Use case
NDA and contracts
A signed agreement proves a commitment. A certified agreement also proves which text was signed, and on what date.
The situation
One scenario, two outcomes
The same moment, depending on whether the work was timestamped or not.
The trigger
The contractor signs the development contract and its forty-page specification, sent by PDF the evening before.
Without proof
At delivery, the missing features aren't in the version they produce. The two texts look alike, both are signed, neither is dated by a third party. You end up arguing about the version, not the execution.
With a certificate
The signed PDF and its appendices were certified on the day of signature. Any later change produces a different fingerprint. The contractual text is no longer up for debate; the disagreement becomes a disagreement about execution again.
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Texte rédigé automatiquement à titre d'illustration, à partir de la phrase que vous avez saisie. Il décrit une position probatoire, pas une issue : il ne constitue pas un conseil juridique et ne préjuge d'aucune décision.
The need
Integrity of the text, signature date, appendices.
Which text, exactly?
Contract disputes are often less about whether the agreement exists than about which version it is. Certifying the signed PDF locks the text down to the bit: any later change produces a different fingerprint, immediately detectable.
Dating the agreement independently of the parties
A date applied by a qualified timestamping authority does not depend on any of the signatories. It usefully complements an electronic signature, or replaces it when the agreement was signed by hand and then scanned.
The appendices, often forgotten
Specifications, requirements, mockups attached to the contract: these are what define its subject matter, and what's often missing from the file. Certifying them along with the agreement keeps the whole set consistent.
→Integrity of the signed text, verifiable by a third party
→Qualified timestamping independent of the parties
→Appendices and attachments certified with the agreement
→Free-form evidence in civil matters — French Civil Code, Article 1358
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