Block details.
Epoch: 29 Number of transactions in block: 1 slot_no: 646331 epoch_slot_no: 19931 block_no: 646255 slot_leader_id: 7 size: 1207 time: 2018-02-20 12:28:31 proto_major: 0 proto_minor: 1 hash: \x54147d295bc9ef00998118ca08b3c266b2f2c529fb9ad177a40ec0c0d1e0647fBlock Operator
vrf_key: op_cert: op_cert_counter: