Bismuth is an open-source protocol, created in the world’s most popular & fastest growing programming language.
Website: https://bismuthplatform.com
The DocShield app is a Tornado Bismuth Wallet Extension which lets you hash documents and include the hash (fingerprint) in a BIS transaction.
https://github.com/bismuthfoundation/TornadoWallet/releases/tag/v0.1.43
The Bismuth explorer enables you to check your document hashes on the blockchain.
https://bismuth.im