// Request
curl https://starknet.blockpi.network/v1/rpc/your-rpc-key -X POST -H "Content-Type: application/json"
--data '{"jsonrpc":"2.0","method":"starknet_getClassHashAt","params":["latest", "0x04c0a5193d58f74fbace4b74dcf65481e734ed1714121bdc571da345540efa05"],"id":1}'
// Result
{
"id": 1,
"jsonrpc": "2.0",
"result": "0x7d1bd0a80107d8ffdb7fe5158548ac852ff02e8823fda8704d8cfa5b2f532e4"
}