Evident Tool Timestamps Files Locally Without Uploading Them to Any Server

A new open-source utility called Evident allows users to prove a file existed at a specific point in time without ever uploading it to a third-party server. Instead of transmitting the file itself, the tool computes a cryptographic hash locally on the user's device and sends only that digital fingerprint to Evident's infrastructure. The hash is then recorded in a secure ledger and signed by a Time Stamping Authority, generating a verifiable PDF report as legal proof of existence. Evident offers four service tiers ranging from a free basic plan for personal use to an enterprise tier with encrypted audit storage and an identity tier supporting user-owned digital signatures. The project is open-source, with code and documentation available on GitHub, and is aimed at developers, artists, and legal professionals seeking privacy-preserving document verification.