Frequently asked questions,
precise answers.

An app that turns a photo, a video, an audio recording or a document into a dated, verifiable proof. It saves what the phone knows about the capture, computes a unique fingerprint of the file and records it on a public blockchain. You get a certificate and a technical proof file that anyone can verify.

A file together with its proof record: the phone's date and time, the location, the device model and the results of its checks. The fingerprint of this record is recorded on the Polygon blockchain. The proof establishes that the file has not been modified since then, and that it existed no later than the time of the block that carries this fingerprint.

The SHA-256 fingerprint of the file; the date and time provided by the phone, and its time zone; the location (latitude, longitude, altitude, accuracy, heading); the phone's orientation and battery status, its brand, model and operating system; the network type; the app version; the results of the integrity checks; and a random value, which makes the fingerprint impossible to guess. The name given to the phone is never included.

No. A commissaire de justice is a public officer, and the law requires their involvement for certain official reports (constats). Scealia covers, at low cost and without a site visit, the everyday proofs for which such a report would be disproportionate. A Constat Scealia is neither a constat drawn up by a commissaire de justice nor an authentic instrument.

An ordinary photo can be retouched, cropped or generated, and its metadata can be changed without leaving a trace. A Scealia proof carries a fingerprint recorded on a public blockchain, at a time no one can change: the slightest modification of the file shows up on verification.

The beta is the app's free trial period, before its commercial launch: its purpose is to put the app to the test with its first users. Its end will be announced to testers in advance.

The iPhone version will come after the Android beta. Sign up for early access to be notified.

During the beta, everything is free. Timestamping remains free and unlimited. The law firm workspace remains free. Constat Scealia will become a paid service at the commercial launch, at a price announced beforehand.

Yes. Their fingerprints stay recorded on the blockchain, and their certificates and technical proof files remain verifiable, even without Scealia. The very first beta proofs, recorded on a test network before October 2, 2026, say so on their certificate.

Photos, videos and audio recordings made in the app, up to one minute per take; or an existing file imported from the phone: a document, a screenshot, a photo.

The place is part of the proof: the location measured by the phone goes into the proof record, and the certificate shows it on a map. That is why the app asks for location access during the capture.

Yes, by importing it into the app. Its proof is dated from the import: it attests neither to the file's existence nor to its state before that date, and its original metadata, such as its date and place, is not verified.

Not for capturing: the proof, its fingerprint and its proof record are created on the phone. Recording on the blockchain waits for a connection; the app does it on its own as soon as it is back online, and the date used is the date of that recording.

Only a fingerprint: that of the proof record, or that of a list of proof records anchored together. Not the file, not the location, not your identity; thanks to the random value in the proof record, the fingerprint reveals nothing. It is recorded publicly and permanently on the Polygon blockchain.

A multi-page PDF. The first page gives the attestation, the date, the fingerprints, the transaction, the steps and the place of capture; the following pages give the photo, the full proof record, the map and the ways to verify it, with or without Scealia. Its QR code opens the verification of the proof. The certificate explained line by line.

A container in the European ASiC-E format that brings together the original file, its proof record and the details of its recording on the blockchain, sealed by Scealia. It can be verified with standard tools, without Scealia. It contains the unencrypted original: keep it and share it with care.

The technical proof file carries Scealia's electronic seal, which attests that it was produced by the app. The qualified seal, issued by a qualified trust service provider within the meaning of the eIDAS Regulation, is the one that comes with Constat Scealia.

One or more proofs whose list of fingerprints receives a qualified electronic seal and a qualified electronic timestamp, issued by a qualified trust service provider listed on the French trusted list.

Not yet. Until the first qualified seal is issued, the Constat offered in the app is a demonstration, without a qualified seal or a qualified timestamp, and it says so.

The eIDAS Regulation presumes the integrity of data bearing a qualified seal (Article 35) and the accuracy of the date of a qualified timestamp (Article 41), throughout the European Union: it is up to whoever disputes them to prove otherwise.

The judge freely assesses the weight of evidence. A Scealia proof establishes the integrity of the file and that it existed no later than a given date; it establishes neither the reality of the scene nor the identity of its author. The Constat adds the presumptions of the eIDAS Regulation. Scealia does not guarantee any outcome in court.

No, not to capture, record a proof on the blockchain, or get its certificate and technical proof file. Yes, for the online vault, the link that gives access to the content, sending a proof to a lawyer, the law firm workspace and Constat Scealia.

An optional online copy of your proofs, up to 2 GB per account. The file, its proof record and its title are encrypted on your phone before being stored there, with a passphrase only you know: if you lose it, Scealia can neither recover it nor decrypt your files.

No. Your proofs stay on your phone; those you put online are encrypted on the phone before they leave it, and Scealia can read neither their content, nor their proof record, nor their title. Only a fingerprint is sent out, to be recorded on the blockchain.

On your phone first; the online copies are hosted by Scaleway, in Paris. During the beta only, each time it is launched, the app contacts two providers whose servers are in the United States: Expo, for updates, and Talsec, for the phone integrity check. The privacy policy (in French) gives all the details.

Proofs kept only on the phone are lost with it. Those in the online vault can be recovered on a new phone, with your account and your passphrase. Certificates and technical proof files already handed over remain verifiable.

In the app, or online at scealia.com/app, in the “Mon compte” (My account) section. Deletion is immediate and permanent; the fingerprints already recorded on the blockchain remain there.

From its proof record: the certificate, the technical proof file, or a link. The link, like the certificate's QR code, gives access either to the proof put online, or only to the verification of its date and fingerprint. You choose how long it lasts, from one day to ten years, and you can revoke it at any time.

Anyone, free of charge: on scealia.com/en/verify, by dropping in the certificate, the technical proof file or the original file, or in the app. The files do not leave your computer: only the transaction ID is looked up.

Yes. A file's fingerprint can be computed with any SHA-256 tool, and the transaction can be read on a public Polygon blockchain explorer. The certificate gives the steps to follow.

The file you checked is not the one in the proof, or it has been modified, even by a single byte. A copy recompressed by a messaging app is enough to change the fingerprint: always verify the original file, or the technical proof file that contains it.

In the workspace reserved for lawyers, at scealia.com/app: you receive your clients' proofs, sort them into numbered case files, produce the exhibit list in Word format and the note on the evidence, and export the case file. What the law firm workspace does.

From a case file, you send a request for exhibits to your client's email address. Your client finds it in their online account and attaches the proofs taken with the app.

Through a link you send them: they check each exhibit, its fingerprint and its recording on the blockchain, for themselves.

Yes. The fingerprints recorded on the blockchain stay there, the technical proof file follows a European standard, and each certificate makes it possible to find and verify its proof, even without Scealia.

If the service is discontinued, Scealia will give its users reasonable notice; until it stops, everyone can download their proofs at any time.