We put proof on the side of ordinary people
Institutions have always had archives nobody questions. J-Vault gives the same kind of record to anyone with a phone, and keeps it private.
Why we exist
The worst time to look for a paper is the day you need it
A deposit is held back and your move-in photos have no date anyone trusts. A university asks for a certificate you saved somewhere years ago. A hospital abroad wants the report a closed clinic once gave you. In those moments people do not need more storage. They need calm: the paper is there, it is theirs, and it can be proved.
J-Vault was built to give that calm to anyone with a phone. Institutions have always kept archives nobody questions. Now you can keep one too.
Our promises
Four things we hold ourselves to
We cannot read your files
Your documents are locked on your own phone or computer before they reach us. We store the locked copy. The key stays with you, so not even we can open it.
You can leave whenever you like
Download everything at any time, original files included. Each file opens in any browser with your own password, without internet and without J-Vault.
A date nobody can quietly change
Every file gets a signed receipt and a Bitcoin timestamp. Years later you can show when you saved it and that not a single byte has changed.
We tell you the limits
We prove when you saved a file and that it is unchanged. We do not certify that a document is genuine; only the office that issued it can do that.
What we will not do
Trust is also about what we refuse
No ads, no trackers
There is no advertising business behind J-Vault and no tracking scripts on our pages. You pay for the service, so you are the customer, not the product.
No back door
If you lose your words and every trusted device, we cannot open your vault for anyone, ourselves included. That is the price of real privacy, and we say it plainly.
Built for ordinary people
Tenants, students, families and anyone who may one day need to show a paper. Not for institutions with legal teams, but for the person on the other side of the table.
If something happens to us
Your proof does not depend on J-Vault staying open
Your backups open without our website. Each receipt carries a signature that anyone can check with our published public key. Bitcoin timestamps live on a public network that no company controls. We built it this way on purpose: a vault you can only trust while its maker is around is not much of a vault.
Open standards
Nothing secret, nothing invented
J-Vault uses well-known, openly published methods: AES-256-GCM encryption and PBKDF2 key stretching in your browser, SHA-256 fingerprints, Ed25519 signatures, a personal hash chain, and OpenTimestamps anchoring on Bitcoin. Experts can check every step, and our Features page explains each one.
Keep the papers that matter
Save your first document in a minute. Try every part of J-Vault free for 14 days.
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