Prove When You Had It.
Before You Share It.
Timestamp your designs, photos, code, and writing on the Cardano blockchain. Create a verifiable proof of when your work existed. Your original never leaves your browser.
The Creator's Dilemma
Copyright Is Automatic, But Hard to Prove
In most countries, copyright exists the moment you create an original work. You don't need to register it. The difficulty is proving when you created it. Without a reliable timestamp, a dispute becomes your word against theirs. Screenshots, emails, and file metadata are all trivially fakeable.
Creative Theft Is Rampant
Every freelancer has a story: a design shared with a client appears on their website, redesigned just enough to deny copying. A photographer finds their images on stock sites. A developer discovers their open-source code in a proprietary product without attribution. Proving you had it first is the hard part.
Traditional Copyright Registration Is Slow and Costly
Registering a work with the US Copyright Office costs $65 to $85 per work and takes 3 to 7 months to process. For prolific creators (designers who produce dozens of works per month, photographers with thousands of images), this doesn't scale. You need something faster, cheaper, and always available.
Cardano Blockchain Proof of Creation
Fast, Immutable Timestamps
CommitProof creates a cryptographic fingerprint (SHA-256 hash) of your work description and writes it to the Cardano blockchain. The timestamp is permanent, publicly verifiable, and cannot be altered by anyone, not even CommitProof. It takes less than a minute and costs about $1.
100% Client-Side Privacy
Unlike services that require you to upload your files to their servers, CommitProof hashes your text or file entirely in your browser. Your creative work never touches a server, is never transmitted, and is never stored by anyone but you. Only the hash, an irreversible fingerprint, goes on-chain.
How It Works
Enter your text or upload a file: a description of your invention, your creative work, or your startup idea.
Your browser computes a SHA-256 hash with a random salt. Your original never leaves the device.
The hash is written to the Cardano blockchain as transaction metadata: timestamped, permanent, tamper-proof.
Download your proof file (PDF or JSON). Share it later to prove what you knew and when.
Who Benefits From Proof of Creation?
Designers and Illustrators
Timestamp your concepts before sharing them with clients. Describe the design in detail: layout, color palette, typography choices, unique elements. If a client takes your concept to another designer, you have dated proof that you already had the creative direction on that date.
Photographers
For each important shoot, timestamp a description of the images: location, subject, date, camera setup, and unique compositional choices. This creates an independent record that can support takedown requests and licensing disputes when your images appear without permission.
Software Developers
Timestamp descriptions of novel algorithms, architectural approaches, or product concepts before sharing them publicly. For open-source projects, this gives you a dated record that you had the core concepts at that time, which is useful when your work is used without attribution or incorporated into proprietary software.
Writers and Content Creators
Timestamp article drafts, book synopses, screenplays, or any written work before sending it to publishers, editors, or collaborators. Plagiarism disputes are common in publishing, and a Cardano blockchain timestamp provides more independently verifiable evidence than a file creation date or email timestamp.
Cost Comparison
| Method | Cost | Time | Works Globally? |
|---|---|---|---|
| US Copyright Registration | $65 to $85 per work | 3 to 7 months | US only |
| Notarization | $50 to $200 | Hours (in-person) | Jurisdiction-dependent |
| Centralized Timestamping Services | $5 to $39 per work | Minutes | Depends on provider |
| CommitProof (Blockchain Timestamp) | 3 ada | < 1 minute | Yes, global and decentralized |
Frequently Asked Questions
Can I timestamp images or files?
Yes. You can upload any file (images, audio, video, PDFs, code archives) or enter a text description. The file or text is hashed entirely in your browser and never leaves your device. For visual work, you can also describe the piece in detail as an alternative.
Does this replace copyright registration?
No. Copyright registration (e.g., with the US Copyright Office) provides legal benefits like statutory damages and attorney's fees in infringement suits. A Cardano blockchain timestamp proves when your work existed, which is valuable evidence, but it's not a substitute for formal registration. In 2025, a French court accepted blockchain timestamps as proof of copyright ownership (AZ Factory v. Valeria Moda). Think of it as a complementary layer of protection: faster, cheaper, and immediately available. More on legal recognition.
What if someone independently creates the same work?
Copyright protects original expression, not ideas. If two people independently create similar works, both can hold copyright. A Cardano blockchain timestamp shows that your version already existed on a given date. This is useful if someone accuses you of copying, or if you need to show your version existed first.
Ready to Timestamp Your Proof?
Create a blockchain-anchored timestamp in under a minute. Your original never leaves your browser.
3 ada per proof. No subscription.