diff --git a/Cargo.lock b/Cargo.lock
index c6bb207..a53f375 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2668,6 +2668,8 @@ dependencies = [
  "serde_json",
  "sha2 0.10.8",
  "storage",
+ "thiserror",
+ "tokio",
  "utxo",
 ]
 
diff --git a/node_core/Cargo.toml b/node_core/Cargo.toml
index 4ac9e9c..a93bd40 100644
--- a/node_core/Cargo.toml
+++ b/node_core/Cargo.toml
@@ -16,6 +16,8 @@ monotree.workspace = true
 bincode.workspace = true
 elliptic-curve.workspace = true
 reqwest.workspace = true
+thiserror.workspace = true
+tokio.workspace = true
 
 [dependencies.accounts]
 path = "../accounts"
diff --git a/node_core/src/config.rs b/node_core/src/config.rs
index f6cb680..435de4c 100644
--- a/node_core/src/config.rs
+++ b/node_core/src/config.rs
@@ -8,4 +8,8 @@ pub struct NodeConfig {
     pub home: PathBuf,
     ///Override rust log (env var logging level)
     pub override_rust_log: Option<String>,
+    ///Sequencer URL
+    pub sequencer_addr: String,
+    ///Sequencer polling duration for new blocks in seconds
+    pub seq_poll_timeout_secs: u64,
 }
diff --git a/node_core/src/lib.rs b/node_core/src/lib.rs
index a59c5f9..3fd76a3 100644
--- a/node_core/src/lib.rs
+++ b/node_core/src/lib.rs
@@ -1,6 +1,14 @@
-use accounts::account_core::AccountAddress;
+use std::sync::{
+    atomic::{AtomicU64, Ordering},
+    Arc,
+};
+
+use accounts::account_core::Account;
+use anyhow::Result;
 use config::NodeConfig;
+use sequencer_client::SequencerClient;
 use storage::NodeChainStore;
+use tokio::{sync::Mutex, task::JoinHandle};
 
 pub mod config;
 pub mod executions;
@@ -8,8 +16,70 @@ pub mod sequencer_client;
 pub mod storage;
 
 pub struct NodeCore {
-    pub storage: NodeChainStore,
-    pub curr_height: u64,
-    pub main_acc_addr: AccountAddress,
+    pub storage: Arc<Mutex<NodeChainStore>>,
+    pub curr_height: Arc<AtomicU64>,
+    pub main_acc: Account,
     pub node_config: NodeConfig,
+    pub db_updater_handle: JoinHandle<Result<()>>,
+}
+
+impl NodeCore {
+    pub async fn start_from_config_update_chain(config: NodeConfig) -> Result<Self> {
+        let client = SequencerClient::new(config.clone())?;
+
+        let genesis_id = client.get_genesis_id().await?;
+        let genesis_block = client.get_block(genesis_id.genesis_id).await?.block;
+
+        let mut storage = NodeChainStore::new_with_genesis(&config.home, genesis_block);
+
+        let account = Account::new();
+
+        let mut chain_height = genesis_id.genesis_id;
+
+        //Chain update loop
+        loop {
+            let next_block = chain_height + 1;
+
+            if let Ok(block) = client.get_block(next_block).await {
+                storage.dissect_insert_block(block.block)?;
+            } else {
+                break;
+            }
+
+            chain_height += 1;
+        }
+
+        let wrapped_storage = Arc::new(Mutex::new(storage));
+        let chain_height_wrapped = Arc::new(AtomicU64::new(chain_height));
+
+        let wrapped_storage_thread = wrapped_storage.clone();
+        let wrapped_chain_height_thread = chain_height_wrapped.clone();
+        let client_thread = client.clone();
+
+        let updater_handle = tokio::spawn(async move {
+            loop {
+                let next_block = wrapped_chain_height_thread.load(Ordering::Relaxed) + 1;
+
+                if let Ok(block) = client_thread.get_block(next_block).await {
+                    {
+                        let mut storage_guard = wrapped_storage_thread.lock().await;
+
+                        storage_guard.dissect_insert_block(block.block)?;
+                    }
+
+                    wrapped_chain_height_thread.store(next_block, Ordering::Relaxed);
+                } else {
+                    tokio::time::sleep(std::time::Duration::from_secs(config.seq_poll_timeout_secs)).await;
+                }
+            }
+        });
+
+        Ok(Self {
+            storage: wrapped_storage,
+            curr_height: chain_height_wrapped,
+            main_acc: account,
+            node_config: config.clone(),
+            db_updater_handle: updater_handle,
+        })
+    }
 }
diff --git a/node_core/src/sequencer_client/json.rs b/node_core/src/sequencer_client/json.rs
index 8b13789..d36b695 100644
--- a/node_core/src/sequencer_client/json.rs
+++ b/node_core/src/sequencer_client/json.rs
@@ -1 +1,68 @@
+use serde::{Deserialize, Serialize};
+use storage::{block::Block, transaction::Transaction};
 
+//Requests
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct RegisterAccountRequest {
+    pub nullifier_public_key: Vec<u8>,
+    pub viewing_public_key: Vec<u8>,
+    pub address: [u8; 32],
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct SendTxRequest {
+    pub transaction: Transaction,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct GetBlockDataRequest {
+    pub block_id: u64,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct GetGenesisIdRequest {}
+
+//Responses
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct RegisterAccountResponse {
+    pub status: String,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct SendTxResponse {
+    pub status: String,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct GetBlockDataResponse {
+    pub block: Block,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct GetGenesisIdResponse {
+    pub genesis_id: u64,
+}
+
+//General
+
+#[derive(Debug, Clone, Serialize)]
+pub struct SequencerRpcRequest {
+    jsonrpc: String,
+    pub method: String,
+    pub params: serde_json::Value,
+    pub id: u64,
+}
+
+impl SequencerRpcRequest {
+    pub fn from_payload_version_2_0(method: String, payload: serde_json::Value) -> Self {
+        Self {
+            jsonrpc: "2.0".to_string(),
+            method,
+            params: payload,
+            //ToDo: Correct checking of id
+            id: 1,
+        }
+    }
+}
diff --git a/node_core/src/sequencer_client/mod.rs b/node_core/src/sequencer_client/mod.rs
index f265ced..0fe041d 100644
--- a/node_core/src/sequencer_client/mod.rs
+++ b/node_core/src/sequencer_client/mod.rs
@@ -1,8 +1,132 @@
+use accounts::account_core::Account;
+use anyhow::Result;
+use json::{
+    GetBlockDataRequest, GetBlockDataResponse, GetGenesisIdRequest, GetGenesisIdResponse,
+    RegisterAccountRequest, RegisterAccountResponse, SendTxRequest, SendTxResponse,
+    SequencerRpcRequest,
+};
+use k256::elliptic_curve::group::GroupEncoding;
+use reqwest::Client;
+use serde_json::Value;
+use storage::transaction::Transaction;
+
 use crate::config::NodeConfig;
 
 pub mod json;
 
+#[derive(Clone)]
 pub struct SequencerClient {
     pub client: reqwest::Client,
     pub config: NodeConfig,
 }
+
+#[derive(thiserror::Error, Debug)]
+pub enum SequencerClientError {
+    #[error("HTTP error")]
+    HTTPError(reqwest::Error),
+    #[error("Serde error")]
+    SerdeError(serde_json::Error),
+}
+
+impl From<reqwest::Error> for SequencerClientError {
+    fn from(value: reqwest::Error) -> Self {
+        SequencerClientError::HTTPError(value)
+    }
+}
+
+impl From<serde_json::Error> for SequencerClientError {
+    fn from(value: serde_json::Error) -> Self {
+        SequencerClientError::SerdeError(value)
+    }
+}
+
+impl SequencerClient {
+    pub fn new(config: NodeConfig) -> Result<Self> {
+        Ok(Self {
+            client: Client::builder()
+                //Add more fiedls if needed
+                .timeout(std::time::Duration::from_secs(60))
+                .build()?,
+            config,
+        })
+    }
+
+    pub async fn call_method_with_payload(
+        &self,
+        method: &str,
+        payload: Value,
+    ) -> Result<Value, SequencerClientError> {
+        let request = SequencerRpcRequest::from_payload_version_2_0(method.to_string(), payload);
+
+        let call_builder = self.client.post(&self.config.sequencer_addr);
+
+        let call_res = call_builder.json(&request).send().await?;
+
+        let response = call_res.json::<Value>().await?;
+
+        Ok(response)
+    }
+
+    pub async fn get_block(
+        &self,
+        block_id: u64,
+    ) -> Result<GetBlockDataResponse, SequencerClientError> {
+        let block_req = GetBlockDataRequest { block_id };
+
+        let req = serde_json::to_value(block_req)?;
+
+        let resp = self.call_method_with_payload("get_block", req).await?;
+
+        let resp_deser = serde_json::from_value(resp)?;
+
+        Ok(resp_deser)
+    }
+
+    pub async fn send_tx(
+        &self,
+        transaction: Transaction,
+    ) -> Result<SendTxResponse, SequencerClientError> {
+        let tx_req = SendTxRequest { transaction };
+
+        let req = serde_json::to_value(tx_req)?;
+
+        let resp = self.call_method_with_payload("send_tx", req).await?;
+
+        let resp_deser = serde_json::from_value(resp)?;
+
+        Ok(resp_deser)
+    }
+
+    pub async fn register_account(
+        &self,
+        account: &Account,
+    ) -> Result<RegisterAccountResponse, SequencerClientError> {
+        let acc_req = RegisterAccountRequest {
+            nullifier_public_key: account.key_holder.nullifer_public_key.to_bytes().to_vec(),
+            viewing_public_key: account.key_holder.viewing_public_key.to_bytes().to_vec(),
+            address: account.address,
+        };
+
+        let req = serde_json::to_value(acc_req)?;
+
+        let resp = self
+            .call_method_with_payload("register_account", req)
+            .await?;
+
+        let resp_deser = serde_json::from_value(resp)?;
+
+        Ok(resp_deser)
+    }
+
+    pub async fn get_genesis_id(&self) -> Result<GetGenesisIdResponse, SequencerClientError> {
+        let genesis_req = GetGenesisIdRequest {};
+
+        let req = serde_json::to_value(genesis_req)?;
+
+        let resp = self.call_method_with_payload("get_genesis", req).await?;
+
+        let resp_deser = serde_json::from_value(resp)?;
+
+        Ok(resp_deser)
+    }
+}
diff --git a/node_core/src/storage/mod.rs b/node_core/src/storage/mod.rs
index 0f48c35..3e16864 100644
--- a/node_core/src/storage/mod.rs
+++ b/node_core/src/storage/mod.rs
@@ -2,12 +2,14 @@ use std::path::Path;
 
 use accounts::account_core::{Account, AccountAddress};
 use accounts_store::NodeAccountsStore;
+use anyhow::Result;
 use block_store::NodeBlockStore;
-use rand::{rngs::OsRng, RngCore};
 use storage::{
-    block::{Block, HashableBlockData},
+    block::Block,
     merkle_tree_public::merkle_tree::{PublicTransactionMerkleTree, UTXOCommitmentsMerkleTree},
+    nullifier::UTXONullifier,
     nullifier_sparse_merkle_tree::NullifierSparseMerkleTree,
+    utxo_commitment::UTXOCommitment,
 };
 
 pub mod accounts_store;
@@ -25,30 +27,12 @@ pub struct NodeChainStore {
 }
 
 impl NodeChainStore {
-    pub fn new_with_genesis(home_dir: &Path, genesis_id: u64, is_genesis_random: bool) -> Self {
+    pub fn new_with_genesis(home_dir: &Path, genesis_block: Block) -> Self {
         let acc_store = NodeAccountsStore::default();
         let nullifier_store = NullifierSparseMerkleTree::default();
         let utxo_commitments_store = UTXOCommitmentsMerkleTree::new(vec![]);
         let pub_tx_store = PublicTransactionMerkleTree::new(vec![]);
 
-        let mut data = [0; 32];
-        let mut prev_block_hash = [0; 32];
-
-        if is_genesis_random {
-            OsRng.fill_bytes(&mut data);
-            OsRng.fill_bytes(&mut prev_block_hash);
-        }
-
-        let hashable_data = HashableBlockData {
-            block_id: genesis_id,
-            prev_block_id: genesis_id.saturating_sub(1),
-            transactions: vec![],
-            data: data.to_vec(),
-            prev_block_hash,
-        };
-
-        let genesis_block = Block::produce_block_from_hashable_data(hashable_data);
-
         //Sequencer should panic if unable to open db,
         //as fixing this issue may require actions non-native to program scope
         let block_store =
@@ -68,4 +52,30 @@ impl NodeChainStore {
     pub fn get_main_account_addr(&self) -> AccountAddress {
         self.node_main_account_info.address
     }
+
+    pub fn dissect_insert_block(&mut self, block: Block) -> Result<()> {
+        for tx in &block.transactions {
+            self.utxo_commitments_store.add_tx_multiple(
+                tx.utxo_commitments_created_hashes
+                    .clone()
+                    .into_iter()
+                    .map(|hash| UTXOCommitment { hash })
+                    .collect(),
+            );
+
+            self.nullifier_store.insert_items(
+                tx.nullifier_created_hashes
+                    .clone()
+                    .into_iter()
+                    .map(|hash| UTXONullifier { utxo_hash: hash })
+                    .collect(),
+            )?;
+
+            self.pub_tx_store.add_tx(tx.clone());
+        }
+
+        self.block_store.put_block_at_id(block)?;
+
+        Ok(())
+    }
 }
diff --git a/sequencer_core/src/sequecer_store/block_store.rs b/sequencer_core/src/sequecer_store/block_store.rs
index 69c889a..5f668d4 100644
--- a/sequencer_core/src/sequecer_store/block_store.rs
+++ b/sequencer_core/src/sequecer_store/block_store.rs
@@ -5,6 +5,7 @@ use storage::{block::Block, RocksDBIO};
 
 pub struct SequecerBlockStore {
     dbio: RocksDBIO,
+    pub genesis_id: u64,
 }
 
 impl SequecerBlockStore {
@@ -13,9 +14,11 @@ impl SequecerBlockStore {
     ///
     /// ATTENTION: Will overwrite genesis block.
     pub fn open_db_with_genesis(location: &Path, genesis_block: Option<Block>) -> Result<Self> {
-        Ok(Self {
-            dbio: RocksDBIO::new(location, genesis_block)?,
-        })
+        let dbio = RocksDBIO::new(location, genesis_block)?;
+
+        let genesis_id = dbio.get_meta_first_block_in_db()?;
+
+        Ok(Self { dbio, genesis_id })
     }
 
     ///Reopening existing database
diff --git a/sequencer_rpc/src/process.rs b/sequencer_rpc/src/process.rs
index 5314f62..8e17f6f 100644
--- a/sequencer_rpc/src/process.rs
+++ b/sequencer_rpc/src/process.rs
@@ -11,8 +11,9 @@ use rpc_primitives::{
 use crate::{
     rpc_error_responce_inverter,
     types::rpc_structs::{
-        GetBlockDataRequest, GetBlockDataResponse, HelloRequest, HelloResponse,
-        RegisterAccountRequest, RegisterAccountResponse, SendTxRequest, SendTxResponse,
+        GetBlockDataRequest, GetBlockDataResponse, GetGenesisIdRequest, GetGenesisIdResponse,
+        HelloRequest, HelloResponse, RegisterAccountRequest, RegisterAccountResponse,
+        SendTxRequest, SendTxResponse,
     },
 };
 
@@ -100,12 +101,27 @@ impl JsonHandler {
         respond(helperstruct)
     }
 
+    async fn process_get_genesis(&self, request: Request) -> Result<Value, RpcErr> {
+        let _get_genesis_req = GetGenesisIdRequest::parse(Some(request.params))?;
+
+        let genesis_id = {
+            let state = self.sequencer_state.lock().await;
+
+            state.store.block_store.genesis_id
+        };
+
+        let helperstruct = GetGenesisIdResponse { genesis_id };
+
+        respond(helperstruct)
+    }
+
     pub async fn process_request_internal(&self, request: Request) -> Result<Value, RpcErr> {
         match request.method.as_ref() {
             "hello" => self.process_temp_hello(request).await,
             "register_account" => self.process_register_account_request(request).await,
             "send_tx" => self.process_send_tx(request).await,
             "get_block" => self.process_get_block_data(request).await,
+            "get_genesis" => self.process_get_genesis(request).await,
             _ => Err(RpcErr(RpcError::method_not_found(request.method))),
         }
     }
diff --git a/sequencer_rpc/src/types/rpc_structs.rs b/sequencer_rpc/src/types/rpc_structs.rs
index c8dc5d3..3e09507 100644
--- a/sequencer_rpc/src/types/rpc_structs.rs
+++ b/sequencer_rpc/src/types/rpc_structs.rs
@@ -27,10 +27,14 @@ pub struct GetBlockDataRequest {
     pub block_id: u64,
 }
 
+#[derive(Serialize, Deserialize, Debug)]
+pub struct GetGenesisIdRequest {}
+
 parse_request!(HelloRequest);
 parse_request!(RegisterAccountRequest);
 parse_request!(SendTxRequest);
 parse_request!(GetBlockDataRequest);
+parse_request!(GetGenesisIdRequest);
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct HelloResponse {
@@ -51,3 +55,8 @@ pub struct SendTxResponse {
 pub struct GetBlockDataResponse {
     pub block: Block,
 }
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct GetGenesisIdResponse {
+    pub genesis_id: u64,
+}