Stellar File Notary
A free, standalone way to prove a file existed at a point in time - built on Stellar, requires the Freighter wallet. Currently running on Stellar testnet.
Notarize a file
We hash your file in your browser - the file itself never leaves your device - and anchor that hash on Stellar with your wallet. Anyone can later prove the file existed, unmodified, at that point in time.
Verify a notarization
Pick the same file and paste the Stellar transaction hash you got when it was notarized. We'll re-hash it locally and compare it against what's on-chain.
