// Request
curl https://merlin.blockpi.network/v1/rpc/your-rpc-key -X POST -H "Content-Type: application/json" --data
'{
"jsonrpc": "2.0",
"method": "zkevm_batchNumberByBlockNumber",
"params": [
"0x2"
],
"id": 1
}'
// Result
{
"id": 1,
"jsonrpc": "2.0",
"result": "0x3"
}