diff --git a/package-lock.json b/package-lock.json
index 8cd37ef3..6f5e4517 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11932,7 +11932,7 @@
     },
     "packages/web3-utils": {
       "name": "@massalabs/web3-utils",
-      "version": "1.4.5",
+      "version": "1.4.6",
       "license": "MIT",
       "dependencies": {
         "buffer": "^6.0.3",
diff --git a/packages/web3-utils/package.json b/packages/web3-utils/package.json
index 143febe2..6c01a4af 100644
--- a/packages/web3-utils/package.json
+++ b/packages/web3-utils/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@massalabs/web3-utils",
-  "version": "1.4.5",
+  "version": "1.4.6",
   "description": "Set of utilities shared between multiple @massalabs packages",
   "main": "dist/cmd/index.js",
   "module": "dist/esm/index.js",
diff --git a/packages/web3-utils/src/constants.ts b/packages/web3-utils/src/constants.ts
index 7a90594e..d98bf06e 100644
--- a/packages/web3-utils/src/constants.ts
+++ b/packages/web3-utils/src/constants.ts
@@ -33,10 +33,32 @@ export const SECURENET = 'SecureNet';
 export const LABNET = 'LabNet';
 export const SANDBOX = 'Sandbox';
 
+export const MAINNET_CHAIN_ID = 77658377n;
+export const BUILDNET_CHAIN_ID = 77658366n;
+export const SECURENET_CHAIN_ID = 77658383n;
+export const LABNET_CHAIN_ID = 77658376n;
+export const SANDBOX_CHAIN_ID = 77n;
+
+// Adjusted: Use the values of the constants as keys
 export const CHAIN_ID_TO_NETWORK_NAME = {
-  77658377: MAINNET,
-  77658366: BUILDNET,
-  77658383: SECURENET,
-  77658376: LABNET,
-  77: SANDBOX,
-} as const; // type is inferred as the specific, unchangeable structure
+  [MAINNET_CHAIN_ID.toString()]: MAINNET,
+  [BUILDNET_CHAIN_ID.toString()]: BUILDNET,
+  [SECURENET_CHAIN_ID.toString()]: SECURENET,
+  [LABNET_CHAIN_ID.toString()]: LABNET,
+  [SANDBOX_CHAIN_ID.toString()]: SANDBOX,
+} as const;
+
+// Define ChainId type as the keys of CHAIN_ID_TO_NETWORK_NAME
+export type ChainId = keyof typeof CHAIN_ID_TO_NETWORK_NAME;
+
+// NETWORK_NAME_TO_CHAIN_ID mapping remains the same
+export const NETWORK_NAME_TO_CHAIN_ID = {
+  [MAINNET]: MAINNET_CHAIN_ID,
+  [BUILDNET]: BUILDNET_CHAIN_ID,
+  [SECURENET]: SECURENET_CHAIN_ID,
+  [LABNET]: LABNET_CHAIN_ID,
+  [SANDBOX]: SANDBOX_CHAIN_ID,
+} as const;
+
+// Define NetworkName type as the keys of NETWORK_NAME_TO_CHAIN_ID
+export type NetworkName = keyof typeof NETWORK_NAME_TO_CHAIN_ID;