B2 RPC Endpoint

curl https://mainnet.b2-rpc.com \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'

const res = await fetch("https://mainnet.b2-rpc.com", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    jsonrpc: "2.0",
    id: 1,
    method: "eth_blockNumber",
    params: [],
  }),
});
const { result } = await res.json();
console.log(result);