Block details.
Epoch: 29 Number of transactions in block: 1 slot_no: 637992 epoch_slot_no: 11592 block_no: 637917 slot_leader_id: 3 size: 1030 time: 2018-02-18 14:08:51 proto_major: 0 proto_minor: 1 hash: \xc0503172d6f7663ddd8c75587a84776be1ef13399102893c684e3c9a31a8f3d8Block Operator
vrf_key: op_cert: op_cert_counter: