Sui Fast Mode: sui_executeTransactionBlock via BlockRazor

import { SuiClient } from '@mysten/sui.js/client';
import { TransactionBlock } from '@mysten/sui.js/transactions';
import { Ed25519Keypair } from '@mysten/sui.js/keypairs/ed25519';

// Connect to the BlockRazor Sui Fast endpoint
const client = new SuiClient({
  url: 'https://fast.blockrazor.io/sui',
});

// Build your transaction block
const txb = new TransactionBlock();

// Example: transfer SUI to a recipient
const [coin] = txb.splitCoins(txb.gas, [txb.pure(100_000_000n)]); // 0.1 SUI
txb.transferObjects([coin], txb.pure(RECIPIENT_ADDRESS));

// Sign the transaction block with your keypair
const keypair = Ed25519Keypair.fromSecretKey(YOUR_SECRET_KEY_BYTES);
const { bytes: serializedTxBlock, signature } = await txb.sign({
  client,
  signer: keypair,
});

// Execute the transaction block via BlockRazor Fast mode
const result = await client.executeTransactionBlock({
  transactionBlock: serializedTxBlock,
  signature: signature,
  options: {
    showEffects: true,
    showEvents: true,
    showObjectChanges: true,
  },
  requestType: 'WaitForEffectsCert',
});

console.log('Transaction digest:', result.digest);
console.log('Execution status:', result.effects?.status);