Block details.
Epoch: 28 Number of transactions in block: 1 slot_no: 612721 epoch_slot_no: 7921 block_no: 612646 slot_leader_id: 3 size: 985 time: 2018-02-12 17:45:11 proto_major: 0 proto_minor: 1 hash: \xae6bccc51288f7aacc318ff127055aae9b5f662f0e4e1c272f0e59af7784c56eBlock Operator
vrf_key: op_cert: op_cert_counter: