First Phase of In-House Trial of DID/VC App Completed
CAICA Technologies Inc., a subsidiary of CAICA, has completed the first phase of its in-house trial of a digital ID app utilizing Decentralized Identifiers (DID) and Verifiable Credentials (VC). The trial, involving 13 participants, confirmed the technical validity of the basic flow of DID issuance, VC issuance, granting, and verification.
📋 Article Processing Timeline
- 📰 Published: June 11, 2026 at 00:37
- 🔍 Collected: June 10, 2026 at 15:51
- 🤖 AI Analyzed: June 10, 2026 at 19:00 (3h 9m after Collected)
CAICA Technologies Inc. (Headquarters: Minato-ku, Tokyo; President and Representative Director: Shin Suzuki; hereinafter "CAICA Technologies"), a subsidiary of CAICA, announces the completion of the first phase of verification for its in-house trial of a digital ID application utilizing Decentralized Identifiers (DID) and Verifiable Credentials (VC), which was announced on March 3, 2026.
This in-house trial aimed to build an environment where each employee can own and manage their own DID, and securely issue, grant, and verify various types of certification information as VCs. The trial verified the entire flow from DID issuance, VC issuance and granting, to VC verification.
As a result, it was confirmed that DID issuance and management supporting multiple DID methods, VC template creation, issuance, and granting by administrators, VC display and verification by employees, and synchronization between the cloud database and local environment all functioned correctly. This confirmed the technical validity of the in-house digital ID infrastructure using DID/VC, and accumulated technical and operational knowledge for future external deployment.
1. Background of this In-House Trial
In recent years, with the advancement of Web3 and blockchain technology, interest in Self-Sovereign Identity (SSI), where individuals and organizations can autonomously manage their own information and securely present only necessary information, has been increasing.
Traditional ID management has primarily relied on centralized systems dependent on specific providers or systems. In contrast, utilizing DID/VC enables individuals and organizations to manage their own IDs and certification information, and present them in a verifiable form as needed.
CAICA Technologies has been promoting the development of practical solutions using DID/VC, leveraging its accumulated technical expertise in blockchain and digital finance. This in-house trial is the first step towards the real-world implementation of DID/VC, conducting operational verification within the company.
2. Overview of the In-House Trial
This in-house trial was conducted from March 3, 2026, to the end of April 2026, with 13 internal participants.
The trial verified the following items:
- Establishment of an environment where employees can own and manage their own DIDs
- DID issuance and management supporting multiple DID methods
- VC template creation, issuance, and granting by administrators
- VC list display and detail confirmation by employees
- Synchronization between cloud database and local environment
- Use of local data in offline environments
- Accumulation of technical and operational knowledge for external deployment
3. Main Verification Results
The main results of this in-house trial are as follows:
- Number of trial participants: 13
- Number of DIDs issued: 15
- Number of VCs granted: 26
- VC verification success rate: 100%
Additionally, the following items were confirmed to function correctly:
- Issuance and management with multiple DID methods (did:key, did:ethr, did:web)
- VC template creation, issuance, and granting flow by administrators
- Acquisition, display, and verification of VCs linked to their own DIDs by all participants
- Data synchronization between cloud database and local environment
- Use of local data in offline environments
4. Verification of DID Issuance
This in-house trial verified DID issuance and management corresponding to the following three methods:
did:key
This is a local generation method that generates cryptographic keys within the browser. It supports use in offline environments, and its effectiveness as a foundation for users to own and manage their own DIDs was confirmed.
did:ethr
This is a blockchain method utilizing the Ethereum testnet. As a DID management method with tamper resistance and transparency, it was confirmed that issuance, management, and resolution function correctly.
did:web
This is a method for managing DIDs linked to web domains. It has high affinity with existing corporate domains, and its effectiveness as a DID management method suitable for corporate use was confirmed.
Furthermore, issued DIDs were managed in association with email addresses, configured so that one user can hold multiple DIDs. DID information is permanently stored in the cloud environment and cached locally, confirming usability from multiple devices and in offline situations.
5. Verification of VC Issuance, Granting, and Verification
In this in-house trial, sample employee ID VCs were issued in JSON-LD format and granted to the DIDs of all 13 participants.
On the administrator side, the flow involved creating VC templates, setting certification names and images, selecting target users, and granting VCs to DIDs. On the employee side, the flow involved selecting their own DID from the DID display screen and verifying the issuer, issuance date, and detailed information on the VC display screen.
The VCs included information such as credentialSubject, issuer, issuanceDate, and expirationDate, and were issued and stored in a format where CAICA Technologies is recorded as the issuer. This confirmed the effectiveness of a mechanism where employees can verify certification information linked to themselves while ensuring the authenticity of the certification information.
6. Future Developments
Through this first phase of the in-house trial, CAICA Technologies confirmed that the basic flow from DID issuance, VC issuance and granting, to VC verification functions correctly.
Going forward, based on the technical and operational knowledge gained, the company will proceed with further verification of potential applications such as in-house awards, digital business cards, management of technical and work history, integration with performance evaluation systems, and internal communication tools.
Furthermore, in the future, the company aims to develop solutions for companies, financial institutions, and local governments, including digital ID management, qualification and certification information management, access rights management, and data authenticity verification, all utilizing DID/VC.
CAICA Technologies will continue to contribute to the realization of a safe, secure, and reliable digital society through the creation of innovative services by integrating blockchain and digital ID technologies.
Contact: Sales Department
Tel: 03-5657-3010
Email: info-sales@caica.jp
This in-house trial aimed to build an environment where each employee can own and manage their own DID, and securely issue, grant, and verify various types of certification information as VCs. The trial verified the entire flow from DID issuance, VC issuance and granting, to VC verification.
As a result, it was confirmed that DID issuance and management supporting multiple DID methods, VC template creation, issuance, and granting by administrators, VC display and verification by employees, and synchronization between the cloud database and local environment all functioned correctly. This confirmed the technical validity of the in-house digital ID infrastructure using DID/VC, and accumulated technical and operational knowledge for future external deployment.
1. Background of this In-House Trial
In recent years, with the advancement of Web3 and blockchain technology, interest in Self-Sovereign Identity (SSI), where individuals and organizations can autonomously manage their own information and securely present only necessary information, has been increasing.
Traditional ID management has primarily relied on centralized systems dependent on specific providers or systems. In contrast, utilizing DID/VC enables individuals and organizations to manage their own IDs and certification information, and present them in a verifiable form as needed.
CAICA Technologies has been promoting the development of practical solutions using DID/VC, leveraging its accumulated technical expertise in blockchain and digital finance. This in-house trial is the first step towards the real-world implementation of DID/VC, conducting operational verification within the company.
2. Overview of the In-House Trial
This in-house trial was conducted from March 3, 2026, to the end of April 2026, with 13 internal participants.
The trial verified the following items:
- Establishment of an environment where employees can own and manage their own DIDs
- DID issuance and management supporting multiple DID methods
- VC template creation, issuance, and granting by administrators
- VC list display and detail confirmation by employees
- Synchronization between cloud database and local environment
- Use of local data in offline environments
- Accumulation of technical and operational knowledge for external deployment
3. Main Verification Results
The main results of this in-house trial are as follows:
- Number of trial participants: 13
- Number of DIDs issued: 15
- Number of VCs granted: 26
- VC verification success rate: 100%
Additionally, the following items were confirmed to function correctly:
- Issuance and management with multiple DID methods (did:key, did:ethr, did:web)
- VC template creation, issuance, and granting flow by administrators
- Acquisition, display, and verification of VCs linked to their own DIDs by all participants
- Data synchronization between cloud database and local environment
- Use of local data in offline environments
4. Verification of DID Issuance
This in-house trial verified DID issuance and management corresponding to the following three methods:
did:key
This is a local generation method that generates cryptographic keys within the browser. It supports use in offline environments, and its effectiveness as a foundation for users to own and manage their own DIDs was confirmed.
did:ethr
This is a blockchain method utilizing the Ethereum testnet. As a DID management method with tamper resistance and transparency, it was confirmed that issuance, management, and resolution function correctly.
did:web
This is a method for managing DIDs linked to web domains. It has high affinity with existing corporate domains, and its effectiveness as a DID management method suitable for corporate use was confirmed.
Furthermore, issued DIDs were managed in association with email addresses, configured so that one user can hold multiple DIDs. DID information is permanently stored in the cloud environment and cached locally, confirming usability from multiple devices and in offline situations.
5. Verification of VC Issuance, Granting, and Verification
In this in-house trial, sample employee ID VCs were issued in JSON-LD format and granted to the DIDs of all 13 participants.
On the administrator side, the flow involved creating VC templates, setting certification names and images, selecting target users, and granting VCs to DIDs. On the employee side, the flow involved selecting their own DID from the DID display screen and verifying the issuer, issuance date, and detailed information on the VC display screen.
The VCs included information such as credentialSubject, issuer, issuanceDate, and expirationDate, and were issued and stored in a format where CAICA Technologies is recorded as the issuer. This confirmed the effectiveness of a mechanism where employees can verify certification information linked to themselves while ensuring the authenticity of the certification information.
6. Future Developments
Through this first phase of the in-house trial, CAICA Technologies confirmed that the basic flow from DID issuance, VC issuance and granting, to VC verification functions correctly.
Going forward, based on the technical and operational knowledge gained, the company will proceed with further verification of potential applications such as in-house awards, digital business cards, management of technical and work history, integration with performance evaluation systems, and internal communication tools.
Furthermore, in the future, the company aims to develop solutions for companies, financial institutions, and local governments, including digital ID management, qualification and certification information management, access rights management, and data authenticity verification, all utilizing DID/VC.
CAICA Technologies will continue to contribute to the realization of a safe, secure, and reliable digital society through the creation of innovative services by integrating blockchain and digital ID technologies.
Contact: Sales Department
Tel: 03-5657-3010
Email: info-sales@caica.jp
FAQ
What were the main results of CAICA Technologies' DID/VC trial?
With 13 participants, 15 DIDs were issued and 26 VCs were granted, achieving a 100% VC verification success rate, confirming technical validity.
Which DID methods were verified in this trial?
Three methods were verified: did:key, did:ethr, and did:web, all confirmed to function correctly.
What are the future application plans?
Potential applications include internal awards, digital business cards, technical career management, HR system integration, and internal communication tools.