Meaning
Cryptographic or mechanical record establishes the exact moment a digital event occurred. A verifiable sequence of characters or data points linked to a specific time source proves the existence of a file or transaction at a particular point in history. This timestamp proof provides a temporal anchor in records, preventing the backdating of claims or the falsification of the order of events.
The resulting data structure links the content of a document to a specific time value in a way that is computationally difficult to alter.
Authority Source
Trusted third-party servers or distributed ledgers provide the external reference used to validate the time. Because internal system clocks can be altered, a timestamp proof from an independent source carries more weight in a dispute over priority or deadlines.
Integrity Check
Hashing the document content alongside the time data ensures that even a single bit of change in the record would invalidate the proof. This mechanism allows a founder to demonstrate that a design, a contract, a physical shipment, or a communication has remained untouched since the timestamp proof was applied.
Record Value
Proving that an idea or a signature existed on a certain date is often the only way to win a priority dispute. The cost of generating a timestamp proof is low, but the cost of lacking one is the total loss of the ability to prove the timing of a critical action.