diff --git a/Cargo.lock b/Cargo.lock
index 88ad67b..0818a8a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -526,7 +526,7 @@ dependencies = [
 
 [[package]]
 name = "cli"
-version = "0.1.0"
+version = "0.1.3"
 dependencies = [
  "clap",
  "client",
@@ -543,7 +543,7 @@ dependencies = [
 
 [[package]]
 name = "client"
-version = "0.1.1"
+version = "0.1.3"
 dependencies = [
  "common",
  "config",
@@ -645,7 +645,7 @@ checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
 [[package]]
 name = "common"
-version = "0.1.0"
+version = "0.1.3"
 dependencies = [
  "ethers",
  "eyre",
@@ -657,7 +657,7 @@ dependencies = [
 
 [[package]]
 name = "config"
-version = "0.1.0"
+version = "0.1.3"
 dependencies = [
  "common",
  "ethers",
@@ -677,7 +677,7 @@ dependencies = [
 
 [[package]]
 name = "consensus"
-version = "0.1.0"
+version = "0.1.3"
 dependencies = [
  "async-trait",
  "blst",
@@ -1461,7 +1461,7 @@ checksum = "0206175f82b8d6bf6652ff7d71a1e27fd2e4efde587fd368662814d6ec1d9ce0"
 
 [[package]]
 name = "execution"
-version = "0.1.0"
+version = "0.1.3"
 dependencies = [
  "async-trait",
  "bytes",
@@ -1979,7 +1979,7 @@ checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
 
 [[package]]
 name = "helios"
-version = "0.1.2"
+version = "0.1.3"
 dependencies = [
  "client",
  "common",
diff --git a/cli/src/main.rs b/cli/src/main.rs
index cee757d..270f777 100644
--- a/cli/src/main.rs
+++ b/cli/src/main.rs
@@ -15,16 +15,25 @@ use eyre::Result;
 use client::{database::FileDB, Client, ClientBuilder};
 use config::{CliConfig, Config};
 use futures::executor::block_on;
-use log::info;
+use log::{error, info};
 
 #[tokio::main]
 async fn main() -> Result<()> {
     env_logger::Builder::from_env(Env::default().default_filter_or("info")).init();
 
     let config = get_config();
-    let mut client = ClientBuilder::new().config(config).build()?;
+    let mut client = match ClientBuilder::new().config(config).build() {
+        Ok(client) => client,
+        Err(err) => {
+            error!("{}", err);
+            exit(1);
+        }
+    };
 
-    client.start().await?;
+    if let Err(err) = client.start().await {
+        error!("{}", err);
+        exit(1);
+    }
 
     register_shutdown_handler(client);
     std::future::pending().await
diff --git a/client/src/errors.rs b/client/src/errors.rs
index b0b0018..84959fd 100644
--- a/client/src/errors.rs
+++ b/client/src/errors.rs
@@ -1,5 +1,5 @@
 use common::errors::BlockNotFoundError;
-use execution::errors::EvmError;
+use execution::errors::{EvmError, ExecutionError};
 use eyre::Report;
 use thiserror::Error;
 
@@ -7,7 +7,10 @@ use thiserror::Error;
 #[derive(Debug, Error)]
 pub enum NodeError {
     #[error(transparent)]
-    ExecutionError(#[from] EvmError),
+    ExecutionEvmError(#[from] EvmError),
+
+    #[error(transparent)]
+    ExecutionError(#[from] ExecutionError),
 
     #[error("out of sync: {0} slots behind")]
     OutOfSync(u64),
@@ -37,7 +40,7 @@ pub enum NodeError {
 impl NodeError {
     pub fn to_json_rpsee_error(self) -> jsonrpsee::core::Error {
         match self {
-            NodeError::ExecutionError(evm_err) => match evm_err {
+            NodeError::ExecutionEvmError(evm_err) => match evm_err {
                 EvmError::Revert(data) => {
                     let mut msg = "execution reverted".to_string();
                     if let Some(reason) = data.as_ref().and_then(EvmError::decode_revert_reason) {
diff --git a/client/src/node.rs b/client/src/node.rs
index 9987413..48bc0dc 100644
--- a/client/src/node.rs
+++ b/client/src/node.rs
@@ -54,10 +54,17 @@ impl Node {
     }
 
     pub async fn sync(&mut self) -> Result<(), NodeError> {
+        let chain_id = self.config.chain.chain_id;
+        self.execution
+            .check_rpc(chain_id)
+            .await
+            .map_err(NodeError::ExecutionError)?;
+
         self.consensus
             .sync()
             .await
             .map_err(NodeError::ConsensusSyncError)?;
+
         self.update_payloads().await
     }
 
@@ -121,7 +128,7 @@ impl Node {
             &self.payloads,
             self.chain_id(),
         );
-        evm.call(opts).await.map_err(NodeError::ExecutionError)
+        evm.call(opts).await.map_err(NodeError::ExecutionEvmError)
     }
 
     pub async fn estimate_gas(&self, opts: &CallOpts) -> Result<u64, NodeError> {
@@ -136,7 +143,7 @@ impl Node {
         );
         evm.estimate_gas(opts)
             .await
-            .map_err(NodeError::ExecutionError)
+            .map_err(NodeError::ExecutionEvmError)
     }
 
     pub async fn get_balance(&self, address: &Address, block: BlockTag) -> Result<U256> {
diff --git a/execution/src/errors.rs b/execution/src/errors.rs
index 415fe91..0512d10 100644
--- a/execution/src/errors.rs
+++ b/execution/src/errors.rs
@@ -24,6 +24,10 @@ pub enum ExecutionError {
     MissingLog(String, U256),
     #[error("too many logs to prove: {0}, current limit is: {1}")]
     TooManyLogsToProve(usize, usize),
+    #[error("rpc error: {0:?}")]
+    RpcError(Report),
+    #[error("execution rpc is for the incorect network")]
+    IncorrectRpcNetwork(),
 }
 
 /// Errors that can occur during evm.rs calls
diff --git a/execution/src/execution.rs b/execution/src/execution.rs
index 07858cc..0f310f8 100644
--- a/execution/src/execution.rs
+++ b/execution/src/execution.rs
@@ -32,10 +32,24 @@ pub struct ExecutionClient<R: ExecutionRpc> {
 
 impl<R: ExecutionRpc> ExecutionClient<R> {
     pub fn new(rpc: &str) -> Result<Self> {
-        let rpc = ExecutionRpc::new(rpc)?;
+        let rpc: R = ExecutionRpc::new(rpc)?;
         Ok(ExecutionClient { rpc })
     }
 
+    pub async fn check_rpc(&self, chain_id: u64) -> Result<(), ExecutionError> {
+        if self
+            .rpc
+            .chain_id()
+            .await
+            .map_err(ExecutionError::RpcError)?
+            != chain_id
+        {
+            Err(ExecutionError::IncorrectRpcNetwork())
+        } else {
+            Ok(())
+        }
+    }
+
     pub async fn get_account(
         &self,
         address: &Address,
diff --git a/execution/src/rpc/http_rpc.rs b/execution/src/rpc/http_rpc.rs
index 4b02ee4..d395b4b 100644
--- a/execution/src/rpc/http_rpc.rs
+++ b/execution/src/rpc/http_rpc.rs
@@ -128,4 +128,13 @@ impl ExecutionRpc for HttpRpc {
             .await
             .map_err(|e| RpcError::new("get_logs", e))?)
     }
+
+    async fn chain_id(&self) -> Result<u64> {
+        Ok(self
+            .provider
+            .get_chainid()
+            .await
+            .map_err(|e| RpcError::new("chain_id", e))?
+            .as_u64())
+    }
 }
diff --git a/execution/src/rpc/mock_rpc.rs b/execution/src/rpc/mock_rpc.rs
index 4527c68..3a4fd1e 100644
--- a/execution/src/rpc/mock_rpc.rs
+++ b/execution/src/rpc/mock_rpc.rs
@@ -61,4 +61,8 @@ impl ExecutionRpc for MockRpc {
         let logs = read_to_string(self.path.join("logs.json"))?;
         Ok(serde_json::from_str(&logs)?)
     }
+
+    async fn chain_id(&self) -> Result<u64> {
+        Err(eyre!("not implemented"))
+    }
 }
diff --git a/execution/src/rpc/mod.rs b/execution/src/rpc/mod.rs
index 1a47c16..0c1b799 100644
--- a/execution/src/rpc/mod.rs
+++ b/execution/src/rpc/mod.rs
@@ -29,4 +29,5 @@ pub trait ExecutionRpc: Send + Clone + Sync + 'static {
     async fn get_transaction_receipt(&self, tx_hash: &H256) -> Result<Option<TransactionReceipt>>;
     async fn get_transaction(&self, tx_hash: &H256) -> Result<Option<Transaction>>;
     async fn get_logs(&self, filter: &Filter) -> Result<Vec<Log>>;
+    async fn chain_id(&self) -> Result<u64>;
 }