For the developers who'll build the next layer.

// Issue a verifiable credential
import { Vessoul } from "@vessoul/sdk";

const client = new Vessoul({
  zone: "eu-sovereign-1",
  identity: process.env.VSSL_IDENTITY,
});

const credential = await client.credentials.issue({
  subject: "did:vssl:0x7a3f...e91",
  claims: { role: "admin", scope: ["read", "write"] },
  policy: {
    ttl: "30d",
    disclosure: "selective",
  },
});

// Returns a ZK-attested envelope
console.log(credential.proof);

// Verify anywhere, in milliseconds
const ok = await client.verify(credential.proof, {
  expect: { role: "admin" },
});

if (ok) grantAccess();