Announced details
サイバートラスト provides iTrust C2PA Certificates for スリーフィールズ' TStocker service. 西武建設, スリーフィールズ and サイバートラスト are jointly conducting the demonstration project. No capital or personnel relationship is disclosed.
西武建設株式会社: 1-11-1 Kusunokidai, Tokorozawa, Saitama; President and CEO Makoto Sato; general construction company; founded in 1941; a member of the Mirait One Group since March 2022, スリーフィールズ株式会社: Wing Shinnakano 202, 4-38-18 Honcho, Nakano-ku, Tokyo; Representative Director Fuyuhiko Nakajima; develops and provides the TStocker video cloud service
Tokorozawa, Saitama (the site of the Kitano-Shimotomi Line, Section 4, road construction project)
In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.
Official C2PA (Coalition for Content Provenance and Authenticity) website
| Item | Details |
|---|---|
| Names of Products / Services Covered | Video Authenticity Assurance Solution, TStocker, iTrust C2PA Certificate |
| Counterparty | 西武建設株式会社, スリーフィールズ株式会社 |
| Counterparty overview | 西武建設株式会社: 1-11-1 Kusunokidai, Tokorozawa, Saitama; President and CEO Makoto Sato; general construction company; founded in 1941; a member of the Mirait One Group since March 2022, スリーフィールズ株式会社: Wing Shinnakano 202, 4-38-18 Honcho, Nakano-ku, Tokyo; Representative Director Fuyuhiko Nakajima; develops and provides the TStocker video cloud service |
| Relationship with the Company | サイバートラスト provides iTrust C2PA Certificates for スリーフィールズ' TStocker service. 西武建設, スリーフィールズ and サイバートラスト are jointly conducting the demonstration project. No capital or personnel relationship is disclosed. |
| Launch date | 26 August 2026 (demonstration project started; completed milestone) |
| Applicable area | Road construction, Construction industry, Transportation Infrastructure, Construction DX |
| Location | Tokorozawa, Saitama (the site of the Kitano-Shimotomi Line, Section 4, road construction project) |
| Source | Official C2PA (Coalition for Content Provenance and Authenticity) website |
Items this document does not state (10)
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.To address the risk of video tampering and impersonation using generative AI and deepfakes, and to ensure the authenticity of video records documenting construction work.