For verifiers

Accept the certificate.
Keep your standard.

For journals, contests, and publishers — accept the Handmark certificate. Free. Your cost is zero; your gain is a defensible policy.

What you receive

A record you can explain.

The certificate travels with the work. It shows what AI contributed, what the author decided, and where human expression begins.

Clear policy

A visible standard for accepting assisted research without accepting generated prose.

Signed record

Built on C2PA, the open standard behind Content Credentials.

Zero cost

No account, integration, or review fee for the verifier.

Sample certificate

Inspect the evidence before you set the policy.

This sample shows the fields a verifier can review at a glance: coverage, human-typed expression, AI role, and signature status.

Request a sample certificate
Handmark seal

Content credential

Handmark Certificate

68491b90-2ef9-403a-8cb0-cd7817629175 + 06/17/2025 13:43:15

Grade A+ · Instrumented editor · Coverage 100% · Human-typed 1,840 words · Signature valid.

The certificate proves the recorded process and states its coverage.

C2PA Content Credentials compatible

WORK LEDGER

A detailed work effort ledger for every authored document

Handmark certificate showing a detailed work effort ledger

Make the policy legible

Give honest authors a clear way through.

Contact the verifier team