CrawlCheck

Glossary · Proof and provenance

OpenTimestamps

A scheme that anchors a hash into the Bitcoin blockchain so a document can be proved to have existed at a time. It proves existence and integrity; it proves nothing about whether the content was correct.

Measured live on /proof.

Proof and provenance

Showing a record existed at a date without asking anyone to trust us.

anchoring · Content hash · Manifest tampering · C2PA · CAWG training and data mining assertion · content-addressed storage

anchoring

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