diff --git a/common/src/block.rs b/common/src/block.rs
index 5e256d8..64bce30 100644
--- a/common/src/block.rs
+++ b/common/src/block.rs
@@ -1,7 +1,7 @@
 use rs_merkle::Hasher;
 use std::io::{Cursor, Read};
 
-use crate::{OwnHasher, transaction::TransactionBody};
+use crate::{OwnHasher, transaction::EncodedTransaction};
 
 pub type BlockHash = [u8; 32];
 pub type BlockId = u64;
@@ -10,7 +10,6 @@ pub type TimeStamp = u64;
 #[derive(Debug, Clone)]
 pub struct BlockHeader {
     pub block_id: BlockId,
-    pub prev_block_id: BlockId,
     pub prev_block_hash: BlockHash,
     pub hash: BlockHash,
     pub timestamp: TimeStamp,
@@ -19,7 +18,7 @@ pub struct BlockHeader {
 
 #[derive(Debug, Clone)]
 pub struct BlockBody {
-    pub transactions: Vec<TransactionBody>,
+    pub transactions: Vec<EncodedTransaction>,
 }
 
 #[derive(Debug, Clone)]
@@ -31,10 +30,9 @@ pub struct Block {
 #[derive(Debug, PartialEq, Eq)]
 pub struct HashableBlockData {
     pub block_id: BlockId,
-    pub prev_block_id: BlockId,
     pub prev_block_hash: BlockHash,
     pub timestamp: TimeStamp,
-    pub transactions: Vec<TransactionBody>,
+    pub transactions: Vec<EncodedTransaction>,
 }
 
 impl HashableBlockData {
@@ -45,7 +43,6 @@ impl HashableBlockData {
         Block {
             header: BlockHeader {
                 block_id: self.block_id,
-                prev_block_id: self.prev_block_id,
                 prev_block_hash: self.prev_block_hash,
                 hash,
                 timestamp: self.timestamp,
@@ -62,7 +59,6 @@ impl From<Block> for HashableBlockData {
     fn from(value: Block) -> Self {
         Self {
             block_id: value.header.block_id,
-            prev_block_id: value.header.prev_block_id,
             prev_block_hash: value.header.prev_block_hash,
             timestamp: value.header.timestamp,
             transactions: value.body.transactions,
@@ -74,7 +70,6 @@ impl HashableBlockData {
     pub fn to_bytes(&self) -> Vec<u8> {
         let mut bytes = Vec::new();
         bytes.extend_from_slice(&self.block_id.to_le_bytes());
-        bytes.extend_from_slice(&self.prev_block_id.to_le_bytes());
         bytes.extend_from_slice(&self.prev_block_hash);
         bytes.extend_from_slice(&self.timestamp.to_le_bytes());
         let num_transactions: u32 = self.transactions.len() as u32;
@@ -94,7 +89,6 @@ impl HashableBlockData {
         let mut cursor = Cursor::new(data);
 
         let block_id = u64_from_cursor(&mut cursor);
-        let prev_block_id = u64_from_cursor(&mut cursor);
 
         let mut prev_block_hash = [0u8; 32];
         cursor.read_exact(&mut prev_block_hash).unwrap();
@@ -114,13 +108,12 @@ impl HashableBlockData {
                 tx_bytes.push(buff[0]);
             }
 
-            let tx = TransactionBody::from_bytes(tx_bytes);
+            let tx = EncodedTransaction::from_bytes(tx_bytes);
             transactions.push(tx);
         }
 
         Self {
             block_id,
-            prev_block_id,
             prev_block_hash,
             timestamp,
             transactions,
diff --git a/common/src/sequencer_client/mod.rs b/common/src/sequencer_client/mod.rs
index c6da098..126de40 100644
--- a/common/src/sequencer_client/mod.rs
+++ b/common/src/sequencer_client/mod.rs
@@ -12,7 +12,7 @@ use crate::rpc_primitives::requests::{
     GetTransactionByHashResponse,
 };
 use crate::sequencer_client::json::AccountInitialData;
-use crate::transaction::TransactionBody;
+use crate::transaction::{EncodedTransaction, NSSATransaction};
 use crate::{SequencerClientError, SequencerRpcError};
 
 pub mod json;
@@ -132,7 +132,7 @@ impl SequencerClient {
         &self,
         transaction: nssa::PublicTransaction,
     ) -> Result<SendTxResponse, SequencerClientError> {
-        let transaction = TransactionBody::from(nssa::NSSATransaction::Public(transaction));
+        let transaction = EncodedTransaction::from(NSSATransaction::Public(transaction));
 
         let tx_req = SendTxRequest {
             transaction: transaction.to_bytes(),
diff --git a/common/src/test_utils.rs b/common/src/test_utils.rs
index 7fb58d3..9d68db8 100644
--- a/common/src/test_utils.rs
+++ b/common/src/test_utils.rs
@@ -1,8 +1,6 @@
-use nssa::NSSATransaction;
-
 use crate::{
     block::{Block, HashableBlockData},
-    transaction::TransactionBody,
+    transaction::{EncodedTransaction, NSSATransaction},
 };
 
 //Helpers
@@ -19,15 +17,14 @@ pub fn sequencer_sign_key_for_testing() -> nssa::PrivateKey {
 ///
 /// `prev_hash` - hash of previous block, provide None for genesis
 ///
-/// `transactions` - vector of `AuthenticatedTransaction` objects
+/// `transactions` - vector of `EncodedTransaction` objects
 pub fn produce_dummy_block(
     id: u64,
     prev_hash: Option<[u8; 32]>,
-    transactions: Vec<TransactionBody>,
+    transactions: Vec<EncodedTransaction>,
 ) -> Block {
     let block_data = HashableBlockData {
         block_id: id,
-        prev_block_id: id.saturating_sub(1),
         prev_block_hash: prev_hash.unwrap_or_default(),
         timestamp: id * 100,
         transactions,
@@ -36,7 +33,7 @@ pub fn produce_dummy_block(
     block_data.into_block(&sequencer_sign_key_for_testing())
 }
 
-pub fn produce_dummy_empty_transaction() -> TransactionBody {
+pub fn produce_dummy_empty_transaction() -> EncodedTransaction {
     let program_id = nssa::program::Program::authenticated_transfer_program().id();
     let addresses = vec![];
     let nonces = vec![];
@@ -49,7 +46,7 @@ pub fn produce_dummy_empty_transaction() -> TransactionBody {
 
     let nssa_tx = nssa::PublicTransaction::new(message, witness_set);
 
-    TransactionBody::from(NSSATransaction::Public(nssa_tx))
+    EncodedTransaction::from(NSSATransaction::Public(nssa_tx))
 }
 
 pub fn create_transaction_native_token_transfer(
@@ -58,7 +55,7 @@ pub fn create_transaction_native_token_transfer(
     to: [u8; 32],
     balance_to_move: u128,
     signing_key: nssa::PrivateKey,
-) -> TransactionBody {
+) -> EncodedTransaction {
     let addresses = vec![nssa::Address::new(from), nssa::Address::new(to)];
     let nonces = vec![nonce];
     let program_id = nssa::program::Program::authenticated_transfer_program().id();
@@ -69,5 +66,5 @@ pub fn create_transaction_native_token_transfer(
 
     let nssa_tx = nssa::PublicTransaction::new(message, witness_set);
 
-    TransactionBody::from(NSSATransaction::Public(nssa_tx))
+    EncodedTransaction::from(NSSATransaction::Public(nssa_tx))
 }
diff --git a/common/src/transaction.rs b/common/src/transaction.rs
index 956853f..d196687 100644
--- a/common/src/transaction.rs
+++ b/common/src/transaction.rs
@@ -10,6 +10,24 @@ use elliptic_curve::{
 };
 use sha2::digest::typenum::{UInt, UTerm};
 
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum NSSATransaction {
+    Public(nssa::PublicTransaction),
+    PrivacyPreserving(nssa::PrivacyPreservingTransaction),
+}
+
+impl From<nssa::PublicTransaction> for NSSATransaction {
+    fn from(value: nssa::PublicTransaction) -> Self {
+        Self::Public(value)
+    }
+}
+
+impl From<nssa::PrivacyPreservingTransaction> for NSSATransaction {
+    fn from(value: nssa::PrivacyPreservingTransaction) -> Self {
+        Self::PrivacyPreserving(value)
+    }
+}
+
 use crate::TreeHashType;
 
 pub type CipherText = Vec<u8>;
@@ -24,20 +42,20 @@ pub enum TxKind {
 
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Eq)]
 ///General transaction object
-pub struct TransactionBody {
+pub struct EncodedTransaction {
     pub tx_kind: TxKind,
     ///Encoded blobs of data
     pub encoded_transaction_data: Vec<u8>,
 }
 
-impl From<nssa::NSSATransaction> for TransactionBody {
-    fn from(value: nssa::NSSATransaction) -> Self {
+impl From<NSSATransaction> for EncodedTransaction {
+    fn from(value: NSSATransaction) -> Self {
         match value {
-            nssa::NSSATransaction::Public(tx) => Self {
+            NSSATransaction::Public(tx) => Self {
                 tx_kind: TxKind::Public,
                 encoded_transaction_data: tx.to_bytes(),
             },
-            nssa::NSSATransaction::PrivacyPreserving(tx) => Self {
+            NSSATransaction::PrivacyPreserving(tx) => Self {
                 tx_kind: TxKind::PrivacyPreserving,
                 encoded_transaction_data: tx.to_bytes(),
             },
@@ -45,10 +63,10 @@ impl From<nssa::NSSATransaction> for TransactionBody {
     }
 }
 
-impl TryFrom<&TransactionBody> for nssa::NSSATransaction {
+impl TryFrom<&EncodedTransaction> for NSSATransaction {
     type Error = nssa::error::NssaError;
 
-    fn try_from(value: &TransactionBody) -> Result<Self, Self::Error> {
+    fn try_from(value: &EncodedTransaction) -> Result<Self, Self::Error> {
         match value.tx_kind {
             TxKind::Public => nssa::PublicTransaction::from_bytes(&value.encoded_transaction_data)
                 .map(|tx| tx.into()),
@@ -153,7 +171,7 @@ impl ActionData {
     }
 }
 
-impl TransactionBody {
+impl EncodedTransaction {
     /// Computes and returns the SHA-256 hash of the JSON-serialized representation of `self`.
     pub fn hash(&self) -> TreeHashType {
         let bytes_to_hash = self.to_bytes();
@@ -189,11 +207,11 @@ mod tests {
 
     use crate::{
         TreeHashType,
-        transaction::{TransactionBody, TxKind},
+        transaction::{EncodedTransaction, TxKind},
     };
 
-    fn test_transaction_body() -> TransactionBody {
-        TransactionBody {
+    fn test_transaction_body() -> EncodedTransaction {
+        EncodedTransaction {
             tx_kind: TxKind::Public,
             encoded_transaction_data: vec![1, 2, 3, 4],
         }
@@ -219,7 +237,7 @@ mod tests {
         let body = test_transaction_body();
 
         let body_bytes = body.to_bytes();
-        let body_new = TransactionBody::from_bytes(body_bytes);
+        let body_new = EncodedTransaction::from_bytes(body_bytes);
 
         assert_eq!(body, body_new);
     }
diff --git a/nssa/src/encoding/mod.rs b/nssa/src/encoding/mod.rs
new file mode 100644
index 0000000..5ff45e2
--- /dev/null
+++ b/nssa/src/encoding/mod.rs
@@ -0,0 +1,2 @@
+pub mod privacy_preserving_transaction;
+pub mod public_transaction;
diff --git a/nssa/src/privacy_preserving_transaction/encoding.rs b/nssa/src/encoding/privacy_preserving_transaction.rs
similarity index 98%
rename from nssa/src/privacy_preserving_transaction/encoding.rs
rename to nssa/src/encoding/privacy_preserving_transaction.rs
index ff5a269..7c49938 100644
--- a/nssa/src/privacy_preserving_transaction/encoding.rs
+++ b/nssa/src/encoding/privacy_preserving_transaction.rs
@@ -10,12 +10,12 @@ use crate::{
     Address, PrivacyPreservingTransaction, PublicKey, Signature,
     error::NssaError,
     privacy_preserving_transaction::{
-        circuit::Proof, message::EncryptedAccountData, witness_set::WitnessSet,
+        circuit::Proof,
+        message::{EncryptedAccountData, Message},
+        witness_set::WitnessSet,
     },
 };
 
-use super::message::Message;
-
 const MESSAGE_ENCODING_PREFIX_LEN: usize = 22;
 const MESSAGE_ENCODING_PREFIX: &[u8; MESSAGE_ENCODING_PREFIX_LEN] = b"\x01/NSSA/v0.1/TxMessage/";
 
diff --git a/nssa/src/public_transaction/encoding.rs b/nssa/src/encoding/public_transaction.rs
similarity index 100%
rename from nssa/src/public_transaction/encoding.rs
rename to nssa/src/encoding/public_transaction.rs
diff --git a/nssa/src/lib.rs b/nssa/src/lib.rs
index 74c58b1..643fc7a 100644
--- a/nssa/src/lib.rs
+++ b/nssa/src/lib.rs
@@ -1,4 +1,5 @@
 pub mod address;
+pub mod encoding;
 pub mod error;
 mod merkle_tree;
 mod privacy_preserving_transaction;
@@ -16,21 +17,3 @@ pub use signature::PrivateKey;
 pub use signature::PublicKey;
 pub use signature::Signature;
 pub use state::V01State;
-
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub enum NSSATransaction {
-    Public(PublicTransaction),
-    PrivacyPreserving(PrivacyPreservingTransaction),
-}
-
-impl From<PublicTransaction> for NSSATransaction {
-    fn from(value: PublicTransaction) -> Self {
-        Self::Public(value)
-    }
-}
-
-impl From<PrivacyPreservingTransaction> for NSSATransaction {
-    fn from(value: PrivacyPreservingTransaction) -> Self {
-        Self::PrivacyPreserving(value)
-    }
-}
diff --git a/nssa/src/privacy_preserving_transaction/circuit.rs b/nssa/src/privacy_preserving_transaction/circuit.rs
index 4cd4526..a8e37cf 100644
--- a/nssa/src/privacy_preserving_transaction/circuit.rs
+++ b/nssa/src/privacy_preserving_transaction/circuit.rs
@@ -14,7 +14,7 @@ use program_methods::{PRIVACY_PRESERVING_CIRCUIT_ELF, PRIVACY_PRESERVING_CIRCUIT
 
 /// Proof of the privacy preserving execution circuit
 #[derive(Debug, Clone, PartialEq, Eq)]
-pub struct Proof(Vec<u8>);
+pub struct Proof(pub(super) Vec<u8>);
 
 impl Proof {
     pub(crate) fn is_valid_for(&self, circuit_output: &PrivacyPreservingCircuitOutput) -> bool {
@@ -34,7 +34,14 @@ impl Proof {
     pub fn from_cursor(cursor: &mut Cursor<&[u8]>) -> Result<Self, NssaError> {
         let proof_len = u32_from_cursor(cursor) as usize;
         let mut proof = Vec::with_capacity(proof_len);
-        cursor.read_exact(&mut proof)?;
+
+        for _ in 0..proof_len {
+            let mut one_byte_buf = [0u8];
+
+            cursor.read_exact(&mut one_byte_buf)?;
+
+            proof.push(one_byte_buf[0]);
+        }
         Ok(Self(proof))
     }
 }
diff --git a/nssa/src/privacy_preserving_transaction/mod.rs b/nssa/src/privacy_preserving_transaction/mod.rs
index 54fc94b..c74c077 100644
--- a/nssa/src/privacy_preserving_transaction/mod.rs
+++ b/nssa/src/privacy_preserving_transaction/mod.rs
@@ -1,4 +1,3 @@
-mod encoding;
 pub mod message;
 pub mod transaction;
 pub mod witness_set;
diff --git a/nssa/src/privacy_preserving_transaction/transaction.rs b/nssa/src/privacy_preserving_transaction/transaction.rs
index 9aac54e..4ecac7f 100644
--- a/nssa/src/privacy_preserving_transaction/transaction.rs
+++ b/nssa/src/privacy_preserving_transaction/transaction.rs
@@ -167,3 +167,42 @@ fn n_unique<T: Eq + Hash>(data: &[T]) -> usize {
     let set: HashSet<&T> = data.iter().collect();
     set.len()
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::{
+        Address, PrivacyPreservingTransaction, PrivateKey, PublicKey,
+        privacy_preserving_transaction::{
+            circuit::Proof, message::tests::message_for_tests, witness_set::WitnessSet,
+        },
+    };
+
+    fn keys_for_tests() -> (PrivateKey, PrivateKey, Address, Address) {
+        let key1 = PrivateKey::try_new([1; 32]).unwrap();
+        let key2 = PrivateKey::try_new([2; 32]).unwrap();
+        let addr1 = Address::from(&PublicKey::new_from_private_key(&key1));
+        let addr2 = Address::from(&PublicKey::new_from_private_key(&key2));
+        (key1, key2, addr1, addr2)
+    }
+
+    fn proof_for_tests() -> Proof {
+        Proof(vec![1, 2, 3, 4, 5])
+    }
+
+    fn transaction_for_tests() -> PrivacyPreservingTransaction {
+        let (key1, key2, _, _) = keys_for_tests();
+
+        let message = message_for_tests();
+
+        let witness_set = WitnessSet::for_message(&message, proof_for_tests(), &[&key1, &key2]);
+        PrivacyPreservingTransaction::new(message, witness_set)
+    }
+
+    #[test]
+    fn test_privacy_preserving_transaction_encoding_bytes_roundtrip() {
+        let tx = transaction_for_tests();
+        let bytes = tx.to_bytes();
+        let tx_from_bytes = PrivacyPreservingTransaction::from_bytes(&bytes).unwrap();
+        assert_eq!(tx, tx_from_bytes);
+    }
+}
diff --git a/nssa/src/privacy_preserving_transaction/witness_set.rs b/nssa/src/privacy_preserving_transaction/witness_set.rs
index fe897ce..9fc587e 100644
--- a/nssa/src/privacy_preserving_transaction/witness_set.rs
+++ b/nssa/src/privacy_preserving_transaction/witness_set.rs
@@ -5,8 +5,8 @@ use crate::{
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct WitnessSet {
-    pub(super) signatures_and_public_keys: Vec<(Signature, PublicKey)>,
-    pub(super) proof: Proof,
+    pub(crate) signatures_and_public_keys: Vec<(Signature, PublicKey)>,
+    pub(crate) proof: Proof,
 }
 
 impl WitnessSet {
diff --git a/nssa/src/public_transaction/mod.rs b/nssa/src/public_transaction/mod.rs
index 9ae24cf..278e9df 100644
--- a/nssa/src/public_transaction/mod.rs
+++ b/nssa/src/public_transaction/mod.rs
@@ -1,4 +1,3 @@
-mod encoding;
 mod message;
 mod transaction;
 mod witness_set;
diff --git a/nssa/src/public_transaction/witness_set.rs b/nssa/src/public_transaction/witness_set.rs
index f0e5c6b..e5095ba 100644
--- a/nssa/src/public_transaction/witness_set.rs
+++ b/nssa/src/public_transaction/witness_set.rs
@@ -2,7 +2,7 @@ use crate::{PrivateKey, PublicKey, Signature, public_transaction::Message};
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct WitnessSet {
-    pub(super) signatures_and_public_keys: Vec<(Signature, PublicKey)>,
+    pub(crate) signatures_and_public_keys: Vec<(Signature, PublicKey)>,
 }
 
 impl WitnessSet {
diff --git a/sequencer_core/src/lib.rs b/sequencer_core/src/lib.rs
index 8571d36..59b787e 100644
--- a/sequencer_core/src/lib.rs
+++ b/sequencer_core/src/lib.rs
@@ -1,11 +1,14 @@
 use std::fmt::Display;
 
 use anyhow::Result;
-use common::{TreeHashType, block::HashableBlockData, transaction::TransactionBody};
+use common::{
+    TreeHashType,
+    block::HashableBlockData,
+    transaction::{EncodedTransaction, NSSATransaction},
+};
 use config::SequencerConfig;
-use log::{info, warn};
+use log::warn;
 use mempool::MemPool;
-use nssa::NSSATransaction;
 use sequencer_store::SequecerChainStore;
 use serde::{Deserialize, Serialize};
 
@@ -14,7 +17,7 @@ pub mod sequencer_store;
 
 pub struct SequencerCore {
     pub store: SequecerChainStore,
-    pub mempool: MemPool<TransactionBody>,
+    pub mempool: MemPool<EncodedTransaction>,
     pub sequencer_config: SequencerConfig,
     pub chain_height: u64,
 }
@@ -85,7 +88,7 @@ impl SequencerCore {
 
     pub fn push_tx_into_mempool_pre_check(
         &mut self,
-        transaction: TransactionBody,
+        transaction: EncodedTransaction,
     ) -> Result<(), TransactionMalformationErrorKind> {
         let transaction = NSSATransaction::try_from(&transaction).map_err(|_| {
             TransactionMalformationErrorKind::FailedToDecode {
@@ -93,8 +96,6 @@ impl SequencerCore {
             }
         })?;
 
-        info!("Transaction got {transaction:#?}");
-
         let mempool_size = self.mempool.len();
         if mempool_size >= self.sequencer_config.max_num_tx_in_block {
             return Err(TransactionMalformationErrorKind::MempoolFullForRound);
@@ -135,24 +136,23 @@ impl SequencerCore {
     pub fn produce_new_block_with_mempool_transactions(&mut self) -> Result<u64> {
         let new_block_height = self.chain_height + 1;
 
-        let transactions = self
-            .mempool
-            .pop_size(self.sequencer_config.max_num_tx_in_block);
+        let mut num_valid_transactions_in_block = 0;
+        let mut valid_transactions = vec![];
 
-        let mut nssa_transactions = vec![];
-
-        for tx in transactions {
+        while let Some(tx) = self.mempool.pop_last() {
             let nssa_transaction = NSSATransaction::try_from(&tx)
                 .map_err(|_| TransactionMalformationErrorKind::FailedToDecode { tx: tx.hash() })?;
 
-            nssa_transactions.push(nssa_transaction);
-        }
+            if let Ok(valid_tx) = self.execute_check_transaction_on_state(nssa_transaction) {
+                valid_transactions.push(valid_tx.into());
 
-        let valid_transactions: Vec<_> = nssa_transactions
-            .into_iter()
-            .filter_map(|tx| self.execute_check_transaction_on_state(tx).ok())
-            .map(Into::into)
-            .collect();
+                num_valid_transactions_in_block += 1;
+
+                if num_valid_transactions_in_block >= self.sequencer_config.max_num_tx_in_block {
+                    break;
+                }
+            }
+        }
 
         let prev_block_hash = self
             .store
@@ -165,7 +165,6 @@ impl SequencerCore {
 
         let hashable_data = HashableBlockData {
             block_id: new_block_height,
-            prev_block_id: self.chain_height,
             transactions: valid_transactions,
             prev_block_hash,
             timestamp: curr_time,
@@ -189,7 +188,7 @@ mod tests {
 
     use super::*;
 
-    fn parse_unwrap_tx_body_into_nssa_tx(tx_body: TransactionBody) -> NSSATransaction {
+    fn parse_unwrap_tx_body_into_nssa_tx(tx_body: EncodedTransaction) -> NSSATransaction {
         NSSATransaction::try_from(&tx_body)
             .map_err(|_| TransactionMalformationErrorKind::FailedToDecode { tx: tx_body.hash() })
             .unwrap()
diff --git a/sequencer_core/src/sequencer_store/block_store.rs b/sequencer_core/src/sequencer_store/block_store.rs
index 4c8f25e..42e4ec5 100644
--- a/sequencer_core/src/sequencer_store/block_store.rs
+++ b/sequencer_core/src/sequencer_store/block_store.rs
@@ -1,7 +1,7 @@
 use std::{collections::HashMap, path::Path};
 
 use anyhow::Result;
-use common::{TreeHashType, block::Block, transaction::TransactionBody};
+use common::{TreeHashType, block::Block, transaction::EncodedTransaction};
 use storage::RocksDBIO;
 
 pub struct SequecerBlockStore {
@@ -57,7 +57,7 @@ impl SequecerBlockStore {
     }
 
     /// Returns the transaction corresponding to the given hash, if it exists in the blockchain.
-    pub fn get_transaction_by_hash(&self, hash: TreeHashType) -> Option<TransactionBody> {
+    pub fn get_transaction_by_hash(&self, hash: TreeHashType) -> Option<EncodedTransaction> {
         let block_id = self.tx_hash_to_block_map.get(&hash);
         let block = block_id.map(|&id| self.get_block_at_id(id));
         if let Some(Ok(block)) = block {
@@ -96,7 +96,6 @@ mod tests {
 
         let genesis_block_hashable_data = HashableBlockData {
             block_id: 0,
-            prev_block_id: 0,
             prev_block_hash: [0; 32],
             timestamp: 0,
             transactions: vec![],
diff --git a/sequencer_core/src/sequencer_store/mod.rs b/sequencer_core/src/sequencer_store/mod.rs
index 5a4bcd1..366c9e2 100644
--- a/sequencer_core/src/sequencer_store/mod.rs
+++ b/sequencer_core/src/sequencer_store/mod.rs
@@ -41,7 +41,6 @@ impl SequecerChainStore {
 
         let hashable_data = HashableBlockData {
             block_id: genesis_id,
-            prev_block_id: genesis_id.saturating_sub(1),
             transactions: vec![],
             prev_block_hash,
             timestamp: curr_time,
diff --git a/sequencer_rpc/src/process.rs b/sequencer_rpc/src/process.rs
index a9f828e..9123bcb 100644
--- a/sequencer_rpc/src/process.rs
+++ b/sequencer_rpc/src/process.rs
@@ -18,7 +18,7 @@ use common::{
             GetTransactionByHashResponse,
         },
     },
-    transaction::TransactionBody,
+    transaction::EncodedTransaction,
 };
 
 use common::rpc_primitives::requests::{
@@ -75,7 +75,7 @@ impl JsonHandler {
 
     async fn process_send_tx(&self, request: Request) -> Result<Value, RpcErr> {
         let send_tx_req = SendTxRequest::parse(Some(request.params))?;
-        let tx = TransactionBody::from_bytes(send_tx_req.transaction);
+        let tx = EncodedTransaction::from_bytes(send_tx_req.transaction);
         let tx_hash = hex::encode(tx.hash());
 
         {
@@ -280,7 +280,7 @@ mod tests {
     use base64::{Engine, engine::general_purpose};
     use common::{
         rpc_primitives::RpcPollingConfig, test_utils::sequencer_sign_key_for_testing,
-        transaction::TransactionBody,
+        transaction::EncodedTransaction,
     };
 
     use sequencer_core::{
@@ -329,7 +329,7 @@ mod tests {
         }
     }
 
-    fn components_for_tests() -> (JsonHandler, Vec<AccountInitialData>, TransactionBody) {
+    fn components_for_tests() -> (JsonHandler, Vec<AccountInitialData>, EncodedTransaction) {
         let config = sequencer_config_for_tests();
         let mut sequencer_core = SequencerCore::start_from_config(config);
         let initial_accounts = sequencer_core.sequencer_config.initial_accounts.clone();
diff --git a/wallet/src/lib.rs b/wallet/src/lib.rs
index ae564d3..876303f 100644
--- a/wallet/src/lib.rs
+++ b/wallet/src/lib.rs
@@ -4,7 +4,7 @@ use base64::Engine;
 use common::{
     ExecutionFailureKind,
     sequencer_client::{SequencerClient, json::SendTxResponse},
-    transaction::TransactionBody,
+    transaction::{EncodedTransaction, NSSATransaction},
 };
 
 use anyhow::Result;
@@ -146,16 +146,13 @@ impl WalletCore {
     }
 
     ///Poll transactions
-    pub async fn poll_public_native_token_transfer(
-        &self,
-        hash: String,
-    ) -> Result<nssa::NSSATransaction> {
+    pub async fn poll_public_native_token_transfer(&self, hash: String) -> Result<NSSATransaction> {
         let transaction_encoded = self.poller.poll_tx(hash).await?;
         let tx_base64_decode =
             base64::engine::general_purpose::STANDARD.decode(transaction_encoded)?;
-        let pub_tx = TransactionBody::from_bytes(tx_base64_decode);
+        let pub_tx = EncodedTransaction::from_bytes(tx_base64_decode);
 
-        Ok(nssa::NSSATransaction::try_from(&pub_tx)?)
+        Ok(NSSATransaction::try_from(&pub_tx)?)
     }
 }