ExtraProof

ExtraProof Verify · free

Check a record.

Select the ExtraProof record and its associated file. Verify shows whether the record is unchanged and matches the submitted version. Files are checked directly in your browser.

Check formats and browsersHelp with file selection and errors

ExtraProof JSON up to 16 MiB or an original ExtraProof PDF up to 32 MiB. Files are read locally only.

Original file · up to 64 MiB · its contents stay in this browser

Independently compare the signing key

Use only a fingerprint obtained from an independently verified source. A fingerprint copied from the same record does not establish trust.

Extraara is a member of the Content Authenticity Initiative.

C2PA interoperability in development

Standards and trust
Content Authenticity InitiativeExtraara