Block details.
Epoch: 25 Number of transactions in block: 1 slot_no: 558053 epoch_slot_no: 18053 block_no: 557980 slot_leader_id: 12 size: 1354 time: 2018-01-31 02:02:31 proto_major: 0 proto_minor: 1 hash: \xb4943c3866576f12463c079d53348e76fb9307c1057073fe9768cd4694401e8eBlock Operator
vrf_key: op_cert: op_cert_counter: