{"message":"CertCode API - Secure QR Code Certification Service","version":"2.0.0","security":"Frontend-only access with rate limiting and origin validation","endpoints":{"create_certificate":"POST /api/create-certificate","verify_certificate":"POST /api/verify-certificate (Frontend only)","certificate_info":"POST /api/certificate-info (Frontend only)","browser_app_link":"GET /api/_/{token_or_code}","qr_code_image":"GET /api/qr-code/{cert_code}","qr_code_download":"GET /api/qr-code/{cert_code}/download","health":"GET /api/health","stats":"GET /api/stats"},"qr_code_format":"Pure certificate code (CC + 24 hex chars)","note":"QR codes contain only certificate codes, not URLs. Verification only through authorized frontend."}