getFirstAvailableBlock

curl https://fra.rpc.orbitflare.com?api_key=YOUR-API-KEY -X POST -H "Content-Type: application/json" -d '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "getFirstAvailableBlock"
}'

import { Connection } from '@solana/web3.js';

const connection = new Connection('https://fra.rpc.orbitflare.com?api_key=YOUR-API-KEY');

// Get first available block
const firstBlock = await connection.getFirstAvailableBlock();
console.log('First available block:', firstBlock);

// Get block range
async function getAvailableBlockRange() {
  const firstBlock = await connection.getFirstAvailableBlock();
  const currentSlot = await connection.getSlot();
  
  return {
    firstBlock,
    currentSlot,
    totalBlocks: currentSlot - firstBlock + 1
  };
}