Block details.
Epoch: 40 Number of transactions in block: 1 slot_no: 871597 epoch_slot_no: 7597 block_no: 871500 slot_leader_id: 4 size: 987 time: 2018-04-13 15:57:11 proto_major: 0 proto_minor: 1 hash: \xb17f0873876c08e928ff93b6c9f8f36fbcb046f45bfce8139bf194b663ec6b06Block Operator
vrf_key: op_cert: op_cert_counter: