Smart Contract Deploy

TxTypeSmartContractDeploy deploys a smart contract to the given address. The following changes will be made by this transaction type.

This type of transaction can create an account, transfer tokens, deploy a smart contract, execute a smart contract, or perform a mix of aforementioned.

Import @kaiachain/viem-ext packages to add kaia features on web3

Set up a wallet client using createWalletClient, configured with the Kairos chain, an HTTP transport, and the sender’s private key converted to an account.

Create a transaction request for deploying a smart contract using prepareTransactionRequest. Specify the transaction type (TxType.SmartContractDeploy)

Sign and send the legacy transaction to the Kaia blockchain using the wallet client’s sendTransaction method, and log the transaction hash.

SmartContractDeploy.js


import {
  http,
  createWalletClient, kairos,
  TxType,
  privateKeyToAccount
} from "@kaiachain/viem-ext";
const senderWallet = createWalletClient({
  chain: kairos,
  transport: http(),
  account: privateKeyToAccount(
    "0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8"
  ),
});
// Example usage
(async () => {
  const tx = await senderWallet.prepareTransactionRequest({
    type: TxType.SmartContractDeploy,
    account: senderWallet.account,
    value: 0,
    humanReadable: false,
    codeFormat: 0,
    data: '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',
  });
  console.log('tx', tx);
  
  const sentTx = await senderWallet.sendTransaction(tx);
  console.log("contract deploy tx", sentTx);
})();

output


❯ node SmartContractDeploy.js
tx {
  type: 40,
  account: {
    address: '0xA2a8854b1802D8Cd5De631E690817c253d6a9153',
    nonceManager: undefined,
    sign: [AsyncFunction: sign],
    signAuthorization: [AsyncFunction: signAuthorization],
    signMessage: [AsyncFunction: signMessage],
    signTransaction: [AsyncFunction: signTransaction],
    signTypedData: [AsyncFunction: signTypedData],
    source: 'privateKey',
    type: 'local',
    publicKey: '0x04dc9dccbd788c00fa98f7f4082f2f714e799bc0c29d63f04d48b54fe6250453cdaf06ca34ae8714cf3dae06bacdb78c7c2d4054bd38961d40853cd5f15955da79'   
  },
  value: 0,
  humanReadable: false,
  codeFormat: 0,
  data: '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',
  from: '0xA2a8854b1802D8Cd5De631E690817c253d6a9153',
  nonce: 2382,
  chainId: 1001,
  gas: 106737n,
  gasPrice: '0x66720b300',
  gasLimit: 266842
}
contract deploy tx 0xbae1cacead055c19fa326af76598f99f779ed30a4c33513a6688a490a0bde12c