US Patent 11275814 Recording ledger data on a blockchain

This disclosure relates to recording blockchain ledger data. In one aspect, a method includes capturing, by a first evidence-capturing node of multiple evidence-capturing nodes of a blockchain network comprising multiple nodes, network evidence from a target evidence source. A first evidence hash of the captured network evidence is calculated. The first evidence hash is sent to other evidence-capturing nodes. Additional evidence hashes are received from the other evidence-capturing nodes. For each set of matching evidence hashes, an evidence hash group that includes the set of matching evidence hashes is generated. A count number of evidence hashes in the evidence hash group is determined for each evidence hash group. A given evidence hash group having a largest count number is identified. A given evidence hash corresponding to the matching evidence hashes of the given evidence hash group is determined as a trusted evidence hash.