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.

Zach Kelling is the founder of Hanzo Industries.