Block details.
Epoch: 197 Number of transactions in block: 4 slot_no: 4259387 epoch_slot_no: 4187 block_no: 4257235 slot_leader_id: 3 size: 2532 time: 2020-06-05 21:00:31 proto_major: 1 proto_minor: 0 hash: \xd9d891663769010d6af27ab5021fe3dae9204cb7fe931139c0f40db089420d54Block Operator
vrf_key: op_cert: op_cert_counter: