About

What it does

You give it a file, a piece of text or a crypto wallet address. It records the SHA-256 fingerprint in an append-only, hash-chained public ledger and asks an independent timestamp authority (freetsa.org) for an RFC 3161 token.

Anyone can later check that the same fingerprint was on the ledger at that moment, and that the ledger has not been altered since.

What it does not prove

A fingerprint shows that some exact content existed by a given time. It does not prove who created it, whether it is true, or when it was first written. Names entered on the site are self-declared and not verified.

Evidence we collect

When a saved record no longer matches its SHA-256 code, or someone submits data that doesn't match a fingerprint, uses an invalid key or tries to break in, we save it as evidence: what was submitted, what the ledger expected, the time, the IP address and the browser details. Tampered wallet records are kept as a full copy before a fresh snapshot is added to the ledger.

Who runs it

Fingerprint Registry is run by Yannick Langlois. You can reach us at 8samples8@gmail.com.

Creator's certificates

Yannick Langlois has completed the following university courses:

• Forensic Accounting and Fraud Examination

  West Virginia University

• International Organizations Management

  University of Geneva

• International Security Management

  Erasmus University Rotterdam