Block details.
Epoch: 91 Number of transactions in block: 1 slot_no: 1977960 epoch_slot_no: 12360 block_no: 1976478 slot_leader_id: 7 size: 1026 time: 2018-12-25 18:24:51 proto_major: 0 proto_minor: 2 hash: \xc86dfa62b578ba30084abdf819c9c01b1b3412b633dd79145549dcb6b5d5d9dfBlock Operator
vrf_key: op_cert: op_cert_counter: