diff --git a/.sourcery.yaml b/.sourcery.yaml
index aa5b73c7..ab9a4e7d 100644
--- a/.sourcery.yaml
+++ b/.sourcery.yaml
@@ -1,14 +1,14 @@
 ignore:
-    - .git
-    - venv
-    - .venv
-    - env
-    - .env
-    - .tox
-    - node_modules
-    - vendor
-    - worker-configuration.d.ts
-    - *.tmp.*
+  - .git
+  - venv
+  - .venv
+  - env
+  - .env
+  - .tox
+  - node_modules
+  - vendor
+  - worker-configuration.d.ts
+  - "*.tmp.*"
 
 rule_settings:
   enable: [default]
diff --git a/packages/btcindexer/src/btcindexer.ts b/packages/btcindexer/src/btcindexer.ts
index 1f5b13a6..eb000a21 100644
--- a/packages/btcindexer/src/btcindexer.ts
+++ b/packages/btcindexer/src/btcindexer.ts
@@ -284,10 +284,16 @@ export class Indexer implements Storage {
 
 		for (const [txId, txGroup] of groupedTxs.entries()) {
 			try {
-				const rawBlockHex = await this.blocksDB.get(txGroup.block_hash);
-				if (!rawBlockHex) continue;
-
-				const block = Block.fromHex(rawBlockHex);
+				const rawBlockBuffer = await this.blocksDB.get(txGroup.block_hash, {
+					type: "arrayBuffer",
+				});
+				if (!rawBlockBuffer) {
+					console.warn(
+						`Block data not found in KV for hash: ${txGroup.block_hash}. Skipping TX ${txId}.`,
+					);
+					continue;
+				}
+				const block = Block.fromBuffer(Buffer.from(rawBlockBuffer));
 				const merkleTree = this.constructMerkleTree(block);
 				if (!merkleTree) continue;