US Patent 10361869 Event ledger

The present disclosure provides a globally accessible, un-forgeable, and permanent repository of published events in the form of an event ledger. A method according to the present disclosure includes receiving a request from a publisher to publish to an event ledger an event including a name of the publisher, a date and time at which the event occurred, a description of the event, and a cryptographic signature of the event signed using a private key of the publisher, receiving a certificate from the publisher including a public key of the publisher, validating the cryptographic signature of the event using the received certificate, and publishing the event to the event ledger.