Verify the authenticity of a deposit certificate
Each Copyright01 deposit generates a timestamped proof of prior existence, verifiable at any time. Enter your code or hash to confirm a certificate's authenticity.
Copyright01 issues deposit certificates compliant with the Berne Convention (181 countries). Each certificate contains a unique verification code and a digital fingerprint (SHA-256 hash) that guarantee the integrity and creation date of your work.
By verification code
By fingerprint (hash)
Paste the SHA-256 hash of your file to check if it has been deposited.
Each Copyright01 certificate contains a unique code, a QR code, and a SHA-256 fingerprint. These elements guarantee the authenticity and integrity of the deposit, verifiable at any time on this page.
Frequently asked questions
How do I verify a Copyright01 certificate?
Enter the verification code (found on the PDF certificate and QR code) in the field above. You can also paste the SHA-256 hash of your file to find the corresponding deposit. The result displays the title, certification date, and a link to the full certificate.
What is a SHA-256 hash?
SHA-256 is a cryptographic algorithm that generates a unique 64-character digital fingerprint for each file. Two identical files always produce the same hash, but even the slightest modification produces a completely different result. This property guarantees that your file has not been altered since its deposit.
Is a Copyright01 certificate legally valid?
Yes. Copyright01 provides proof of prior existence compliant with the Berne Convention, recognized in 181 countries. The timestamped certificate, combined with the cryptographic hash of the file, constitutes admissible evidence to establish the creation date of a work.
How do I obtain a deposit certificate?
Create a free account on Copyright01, then upload your file or the URL of your online content. The system automatically generates a PDF certificate with a verification code, QR code, and SHA-256 fingerprint. The first 3 deposits are free.
How long is a certificate valid?
A Copyright01 certificate is valid indefinitely. The proof of prior existence and cryptographic fingerprint are preserved permanently. You can verify your certificate's authenticity at any time on this page.
