Your files are captured, encrypted, sealed and stored for life. They stay accessible on your own, even without us.
BlockProve doesn't just send a fingerprint of your file to the blockchain: it writes the file itself, encrypted and intact, ready to show a judge ten years from now or tomorrow.
AES-256 encryption on your device, a post-quantum signature, an eIDAS qualified timestamp and permanent storage on the Arweave blockchain. All from your phone or computer.
No subscription to keep your proofs. Free verification, for life.
Every proof is dated by an eIDAS qualified trust service provider. Its date is presumed accurate across the European Union.
Built on standards recognised by courts and governments. And on our own protocol.
In France, evidence is free: you can submit a photo. But the judge alone weighs it, and one sentence is enough to undermine it: “it’s been edited”.
Your word against theirs.
Verifiable by anyone, without us.
We did not just assemble existing building blocks. We designed PCAP (Proof Context & Attestation Protocol), our own protocol, so that a proof depends on no server. Not even ours.
The photo, video or sound is taken in the app. Your phone’s security chip attests that the capture is genuine.
The file is AES-256 encrypted on your device before anything is sent. No one can read it, not even us.
A post-quantum signature and an eIDAS qualified timestamp lock its content and date.
The full file is written to the Arweave blockchain. It stays accessible on your own, even if BlockProve disappears.
Public specification and open-source verifier: anyone can check a proof, with no account and without going through us.
Read the PCAP specificationOn the day of the dispute, it is too late to create evidence. It had to exist before.
Before clearing anything, the damage has to be recorded. The bailiff may take days to come, and your own photos may be disputed by the insurer. Meanwhile, you wait among the debris.
With BlockProve, photograph and film the damage yourself, right away. Your images are dated and sealed: you are no longer stuck waiting on anyone's schedule.
Insulting comments, fake profiles, humiliating posts. One click from their author and it all disappears, before you can even file a complaint.
From your computer, BlockProve web capture records the page, its address and its date in a few clicks, on your own. Your complaint rests on evidence, not a simple screenshot.
The insurer's expert may take weeks to visit. Meanwhile, you can't repair anything without risking erasing the proof of damage.
Film the stains as soon as they appear. BlockProve dates and seals your images: you can start repairs without losing the proof.
A scratch on the floor, a stain on the sofa... At the end of the stay, it's your word against the owner's, and your deposit is at stake.
When you arrive, photograph every room with BlockProve. The condition of the place is frozen, dated and verifiable: enough to settle any disagreement when you leave.
Don't wait to see cracks in your walls to protect yourself. Once the damage appears, you will have to prove it wasn't there before the works.
Photograph your house before the first excavator arrives. If cracks appear, you will have dated proof of its original condition.
The copier claims they designed it before you. Who can prove the date of your sketch?
Register your creations as you go. That is exactly what won a fashion house its case in Marseille.
Deleted messages, closed accounts: without a reliable record, a complaint often goes nowhere.
Capture every message as soon as it arrives. It is kept for life, even if its author deletes it.
Posts vanish as soon as you react. Without a record, there is nothing left to show.
BlockProve web capture freezes the page, its address and its date in seconds.
On 20 March 2025, the Marseille Judicial Court heard a clothing copy case: the fashion house AZ Factory accused a wholesaler of selling copies of its “Love from Alber” designs.
“It is therefore established that AZ Factory is indeed vested with the copyright” (translated)
In this case, only the fingerprint of the designs was on the blockchain, and a bailiff’s report was needed to link it to the files. With BlockProve, the file itself is kept, its date is certified by an eIDAS qualified timestamp, and anyone can verify the proof in seconds.
14 years of experience in IT and telecommunications, in different roles that taught me to understand customers’ needs and stakes. I created BlockProve so that everyone can defend themselves with solid proof, without depending on anyone.
Available on iPhone, Android, Mac and Windows. Your device is detected automatically.
