Point Nora at the folders you care about. On every run it fingerprints any new or modified file and registers that fingerprint on the Bitcoin blockchain — a tamper-proof record of when the file existed, in exactly that form.
You never know which files will matter later. A contract, a draft, a photo, a spreadsheet — most likely you'll never need to prove anything about them. But for the few you do, having a tamper-proof record of when the file existed, in exactly that form, can be the difference between a clean resolution and an expensive one.
Nora is a desktop application that creates those records. It monitors a folder you choose, fingerprints each file with a SHA-256 hash, and permanently registers that fingerprint on the Bitcoin SV blockchain. The proof is yours forever, independent of Nora or any third party.
Register originals, compositions, and recordings — version by version — before a dispute or a pitch.
Anchor case exhibits and client files to a verifiable point in time. If a document's authenticity is later questioned, the blockchain record settles whether it has been altered since registration.
Contracts, proposals, applications, communications — if it matters, register it.
Set a folder and walk away. Nora registers every new or modified file.
SHA-256 fingerprints registered on the Bitcoin blockchain cannot be altered or deleted. Ever.
Your files never leave your computer. Only a cryptographic fingerprint is sent to the blockchain.
Anyone can verify a file's registration using just the file and the blockchain record — Nora optional.
Local simulation mode lets you evaluate the whole workflow before signing up for anything.
Registration statistics, daily activity chart, searchable file database, and full CSV export.
Free. Open source. Linux, Windows, and macOS.
Questions or running into setup snags? Join the Telegram group
