Block details.
Epoch: 30 Number of transactions in block: 2 slot_no: 664549 epoch_slot_no: 16549 block_no: 664472 slot_leader_id: 3 size: 1519 time: 2018-02-24 17:41:11 proto_major: 0 proto_minor: 1 hash: \x53e7c583704774d539934a1fc02f4ba04579e744157d4feb24d56f7cef201cd4Block Operator
vrf_key: op_cert: op_cert_counter: