Asked and answered.

Signing computes your photo’s cryptographic hash, its perceptual fingerprint, and an embedding, then seals them with a timestamp in the Priorframe registry. You get back a signed copy with a Content Credential embedded, and its pixels are untouched, so it looks exactly the same. The record proves this exact image, looking exactly this way, was in your hands at that moment.

C2PA is the open standard behind Content Credentials, the industry standard for content provenance, developed by a coalition including Adobe, Google, Microsoft, and OpenAI. In July 2026, Priorframe was independently assessed under the C2PA Conformance Program and approved as a conformant Generator Product at Assurance Level 1. Every protected image you sign carries Content Credentials, and Priorframe is listed on the official C2PA Conforming Products List, the same public registry that lists products from Google, OpenAI, Amazon, and Qualcomm. You can view our official listing on the C2PA site.

Yes. We store the image you upload plus the derived data, meaning the hash, fingerprint, and embedding, so that monitoring and verify pages work. You can delete any record or your whole account, and deletion removes images and derived data within 30 days.

You get an alert with the evidence arranged: your original and the found copy side by side, the similarity score, where it appeared, and when we first saw it. From there, one tap drafts a takedown letter from your record. Nothing sends without you.

Sometimes, and we are honest about the limits. Embedding matching flags derivatives that stay close to your composition or subject, each with a similarity score. It is a probabilistic signal, not a verdict, and strongly transformed work can escape it. Nobody can honestly promise otherwise, so we do not.

No. In most countries you own copyright automatically when you create a work. Priorframe gives you evidence of priority: an independent, timestamped record that you published first. Formal registration, where it exists, still matters for certain legal remedies. The two work well together.

That is the one unforgivable act on Priorframe. You may only sign work you own or are authorized to sign. False claims of ownership are grounds for immediate termination, and the record trail makes false claimants easy to identify.

They gain nothing and risk a lot. A Priorframe record proves possession at a moment in time, not authorship, which is why we say “prove you had it first.” A stolen photo almost always exists online before the thief registers it, so the real creator’s earlier evidence wins any dispute, and the thief has created a timestamped, account-linked record of holding your file. The registry also checks new registrations against existing ones: identical files belonging to another user are blocked outright, near identical ones are flagged as contested, and images that already appear widely online carry a note on their verify page. Takedown requests from flagged records require a sworn ownership statement consistent with the DMCA’s penalty of perjury rules, and misuse is grounds for termination under our acceptable use policy.

That is exactly what perceptual fingerprints are for. Crops, mirrors, filters, re-encodes, and screenshots usually still match. Heavy transformations reduce confidence, and the similarity score tells you honestly how strong each match is.

We scan the web: public image hosts, the public surfaces of social platforms, marketplaces, and the open crawl. New work is scanned right away, pinned work is watched closely week by week, and the rest of your library is covered in rotation. We cannot see inside private accounts or closed apps, and we say best effort on purpose.

A preview of the photo, its content hash, the signing timestamp, your public display name, and the record status. Nothing else. Not your email, not your location, and no camera metadata.

When a match is confirmed, Priorframe drafts a letter from your registry record, ready for the platform where the copy appeared. You review it and you send it. The letters are self-help templates, not legal advice, and Priorframe is not a law firm. For serious disputes, bring the record to a lawyer.

A web app today, with Android and iOS apps on the way so you can sign photos the moment you make them. Verify pages and the free Content Credentials checker work in any browser with no account at all.

Pro is $9 a month or $84 a year with 1,000 photos per month and 25 pinned works watched closely. Studio is $29 a month or $290 a year with 10,000 photos per month, 100 pins, batch protection, and API access. Full details are on the pricing page.

Yes, completely. Deleting your account removes your images, hashes, fingerprints, embeddings, and personal data within 30 days, and from backups within 90 days. Verify pages for your records are unpublished at the same time.

No and no. Your uploads are processed only to provide the service: signing, matching, and verify pages. We do not sell personal data, and we do not use your photos to train generative models. The privacy policy spells this out.