Announced details
Paperless business-to-business transactions, electronic documents, form data, and compliance with the Electronic Book Preservation Act
Services provided 24 hours a day, 365 days a year, excluding scheduled maintenance announced in advance and emergency maintenance
WingArc1st Inc. entered the digital trust services market and began providing Trustee in 2025. Number of uses of Trustee e-Seal: Not disclosed.
WingArc1st Inc. and Cybertrust Japan Co.,Ltd. jointly developed the service. In March 2026, the companies agreed to collaborate on building a digital trust infrastructure for the AI era.
Head office: Minato-ku, Tokyo; Representative Director, President, Executive Officer and CEO: Tanaka Jun (田中潤). Provides form and document management solutions and data empowerment solutions.
WebTrust for CA
JIPDEC Trusted Service Registration (certification authority)
Adobe Approved Trust List（AATL）
FIPS 140-3 Level 3 or higher
ISO/IEC 15408 EAL4+ or higher
ISO 30414
Health and Productivity Management Stock Selection 2026
JIPDEC
Adobe
Ministry of Internal Affairs and Communications
Trustee Timestamp is provided at no charge to users subscribing to Trustee e-Seal. Other pricing: Not disclosed.
The company does not address Contract Value / Impact on Business Performance.
Materials concerning certified time authentication services under Ministry of Internal Affairs and Communications Notice No. 146 of fiscal 2021
JIPDEC
Adobe Approved Trust List（AATL）
| Item | Details |
|---|---|
| Names of Products / Services Covered | Trustee e-Seal, Trustee Timestamp, Trustee, Certificate for iTrust e-Seal |
| Counterparty | WingArc1st Inc. |
| Counterparty overview | Head office: Minato-ku, Tokyo; Representative Director, President, Executive Officer and CEO: Tanaka Jun (田中潤). Provides form and document management solutions and data empowerment solutions. |
| Relationship with the Company | WingArc1st Inc. and Cybertrust Japan Co.,Ltd. jointly developed the service. In March 2026, the companies agreed to collaborate on building a digital trust infrastructure for the AI era. |
| Offering price | Trustee Timestamp is provided at no charge to users subscribing to Trustee e-Seal. Other pricing: Not disclosed. |
| Launch date | 30 June 2026 (actual) |
| Applicable area | Paperless business-to-business transactions, electronic documents, form data, and compliance with the Electronic Book Preservation Act |
| Award/certification name | WebTrust for CA, JIPDEC Trusted Service Registration (certification authority), Adobe Approved Trust List（AATL）, FIPS 140-3 Level 3 or higher, ISO/IEC 15408 EAL4+ or higher, ISO 30414, Health and Productivity Management Stock Selection 2026 |
| Awarding / certifying body | JIPDEC, Adobe, Ministry of Internal Affairs and Communications |
| Quantitative Effects | Services provided 24 hours a day, 365 days a year, excluding scheduled maintenance announced in advance and emergency maintenance |
| Usage history | WingArc1st Inc. entered the digital trust services market and began providing Trustee in 2025. Number of uses of Trustee e-Seal: Not disclosed. |
| Source | Materials concerning certified time authentication services under Ministry of Internal Affairs and Communications Notice No. 146 of fiscal 2021, JIPDEC, Adobe Approved Trust List（AATL） |
Items this document does not state (6)
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.The spread of generative AI has increased the risk of tampering, such as embedding false information in electronic documents, raising the importance of ensuring document authenticity in business-to-business transactions.