🇩🇰 Danmark devs: Add CPR-nummer to the AI identity standard — Soulprint open source (30 min PR)

#opensource #ai #identity #webdev

Every day, AI agents make decisions on our behalf — buying, sending emails, signing documents — and nobody verifies there's a real human behind them.

Soulprint solves this with Zero-Knowledge Proofs: 100% on-device, open source (MIT), free to run. soulprint.digital

🇩🇰 Danmark's CPR-nummer is not in Soulprint yet. You can add it in ~30 minutes with one PR.

What Soulprint does

npx soulprint verify-me       # scan ID + face match — all local
# → SPT token (score 0-100)

# AI agent includes token in every call
# X-Soulprint: eyJ... (score: 84)

# API verifies in 3 lines:
import { requireSoulprint } from "soulprint-mcp";
server.tool("premium", requireSoulprint({ minScore: 80 }), handler);

ZK proof: Circom 2.1.8 · Groth16 · 844 constraints · 564ms prove · 25ms verify.

🇩🇰 Danmark: CPR-nummer

CPR: DDMMYY-XXXX (10 digits). Formerly had mod-11 check; check digit validation officially removed 2007 but still used.

The code — fill in the blanks and open a PR

// packages/verify-local/src/document/countries/DK.ts
import { CountryVerifier, DocumentResult, NumberValidation } from "../verifier.interface";

const DK: CountryVerifier = {
  countryCode:   "DK",
  countryName:   "Danmark",
  documentTypes: ["cpr"],

  parse(ocrText: string): DocumentResult {
    // CPR-nummer format: DDMMYY-XXXX
    const doc_number = ocrText.match(/(\d{6}-?\d{4})/)?.[1] ?? "";
    return { valid: !!doc_number, doc_number, country: "DK" };
  },

  validate(docNumber: string): NumberValidation {
    // 10 digits, optional mod-11
    return { valid: /^\d{6}-?\d{4}$/.test(docNumber) };
  },
};

export default DK;

Then add one line in registry.ts:

import DK from "./countries/DK";
// add to registry map: "DK": DK,

Open a PR → your country joins the global AI identity standard. 🌍

Why contribute?

Danmark joins the AI age — local developers can verify their AI agents
Permanent git credit — you're in the history forever
Decentralized identity — no Big Tech as gatekeeper
Fast — 30 min partial, 2-3h full with MRZ

Resources

One PR. One country. The future of AI identity is open source.

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