diff --git a/Cargo.lock b/Cargo.lock
index 5bf24e7..311704e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1078,6 +1078,7 @@ name = "firefly-balius"
 version = "0.1.0"
 dependencies = [
  "balius-sdk",
+ "serde",
 ]
 
 [[package]]
diff --git a/firefly-balius/Cargo.toml b/firefly-balius/Cargo.toml
index f02b513..7682241 100644
--- a/firefly-balius/Cargo.toml
+++ b/firefly-balius/Cargo.toml
@@ -6,3 +6,4 @@ repository = "https://github.com/blockfrost/firefly-cardano"
 
 [dependencies]
 balius-sdk = { git = "https://github.com/txpipe/balius.git", rev = "a72601f" }
+serde = { version = "1", features = ["derive"] }
diff --git a/firefly-balius/src/lib.rs b/firefly-balius/src/lib.rs
index a85c8e4..213d688 100644
--- a/firefly-balius/src/lib.rs
+++ b/firefly-balius/src/lib.rs
@@ -1,6 +1,7 @@
 use balius_sdk::txbuilder::{
     primitives::TransactionInput, BuildContext, BuildError, InputExpr, UtxoSource,
 };
+use serde::Deserialize;
 
 pub struct CoinSelectionInput(pub UtxoSource, pub u64);
 
@@ -43,3 +44,9 @@ impl InputExpr for CoinSelectionInput {
         }
     }
 }
+
+#[derive(Deserialize)]
+pub struct SubmittedTx {
+    pub method: String,
+    pub hash: String,
+}
diff --git a/firefly-cardanoconnect/src/contracts.rs b/firefly-cardanoconnect/src/contracts.rs
index 6f1cf13..86c0fe5 100644
--- a/firefly-cardanoconnect/src/contracts.rs
+++ b/firefly-cardanoconnect/src/contracts.rs
@@ -99,6 +99,17 @@ impl ContractManager {
         }
     }
 
+    pub async fn handle_submit(&self, contract: &str, method: &str, tx_id: &str) {
+        let params = serde_json::json!({
+            "method": method,
+            "hash": tx_id,
+        });
+        let runtime = self.get_contract_runtime(contract).await;
+        let mut lock = runtime.lock().await;
+
+        let _: Result<_, _> = lock.invoke("__tx_submitted", params).await;
+    }
+
     pub async fn listen(&self, listener: &Listener) -> ContractListener {
         let contracts = find_contract_names(&listener.filters);
         let mut runtimes = vec![];
diff --git a/firefly-cardanoconnect/src/operations/manager.rs b/firefly-cardanoconnect/src/operations/manager.rs
index 95e1773..66c12e5 100644
--- a/firefly-cardanoconnect/src/operations/manager.rs
+++ b/firefly-cardanoconnect/src/operations/manager.rs
@@ -83,7 +83,9 @@ impl OperationsManager {
             }
         };
         if let Some(tx) = value {
-            op.tx_id = Some(self.submit_transaction(from, tx).await?);
+            let tx_id = self.submit_transaction(from, tx).await?;
+            op.tx_id = Some(tx_id.clone());
+            self.contracts.handle_submit(contract, method, &tx_id).await;
         }
 
         op.status = OperationStatus::Succeeded;
diff --git a/wasm/simple-tx/Cargo.lock b/wasm/simple-tx/Cargo.lock
index c232a9a..b9295c8 100644
--- a/wasm/simple-tx/Cargo.lock
+++ b/wasm/simple-tx/Cargo.lock
@@ -302,6 +302,7 @@ name = "firefly-balius"
 version = "0.1.0"
 dependencies = [
  "balius-sdk",
+ "serde",
 ]
 
 [[package]]