Block details.
Epoch: 16 Number of transactions in block: 2 slot_no: 354705 epoch_slot_no: 9105 block_no: 354657 slot_leader_id: 6 size: 1390 time: 2017-12-15 00:19:51 proto_major: 0 proto_minor: 1 hash: \xaca67ee0faef886c2927b25ac1e07aca4f0271c6fed2258d0701726c7ef7a88bBlock Operator
vrf_key: op_cert: op_cert_counter: