Block details.
Epoch: 31 Number of transactions in block: 3 slot_no: 673999 epoch_slot_no: 4399 block_no: 673922 slot_leader_id: 8 size: 1888 time: 2018-02-26 22:11:11 proto_major: 0 proto_minor: 1 hash: \xa02ef79be8eecdcc9306b32136c430c7d49223b5385d4152102f71ae5b50383eBlock Operator
vrf_key: op_cert: op_cert_counter: