From 4105eecacec617dbc04cc3af3efd16c0b0f0629d Mon Sep 17 00:00:00 2001
From: Sergio Chouhy <sergio.chouhy@gmail.com>
Date: Fri, 16 Jan 2026 19:50:54 -0300
Subject: [PATCH] fix msg id in mantle tx

---
 sequencer_core/src/block_settlement_client.rs | 21 ++++++++++---------
 sequencer_core/src/lib.rs                     |  2 +-
 .../configs/debug/sequencer_config.json       |  2 +-
 3 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/sequencer_core/src/block_settlement_client.rs b/sequencer_core/src/block_settlement_client.rs
index 1964f37f..68a95dd3 100644
--- a/sequencer_core/src/block_settlement_client.rs
+++ b/sequencer_core/src/block_settlement_client.rs
@@ -18,6 +18,7 @@ pub struct BlockSettlementClient {
     bedrock_client: BedrockClient,
     bedrock_signing_key: Ed25519Key,
     bedrock_channel_id: ChannelId,
+    last_message_id: MsgId,
 }
 
 impl BlockSettlementClient {
@@ -34,11 +35,12 @@ impl BlockSettlementClient {
             bedrock_client,
             bedrock_signing_key,
             bedrock_channel_id,
+            last_message_id: MsgId::from([0; 32]),
         }
     }
 
     /// Create and sign a transaction for inscribing data
-    pub fn create_inscribe_tx(&self, data: Vec<u8>, parent: MsgId) -> SignedMantleTx {
+    pub fn create_inscribe_tx(&self, data: Vec<u8>) -> SignedMantleTx {
         let verifying_key_bytes = self.bedrock_signing_key.public_key().to_bytes();
         let verifying_key =
             Ed25519PublicKey::from_bytes(&verifying_key_bytes).expect("valid ed25519 public key");
@@ -46,7 +48,7 @@ impl BlockSettlementClient {
         let inscribe_op = InscriptionOp {
             channel_id: self.bedrock_channel_id,
             inscription: data,
-            parent,
+            parent: self.last_message_id,
             signer: verifying_key,
         };
 
@@ -75,15 +77,9 @@ impl BlockSettlementClient {
     }
 
     /// Post a transaction to the node and wait for inclusion
-    pub async fn post_and_wait(&self, block_data: &HashableBlockData) -> Result<u64> {
-        let msg_id: MsgId = {
-            let mut this = [0; 32];
-            this[0..8].copy_from_slice(&block_data.block_id.to_le_bytes());
-            this.into()
-        };
-
+    pub async fn post_and_wait(&mut self, block_data: &HashableBlockData) -> Result<u64> {
         let inscription_data = borsh::to_vec(&block_data)?;
-        let tx = self.create_inscribe_tx(inscription_data, msg_id);
+        let tx = self.create_inscribe_tx(inscription_data);
 
         // Post the transaction
         self.bedrock_client
@@ -91,6 +87,11 @@ impl BlockSettlementClient {
             .post_transaction(self.bedrock_node_url.clone(), tx.clone())
             .await?;
 
+        match tx.mantle_tx.ops.first() {
+            Some(Op::ChannelInscribe(inscribe)) => self.last_message_id = inscribe.id(),
+            _ => {}
+        }
+
         Ok(block_data.block_id)
     }
 }
diff --git a/sequencer_core/src/lib.rs b/sequencer_core/src/lib.rs
index 52b389f0..561f5ef6 100644
--- a/sequencer_core/src/lib.rs
+++ b/sequencer_core/src/lib.rs
@@ -148,7 +148,7 @@ impl SequencerCore {
     pub async fn produce_new_block_and_post_to_settlement_layer(&mut self) -> Result<u64> {
         let block_data = self.produce_new_block_with_mempool_transactions()?;
 
-        if let Some(block_settlement) = &self.block_settlement_client {
+        if let Some(block_settlement) = self.block_settlement_client.as_mut() {
             block_settlement.post_and_wait(&block_data).await?;
             log::info!("Posted block data to Bedrock");
         }
diff --git a/sequencer_runner/configs/debug/sequencer_config.json b/sequencer_runner/configs/debug/sequencer_config.json
index ab65ea70..ad43ba65 100644
--- a/sequencer_runner/configs/debug/sequencer_config.json
+++ b/sequencer_runner/configs/debug/sequencer_config.json
@@ -157,6 +157,6 @@
     ],
     "bedrock_config": {
         "channel_id": [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],
-        "node_url": "http://localhost:45403"
+        "node_url": "http://localhost:8080"
     }
 }