diff --git a/README.md b/README.md
index ab9bb82..eb86f1d 100644
--- a/README.md
+++ b/README.md
@@ -372,6 +372,16 @@ The current `stacks` predicates supports the following `if_this` constructs:
     }
 }
 
+// Get any stacks block matching constraints
+// `block_height` mandatory argument admits:
+//  - `equals`, `higher_than`, `lower_than`, `between`: integer type.
+{
+    "if_this": {
+        "scope": "block_height",
+        "higher_than": 10000
+    }
+}
+
 // Get any transaction related to a given fungible token asset identifier
 // `asset-identifier` mandatory argument admits:
 //  - string type, fully qualifying the asset identifier to observe. example: `ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.cbtc-sip10::cbtc`
diff --git a/components/chainhook-cli/src/cli/mod.rs b/components/chainhook-cli/src/cli/mod.rs
index 0f0f304..801567b 100644
--- a/components/chainhook-cli/src/cli/mod.rs
+++ b/components/chainhook-cli/src/cli/mod.rs
@@ -7,7 +7,7 @@ use crate::scan::stacks::scan_stacks_chain_with_predicate;
 use chainhook_event_observer::chainhooks::types::ChainhookFullSpecification;
 use chainhook_event_observer::indexer::ordinals::db::{
     build_bitcoin_traversal_local_storage, open_readonly_ordinals_db_conn,
-    retrieve_satoshi_point_using_local_storage,
+    retrieve_satoshi_point_using_local_storage, open_readwrite_ordinals_db_conn, initialize_ordinal_state_storage,
 };
 use chainhook_event_observer::indexer::ordinals::ord::height::Height;
 use chainhook_event_observer::observer::BitcoinConfig;
@@ -294,8 +294,9 @@ async fn handle_command(opts: Opts, ctx: Context) -> Result<(), String> {
                     index: cmd.block_height,
                     hash: "".into(),
                 };
-                let storage_conn =
-                    open_readonly_ordinals_db_conn(&config.expected_cache_path()).unwrap();
+
+                let storage_conn = open_readonly_ordinals_db_conn(&config.expected_cache_path(), &ctx).unwrap();
+
                 let (block_height, offset) = retrieve_satoshi_point_using_local_storage(
                     &storage_conn,
                     &block_identifier,
@@ -318,9 +319,11 @@ async fn handle_command(opts: Opts, ctx: Context) -> Result<(), String> {
                     rpc_url: config.network.bitcoin_node_rpc_url.clone(),
                 };
 
+                let storage_conn = initialize_ordinal_state_storage(&config.expected_cache_path(), &ctx);
+
                 let _ = build_bitcoin_traversal_local_storage(
                     &bitcoin_config,
-                    &config.expected_cache_path(),
+                    &storage_conn,
                     cmd.start_block,
                     cmd.end_block,
                     &ctx,
diff --git a/components/chainhook-cli/src/scan/bitcoin.rs b/components/chainhook-cli/src/scan/bitcoin.rs
index 6551ec0..01cec96 100644
--- a/components/chainhook-cli/src/scan/bitcoin.rs
+++ b/components/chainhook-cli/src/scan/bitcoin.rs
@@ -13,9 +13,8 @@ use chainhook_event_observer::indexer::bitcoin::{
     retrieve_block_hash, retrieve_full_block_breakdown_with_retry,
 };
 use chainhook_event_observer::indexer::ordinals::db::{
-    get_default_ordinals_db_file_path, initialize_ordinal_state_storage,
-    open_readonly_ordinals_db_conn, retrieve_satoshi_point_using_local_storage,
-    write_compacted_block_to_index, CompactedBlock,
+    initialize_ordinal_state_storage, open_readonly_ordinals_db_conn,
+    retrieve_satoshi_point_using_local_storage, write_compacted_block_to_index, CompactedBlock,
 };
 use chainhook_event_observer::indexer::ordinals::ord::indexing::entry::Entry;
 use chainhook_event_observer::indexer::ordinals::ord::indexing::{
@@ -193,7 +192,8 @@ pub async fn scan_bitcoin_chain_with_predicate(
                     ctx_.expect_logger(),
                     "Retrieving satoshi point for {}", transaction.transaction_identifier.hash
                 );
-                let storage_conn = open_readonly_ordinals_db_conn(&cache_path).unwrap();
+
+                let storage_conn = open_readonly_ordinals_db_conn(&cache_path, &ctx_).unwrap();
                 let res = retrieve_satoshi_point_using_local_storage(
                     &storage_conn,
                     &block_identifier,
@@ -237,10 +237,9 @@ pub async fn scan_bitcoin_chain_with_predicate(
         .expect("unable to detach thread");
 
     let ctx_ = ctx.clone();
-    let db_file = get_default_ordinals_db_file_path(&config.expected_cache_path());
+    let conn = initialize_ordinal_state_storage(&config.expected_cache_path(), &ctx_);
     let handle_3 = hiro_system_kit::thread_named("Ordinal ingestion")
         .spawn(move || {
-            let conn = initialize_ordinal_state_storage(&db_file, &ctx_);
             while let Ok(Some((height, compacted_block))) = cache_block_rx.recv() {
                 info!(ctx_.expect_logger(), "Caching block #{height}");
                 write_compacted_block_to_index(height, &compacted_block, &conn, &ctx_);
diff --git a/components/chainhook-event-observer/src/chainhooks/bitcoin/mod.rs b/components/chainhook-event-observer/src/chainhooks/bitcoin/mod.rs
index 00026a1..2280f77 100644
--- a/components/chainhook-event-observer/src/chainhooks/bitcoin/mod.rs
+++ b/components/chainhook-event-observer/src/chainhooks/bitcoin/mod.rs
@@ -406,6 +406,16 @@ impl BitcoinPredicateType {
                 }
                 false
             }
+            BitcoinPredicateType::Protocol(Protocols::Ordinal(
+                OrdinalOperations::InscriptionTransfered,
+            )) => {
+                for op in tx.metadata.ordinal_operations.iter() {
+                    if let OrdinalOperation::InscriptionTransfered(_) = op {
+                        return true;
+                    }
+                }
+                false
+            }
         }
     }
 }
diff --git a/components/chainhook-event-observer/src/chainhooks/types.rs b/components/chainhook-event-observer/src/chainhooks/types.rs
index adc79e9..bcd85a1 100644
--- a/components/chainhook-event-observer/src/chainhooks/types.rs
+++ b/components/chainhook-event-observer/src/chainhooks/types.rs
@@ -516,6 +516,7 @@ pub enum StacksOperations {
 #[serde(rename_all = "snake_case")]
 pub enum OrdinalOperations {
     InscriptionRevealed,
+    InscriptionTransfered,
 }
 
 pub fn get_stacks_canonical_magic_bytes(network: &BitcoinNetwork) -> [u8; 2] {
diff --git a/components/chainhook-event-observer/src/indexer/ordinals/db/mod.rs b/components/chainhook-event-observer/src/indexer/ordinals/db/mod.rs
index 99523e0..e65ba69 100644
--- a/components/chainhook-event-observer/src/indexer/ordinals/db/mod.rs
+++ b/components/chainhook-event-observer/src/indexer/ordinals/db/mod.rs
@@ -1,6 +1,8 @@
 use std::{path::PathBuf, time::Duration};
 
-use chainhook_types::{BlockIdentifier, OrdinalInscriptionRevealData, TransactionIdentifier};
+use chainhook_types::{
+    BitcoinBlockData, BlockIdentifier, OrdinalInscriptionRevealData, TransactionIdentifier,
+};
 use hiro_system_kit::slog;
 use rand::RngCore;
 use rusqlite::{Connection, OpenFlags, ToSql};
@@ -14,15 +16,26 @@ use crate::{
     utils::Context,
 };
 
-pub fn get_default_ordinals_db_file_path(base_dir: &PathBuf) -> PathBuf {
+fn get_default_ordinals_db_file_path(base_dir: &PathBuf) -> PathBuf {
     let mut destination_path = base_dir.clone();
-    destination_path.push("bitcoin_block_traversal-readonly.sqlite");
+    destination_path.push("bitcoin_block_traversal.sqlite");
     destination_path
 }
 
-pub fn open_readonly_ordinals_db_conn(base_dir: &PathBuf) -> Result<Connection, String> {
+pub fn open_readonly_ordinals_db_conn(
+    base_dir: &PathBuf,
+    ctx: &Context,
+) -> Result<Connection, String> {
     let path = get_default_ordinals_db_file_path(&base_dir);
-    let conn = open_existing_readonly_db(&path);
+    let conn = open_existing_readonly_db(&path, ctx);
+    Ok(conn)
+}
+
+pub fn open_readwrite_ordinals_db_conn(
+    base_dir: &PathBuf,
+    ctx: &Context,
+) -> Result<Connection, String> {
+    let conn = create_or_open_readwrite_db(&base_dir, ctx);
     Ok(conn)
 }
 
@@ -65,12 +78,13 @@ pub fn initialize_ordinal_state_storage(path: &PathBuf, ctx: &Context) -> Connec
     conn
 }
 
-fn create_or_open_readwrite_db(path: &PathBuf, ctx: &Context) -> Connection {
-    let open_flags = match std::fs::metadata(path) {
+fn create_or_open_readwrite_db(cache_path: &PathBuf, ctx: &Context) -> Connection {
+    let path = get_default_ordinals_db_file_path(&cache_path);
+    let open_flags = match std::fs::metadata(&path) {
         Err(e) => {
             if e.kind() == std::io::ErrorKind::NotFound {
                 // need to create
-                if let Some(dirp) = PathBuf::from(path).parent() {
+                if let Some(dirp) = PathBuf::from(&path).parent() {
                     std::fs::create_dir_all(dirp).unwrap_or_else(|e| {
                         ctx.try_log(|logger| slog::error!(logger, "{}", e.to_string()));
                     });
@@ -86,7 +100,15 @@ fn create_or_open_readwrite_db(path: &PathBuf, ctx: &Context) -> Connection {
         }
     };
 
-    let conn = Connection::open_with_flags(path, open_flags).unwrap();
+    let conn = loop {
+        match Connection::open_with_flags(&path, open_flags) {
+            Ok(conn) => break conn,
+            Err(e) => {
+                ctx.try_log(|logger| slog::error!(logger, "{}", e.to_string()));
+            }
+        };
+        std::thread::sleep(std::time::Duration::from_secs(1));
+    };
     // db.profile(Some(trace_profile));
     // db.busy_handler(Some(tx_busy_handler))?;
     conn.pragma_update(None, "journal_mode", &"WAL").unwrap();
@@ -94,7 +116,7 @@ fn create_or_open_readwrite_db(path: &PathBuf, ctx: &Context) -> Connection {
     conn
 }
 
-fn open_existing_readonly_db(path: &PathBuf) -> Connection {
+fn open_existing_readonly_db(path: &PathBuf, ctx: &Context) -> Connection {
     let open_flags = match std::fs::metadata(path) {
         Err(e) => {
             if e.kind() == std::io::ErrorKind::NotFound {
@@ -109,8 +131,16 @@ fn open_existing_readonly_db(path: &PathBuf) -> Connection {
         }
     };
 
-    let conn = Connection::open_with_flags(path, open_flags).unwrap();
-    conn
+    let conn = loop {
+        match Connection::open_with_flags(path, open_flags) {
+            Ok(conn) => break conn,
+            Err(e) => {
+                ctx.try_log(|logger| slog::error!(logger, "{}", e.to_string()));
+            }
+        };
+        std::thread::sleep(std::time::Duration::from_secs(1));
+    };
+    return conn;
 }
 
 #[derive(Debug, Serialize, Deserialize)]
@@ -155,6 +185,39 @@ impl CompactedBlock {
         CompactedBlock(((coinbase_txid, coinbase_value), txs))
     }
 
+    pub fn from_standardized_block(block: &BitcoinBlockData) -> CompactedBlock {
+        let mut txs = vec![];
+        let mut coinbase_value = 0;
+        let coinbase_txid = {
+            let txid =
+                hex::decode(&block.transactions[0].transaction_identifier.hash[2..]).unwrap();
+            [txid[0], txid[1], txid[2], txid[3]]
+        };
+        for coinbase_output in block.transactions[0].metadata.outputs.iter() {
+            coinbase_value += coinbase_output.value;
+        }
+        for tx in block.transactions.iter().skip(1) {
+            let mut inputs = vec![];
+            for input in tx.metadata.inputs.iter() {
+                let txin = hex::decode(&input.previous_output.txid[2..]).unwrap();
+
+                inputs.push((
+                    [txin[0], txin[1], txin[2], txin[3]],
+                    input.previous_output.block_height as u32,
+                    input.previous_output.vout as u16,
+                    input.previous_output.value,
+                ));
+            }
+            let mut outputs = vec![];
+            for output in tx.metadata.outputs.iter() {
+                outputs.push(output.value);
+            }
+            let txid = hex::decode(&tx.transaction_identifier.hash[2..]).unwrap();
+            txs.push(([txid[0], txid[1], txid[2], txid[3]], inputs, outputs));
+        }
+        CompactedBlock(((coinbase_txid, coinbase_value), txs))
+    }
+
     pub fn from_hex_bytes(bytes: &str) -> CompactedBlock {
         let bytes = hex::decode(&bytes).unwrap();
         let value = ciborium::de::from_reader(&bytes[..]).unwrap();
@@ -327,7 +390,7 @@ pub fn write_compacted_block_to_index(
 
 pub async fn build_bitcoin_traversal_local_storage(
     bitcoin_config: &BitcoinConfig,
-    cache_path: &PathBuf,
+    storage_conn: &Connection,
     start_block: u64,
     end_block: u64,
     ctx: &Context,
@@ -351,14 +414,12 @@ pub async fn build_bitcoin_traversal_local_storage(
                 let future = retrieve_block_hash(&config, &block_height);
                 match hiro_system_kit::nestable_block_on(future) {
                     Ok(block_hash) => {
-                        err_count = 0;
-                        block_hash_tx.send(Some((block_cursor, block_hash)));
+                        let _ = block_hash_tx.send(Some((block_cursor, block_hash)));
                         break;
                     }
                     Err(e) => {
                         err_count += 1;
                         let delay = (err_count + (rng.next_u64() % 3)) * 1000;
-                        println!("retry hash:fetch in {delay}");
                         std::thread::sleep(std::time::Duration::from_millis(delay));
                     }
                 }
@@ -366,47 +427,55 @@ pub async fn build_bitcoin_traversal_local_storage(
         });
     }
 
-    let db_file = get_default_ordinals_db_file_path(&cache_path);
     let bitcoin_config = bitcoin_config.clone();
     let moved_ctx = ctx.clone();
-    let handle = hiro_system_kit::thread_named("Block data retrieval").spawn(move || {
+    let block_data_tx_moved = block_data_tx.clone();
+    let handle_1 = hiro_system_kit::thread_named("Block data retrieval").spawn(move || {
         while let Ok(Some((block_height, block_hash))) = block_hash_rx.recv() {
-            println!("fetch {block_height}:{block_hash}");
             let moved_bitcoin_config = bitcoin_config.clone();
-            let block_data_tx = block_data_tx.clone();
+            let block_data_tx = block_data_tx_moved.clone();
             let moved_ctx = moved_ctx.clone();
             retrieve_block_data_pool.execute(move || {
+                moved_ctx.try_log(|logger| slog::info!(logger, "Fetching block #{block_height}"));
                 let future = retrieve_full_block_breakdown_with_retry(
                     &moved_bitcoin_config,
                     &block_hash,
                     &moved_ctx,
                 );
                 let block_data = hiro_system_kit::nestable_block_on(future).unwrap();
-                block_data_tx.send(Some(block_data));
+                let _ = block_data_tx.send(Some(block_data));
             });
-            retrieve_block_data_pool.join()
+            let res = retrieve_block_data_pool.join();
+            res
         }
-    });
+    }).expect("unable to spawn thread");
 
-    let handle = hiro_system_kit::thread_named("Block data compression").spawn(move || {
+    let handle_2 = hiro_system_kit::thread_named("Block data compression").spawn(move || {
         while let Ok(Some(block_data)) = block_data_rx.recv() {
-            println!("store {}:{}", block_data.height, block_data.hash);
-            let block_compressed_tx = block_compressed_tx.clone();
+            let block_compressed_tx_moved = block_compressed_tx.clone();
             compress_block_data_pool.execute(move || {
                 let compressed_block = CompactedBlock::from_full_block(&block_data);
-                block_compressed_tx.send(Some((block_data.height as u32, compressed_block)));
+                let _ = block_compressed_tx_moved
+                    .send(Some((block_data.height as u32, compressed_block)));
             });
 
-            compress_block_data_pool.join()
+            let res = compress_block_data_pool.join();
+            // let _ = block_compressed_tx.send(None);
+            res
         }
-    });
-
-    let conn = initialize_ordinal_state_storage(&db_file, &ctx);
+    }).expect("unable to spawn thread");
 
+    let mut blocks_stored = 0;
     while let Ok(Some((block_height, compacted_block))) = block_compressed_rx.recv() {
-        ctx.try_log(|logger| slog::debug!(logger, "Storing block #{block_height}"));
-
-        write_compacted_block_to_index(block_height, &compacted_block, &conn, &ctx);
+        ctx.try_log(|logger| slog::info!(logger, "Storing block #{block_height}"));
+        write_compacted_block_to_index(block_height, &compacted_block, &storage_conn, &ctx);
+        blocks_stored+= 1;
+        if blocks_stored == end_block - start_block {
+            let _ = block_data_tx.send(None);
+            let _ = block_hash_tx.send(None);
+            ctx.try_log(|logger| slog::info!(logger, "Local ordinals storage successfully seeded with #{blocks_stored} blocks"));
+            return Ok(())
+        }
     }
 
     retrieve_block_hash_pool.join();
@@ -429,7 +498,12 @@ pub fn retrieve_satoshi_point_using_local_storage(
     let mut tx_cursor = (txid, 0);
 
     loop {
-        let res = retrieve_compacted_block_from_index(ordinal_block_number, &storage_conn).unwrap();
+        let res = match retrieve_compacted_block_from_index(ordinal_block_number, &storage_conn) {
+            Some(res) => res,
+            None => {
+                return Err(format!("unable to retrieve block ##{ordinal_block_number}"));
+            }
+        };
 
         ctx.try_log(|logger| {
             slog::debug!(
@@ -527,11 +601,3 @@ pub fn retrieve_satoshi_point_using_local_storage(
     Ok((ordinal_block_number.into(), ordinal_offset))
 }
 
-// pub async fn scan_bitcoin_chain_for_ordinal_inscriptions(
-//     subscribers: Vec<HookAction>,
-//     first_inscription_height: u64,
-//     config: &Config,
-//     ctx: &Context,
-// ) -> Result<(), String> {
-//     Ok(())
-// }
diff --git a/components/chainhook-event-observer/src/observer/mod.rs b/components/chainhook-event-observer/src/observer/mod.rs
index c7617f6..26dceba 100644
--- a/components/chainhook-event-observer/src/observer/mod.rs
+++ b/components/chainhook-event-observer/src/observer/mod.rs
@@ -12,9 +12,10 @@ use crate::chainhooks::types::{
 use crate::indexer::bitcoin::{retrieve_full_block_breakdown_with_retry, NewBitcoinBlock};
 use crate::indexer::ordinals::db::{
     find_inscription_with_satoshi_id, find_inscriptions_at_wached_outpoint,
-    find_last_inscription_number, get_default_ordinals_db_file_path,
-    open_readonly_ordinals_db_conn, retrieve_satoshi_point_using_local_storage,
+    find_last_inscription_number, initialize_ordinal_state_storage, open_readonly_ordinals_db_conn,
+    open_readwrite_ordinals_db_conn, retrieve_satoshi_point_using_local_storage,
     scan_existing_inscriptions_id, store_new_inscription, update_transfered_inscription,
+    write_compacted_block_to_index, CompactedBlock,
 };
 use crate::indexer::ordinals::ord::height::Height;
 use crate::indexer::ordinals::ord::{
@@ -478,7 +479,9 @@ pub async fn start_observer_commands_handler(
     let event_handlers = config.event_handlers.clone();
     let mut chainhooks_lookup: HashMap<String, ApiKey> = HashMap::new();
     let networks = (&config.bitcoin_network, &config.stacks_network);
-    let ordinals_db_conn = open_readonly_ordinals_db_conn(&config.get_cache_path_buf())?;
+    // {
+    //     let _ = initialize_ordinal_state_storage(&config.get_cache_path_buf(), &ctx);
+    // }
     loop {
         let command = match observer_commands_rx.recv() {
             Ok(cmd) => cmd,
@@ -506,6 +509,9 @@ pub async fn start_observer_commands_handler(
             }
             // ObserverCommand::ProcessBitcoinBlock?
             ObserverCommand::PropagateBitcoinChainEvent(mut chain_event) => {
+                let ordinals_db_conn =
+                    open_readonly_ordinals_db_conn(&config.get_cache_path_buf(), &ctx)?;
+
                 ctx.try_log(|logger| {
                     slog::info!(logger, "Handling PropagateBitcoinChainEvent command")
                 });
@@ -515,7 +521,8 @@ pub async fn start_observer_commands_handler(
                     BitcoinChainEvent::ChainUpdatedWithBlocks(ref mut new_blocks) => {
                         // Look for inscription transfered
                         let storage_conn =
-                            open_readonly_ordinals_db_conn(&config.get_cache_path_buf()).unwrap(); // TODO(lgalabru)
+                            open_readonly_ordinals_db_conn(&config.get_cache_path_buf(), &ctx)
+                                .unwrap(); // TODO(lgalabru)
 
                         for new_block in new_blocks.new_blocks.iter_mut() {
                             let mut coinbase_offset = 0;
@@ -579,8 +586,9 @@ pub async fn start_observer_commands_handler(
 
                                             {
                                                 let storage_rw_conn =
-                                                    open_readonly_ordinals_db_conn(
+                                                    open_readwrite_ordinals_db_conn(
                                                         &config.get_cache_path_buf(),
+                                                        &ctx,
                                                     )
                                                     .unwrap(); // TODO(lgalabru)
                                                 store_new_inscription(
@@ -684,8 +692,9 @@ pub async fn start_observer_commands_handler(
 
                                         // Update watched outpoint
                                         {
-                                            let storage_rw_conn = open_readonly_ordinals_db_conn(
+                                            let storage_rw_conn = open_readwrite_ordinals_db_conn(
                                                 &config.get_cache_path_buf(),
+                                                &ctx,
                                             )
                                             .unwrap(); // TODO(lgalabru)
                                             update_transfered_inscription(
@@ -723,8 +732,30 @@ pub async fn start_observer_commands_handler(
                                 coinbase_offset += new_tx.metadata.fee;
                             }
 
-                            // TODO:
-                            // - persist compacted block in table blocks
+                            // Persist compacted block in table blocks
+                            {
+                                ctx.try_log(|logger| {
+                                    slog::info!(
+                                        logger,
+                                        "Caching Bitcoin block #{} for further traversals",
+                                        new_block.block_identifier.index
+                                    )
+                                });
+        
+                                let compacted_block =
+                                    CompactedBlock::from_standardized_block(&new_block);
+                                let storage_rw_conn = open_readwrite_ordinals_db_conn(
+                                    &config.get_cache_path_buf(),
+                                    &ctx,
+                                )
+                                .unwrap(); // TODO(lgalabru)
+                                write_compacted_block_to_index(
+                                    new_block.block_identifier.index as u32,
+                                    &compacted_block,
+                                    &storage_rw_conn,
+                                    &ctx,
+                                );
+                            }
                         }
                     }
                     BitcoinChainEvent::ChainUpdatedWithReorg(ref mut reorg) => {