Guides
Provenance, in plain English
Short, honest guides to timestamping your work, proving you made it, and checking what other people send you. No jargon, no hype, and clear about what a stamp can and can't prove.
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How to timestamp a file for free
Drop a file in your browser, get a permanent record in 30 seconds, and see how the old methods compare.
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How to prove you made something first
For creators, writers, and AI-assisted work: the poor man's copyright myth, and what a timestamp really proves.
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C2PA and Content Credentials, explained
What the standard behind those 'CR' labels records, who backs it, where it breaks, and how hash stamps fill the gap.
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How to check if a file is authentic
For anyone sent a suspicious document: run the free check, and read a match, a conflict, or no record honestly.
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Blockchain timestamping: options compared
OpenTimestamps, OriginStamp, a notary, and Mark, compared fairly on cost, effort, identity, and durability.
Building for compliance instead? See the EU AI Act Article 50 guide, or head straight to the API and MCP docs.