Prove you had it first.

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.

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 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.

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.

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.