Copytok timestamps your videos, writing, patents, and art on a public blockchain the moment you create them — so no one can quietly claim your work, and you never have to prove it twice.
No public upload. No wallet required. Just a certificate.
If it can be a file, it can be timestamped. Copytok doesn't care what format your idea takes — only that the moment it existed is on record.
Films, footage, edits, animation, and raw cuts before they ever leave your drive.
Manuscripts, scripts, articles, lyrics — the exact draft, the exact day.
Contracts, decks, proposals — anything you need a clean paper trail on.
Research, technical papers, and proposals — dated before anyone else reads them.
Filings, disclosures, and invention records — proof of the moment an idea took shape.
Photography, illustration, design, and artwork, from sketch to final file.
Nothing about creating a certificate should slow you down, or expose your work before you're ready to share it.
Drop in your file. It stays private — we never publish, preview, or share it with anyone, including ourselves.
We turn your work into a one-of-a-kind proof phrase, a short string of words like a wallet's recovery phrase, and anchor it to a public blockchain, permanently and unalterably.
You receive a certificate anyone can independently verify — without ever seeing the work it protects.
Every certificate starts with a proof phrase, a short run of words that could only come from your exact work, the same idea behind a crypto wallet's recovery phrase. Type something below and watch one generate, right in your browser.
This happens locally in your browser. Nothing you type here is stored or sent anywhere.
Copytok doesn't keep the record in a database we could edit later. It's anchored to a public ledger, which is what makes the date defensible.
You finish a draft, a cut, a filing — the moment your work exists.
A proof phrase is generated. Change one word later and it won't match.
The phrase is written to a public blockchain — outside anyone's reach to alter.
Anyone, anywhere, can confirm the date without asking Copytok's permission.
"I timestamp every cut before it goes to a client. If a rough edit ever leaks, I can prove which version was mine."
"I certified the manuscript before it went to a single agent. It costs nothing to be safe with three years of work."
"Between the sketch and the filed patent there's a gap. Copytok covers that gap with a record I can point to."
"Reverse image search only tells you a copy exists. This tells you, provably, whose file came first."
"We certify findings the day we write them up, long before submission. It's a quiet form of insurance."
"Every stem I send out gets certified first. It's five minutes, and it's the difference in a dispute."