The Best File Timestamp Solution on Blockchain
Connect Your Account
Login or Register in with your Email or Web3 Wallet 🔑
Add Your Information
Enter Legal Information to Prove your Authorship 📝
Upload Your File
Select a File with No Size Limit in 110 Accepted Files Types 📤
Get Your Certificate
Receive your Certificate of File Timestamp on Blockchain 📜
Download Your File
Access Your Timestamped File 24/7 via Secure Storage 🔒
Timestamp Over 110 Files Types
5 to 20 Years Secure Data Storage
File Integrity Verification
SHA-256 is a secure hashing algorithm that generates a unique 256-bit fingerprint to verify data integrity and provide immutable proof of origin.
We help content creators and businesses to protect their digital files or any data in our secure dedicated storage to provide irrefutable proof of authorship with certificate of decentralized timestamp minted by Paterfy.
14+ Blockchains Accepted
Major Chains Compatibility
Ethereum
Arbitrum
Avalanche
Polygon
Harmony
Binance
Celo
zkSync
Solana
Optimism
Cardano
Gnosis
Stellar
Scroll
Tron
Sonic
Lifetime Blockchain Proof
SHA256 of Your File is Timestamped For Life with a Transaction Hash on Blockchain Input Data
Paterfy is an expert in generating Blockchain Proof to certify the paternity of your files, visible directly in native blockchains explorers to get a decentralized proof of your content creation or digital data.
Choose one of your favorite blockchains to protect your content: Ethereum, Binance Smart Chain, Ethereum Classic, Celo, Avalanche, Cardano, Arbitrum, Optimism, Harmony, Sonic, Base, Gnosis, zkSync, Scroll, Tron, Solana. You don’t need Cryptocurrencies to use our service.
Declare Legal Identity
Email Verification
Add an email address and request then to send our special verification link in your mailbox.
First & Last Name or Company Name
Declare your first & last name or company name to prove your ownership.
Personal or Company Legal Documents
Submit your personal or company legal documents to confirm authorship.
Obtain Declared Identity Status
Send required informations to get Declared Status and have it in all your certificates.
Official Paterfy Certificate
Get a File Timestamp Certificate on Blockchain to Prove your Data Authorship.
Our certificate of file timestamp certify both creation date and author of any file. Issued by our trusted independant company, it ensures authenticity, prevents tampering, provides legal proof of your authorship and strengthens legal protection against copying.
Secure your digital content with our certified timestamp, proving authorship and integrity of your data to prevent disputes or fraud.