Verifiable Credential Service

A lightweight service providing verifiable credential functionalities based on swift-express-graphql.

Cryptographic Algorithm

Functionality	Algorithm	Curve
VC/VP Hashing	SHA256
VC/VP Proof Signing	EdDSA	Ed25519

Proof value = Sign(Hash(Doc \ Proof))

Feature

• Issue VCs/VPs.
• VC persistence.
• Verify VCs/VPs offline.
• Verify VCs/VPs online (with VDR and VC persistence).
• VC resolving by REST and GraphQL
• Administration.

Quickstart

By Docker Compose

1. Duplicate .env.example as .env and configure environment variables;
2. Configure Dockerfile and docker-compose.yml;
3. Compose and run containers.

docker compose up -d

By Docker

1. Duplicate .env.example as .env and configure environment variables;
2. Configure Dockerfile;
3. Build Docker image

docker build -t vcs .

3. Run in container

docker run -p <host_port>:<container_port> --name <container_name> -d vcs

Manually

1. Install dependencies

yarn install

2. Duplicate .env.example as .env and configure environment variables;

3. Build project to dist;

npm run build

4. Run project.

npm run start

Development

• Run dev server

yarn dev

API

GraphQL

domain/graphql

REST

domain/api-docs

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References

• Verifiable Credentials Data Model v1.1
• Decentralized Identifiers (DIDs) v1.0
• Javascript Object Signing and Encryption
• swift-express-graphql
• jose