diff --git a/elf/riscv32im-succinct-zkvm-elf b/elf/riscv32im-succinct-zkvm-elf
index f38ed95..ec0f517 100755
Binary files a/elf/riscv32im-succinct-zkvm-elf and b/elf/riscv32im-succinct-zkvm-elf differ
diff --git a/program/src/main.rs b/program/src/main.rs
index 811e391..6b6b2e9 100644
--- a/program/src/main.rs
+++ b/program/src/main.rs
@@ -34,8 +34,8 @@ pub fn main() {
             let mut memorizer = sp1_zkvm::io::read::<Memorizer>();
         } else {
             println!("Hello, world! from non zkvm");
-            let rpc_url: String = env::var("RPC_URL").expect("RPC_URL not set");
-            let mut memorizer = Memorizer::new(Some(Url::from_str(&rpc_url).unwrap()));
+            // let rpc_url: String = env::var("RPC_URL").expect("RPC_URL not set");
+            let mut memorizer = Memorizer::new(Some(Url::from_str("https://sepolia.ethereum.iosis.tech/").unwrap()));
         }
     }
 
diff --git a/program/src/memorizer/mod.rs b/program/src/memorizer/mod.rs
index a602d83..ffab980 100644
--- a/program/src/memorizer/mod.rs
+++ b/program/src/memorizer/mod.rs
@@ -40,10 +40,10 @@ impl Memorizer {
 
 #[cfg(test)]
 mod tests {
-    use alloy_primitives::B256;
+    use alloy_primitives::{Bytes, B256};
     use std::fs;
     use tempdir::TempDir;
-    use values::HeaderMemorizerValue;
+    use values::{HeaderMemorizerValue, TransactionMemorizerValue};
 
     use super::*;
 
@@ -58,6 +58,16 @@ mod tests {
             B256::ZERO,
             MemorizerValue::Header(HeaderMemorizerValue::default()),
         );
+        let raw_tx = alloy_primitives::hex::decode("02f86f0102843b9aca0085029e7822d68298f094d9e1459a7a482635700cbc20bbaf52d495ab9c9680841b55ba3ac080a0c199674fcb29f353693dd779c017823b954b3c69dffa3cd6b2a6ff7888798039a028ca912de909e7e6cdef9cdcaf24c54dd8c1032946dfa1d85c206b32a9064fe8").unwrap();
+        // let res = TxEnvelope::decode(&mut raw_tx.as_slice()).unwrap();
+        original_mem.map.insert(
+            B256::ZERO,
+            MemorizerValue::Transaction(TransactionMemorizerValue {
+                transaction_encoded: Bytes::from(raw_tx),
+                tx_index: 0,
+                proof: Default::default(),
+            }),
+        );
 
         fs::write(&path, original_mem.as_bytes().unwrap()).unwrap();
 
diff --git a/program/src/memorizer/transaction/online.rs b/program/src/memorizer/transaction/online.rs
index 18b6003..167fd9b 100644
--- a/program/src/memorizer/transaction/online.rs
+++ b/program/src/memorizer/transaction/online.rs
@@ -1,4 +1,5 @@
 use alloy_consensus::TxEnvelope;
+use alloy_rlp::Encodable;
 use hdp_lib::transaction::{TransactionClient, TransactionResponse};
 use tokio::runtime::Runtime;
 
@@ -22,11 +23,13 @@ impl TransactionMemorizer for Memorizer {
         });
 
         let tx = transaction.tx.0;
+        let mut out = Vec::new();
+        tx.encode(&mut out);
 
         self.map.insert(
             key.into(),
             crate::memorizer::values::MemorizerValue::Transaction(TransactionMemorizerValue {
-                transaction: tx.clone(),
+                transaction_encoded: out.into(),
                 tx_index: transaction.tx_index,
                 proof: transaction.proof,
             }),
diff --git a/program/src/memorizer/transaction/zkvm.rs b/program/src/memorizer/transaction/zkvm.rs
index 271d935..ea5d672 100644
--- a/program/src/memorizer/transaction/zkvm.rs
+++ b/program/src/memorizer/transaction/zkvm.rs
@@ -3,6 +3,7 @@ use crate::memorizer::{
     keys::HeaderKey, keys::MemorizerKey, keys::TransactionKey, values::MemorizerValue, Memorizer,
 };
 use alloy_consensus::TxEnvelope;
+use alloy_rlp::Decodable;
 use hdp_lib::mpt::Mpt;
 use std::error::Error;
 
@@ -23,7 +24,8 @@ impl TransactionMemorizer for Memorizer {
                 println!("cycle-tracker-start: mpt");
                 mpt.verify(tx_value.tx_index, tx_value.proof.clone());
                 println!("cycle-tracker-end: mpt");
-                Ok(tx_value.transaction.clone())
+                let tx_encoded = tx_value.transaction_encoded.clone();
+                Ok(TxEnvelope::decode(&mut tx_encoded.as_ref()).unwrap())
             } else {
                 Err("Transaction not found".into())
             }
diff --git a/program/src/memorizer/values.rs b/program/src/memorizer/values.rs
index d4b3295..47957a4 100644
--- a/program/src/memorizer/values.rs
+++ b/program/src/memorizer/values.rs
@@ -1,4 +1,4 @@
-use alloy_consensus::{serde_bincode_compat, TxEnvelope};
+use alloy_consensus::serde_bincode_compat;
 use alloy_consensus::{Account, Header};
 use alloy_primitives::{Bytes, B256, U256};
 use serde::{Deserialize, Serialize};
@@ -30,7 +30,7 @@ pub struct StorageMemorizerValue {
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct TransactionMemorizerValue {
-    pub transaction: TxEnvelope,
+    pub transaction_encoded: Bytes,
     pub tx_index: u64,
     pub proof: Vec<Bytes>,
 }