Certify a file
This tool is for individuals. Integrating an agent? See For AI Agents.
Drop any file to create an immutable proof on the blockchain.
Your file stays private - only its SHA-256 hash is recorded on MultiversX.
How certification works
- Select or drag your file
- A unique SHA-256 hash is computed locally on your device
- Sign the transaction with your MultiversX wallet
- Receive a downloadable PDF certificate with QR code