Block details.
Epoch: 30 Number of transactions in block: 2 slot_no: 668778 epoch_slot_no: 20778 block_no: 668701 slot_leader_id: 3 size: 1991 time: 2018-02-25 17:10:51 proto_major: 0 proto_minor: 1 hash: \x1931d8aefaaecff9bfb9f7e694e5206c3723bae7ce1fbe69ce746b6fc29ae36dBlock Operator
vrf_key: op_cert: op_cert_counter: