Block details.
Epoch: 30 Number of transactions in block: 5 slot_no: 668883 epoch_slot_no: 20883 block_no: 668806 slot_leader_id: 3 size: 2464 time: 2018-02-25 17:45:51 proto_major: 0 proto_minor: 1 hash: \x6b6c2871876ab5573855b7d1679755e66adcc1d343d16e974c375ed20d35b2f9Block Operator
vrf_key: op_cert: op_cert_counter: