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China Mainland · CA Digital Signature · Electronic Signature Law

Electronic Signatures in China Carry the Same Legal Effect as a Handwritten Signature

A reliable electronic signature in China is a CA-based digital signature. Under Article 14, it carries the same legal effect as a handwritten signature when the four conditions in Article 13 are met.

The basics

An electronic contract is a written agreement formed through data messages — recognized by Chinese law

China's Civil Code and Electronic Signature Law give electronic contracts and signatures the same standing as paper, as long as the content can be displayed and retrieved and the signature meets the reliability conditions.

1

Electronic contract — Civil Code Article 469

A contract may be concluded in written form, including data messages such as electronic data interchange and email, provided the content can be tangibly presented and accessed for reference at any time.

2

Electronic signature — Electronic Signature Law

An electronic signature is data in electronic form attached to or logically associated with a data message, used to identify the signer and to indicate the signer's approval of its content.

3

CA-based digital signature

In China, a reliable electronic signature is implemented as a CA-based digital signature: a certificate issued by an MIIT-licensed Electronic Certification Service provider, with asymmetric cryptography binding identity and protecting integrity.

How it works

How an electronic contract is signed in China — four steps

From real-name identity verification to a retrievable evidence package, a compliant signing flow follows four steps.

  1. 1

    1. Real-name identity verification

    Verify each signer's identity — individuals by ID and mobile, enterprises by business license. Under the 2026 rules, verification must be done directly by the CA.

  2. 2

    2. Draft from a managed template

    Build the contract from a reusable template with predefined signature, seal, and date fields, keeping terms consistent and reducing errors.

  3. 3

    3. Sign with a CA certificate and timestamp

    Apply the CA-based digital signature with the signer's certificate, a document hash, and a trusted timestamp.

  4. 4

    4. Preserve the evidence package

    Retain the signed document with identity records, signing events, integrity records, and the certificate chain — retrievable for audit or dispute.

Legal definition

A reliable electronic signature must meet four conditions — all at once

Article 13 of the Electronic Signature Law lists four cumulative conditions. A signature that meets all four carries the same legal effect as a handwritten signature or seal.

1

Signature creation data is exclusive to the signer

When used, the signature creation data belongs solely to the signer and stays under the signer's exclusive control. Under the 2026 rules, if a platform or CA custodies the private key, it must obtain separate written authorization specifying scope, scenarios, duration, and access logs.

2

Any change to the signature is detectable

After signing, any alteration to the electronic signature can be detected; the evidence workflow retains full integrity records.

3

Any change to the data message is detectable

The signed data message and its integrity evidence are preserved in full; any change to content or form can be detected.

4

Certain documents are excluded or need legal review

Article 3 excludes documents on personal relationships (marriage, adoption, inheritance), real-estate rights disposition, and certain public-utility documents. Identify and isolate these at classification.

Regulatory update · 2026

2026 e-certification rules: what changed for electronic signing in China

The updated Measures for the Administration of Electronic Certification Services and T/CQAE 11034-2025 tighten requirements across four areas.

  1. 2025T/CQAE 11034-2025 and updated Certification Service Measures published.
  2. Jul 1, 2026Strict enforcement begins for CA verification, signing, and evidence compliance.
  3. OngoingEnterprises should review provider compliance and migrate non-compliant workflows.

CA direct verification (CA 直验)

Identity verification must be performed directly by the licensed CA — not delegated to external agencies.

CA direct signing (CA 直签)

The certification agreement must be signed directly between the CA and the subscriber. Default checkboxes and platform-only agreements no longer meet the standard.

Signing-intent evidence (意愿留证)

Certificate issuance and signing actions must leave a complete evidence trail. Higher-assurance certificates may require audio or video records.

Private-key management (私钥直管)

Private keys belong to the user. If custodied by a platform or CA, separate written authorization is required.

eSign.AI product capabilities

eSign.AI runs real-name signing, templates, bulk send, AI review, and evidence — on one platform

eSign.AI gives legal, HR, and operations teams the tools to run compliant electronic signing at scale in China.

Electronic seal principle - CA-based digital signature flow in China

Real-name identity verification and provider integrations

Verify individuals and enterprises, and connect identity providers and business systems through built-in integrations.

eSign.AI template editor with drag-and-drop signature and seal fields

Drag-and-drop template management

Build reusable templates with signature, seal, date, and text fields; map them to CSV or API variables; share controlled template libraries across teams.

eSign.AI Bulk Documents dashboard showing batch signing status

Bulk send for high-volume signing

Send to 1,000+ recipients from a CSV with unique signing links and live signing-status tracking — built for HR onboarding and supplier agreements.

eSign.AI AI Hub for contract risk assessment and summarization

AI contract review

The AI Hub flags high-risk clauses, summarizes long contracts, and supports pre-signing compliance checks.

Evidence and admissibility

A signed contract is only as strong as the evidence behind it

Chinese courts assess electronic evidence by how records were generated, stored, and transmitted. A complete, tamper-evident evidence package supports admissibility.

1

Tamper-evident evidence package

Each signed document is sealed with a document hash and a trusted timestamp, with identity records, signing-intent evidence, and signing events retained as a verifiable package. Under the 2026 rules, the evidence chain must demonstrate CA-direct verification, subscriber-level agreement, and complete intent records.

2

Judicial-grade preservation

Evidence can be preserved with timestamp authorities and blockchain-based notarization, and an evidence report can be produced for court or arbitration.

3

Retrievable on demand

The completed document, signer identity, verification method, integrity records, and certificate context remain retrievable for audit and dispute review.

Legal timeline

China's electronic signature framework has matured since 2004

A mature framework does not mean every document uses the same signing path — execution decisions remain document-specific.

  1. Electronic Signature Law enacted

    Established data messages, reliable electronic signatures, and electronic certification services, with Article 14 granting equal legal effect.

  2. First amendment

    Revised provisions in line with the developing electronic commerce environment.

  3. Current amended version

    The 2019 amendment is the current official text of the Electronic Signature Law.

  4. Civil Code took effect

    Article 469 reinforced data messages as a valid written form, strengthening the standing of electronic contracts.

  5. eSign.AI parent obtains MIIT CA license

    Hangzhou Tiangu Information Technology Co., Ltd. (eSign.AI's parent organization) obtained the MIIT Electronic Certification Service License, establishing a self-owned CA capability for the domestic market.

  6. E-certification industry standard published

    The industry standard T/CQAE 11034-2025 and updated Measures for the Administration of Electronic Certification Services were released, signaling a shift toward stricter CA compliance.

  7. E-certification new rules enforced

    Stricter enforcement begins for CA direct verification, direct signing, intent-evidence retention, and private-key management. Enterprises should review provider compliance and existing contract workflows.

Deployment scenarios

Where Chinese teams put electronic signing to work

From HR onboarding to cross-border agreements, document-specific routing and evidence retention power high-frequency signing across industries.

HR and workforce

Employment contracts, policy acknowledgements and onboarding documents run on reusable templates with controlled access and complete signing records.

Sales and procurement

Sales contracts, NDAs, supplier onboarding and renewals with signer-authority checks and completion callbacks to the system of record.

Financial services

Loan agreements, account opening, investment confirmations and compliance disclosures signed with full audit trails and evidence packages.

Manufacturing and supply chain

Purchase orders, quality acceptance certificates, logistics receipts and supplier contracts standardised across plants and partners.

IT and system integration

ERP, CRM, HR, OA and procurement systems trigger signing via API; evidence packages return to the originating system on completion.

Group and cross-border signing

Mainland entities coordinating with Hong Kong, Singapore and overseas affiliates route by document type and signer location.

Planning electronic signing for your China operations?

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FAQ

Common questions about electronic signatures and contracts in China

China workflow review

Confirm the signing route before scaling your China rollout

Bring your document types, signer roles, existing systems, and evidence requirements into a China signing workflow review. eSign.AI's team can walk through the configuration.