# License Issuance

## Issuance Process

When an application reaches final approval:

```
Final Approval
     │
     ▼
┌─────────────────┐
│ System creates  │
│ license record  │
└────────┬────────┘
         │
         ▼
┌─────────────────┐
│ NFT minted on   │
│ blockchain      │
└────────┬────────┘
         │
         ▼
┌─────────────────┐
│ Certificate     │
│ generated (PDF) │
└────────┬────────┘
         │
         ▼
┌─────────────────┐
│ Applicant       │
│ notified        │
└─────────────────┘
```

## Certificate Contents

Each issued certificate includes:

| Field | Description |
|-------|-------------|
| License Number | Unique identifier (GOA/DEPT/YEAR/SERIAL) |
| Holder Name | Legal name of licensee |
| License Type | Category of license |
| Issue Date | Date of issuance |
| Valid Until | Expiration date |
| Issuing Authority | Department name and officer |
| QR Code | Verification link |
| Digital Signature | Cryptographic signature |

## Blockchain Record

The NFT token contains:

```json
{
  "tokenId": "0x123...",
  "licenseNumber": "GOA/TRADE/2026/00001",
  "documentHash": "SHA256:abc...",
  "issuedAt": 1707500000,
  "issuedBy": "0xDeptAddress..."
}
```

## Verification

Anyone can verify a certificate:

1. Scan QR code on certificate
2. Or visit verification portal
3. Enter license number
4. System queries blockchain
5. Displays verification result

Verification shows:
- Valid/Invalid status
- License details
- Issuance history
- Current status (active/expired/revoked)

## Revocation

If a license must be revoked:

1. Department admin initiates revocation
2. Reason documented
3. Blockchain record updated (token burned)
4. Certificate marked as revoked
5. Holder notified