CHECK

Overiew

Check provides the following 4 core services:

• ☑️ Verification Service: Verifies the authenticity of a web shop or any other web site by discovering the Decentralized Identifier and retrieving publicly linked Verifiable Credentials. Verifiable credentials allow any third party to determine the authenticity of the personal or legal identity that stands behind the visited web site.
• 🔍 Verification Service Interface: Visualizes the data from the Verification Service and provides an interactive query interface.
• ✨ Embedded Verification Inferace: Visualizes the data from the Verification Service as an trust mark that is embedded inside a web shop.
• 🔁 Verifiable Data Service: Verifies the authenticity of ecommerce customers by receiving Verifiable Credentials from customer wallets and providing the verified data to the web shop.

Demo Deployment

Frontend services with user interfaces

• 🔍 Verification Service Interface
• ✨🔁 Demo Shop: A demo web shop with a verifiable identity.
• ✨🔁 Evil Demo Shop: An evil demo web shop tries to claim the identity of Demo Shop by referencing its identity.
  • Technical explanation: Shop has it's own DID but the Well-Known DID Configuration has been copied straight from the Demo Shop.
• ✨🔁 Evil2 Demo Shop: A second evil demo web shop tries to claim the identity of Demo Shop by copying its the credentials.
  • Technical explanation: Shop has it's own DID and the Well-Known DID Configuration has been self-issued by that DID. Also the Linked Verifiable Presentation has been self-issued by that DID, however the included credentials have been copied from the Demo Shop.
• ✨🔁 Evil3 Demo Shop: A third evil demo web shop tries to claim the identity of Demo Shop by referencing its identity in a similar but different way than the first Evil Demo Shop.
  • Technical explanation: Shop has it's own DID and the Well-Known DID Configuration has been self-issued. However, the credentialSubject.id points to the Demo Shop's DID.

Backend services without user interfaces

• ☑️ Verification Service
• 🔁 Verifiable Data Service - Demo Shop
• 🔁 Verifiable Data Service - Evil Demo Shop
• 🔁 Verifiable Data Service - Evil2 Demo Shop
• 🔁 Verifiable Data Service - Evil3 Demo Shop

Development

Setup

1. Allow direnv to install dependencies automatically: direnv allow .
2. Request a cloudflare tunnel configuration so services like the Verifiable Data Service can be developed locally while being accessible from the Internet.
3. Store configuration in the current directory at .cloudflared/tunnel.json.
4. Set the tunnel user in file .env.local:

TUNNEL_USER=<your_username>

Start Services

1. Start caddy reverse proxy: just dev
2. (Optional) Start tunnel: just tunnel
3. Start services, e.g. cd ./services/demo-shop; just dev

Acknowledgments

This project has received funding from the European Union's Horizon 2020 research and innovation program within the framework of the TRUSTCHAIN Project funded under grant agreement 101093274.