Block details.
Epoch: 28 Number of transactions in block: 3 slot_no: 621655 epoch_slot_no: 16855 block_no: 621580 slot_leader_id: 8 size: 1713 time: 2018-02-14 19:23:11 proto_major: 0 proto_minor: 1 hash: \x37e2cce0b65e177a465835a0a078fe6edef6ebd7e93e56d2dc13119abd85eef4Block Operator
vrf_key: op_cert: op_cert_counter: