Law firms, notaries, courts, signing and trust services
Legal services and digital trust
A signature settles a dispute only if nobody can deny it later.
Contracts, filings, evidence and notarial acts are moving from paper to software. The law accepts a digital signature as equal to a handwritten one when strict conditions are met. Those conditions describe hardware and software: a certified device, a key under the sole control of the signer, a record that cannot be changed. Each of them is a claim about a system that is updated every month.
Who this is for
- Trust service providers, issuing qualified signatures, seals and timestamps
- Law firms and legal departments, that sign, file and keep evidence digitally
- Courts, notaries and registries, moving acts and files online
- Legal technology vendors, building signing, evidence and contract tools
Where the problem shows
A signing service is updatedThe key sits in a data centre and the signer uses it remotely. After an update, the service should prove it still gives the signer sole control.
A signature is challenged in court years laterThe question becomes what the system was on the day of signing. The answer should be kept as evidence from that day.
A hardware security module gets new firmwareThe certification covered the old version. Keys made under it are fine; the proof for new signatures needs renewing.
Digital evidence is collected or handed overThe chain of custody should show which tool captured the file and that nothing changed it.
An AI tool drafts or reviews a documentA client or a court may ask which model, with which instructions, produced the text.
What we deliver
- An attestation design for remote signing: key attestation from the HSM, attestation of the signing service, and a record kept for each signature.
- Rules for updates and recertification, so signatures made after a change rest on current proof.
- Evidence handling with provenance: what captured a file, when, and with which software.
- A mapping to eIDAS and the Swiss signature law, written for auditors and conformity assessment bodies.
Questions worth answering
- After your last signing service update, what shows the signer still has sole control of the key?
- Could you show a court what your system was on the day a document was signed?
- Which AI tool touched this contract, and can you prove it?
Across the life cycle
DesignBuildMake or deployOperateUpdateRetire
The stage that decides here: retire. Signatures are disputed years later. Evidence from operation has to outlive the system that produced it. See attestation in the product life cycle.
Rules your buyers cite
eIDAS 2.0 and the EU Digital Identity WalletGDPRSwiss Federal Act on Data ProtectionDORA
Our work in this industry
Attested wallets and digital identityAI passportContinuous compliance
Go deeper
Working on legal services and digital trust? A first call takes 30 minutes and commits you to nothing. Bring your product and the one question that worries you.
Next fixed date: EU Digital Identity Wallets are due in every member state on 24 December 2026, 42 days from now.