eIDAS AdES Ā· ESIGN Ā· Cross-Border

Signatures you can defend in any court. Across any border.

A signed PDF is not a contract. A click-wrap audit log is not evidence of identity. In 2026, cross-border transactions demand cryptographic proof of the signer — not just a typed name and an IP address.

A €4.2M services agreement is signed electronically between a Dutch procurement team and a Brazilian supplier. Six months later, the deliverable disputes start. The supplier denies the signature. The Dutch firm pulls up the e-signature audit trail: name, email, IP, timestamp. The Brazilian supplier's lawyer asks a reasonable question: "Can you prove the person behind that email was our CEO?"

The Dutch firm cannot. The audit log attests that someone authenticated to an email account and typed a name — it does not cryptographically bind the signature to a verified human. eIDAS Advanced Electronic Signatures, anchored to a passport-verified identity, do.
27
EU member states recognise eIDAS AdES
50+
US states under ESIGN + UETA
AdES
Level today Ā· QES roadmap Q4 2027
Worldwide
Global coverage Ā· 179 NFC countries

E-signature volumes went up. Identity assurance didn't follow.

Global e-signature adoption accelerated from 2020 and never returned to baseline. Every contract, approval, NDA, and procurement is now routinely signed digitally — across all industries, all geographies, all counterparty types.

The plumbing — the large generation of click-wrap e-sign platforms — scaled with the volume. But the identity layer underneath did not. Most e-signatures still anchor on "someone accessed this email and typed a name", a standard that predates deepfakes, synthetic identities, and coordinated business-email-compromise operations.

eIDAS AdES is the EU legal standard that closes this gap — requiring cryptographic uniqueness, signer control, and tamper detection. IdentiGate's AdES signatures are generated by a passport-verified identity, not a typed name on a PDF.

$2.9B
Global losses to Business Email Compromise in 2023 — the identity layer at the heart of it
FBI IC3 Annual Report 2024
2×–25Ɨ
Price range per signature between legacy e-sign and QES — AdES sits between, with far higher assurance than SES
Industry pricing comparisons 2025
Art 25.1
eIDAS clause: electronic signatures cannot be denied legal effect solely because they are electronic
Regulation (EU) 910/2014

Where unverified signatures become disputes.

High-value cross-border transactions fail at two points — the identity of the counterparty, and the evidentiary weight of the signature. These are the industries where both failures compound.

01

Legal & Notarial

Cross-border power of attorney, shareholder resolutions, notarial acts. The audit trail isn't for you — it's for the counterparty's lawyer, the regulator, or the court. AdES is the baseline; anything less loses at trial.

02

Enterprise Procurement

Multi-million agreements with suppliers you've never met, signed by people whose authority you can't verify. Every disputed deliverable becomes a "who signed this?" investigation. Passport-anchored AdES ends the ambiguity at contract time.

03

Financial Services

Loan agreements, margin calls, investment mandates, derivative confirmations. Every one is a regulated document. DORA requires phishing-resistant MFA for authentication — eIDAS AdES-equivalent evidence is the next logical step for the signature itself.

E-sign proves a click happened. It doesn't yet prove who clicked.

Legacy e-signature platforms were designed for convenience, not assurance. They accelerated signing — at the cost of making signer identity provable only through the ceremony of the platform itself, not through cryptographic evidence. AdES and passport-anchored identity change the default.

What Most E-Sign Platforms Do Today
  • Email-based identity assertion
  • Optional SMS or OTP second factor
  • Typed name, drawn signature, or uploaded image
  • Audit log — name, email, IP, timestamp
  • Document hash stored with the signature
  • Platform-native certificate of completion
What IdentiGate Adds
  • Passport-verified signer identity (NFC chip)
  • eIDAS AdES signature (Article 26)
  • Signer's private key in Secure Enclave
  • Tamper-evident evidence chain, not just a log
  • Recognised in 27 EU + all ESIGN-compliant US states
  • Multi-party workflows with individual AdES for each party

How does IdentiGate compare?

Most businesses use one of three signing approaches today. Each solves part of the problem. IdentiGate is the first to close both the identity and the signature assurance gap, at a price between SES and QES, using the passport that already exists in the signer's pocket.

Capability Typed-Name SES Legacy E-Sign Platform IdentiGate AdES
Identity verified to the chipNoNoYes
Signer-controlled private keyNoNoYes — Secure Enclave
Tamper-evident evidence chainNoPartial — audit logYes — AdES + timestamp
eIDAS AdES levelNoAvailable as premium tierDefault
US ESIGN + UETA recognitionLimitedYesYes
Biometric binding to signerNoNoYes
Pricing modelPer-envelope + per-seatPlatform flat rateTransaction-based Ā· see AdES product page

AdES sits between SES (no identity assurance) and QES (requires a Qualified Trust Service Provider). For the vast majority of B2B transactions, AdES is sufficient, legally strong, and far cheaper than QES. QES is on our roadmap via QTSP certification in Q4 2027 — for now, AdES covers everything your cross-border business runs on.

Every signature carries cryptographic evidence, not just a click.

An IdentiGate AdES signature is not a rendered image of a name. It is a tamper-evident cryptographic bundle — the document, bound to five independent proofs, sealed together so any later change is immediately detectable.

DOCUMENT The contract, invoice, PDF, or data payload 00 TIMESTAMP RFC 3161 trusted timestamp Ā· legally binding "when" 01 LOCATION GPS-verified location at moment of signing 02 IDENTITY Passport-verified name + document number 03 CERTIFICATE VALIDITY Real-time OCSP check Ā· signer's cert was valid at t=sign 04 ADES CRYPTOGRAPHIC SEAL X.509 signed bundle Ā· tamper-evident Ā· court-ready 05
A click is not evidence.
Simple Electronic Signatures capture consent. They do not prove who, where, when — or whether the signer's credentials were valid at that moment. In dispute, they unravel.
Evidence is layered.
Every IdentiGate AdES signature carries five independent proofs, cryptographically bound. Strip any layer and the seal breaks. Alter the document and the seal breaks.
Verifiable by anyone.
The bundle is a standard X.509 artefact. Any standards-compliant validator — including the European Commission's DSS tool — can reconstruct and verify the chain. No vendor lock-in on the evidence itself.

This is why AdES holds up in court when SES does not — and why cross-border commerce increasingly requires it.

What stands between you and cross-border signing trust.

Q
Who actually pressed the signature button?

Your counterparty's e-signature audit log tells you an email account authenticated to their platform. It does not tell you which human pressed the button — or whether that human was their CFO, their assistant, or someone who gained access to the email. When a deal disputes, this ambiguity is the crack the lawyer walks through.

Passport-anchored AdES cryptographically binds the signature to a biometrically verified person. The dispute becomes a forensic exercise, not an argument.

Q
Will this signature hold up across borders?

An SES signature valid in the Netherlands might not carry the same weight in Turkey. A QES signature issued by a Dutch QTSP might not be recognised automatically in Brazil. eIDAS provides harmonised EU recognition; ESIGN covers the US; beyond that, you are in bilateral-treaty territory.

IdentiGate's AdES signatures work where eIDAS is recognised. Coupled with the passport-verified identity of the signer, they provide the strongest globally-portable signature evidence available outside a QES certificate.

Q
How do we handle multi-party signing without creating a weakest link?

A typical B2B transaction has three or more signers — the contracting parties, a witness, a guarantor, a notary. Legacy platforms handle this by collecting signatures sequentially, each with their own identity assurance level. Each signature is only as strong as its weakest link in the chain.

IdentiGate issues individual AdES signatures for each party, all chained into one evidence record. Every signature is equally strong. The evidence chain is verifiable by any party, in any jurisdiction that recognises eIDAS or ESIGN.

Q
Why not just use QES for everything?

Qualified Electronic Signatures (QES) are the gold standard in EU law — equivalent to a handwritten signature. But they cost €2–5 each and require a QTSP certificate per signer. For the 92% of B2B documents that don't legally require QES, this is overkill.

AdES is legally sufficient for the vast majority of commercial contracts. IdentiGate makes rigorous signing economically viable at the scale cross-border commerce actually runs at — see the AdES product page for current pricing.

Not just one product. The complete identity layer for B2B signing.

Each capability below solves a specific moment in the signing lifecycle — from the first verified signer, through multi-party contracts, to the evidence chain that stands up in court three years later. Deployable today, built on our existing products.

SOLVE TODAY
01
āœļø

Advanced Electronic Signatures (AdES)

An eIDAS Article 26 signature — cryptographically unique, biometrically bound to the signer's verified passport. Recognised across all 27 EU member states, enforceable under ESIGN/UETA in the US.

02
šŸ¤

Multi-Party Signing

An acquisition agreement needs five signatures. With multi-party AdES, every signer brings their own verified identity and cryptographic chain entry — five signatures, five independent proofs, no weak links.

03
šŸ¢

Company Signature & e-Seal

Supply-chain attestations, board approvals, regulatory filings need an organisational signature. A cryptographic e-Seal makes "signed by the company" a verifiable fact, not a placeholder.

04
ā±ļø

Qualified Timestamps

Two parties dispute when a document was signed. A qualified timestamp — issued by a trusted time source at the moment of the signature — ends the dispute with cryptographically signed proof.

05
šŸ“‹

Digital Evidence Layer

Three years later, the case goes to court. Who opened the document, when, which version was viewed, who annotated page 7? A cryptographic evidence chain answers every question with tamper-evident proof.

06
šŸš€

Batch & High-Volume Signing

500 customer confirmations before month close. 2,000 invoice signatures by 17:00 for quarterly close. Batch operations with per-document AdES — each signature still cryptographic, each identity still verified.

TOMORROW'S EDGE

The industry isn't here yet. Our architecture already is.

07
šŸ”

Qualified Electronic Signatures (QES)

Certain regulated filings, cross-border enforceability scenarios, national-law requirements need QES — the legal equivalent of a handwritten signature under eIDAS.

✦ Roadmap Q4 2027 — QTSP certification
08
šŸ¤–

AI Agent Signing Authority

An AI agent signs a procurement order on behalf of a human authorised signatory. The signature must carry a cryptographic delegation chain back to the verified human.

✦ Waiting for industry adoption
09
šŸ”’

Zero-Knowledge Signature Attributes

Proof the signer has signing authority for this class of contract — but not their title, role, or department. Selective disclosure on top of AdES.

✦ Waiting for industry adoption

Two paths from pilot to production.

šŸ”Œ
Path 01

Signing API

For legal, contract, procurement, finance, and platform teams that want AdES inside their existing CLM, CRM, or workflow. You keep your contract lifecycle management, approval routing, and procurement workflow — we add the eIDAS-compliant signature primitive underneath. Includes dedicated CLM vendor integrations for DocuSign, ContractPodAI, Ironclad, and custom platforms.

Your engineering team integrates via REST API; your IAM layer consumes the X.509 certificate via SAML, OIDC, or SCIM. Scales from single-document signing to cross-border enterprise volume where multi-jurisdiction enforceability and audit evidence are hard requirements.

  • REST API with SAML/OIDC/SCIM consumption
  • CLM vendor integrations (DocuSign, Ironclad, ContractPodAI, custom)
  • Legal, audit, and compliance reporting built-in
  • Transaction-based pricing that scales with signing volume
Signature
See product page
AdES Signing
+ integration fee scoped per engagement
āœļø
Path 02

Signing Portal

For legal teams, SMEs, freelancers, and cross-border contracts that need AdES signing without engineering work. Upload your document, invite signers (worldwide — 179 NFC countries plus document route), each signer verifies via passport and signs with eIDAS AdES — court-ready anywhere. The signed document comes back to you with full audit trail.

Especially powerful for USA ↔ EU ↔ Asia ↔ Africa contracts where most e-signature platforms produce only Simple Electronic Signatures (SES) — basically "click to agree" with weak dispute-resolution weight. IdentiGate replaces click-wrap with proof that a passport-verified person signed at a specific time, from a specific device.

  • Every signer is a passport-verified person — not just an email address
  • eIDAS AdES signatures from day one Ā· court-ready worldwide
  • Available as standalone product Ā· API integration available on Enterprise plan
Free / teams
See product page
Signing Portal
Standalone — no integration needed

Defend a signature live.

20 minutes. A real contract. A real signer with a real passport. See the AdES signature generated in the Secure Enclave, chained into tamper-evident evidence, and verifiable on any standards-compliant validator — including the European Commission's own DSS tool.

Security researchers: disclose vulnerabilities responsibly at security@identigate.com