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Sign an article free. See what the record proves.

The label shows who signed your article, when, the terms you set, and whether the words still match. Try it below with no account.

Edit it or paste your own.

What the label will say

Signed by
Encypher demo identity
AI use
No declaration added
Visible change
None. Every word stays.

Signing and the check take a few seconds.

Signing runs against the public APIAPI: Application programming interface: a way for one program to ask another to do a job, such as sign a file.. If live signing is down, the panel says so and shows a recorded sample, with no new verification claimed. The recorded walkthrough shows the same steps end to end.

More demos: try it yourself, no accountfor AI teamsAI chatbot with signed answersprivate team walkthroughAuthorized Supply (Ad Tech)

Check it where it travels.

Anyone can check a signed article on any site: yours, an aggregator, a partner. The check reads the signature. It does not guess.

Four of the five answers a provenance check can give: Verified, Modified after signing, Issuer not recognized, and No provenance found. The fifth is Could not verify.
A check reports who signed and whether the content changed. It never says whether the content is true.
  • It shows who signed and whether the signed words still match.
  • It does not establish authorship, ownership, or that a later use was allowed.
  • A file-level C2PAC2PA: The Coalition for Content Provenance and Authenticity: the group that publishes the open standard for content labels. signature stays checkable while the file, its label and its certificate chainCertificate chain: The links from a signer's certificate up to a root authority a checker already trusts. are kept.
  • Marker recovery still depends on the format and the transformation: a retype, a paraphrase, or a conversion that strips invisible characters removes the text markers.

Check pages as you read with the Chrome extension.

What it costs.

Signing
$0 for your site and new work, within the fair-use guardrails.
Checking
Public verification is free for everyone with no account.
Your archive
Signing your own archive yourself with the API is part of free publishing signing under the fair-use guardrails. A managed bulk backfill that Encypher runs for you is a paid add-on.
Licensing
Encypher takes no share of a deal you make yourself. No plan includes a licensing deal or promised revenue.

Built on the open standard.

Text, images, audio, video, documents and fonts can all carry a label: in text it rides in the characters, in every other format it sits inside the file.
Text carries the label in its characters. Images, audio, video, documents and fonts carry it inside the file.
Text standard
We wrote the C2PA standard for labeling text, published January 8, 2026, and co-chair its task force.
Formats
75+ formats you can sign and verify. 20 of them pass the C2PA Conformance ProgramC2PA Conformance Program: The C2PA's test that checks a product builds and reads labels the way the standard says before it is listed as conforming..

Keep reading

Create. Mark. Endure.

Sign your next article, then your archive, and keep a dated record of what you published.

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