabilities for better exchange rates

• New Token Support

  • Added support for WBTC on Arbitrum
  • Added STX token on EVM chains
  • Added support for TRUMP token
  • Expanded token mapping logic between chains

• Dependencies upgrades

  • Viem -> v2.23.10

Security Enhancements

• Added hard linkage support to Bitcoin/BRC-20/Runes > * routes
• Disabled Replace-By-Fee (RBF) for Bitcoin transactions by default
• Enhanced validation for bridge transactions
• Improved error handling for malformed transaction data

Bug Fixes

• Fixed reserve limitation not working on * > EVM routes
• Fixed fixed fee rate token incorrect for Stacks > Meta routes
• Resolved edge cases in cross-chain transaction validation
• Fixed various minor issues and edge cases

Other Changes

• Added cross-chain swap example code for developer reference
• Multiple Stacks contract upgrades
• Support for new fee charge model
• Upgraded viem dependency
• Improved code organization and documentation
• Enhanced type safety with improved TypeScript definitions