// Request
curl https://fantom.blockpi.network/v1/rpc/your-rpc-key -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getBlockTransactionCountByHash","params":["0xa8d01d6d5e70cb3bd8cd423eaa11714b89adef041141e4ca31bcdc6879543b23"],"id":1}'
// Result
{
"jsonrpc": "2.0",
"id": 1,
"result": "0x4"
}