diff --git a/common/utils.js b/common/utils.js
index a63f1eb6..8fa77a69 100644
--- a/common/utils.js
+++ b/common/utils.js
@@ -440,6 +440,16 @@ const getMultisigProof = async (config, chain, multisigSessionId) => {
 
 const calculateDomainSeparator = (chain, router, network) => keccak256(Buffer.from(`${chain}${router}${network}`));
 
+const getItsEdgeContract = (chainConfig) => {
+    const itsEdgeContract = chainConfig.contracts.InterchainTokenService?.address || chainConfig.contracts.ITS?.objects?.ChannelId;
+
+    if (!itsEdgeContract) {
+        throw new Error(`Missing ITS edge contract for chain ${chainConfig.name}`);
+    }
+
+    return itsEdgeContract;
+};
+
 module.exports = {
     loadConfig,
     saveConfig,
@@ -478,4 +488,5 @@ module.exports = {
     getAmplifierContractOnchainConfig,
     getSaltFromKey,
     calculateDomainSeparator,
+    getItsEdgeContract,
 };
diff --git a/cosmwasm/README.md b/cosmwasm/README.md
index f666c045..b32e9488 100644
--- a/cosmwasm/README.md
+++ b/cosmwasm/README.md
@@ -216,6 +216,43 @@ Example usage:
 node cosmwasm/submit-proposal.js execute -c Router -t "Proposal title" -d "Proposal description" --deposit 100000000 --msg '{"register_chain":{"chain":"avalanche","gateway_address":"axelar17cnq5hujmkf2lr2c5hatqmhzlvwm365rqc5ugryphxeftavjef9q89zxvp","msg_id_format":"hex_tx_hash_and_event_index"}}'
 ```
 
+### Register chain on ITS Hub through governance proposal
+
+To submit a governance proposal to register an ITS chain, use the `submit-proposal` script with the `its-hub-register-chains <chains...>` command. The `chains` argument is used to pass a list of chains to register on ITS hub.
+
+**Prerequisites**: ITS hub contract configuration in json file must include the following attributes per chain:
+
+| Attribute                   | Description                                                                                | EVM | Sui |
+| --------------------------- | ------------------------------------------------------------------------------------------ | --- | --- |
+| `maxUintBits`               | Number of bits for the chain's maximum uint representation                                 | 256 | 64  |
+| `maxDecimalsWhenTruncating` | Maximum decimal places allowed when truncating ITS token amounts transferred to this chain | 255 | 6   |
+
+For EVM chains, the values above are used by default if not specified explicitly.
+
+Example configuration:
+
+```
+"axelar": {
+  "contracts": {
+    ...
+    "InterchainTokenService": {
+      ...
+      "some-sui-chain": {
+        "maxUintBits": 64,
+        "maxDecimalsWhenTruncating": 6,
+      }
+    }
+    ...
+  }
+}
+```
+
+Example usage:
+
+```
+node cosmwasm/submit-proposal.js its-hub-register-chains avalanche-fuji sui-test2 -t "Proposal title" -d "Proposal description" --deposit 100000000 -r $RUN_AS_ACCOUNT
+```
+
 ### Submit a proposal to change a parameter
 
 To submit a governance proposal to change a parameter, use the `submit-proposal` script with the `paramChange` command. The `--changes` option should be used to pass a JSON string representing an array of parameter changes.
diff --git a/cosmwasm/submit-proposal.js b/cosmwasm/submit-proposal.js
index 90f3c73a..92c29a15 100644
--- a/cosmwasm/submit-proposal.js
+++ b/cosmwasm/submit-proposal.js
@@ -16,6 +16,7 @@ const {
     getAmplifierBaseContractConfig,
     getAmplifierContractConfig,
     updateCodeId,
+    getChainTruncationParams,
     decodeProposalAttributes,
     encodeStoreCodeProposal,
     encodeStoreInstantiateProposal,
@@ -27,7 +28,7 @@ const {
     submitProposal,
     makeInstantiateMsg,
 } = require('./utils');
-const { saveConfig, loadConfig, printInfo, prompt } = require('../common');
+const { saveConfig, loadConfig, printInfo, prompt, getChainConfig, getItsEdgeContract } = require('../common');
 const {
     StoreCodeProposal,
     StoreAndInstantiateContractProposal,
@@ -167,6 +168,30 @@ const execute = async (client, wallet, config, options) => {
     await callSubmitProposal(client, wallet, config, options, proposal);
 };
 
+const registerItsChain = async (client, wallet, config, options) => {
+    const chains = options.chains.map((chain) => {
+        const chainConfig = getChainConfig(config, chain);
+        const { maxUintBits, maxDecimalsWhenTruncating } = getChainTruncationParams(config, chainConfig);
+
+        const itsEdgeContract = getItsEdgeContract(chainConfig);
+
+        return {
+            chain: chainConfig.axelarId,
+            its_edge_contract: itsEdgeContract,
+            truncation: {
+                max_uint: (2n ** BigInt(maxUintBits) - 1n).toString(),
+                max_decimals_when_truncating: maxDecimalsWhenTruncating,
+            },
+        };
+    });
+
+    await execute(client, wallet, config, {
+        ...options,
+        contractName: 'InterchainTokenService',
+        msg: `{ "register_chains": { "chains": ${JSON.stringify(chains)} } }`,
+    });
+};
+
 const paramChange = async (client, wallet, config, options) => {
     const proposal = encodeParameterChangeProposal(options);
 
@@ -256,12 +281,22 @@ const programHandler = () => {
 
     const executeCmd = program
         .command('execute')
-        .description('Submit a execute wasm contract proposal')
+        .description('Submit an execute wasm contract proposal')
         .action((options) => {
             mainProcessor(execute, options);
         });
     addAmplifierOptions(executeCmd, { contractOptions: true, executeProposalOptions: true, proposalOptions: true, runAs: true });
 
+    const registerItsChainCmd = program
+        .command('its-hub-register-chains')
+        .description('Submit an execute wasm contract proposal to register an ITS chain')
+        .argument('<chains...>', 'list of chains to register on ITS hub')
+        .action((chains, options) => {
+            options.chains = chains;
+            mainProcessor(registerItsChain, options);
+        });
+    addAmplifierOptions(registerItsChainCmd, { registerItsChainOptions: true, proposalOptions: true, runAs: true });
+
     const paramChangeCmd = program
         .command('paramChange')
         .description('Submit a parameter change proposal')
diff --git a/cosmwasm/utils.js b/cosmwasm/utils.js
index ab902c55..cbaf8400 100644
--- a/cosmwasm/utils.js
+++ b/cosmwasm/utils.js
@@ -29,9 +29,13 @@ const {
     getChainConfig,
     getSaltFromKey,
     calculateDomainSeparator,
+    validateParameters,
 } = require('../common');
 const { normalizeBech32 } = require('@cosmjs/encoding');
 
+const DEFAULT_MAX_UINT_BITS_EVM = 256;
+const DEFAULT_MAX_DECIMALS_WHEN_TRUNCATING_EVM = 255;
+
 const governanceAddress = 'axelar10d07y265gmmuvt4z0w9aw880jnsr700j7v9daj';
 
 const prepareWallet = async ({ mnemonic }) => await DirectSecp256k1HdWallet.fromMnemonic(mnemonic, { prefix: 'axelar' });
@@ -606,6 +610,24 @@ const fetchCodeIdFromCodeHash = async (client, contractBaseConfig) => {
     return codeId;
 };
 
+const getChainTruncationParams = (config, chainConfig) => {
+    const key = chainConfig.axelarId.toLowerCase();
+    const chainTruncationParams = config.axelar.contracts.InterchainTokenService[key];
+
+    let maxUintBits = chainTruncationParams?.maxUintBits;
+    let maxDecimalsWhenTruncating = chainTruncationParams?.maxDecimalsWhenTruncating;
+
+    // set EVM default values
+    if (chainConfig.chainType === 'evm') {
+        maxUintBits = maxUintBits || DEFAULT_MAX_UINT_BITS_EVM;
+        maxDecimalsWhenTruncating = maxDecimalsWhenTruncating || DEFAULT_MAX_DECIMALS_WHEN_TRUNCATING_EVM;
+    }
+
+    validateParameters({ isValidNumber: { maxUintBits, maxDecimalsWhenTruncating } });
+
+    return { maxUintBits, maxDecimalsWhenTruncating };
+};
+
 const getInstantiatePermission = (accessType, addresses) => {
     return {
         permission: accessType,
@@ -840,6 +862,7 @@ module.exports = {
     instantiateContract,
     makeInstantiateMsg,
     fetchCodeIdFromCodeHash,
+    getChainTruncationParams,
     decodeProposalAttributes,
     encodeStoreCodeProposal,
     encodeStoreInstantiateProposal,