Block details.
Epoch: 197 Number of transactions in block: 1 slot_no: 4259738 epoch_slot_no: 4538 block_no: 4257586 slot_leader_id: 4 size: 995 time: 2020-06-05 22:57:31 proto_major: 1 proto_minor: 0 hash: \xb7c0d901c727aba5080fe836598b792259264ac8d00c1102c76cf8c2d2e7f2ceBlock Operator
vrf_key: op_cert: op_cert_counter: