WESIGN DOC eSignature Compliance in Japan

Legal Framework

The ESCB Act defines an electronic signature as data that is:

• Created by a person using a method that can identify them, and

• Associated with the relevant electronic record in a way that ensures that record has not been altered after signing.

The Act also regulates certification authorities (CAs), ensuring that entities issuing digital certificates meet strict standards of security and reliability.

Electronic signatures that are verified using trusted certificates are presumed to have been created by the signer, granting them a strong legal standing under Japanese law.

WESIGN DOC’s Compliance Assurance

WESIGN DOC’s signature process and certificate framework comply with the key requirements set forth under the ESCB Act.

Our qualified digital certificate infrastructure ensures that the signer’s identity, intent, and document integrity are verifiable and traceable at all stages.

Each signed document generated through WESIGN DOC:

• Is bound to a unique digital certificate ensuring the authenticity of the signer.

• Is encrypted to maintain the integrity of the signed data.

• Provides a secure audit trail showing the transaction’s history and signer consent.

• Appears as valid and trusted when opened in certified PDF readers such as Adobe Acrobat, as validation is supported through recognized trust lists.

Key Compliance Highlights

• Fully compliant with Japan’s Act on Electronic Signatures and Certification Business (ESCB Act).

• Supports certified digital identity verification and non-repudiation.

• Ensures document integrity through encryption and tamper-evident protection.

• Maintains audit logs for compliance and transparency.

• Uses certificates aligned with international trust standards (EU Regulation 910/2014 Annex III).

• Provides recognized trust status in PDF validation systems used in Japan.