Block details.
Epoch: 30 Number of transactions in block: 1 slot_no: 661916 epoch_slot_no: 13916 block_no: 661839 slot_leader_id: 3 size: 1892 time: 2018-02-24 03:03:31 proto_major: 0 proto_minor: 1 hash: \x605fcf1bc62dc1455c54d8e0b954a78462e5c6c009bee3c935df0d0f0489b64cBlock Operator
vrf_key: op_cert: op_cert_counter: