Các phương thức RPC về khối và mạng Solana

const response = await fetch(`https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY`, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: '1',
    method: 'getLatestBlockhash',
    params: [{ commitment: 'finalized' }],
  }),
});

const { result } = await response.json();
console.log(result.value.blockhash);

import requests

url = "https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY"
payload = {
    "jsonrpc": "2.0",
    "id": "1",
    "method": "getLatestBlockhash",
    "params": [{"commitment": "finalized"}],
}
print(requests.post(url, json=payload).json()["result"]["value"]["blockhash"])

curl https://mainnet.helius-rpc.com/?api-key=YOUR_API_KEY \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": "1",
    "method": "getLatestBlockhash",
    "params": [{ "commitment": "finalized" }]
  }'