Block details.
Epoch: 90 Number of transactions in block: 1 slot_no: 1960655 epoch_slot_no: 16655 block_no: 1959173 slot_leader_id: 13 size: 991 time: 2018-12-21 18:16:31 proto_major: 0 proto_minor: 2 hash: \xc5170818a7a4b50c280226fc6356043b73dbd65faa3b83c56ca6cb2da4afc768Block Operator
vrf_key: op_cert: op_cert_counter: