Block details.
Epoch: 30 Number of transactions in block: 2 slot_no: 668781 epoch_slot_no: 20781 block_no: 668704 slot_leader_id: 8 size: 1379 time: 2018-02-25 17:11:51 proto_major: 0 proto_minor: 1 hash: \x4bf8c6a2c9b1e478c7dbd35c0955351b1aaa61211aab2bcfb366698a1e3e6981Block Operator
vrf_key: op_cert: op_cert_counter: