diff --git a/sequencer_core/src/transaction_mempool.rs b/sequencer_core/src/transaction_mempool.rs
index 7029c6c..2002212 100644
--- a/sequencer_core/src/transaction_mempool.rs
+++ b/sequencer_core/src/transaction_mempool.rs
@@ -1,6 +1,6 @@
 use mempool::mempoolitem::MemPoolItem;
 use serde::{Deserialize, Serialize};
-use storage::transaction::{Transaction, TxHash};
+use storage::{merkle_tree_public::TreeHashType, transaction::Transaction};
 
 #[derive(Debug)]
 pub struct TransactionMempool {
@@ -29,7 +29,7 @@ impl<'de> Deserialize<'de> for TransactionMempool {
 }
 
 impl MemPoolItem for TransactionMempool {
-    type Identifier = TxHash;
+    type Identifier = TreeHashType;
 
     fn identifier(&self) -> Self::Identifier {
         self.tx.hash
diff --git a/storage/src/lib.rs b/storage/src/lib.rs
index 6baa60a..f8e161c 100644
--- a/storage/src/lib.rs
+++ b/storage/src/lib.rs
@@ -11,6 +11,7 @@ pub mod block;
 pub mod error;
 pub mod merkle_tree_public;
 pub mod transaction;
+pub mod utxo_commitment;
 
 ///Maximal size of stored blocks in base
 ///
diff --git a/storage/src/merkle_tree_public/hasher.rs b/storage/src/merkle_tree_public/hasher.rs
index d3f6e6b..b23388f 100644
--- a/storage/src/merkle_tree_public/hasher.rs
+++ b/storage/src/merkle_tree_public/hasher.rs
@@ -1,7 +1,7 @@
 use rs_merkle::Hasher;
 use sha2::{digest::FixedOutput, Digest, Sha256};
 
-use super::HashType;
+use super::TreeHashType;
 
 #[derive(Debug, Clone)]
 ///Our own hasher.
@@ -9,12 +9,12 @@ use super::HashType;
 pub struct OwnHasher {}
 
 impl Hasher for OwnHasher {
-    type Hash = HashType;
+    type Hash = TreeHashType;
 
-    fn hash(data: &[u8]) -> HashType {
+    fn hash(data: &[u8]) -> TreeHashType {
         let mut hasher = Sha256::new();
 
         hasher.update(data);
-        <HashType>::from(hasher.finalize_fixed())
+        <TreeHashType>::from(hasher.finalize_fixed())
     }
 }
diff --git a/storage/src/merkle_tree_public/merkle_tree.rs b/storage/src/merkle_tree_public/merkle_tree.rs
index e160a2d..ac933ea 100644
--- a/storage/src/merkle_tree_public/merkle_tree.rs
+++ b/storage/src/merkle_tree_public/merkle_tree.rs
@@ -2,28 +2,32 @@ use std::collections::HashMap;
 
 use rs_merkle::{MerkleProof, MerkleTree};
 
-use crate::transaction::Transaction;
+use crate::{transaction::Transaction, utxo_commitment::UTXOCommitment};
 
-use super::{hasher::OwnHasher, HashType};
+use super::{hasher::OwnHasher, tree_leav_item::TreeLeavItem, TreeHashType};
 
-pub struct PublicTransactionsMerkleTree {
-    leaves: HashMap<usize, Transaction>,
-    hash_to_id_map: HashMap<HashType, usize>,
+pub struct HashStorageMerkleTree<Leav: TreeLeavItem + Clone> {
+    leaves: HashMap<usize, Leav>,
+    hash_to_id_map: HashMap<TreeHashType, usize>,
     tree: MerkleTree<OwnHasher>,
 }
 
-impl PublicTransactionsMerkleTree {
-    pub fn new(leaves_vec: Vec<Transaction>) -> Self {
+pub type PublicTransactionMerkleTree = HashStorageMerkleTree<Transaction>;
+
+pub type UTXOCommitmentsMerkleTree = HashStorageMerkleTree<UTXOCommitment>;
+
+impl<Leav: TreeLeavItem + Clone> HashStorageMerkleTree<Leav> {
+    pub fn new(leaves_vec: Vec<Leav>) -> Self {
         let mut leaves_map = HashMap::new();
         let mut hash_to_id_map = HashMap::new();
 
-        let leaves_hashed: Vec<HashType> = leaves_vec
+        let leaves_hashed: Vec<TreeHashType> = leaves_vec
             .iter()
             .enumerate()
             .map(|(id, tx)| {
                 leaves_map.insert(id, tx.clone());
-                hash_to_id_map.insert(tx.hash, id);
-                tx.hash
+                hash_to_id_map.insert(tx.hash(), id);
+                tx.hash()
             })
             .collect();
         Self {
@@ -33,23 +37,23 @@ impl PublicTransactionsMerkleTree {
         }
     }
 
-    pub fn get_tx(&self, hash: HashType) -> Option<&Transaction> {
+    pub fn get_tx(&self, hash: TreeHashType) -> Option<&Leav> {
         self.hash_to_id_map
             .get(&hash)
             .and_then(|id| self.leaves.get(id))
     }
 
-    pub fn get_root(&self) -> Option<HashType> {
+    pub fn get_root(&self) -> Option<TreeHashType> {
         self.tree.root()
     }
 
-    pub fn get_proof(&self, hash: HashType) -> Option<MerkleProof<OwnHasher>> {
+    pub fn get_proof(&self, hash: TreeHashType) -> Option<MerkleProof<OwnHasher>> {
         self.hash_to_id_map
             .get(&hash)
             .map(|id| self.tree.proof(&[*id]))
     }
 
-    pub fn get_proof_multiple(&self, hashes: &[HashType]) -> Option<MerkleProof<OwnHasher>> {
+    pub fn get_proof_multiple(&self, hashes: &[TreeHashType]) -> Option<MerkleProof<OwnHasher>> {
         let ids_opt: Vec<Option<&usize>> = hashes
             .iter()
             .map(|hash| self.hash_to_id_map.get(hash))
@@ -66,27 +70,27 @@ impl PublicTransactionsMerkleTree {
         }
     }
 
-    pub fn add_tx(&mut self, tx: Transaction) {
+    pub fn add_tx(&mut self, tx: Leav) {
         let last = self.leaves.len();
 
         self.leaves.insert(last, tx.clone());
-        self.hash_to_id_map.insert(tx.hash, last);
+        self.hash_to_id_map.insert(tx.hash(), last);
 
-        self.tree.insert(tx.hash);
+        self.tree.insert(tx.hash());
 
         self.tree.commit();
     }
 
-    pub fn add_tx_multiple(&mut self, txs: Vec<Transaction>) {
+    pub fn add_tx_multiple(&mut self, txs: Vec<Leav>) {
         for tx in txs.iter() {
             let last = self.leaves.len();
 
             self.leaves.insert(last, tx.clone());
-            self.hash_to_id_map.insert(tx.hash, last);
+            self.hash_to_id_map.insert(tx.hash(), last);
         }
 
         self.tree
-            .append(&mut txs.iter().map(|tx| tx.hash).collect());
+            .append(&mut txs.iter().map(|tx| tx.hash()).collect());
 
         self.tree.commit();
     }
diff --git a/storage/src/merkle_tree_public/mod.rs b/storage/src/merkle_tree_public/mod.rs
index 1732066..8a34631 100644
--- a/storage/src/merkle_tree_public/mod.rs
+++ b/storage/src/merkle_tree_public/mod.rs
@@ -1,4 +1,5 @@
 pub mod hasher;
 pub mod merkle_tree;
+pub mod tree_leav_item;
 
-pub type HashType = [u8; 32];
+pub type TreeHashType = [u8; 32];
diff --git a/storage/src/merkle_tree_public/tree_leav_item.rs b/storage/src/merkle_tree_public/tree_leav_item.rs
new file mode 100644
index 0000000..deecaf7
--- /dev/null
+++ b/storage/src/merkle_tree_public/tree_leav_item.rs
@@ -0,0 +1,19 @@
+use crate::{transaction::Transaction, utxo_commitment::UTXOCommitment};
+
+use super::TreeHashType;
+
+pub trait TreeLeavItem {
+    fn hash(&self) -> TreeHashType;
+}
+
+impl TreeLeavItem for Transaction {
+    fn hash(&self) -> TreeHashType {
+        self.hash
+    }
+}
+
+impl TreeLeavItem for UTXOCommitment {
+    fn hash(&self) -> TreeHashType {
+        self.hash
+    }
+}
diff --git a/storage/src/transaction.rs b/storage/src/transaction.rs
index 2588e95..d9ba928 100644
--- a/storage/src/transaction.rs
+++ b/storage/src/transaction.rs
@@ -1,10 +1,10 @@
 use serde::{Deserialize, Serialize};
 
-pub type TxHash = [u8; 32];
+use crate::merkle_tree_public::TreeHashType;
 
 //ToDo: Update Tx model, when it is clear
 #[derive(Debug, Serialize, Deserialize, Clone)]
 ///General transaction object
 pub struct Transaction {
-    pub hash: TxHash,
+    pub hash: TreeHashType,
 }
diff --git a/storage/src/utxo_commitment.rs b/storage/src/utxo_commitment.rs
new file mode 100644
index 0000000..75c0543
--- /dev/null
+++ b/storage/src/utxo_commitment.rs
@@ -0,0 +1,10 @@
+use serde::{Deserialize, Serialize};
+
+use crate::merkle_tree_public::TreeHashType;
+
+//ToDo: Update UTXO Commitment model, when it is clear
+#[derive(Debug, Serialize, Deserialize, Clone)]
+///General commitment object
+pub struct UTXOCommitment {
+    pub hash: TreeHashType,
+}