Drop a file here, or click to choose
The file is hashed in your browser with SHA-256. It is never uploaded anywhere.
How it works
- Your browser reads the file locally and computes its SHA-256 hash. The file itself never leaves your computer — there is no upload, ever.
- The hash plus your metadata is embedded as a memo in a Solana transaction and signed by your wallet.
- Once confirmed, the transaction permanently timestamps the file's fingerprint on the Solana ledger. Anyone can later re-verify the file by recomputing its hash and comparing it to the on-chain record.
Drop the file you want to verify
Hashed locally, then compared against the on-chain record.
Notarizations made on this device
Stored in this browser's localStorage only — export to keep a permanent copy.