Identity NFTs: Portable Commerce Identity

Customer identity is fragmented. Every platform maintains separate profiles. Reputation does not transfer. Preferences stay locked in silos. Today we are introducing Identity NFTs: portable commerce identity on the blockchain.

The Identity Problem

Current state:

• Customer has accounts on 50+ commerce platforms
• Purchase history scattered across platforms
• Loyalty points expire or trap value
• Reviews and reputation reset with each platform
• Preferences must be re-entered everywhere

This hurts customers (fragmented experience) and merchants (incomplete customer view).

Identity NFTs

An Identity NFT is a blockchain-based identity token that:

• You own: Stored in your wallet, controlled by you
• Aggregates data: Connects activity across platforms
• Portable: Use anywhere that accepts it
• Privacy-preserving: Share what you choose

How It Works

Minting

import { IdentityNFT } from '@hanzo/identity';

// Customer mints their identity
const identity = await IdentityNFT.mint({
  wallet: customerWallet,
  initialData: {
    preferences: { ... },
    verified: { email: true }
  }
});

Connecting Platforms

// On any platform supporting Identity NFTs
const connection = await platform.connectIdentity(identity, {
  share: ['purchase_history', 'preferences'],
  receive: ['loyalty_points', 'reviews']
});

Data Flow

Customer Identity NFT
        ↑ ↓
┌───────┴────────┐
│  Aggregated    │
│    Profile     │
└───────┬────────┘
    ↑ ↓   ↑ ↓   ↑ ↓
Platform Platform Platform
    A        B        C

Each platform contributes and accesses data with customer permission.

Features

Reputation Portability

Reviews and ratings aggregate across platforms:

{
  "reputation": {
    "total_reviews": 47,
    "average_rating": 4.8,
    "verified_purchases": 43,
    "platforms": ["hanzo", "platform_b", "platform_c"]
  }
}

New platforms see your established reputation.

Loyalty Aggregation

Points and rewards consolidate:

{
  "loyalty": {
    "total_value": "$234.50",
    "programs": [
      { "platform": "hanzo", "points": 15000, "value": "$150" },
      { "platform": "platform_b", "points": 8450, "value": "$84.50" }
    ]
  }
}

Use aggregated loyalty anywhere participating.

Preference Sync

Preferences transfer automatically:

{
  "preferences": {
    "sizes": { "shirt": "M", "pants": "32x32" },
    "style": ["minimalist", "sustainable"],
    "communication": { "email": true, "sms": false }
  }
}

No more re-entering the same information.

Verified Credentials

Attestations from trusted sources:

{
  "verified": {
    "email": { "verified": true, "verifier": "hanzo" },
    "age_21_plus": { "verified": true, "verifier": "id_provider" },
    "address": { "verified": true, "verifier": "shipping_provider" }
  }
}

Privacy Model

Customers control data sharing:

• Selective disclosure: Share specific attributes, not everything
• Zero-knowledge proofs: Prove claims without revealing data
• Revocable access: Disconnect platforms anytime
• Encrypted storage: Data encrypted, keys controlled by customer

Example: Prove age 21+ without revealing birthdate:

const proof = await identity.prove({
  claim: 'age_gte',
  value: 21,
  to: platform
});

Technical Implementation

Smart Contract

Identity NFT contract on Ethereum (with L2 support):

contract IdentityNFT {
    mapping(uint256 => bytes32) public dataHashes;
    mapping(uint256 => mapping(address => Permission)) public permissions;

    function updateData(uint256 tokenId, bytes32 dataHash) external;
    function grantPermission(uint256 tokenId, address platform, Permission perm) external;
    function revokePermission(uint256 tokenId, address platform) external;
}

Off-Chain Data

Actual data stored off-chain with:

• Customer-controlled encryption
• Decentralized storage (IPFS/Arweave)
• Hash anchored on-chain for integrity

For Merchants

Benefits of accepting Identity NFTs:

• Richer customer profiles from day one
• Verified information reduces fraud
• Loyalty interoperability drives traffic
• Reputation transfer builds trust

Integration:

import { IdentityProvider } from '@hanzo/identity';

const provider = new IdentityProvider({
  apiKey: 'xxx',
  permissions: ['read:preferences', 'write:purchases']
});

// Check if customer has Identity NFT
const identity = await provider.resolve(walletAddress);
if (identity) {
  const preferences = await identity.getPreferences();
  // Personalize experience immediately
}

Roadmap

• Q4 2022: Beta launch on Hanzo platform
• Q1 2023: Partner platform integrations
• Q2 2023: Mobile wallet support
• Q3 2023: Cross-chain identity bridges

What's Next

Identity NFTs are infrastructure for the next generation of commerce. Own your identity. Control your data. Take it anywhere.