Why use DfinA Vault
every day?
Because in the digital age, small doubts quickly become big problems.
A file gets copied, renamed, transferred, edited, compressed, disputed. A move-in inspection photo, a quote, a letter of intent, a family archive, a proof of sending, a work document, a creation, a video, a screenshot: anything can become ambiguous if no one has taken care to clearly fix its version.
DfinA Vault turns this precaution into a simple habit.
In seconds, without revealing anything
In just a few seconds, you can certify a file without ever revealing its contents. DfinA Vault creates its digital fingerprint and gives you a certificate that lets you check, later, that any copy of the file is strictly identical to the certified original, even if its name has changed.
It is a simple way to protect your good faith before it is ever called into question.
What it is really for
A short-term rental
Record the condition of an apartment at check-in or check-out, by photo or video. Was that scratch already there? No more standoff over the deposit.
The real progress of the work
A project billed in stages? At each milestone, certify dated photos and videos of the actual progress. A calm way to compare what is billed with what is done, for you and for the tradesperson.
A quote, a contract
Prove which version was sent. No more “that is not the document I sent you”.
Against tampering
Deepfakes, edits, “retouched” versions… Keep the dated original on your side: a manipulated copy will never match the fingerprint of your authentic file.
A professional deliverable
“Here is exactly what I delivered, and when.” A certificate attached to your work is a signal of seriousness and reliability.
A creation, an archive
A manuscript, a work of art, a mockup, a family memory: clearly establish the existence and integrity of a document at a given moment, and keep a reference version of it.
An item entrusted to a craftsperson
A restorer receives an item to restore: a painting, a piece of furniture, an instrument, a jewel, an antique. One simple reflex protects both parties.
Film the initial condition
Right at hand-over, with the client present: overall condition, existing defects, wear marks, cracks, missing parts, fragile elements.
Certify the video
In a few seconds with DfinA Vault. The file never leaves the device.
Hand over the certificate
The client receives it immediately, by email or messaging.
Verifiable later
Any video that is modified, cut, compressed or replaced fails verification. The original becomes a dated reference.
Each party has a clear, dated and verifiable record of the condition documented at the time of hand-over. DfinA Vault establishes neither the authenticity of the item nor its full reality: only that a specific video existed at a given moment, strictly identical to the one certified.
DfinA Vault replaces neither a lawyer, nor a notary, nor a public authority. It does not judge the content of a file and does not say whether an image, a video or a document is true or false. It simply lets you answer three essential questions:
What?
The exact content of the certified file.
When?
The moment this version was certified or, with the Premium option, anchored in time.
Who?
The person who applied their personal digital seal, when this option is used.
What. When. Who.
These three elements can be used separately or combined very easily: file integrity, certification date, personal seal.
It is clarity
A certificate accuses no one: it provides an objective, dated reference point. Often there is no bad faith, just an awkwardness in figuring out who is responsible. The proof defuses things before the tone even rises.
The same simple gesture grows with the stakes: from a security deposit to a genuine question of responsibility, you always have a clear reference to present.
With unlimited Essential, no more hesitation
With the unlimited Essential plan, this protection becomes a natural reflex. You no longer have to wonder whether a file is “worth” certifying. As soon as a document might matter, you certify it. Like locking a door, like keeping a copy, like checking an attachment before sending it.
DfinA Vault does not promise to eliminate every dispute. It simply makes bad-faith challenges harder, and your good faith much easier to establish.
A simple habit. A clear proof.
Digital peace of mind.