Independent evidence of existenceContent Credentials Ready

Copyright protection.

Prove it's yours.

Registering your work with us immediately generates a digital certificate with a unique reference number and the date it was registered, providing independent, credible proof of your copyright under your country's copyright legislation.

Public verification, no account required · Verifiable in 179 countries

Verifiable digital evidence with international scope, generated at the moment of registration.

SHA-256 encrypted
GDPR compliant
Public verification, no account required
Public blockchain anchoring

Every sealed work is batched into a Merkle tree whose root is written to Polygon. A work is labelled as anchored only once the transaction confirms.

Copyrightproof

PROOF OF COPYRIGHT OWNERSHIP

Digital Protection Certificate

Nightwater — album master

Music recording · album-master-final.wav · 393.2 MB · audio/wav

This work, 'Nightwater — album master', obtained a proof of authorship that protects its copyright. This proof of authorship meets the requirements established by the Berne Convention for automatic copyright protection across its 179 signatory countries.

Sealed

SHA-256 encrypted (SHA-1 / 256 / 512)
Trusted timestamp
Public blockchain anchoring
Public verification, no account required
GDPR compliant

Scan to verify

Verification code

CP-2026-0F3A91

Trusted timestamp

Mon, 24 Aug 2026 11:04:52 UTC

Copyrightproof TSA — RFC 3161 ready

Policy 1.3.6.1.4.1.60123.1.2 · SHA-256

Serial 6B0D3AE807A4BD8A

Rights & licence

Antonio Donaire — 70% · Lena Krauss — 30%

Cryptographic fingerprints

SHA-1bc5e613f583f66f13d7e03cf3b4e1fed0378e285

SHA-2565ef04b157e59c846068689f0f8ccb52325c3e99684670c55535f93dc2dad59ec

SHA-512

5ef04b157e59c8dddd995a2763dfe6fbed4b611e0cef84dd8888cc0b3aba023bee341eb083ddb691881d95d112efab972e33a58321564ca7c495c0480ccb7afa

Recompute any of these hashes on your copy of the file. If they match, the file is byte-identical to the one sealed above.

View full certificate

Built for the AI era

Blockchain timestamp

Every certificate is anchored to a public blockchain — court-grade tamper-evident proof.

SHA-256 file fingerprint

A unique cryptographic ID derived from your file. Printed on the certificate.

Content Credentials

We build on the C2PA Content Credentials standard.

If the work is yours, protect it before publishing, sending, or negotiating it.

Protection by type of work

We seal any file. These are the areas where Copyrightproof is used most.

Film & Audiovisual

Screenplays, pitch decks, short films, documentaries, animation.

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Photography & Visual Art

Photography, illustration, digital art, paintings, 3D renders.

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Music & Audio

Songs, compositions, lyrics, podcasts, sound design.

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Writing & Literature

Novels, manuscripts, articles, poetry, non-fiction.

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Design & Software

Graphic design, logos & branding, source code, apps.

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Digital Content Creators

YouTube, TikTok, Instagram content, podcasts, digital campaigns.

Learn more

48,912

Works sealed

6,140

Creators & studios

20+

Supported formats

99.98%

Verification uptime

Three steps, under two minutes

Upload, declare, and receive a sealed certificate you can share with anyone.

Upload or hash locally

Your file is fingerprinted with SHA-1, SHA-256 and SHA-512. You choose whether we keep an encrypted copy or only the fingerprints.

Declare rights and metadata

Add title, work type, co-authors, contribution shares and the licence you intend to apply.

Receive a sealed certificate

A trusted timestamp, verification code and QR are bound to your fingerprints. Anyone can check them on the public verification page.

Protected Before You Share

Seal the file first, then send it. The certificate and its public verification link travel with the delivery, so the client, label or publisher receives the work already documented.

Built for people who ship creative work

Tamper-evident fingerprints

Change a single byte and every hash changes. That is what makes a re-check meaningful years later.

Trusted timestamping

Seals are designed for RFC 3161 timestamp authorities so the moment of sealing is attested by an independent third party.

Public verification

Share a code or QR. Anyone can confirm the fingerprints, sealing time and declaration without an account.

Portable evidence pack

Download a certificate and a machine-readable evidence file to attach to contracts, takedowns or filings.

Team and client workspaces

Studios, labels and agencies can register on behalf of clients with clear audit trails.

Careful, honest language

We never promise courtroom outcomes. We give you documented facts about existence and integrity.

Quiet confidence, on the record

“A client tried to reuse plates outside the agreed licence. I sent the sealed record and the conversation ended in a day.”

Marta Ibáñez · Illustrator, Valencia

“We seal every master before it leaves the studio. It costs nothing and it has already saved one negotiation.”

Tom Whitfield · Producer, Bristol

“The honest wording is why we adopted it. It documents facts instead of promising outcomes.”

Núria Sanchís · IP counsel, Barcelona

Illustrative examples.

Seal your next delivery before you send it.

Starter plan includes five sealed works. No card required.