Co-Chair, C2PA Text Provenance Task Force
Encypher signs your text, images, audio, video, and files with provenance anyone can check for free, in seconds, with no account. Publishers, AI teams, public bodies, and enterprise teams all use the same independent infrastructure.
No account needed for a public check. Signing starts free.
From creation to proof
Four stages, one signed record.Create
Text, media, or an AI answer
Mark
Hidden mark
Travel
Copied, scraped, syndicated
Verify
Anyone, free
Author and Co-ChairC2PA Text Provenance Task Force
85+file formats: text, images, audio, video, PDF, and Office
Freeanyone can check a signed file, no account
Four ways in
Pick the one result your team needs to show first.
Sign every story free under your own name, and let readers check the source in one click. Signed stories then become more valuable verified inventory for advertising, licensing, and building trust in your brand.
Sign your first story freeSign your final AI output so every customer can run a public check themselves. Meter partners can also build a shared source-use report for licensing and review.
Start your first signed AI runSign notices, reports, and public records under your own name. Then anyone can see who issued a file and whether one word changed.
Sign your first public noticeTurn your AI policy into a control you can show. Keep the gaps in plain view, and give product, legal, security, and risk teams one signed result to read.
Prove your first AI appTry a signed text sample
Sign a line of text below, copy it, change a word, then run the check and watch what the proof says.
Sample article pre-filled. Edit it or paste your own.
Free to try
Paste your text and go. No account, no setup.
Invisible to readers
The mark is hidden inside the text. Anyone reading it sees exactly what you wrote, nothing different.
Anyone can check it
It uses an open standard Encypher helped create, so anyone can confirm where the text came from.
Mark, Meter, and Trace
Mark writes the record and signs it with an identity anyone can check. Meter ties that record to reported source use. Trace matches a leaked copy back to the person you sent it to.
Sign AI output, published work, and official files so anyone can verify who sent them and whether they changed.
Available now02Bring signed sources, reported usage, rights terms, and open questions into one shared report.
Early partner program03Give every recipient a distinct marked copy and identify the send record behind a leak.
Available nowDo not take our word for it
The official C2PA Conforming Products List records Encypher as a conformant generator product at assurance Level 1, with generation and validation coverage across 20 media types (conformance dated May 26, 2026). Encypher's claim-signing and timestamp authorities appear on the official C2PA Trust Lists.
Open standards. Anyone can check.
Start with one file or answer.
Sign your first file free in a few minutes. Need it wired into a newsroom, an AI product, or a company rollout? Talk to us.
Built on the C2PA open standard
Encypher authored the C2PA standard for unstructured text and co-chairs the Text Provenance Task Force alongside these member organizations. Logos indicate C2PA membership.
