Online timestamping
Timestamp a document online, right now.
Open the WebApp, choose your document, photo or video, add a comment and submit: you get timestamped proof of existence, anchored on a blockchain. The first proof is free, no credit card needed.
Choose or capture
Documents, photos, videos. Or take a photo or video directly in the app.
Add the context
A comment, tags, a folder. To organise your proofs and find them easily.
Submit
You receive a PDF certificate attesting to the file's existence and integrity on the anchoring date and, for a capture made in the app, the geolocation recorded at that moment.
On mobile
Even stronger with in-app capture.
On iOS and Android, take the photo, video or audio directly in the app. The content is born inside Proov-It, dated and geolocated: this is the strongest proof.
1 · In-app capture
2 · Context
3 · Certificate
Does it hold up in court?
In France, where Proov-It is based, evidence may be brought by any means unless the law requires a specific form of proof (Article 1358 of the French Civil Code). The EU eIDAS Regulation, which applies in every Member State, adds a non-discrimination principle: an electronic timestamp cannot be denied legal effect solely because it is not qualified (Article 41). In 2025, the Marseille judicial court (20 March 2025, RG 23/00046) relied on blockchain timestamps, recorded by a bailiff and supported by other evidence, to establish the prior existence of creations. It is a first-instance decision: it does not make a blockchain anchor sufficient evidence on its own.
A Proov-It certificate can be produced as evidence; the court assesses its weight. We attest to the anchoring date, the integrity of the file and, for a capture made in the app, the recorded geolocation, not the truth of its content.
Keep reading
Related pages
How it works
Choose or capture, add context, submit: SHA-256 hash, RFC 3161 timestamp, blockchain anchoring. Plus how anyone can verify the certificate.
Pricing
Individuals: 1 token = 1 proof, no subscription. Businesses: Starter, First, Pro and Premium with proofs included, two months free on yearly billing.
Online proof for individuals
Neighbours, rentals, purchases, creations: prove the prior existence and integrity of any content.
Timestamped photo evidence
eIDAS Article 41, national rules of evidence, the court's assessment: what gives a photo weight as evidence, and how a timestamp makes it stronger.