# NFTs

Built By DAO uses Non-Fungible Tokens (NFTs) to represent identity, membership, and investment status within the ecosystem.

***

{% hint style="info" %}

### 🎫 NFT Types

{% endhint %}

|  👤 Membership  |    💰 Investor   |
| :-------------: | :--------------: |
| Identity & rank | Investment proof |
|    14 levels    |      3 tiers     |
|    Soul-bound   |    Soul-bound    |
|      Earned     |     Purchased    |

{% hint style="info" %}
**🔒 All NFTs are Soul-Bound:** Cannot be transferred, sold, or traded
{% endhint %}

***

{% tabs %}
{% tab title="🎯 Overview" %}

### 🎯 NFTs in Built By DAO

#### Purpose of NFTs

| NFT Type              | Purpose                                     |
| --------------------- | ------------------------------------------- |
| 👤 **Membership NFT** | Prove identity and rank within the DAO      |
| 💰 **Investor NFT**   | Prove investment status and unlock benefits |

***

#### Why Soul-Bound?

| Reason                       | Explanation                                    |
| ---------------------------- | ---------------------------------------------- |
| 🛡️ **Prevents vote buying** | Can't acquire governance power from others     |
| 🔒 **Identity integrity**    | Status reflects actual contribution/investment |
| 🚫 **Anti-sybil**            | Can't split identity across wallets            |
| ✅ **Trust foundation**       | Status means something real                    |

***

#### NFT Standard

| Property            | Value                   |
| ------------------- | ----------------------- |
| 📜 **Standard**     | ERC-721                 |
| 🌐 **Network**      | Base (Ethereum L2)      |
| 📤 **Transferable** | No (soul-bound)         |
| 🔥 **Burnable**     | Yes (with restrictions) |
| {% endtab %}        |                         |

{% tab title="👤 Membership" %}

### 👤 Membership NFTs

#### What They Represent

| Aspect          | Description                          |
| --------------- | ------------------------------------ |
| 🆔 **Identity** | Unique identifier within DAO         |
| 📊 **Rank**     | Current level (1-10, with sublevels) |
| 🗳️ **Voting**  | Rank determines base voting weight   |
| 🔓 **Access**   | Higher ranks unlock more privileges  |

***

#### 14 Rank Levels

| Tier              | Ranks                          | Token IDs  |
| ----------------- | ------------------------------ | ---------- |
| 🌱 **Entry**      | Seeker, Apprentice             | 10, 15     |
| 💪 **Individual** | Contributor → Guide            | 20-60      |
| 👥 **Leadership** | Community Lead → Platform Lead | 70-85      |
| 🏛️ **Senior**    | Guardian → Steward             | 90-92      |
| ⭐ **Special**     | Council, Framer, Founder       | 95, 97, 99 |

***

#### How to Get One

| Step | Action                        |
| ---- | ----------------------------- |
| 1️⃣  | Complete DAO onboarding       |
| 2️⃣  | Pass initial training         |
| 3️⃣  | Mint at Seeker (10) level     |
| 4️⃣  | Progress through contribution |

👉 [Learn More About Membership NFTs](/token-economy/nfts/membership.md)
{% endtab %}

{% tab title="💰 Investor" %}

### 💰 Investor NFTs

#### Three Investment Tiers

| Tier              | Investment Range | Token ID Range |
| ----------------- | ---------------- | -------------- |
| 😇 **Angel**      | $10k - $250k     | 1000-9999      |
| 🚀 **VentureOne** | $500k - $5M      | 10000-49999    |
| 🏛️ **Trust**     | $5M+             | 50000-99999    |

***

#### What They Unlock

| Benefit                   | Description                     |
| ------------------------- | ------------------------------- |
| 🗳️ **Voting multiplier** | 1.5× to 5.0× based on tier      |
| 💎 **BLTBY allocation**   | Token discount (15-37%)         |
| 📊 **Reporting**          | Tier-based information access   |
| 🎉 **Events**             | Priority access and invitations |

***

#### Subtier System

Each tier has subtiers for more granular benefits:

| Tier          | Subtiers                |
| ------------- | ----------------------- |
| 😇 Angel      | 5 subtiers ($10k-$250k) |
| 🚀 VentureOne | 4 subtiers ($500k-$5M)  |
| 🏛️ Trust     | 4 subtiers ($5M-$100M+) |

👉 [Learn More About Investor NFTs](/token-economy/nfts/investor.md)
{% endtab %}

{% tab title="⚙️ Technical" %}

### ⚙️ Technical Implementation

#### Contract Architecture

| NFT           | Contract         | File                   |
| ------------- | ---------------- | ---------------------- |
| 👤 Membership | DAOMembershipNFT | `DAOMembershipNFT.sol` |
| 😇 Angel      | AngelNFT         | `AngelNFT.sol`         |
| 🚀 VentureOne | VentureOneNFT    | `VentureOneNFT.sol`    |
| 🏛️ Trust     | TrustNFT         | `TrustNFT.sol`         |

***

#### Soul-Bound Implementation

```solidity
// Transfers blocked except mint/burn
function _update(address to, uint256 tokenId, address auth) internal override {
    address from = _ownerOf(tokenId);
    if (from == address(0)) return super._update(to, tokenId, auth); // Mint OK
    if (to == address(0)) return super._update(to, tokenId, auth);   // Burn OK
    revert TransferNotAllowed();
}
```

***

#### Metadata

All NFTs include on-chain metadata:

| Field              | Content                    |
| ------------------ | -------------------------- |
| 🏷️ **Name**       | NFT title with ID          |
| 📝 **Description** | Type and status            |
| 🖼️ **Image**      | Tier/rank specific artwork |
| 📊 **Attributes**  | Level, date, multipliers   |
| {% endtab %}       |                            |

{% tab title="🔄 Lifecycle" %}

### 🔄 NFT Lifecycle

#### Membership NFT

```
1. Onboarding complete → Mint at Seeker
2. Contribution → Eligible for promotion
3. Review approved → Burn old, mint new rank
4. Inactivity/conduct → Possible demotion
5. Leave DAO → NFT burned
```

***

#### Investor NFT

```
1. KYC/AML verification → Approved
2. Investment completed → NFT minted
3. Additional investment → Subtier upgrade
4. Tier upgrade → Burn old, mint new tier
5. Permanent status → Cannot be revoked
```

***

#### Key Differences

| Aspect               | Membership      | Investor              |
| -------------------- | --------------- | --------------------- |
| 📈 **Can upgrade**   | Yes (promotion) | Yes (more investment) |
| 📉 **Can downgrade** | Yes (demotion)  | No                    |
| 🔥 **Can burn**      | Yes (leave DAO) | No (permanent)        |
| ⏱️ **Expiration**    | Can lapse       | Never                 |
| {% endtab %}         |                 |                       |
| {% endtabs %}        |                 |                       |

***

<details>

<summary>📊 NFT Comparison Table</summary>

| Aspect            | Membership NFT       | Investor NFT          |
| ----------------- | -------------------- | --------------------- |
| **Standard**      | ERC-721              | ERC-721               |
| **Soul-bound**    | Yes                  | Yes                   |
| **Purpose**       | Identity/rank        | Investment proof      |
| **Acquisition**   | Earned               | Purchased             |
| **Levels**        | 14 ranks             | 3 tiers (13 subtiers) |
| **Voting power**  | 1.0×-2.2× multiplier | 1.5×-5.0× multiplier  |
| **Upgradeable**   | Yes (promotion)      | Yes (more investment) |
| **Downgradeable** | Yes (demotion)       | No                    |
| **Revocable**     | Yes                  | No                    |

</details>

***

{% hint style="success" %}

### 🔗 Learn More

* 👤 [Membership NFT Details](/token-economy/nfts/membership.md) — Ranks and progression
* 💰 [Investor NFT Details](/token-economy/nfts/investor.md) — Tiers and benefits
* 🗳️ [Voting Power](/governance/voting.md) — How NFTs affect voting
  {% endhint %}

***

## 🔗 Related Pages

{% content-ref url="/pages/quCttx4UEHnQVcdKBRyp" %}
[Membership NFT](/token-economy/nfts/membership.md)
{% endcontent-ref %}

{% content-ref url="/pages/P4LgQFWfwAnJ6j5lSvEd" %}
[Investor NFTs](/token-economy/nfts/investor.md)
{% endcontent-ref %}

{% content-ref url="/pages/6hlRgEVSNtJTgWnUOpqT" %}
[Overview](/token-economy/tokens.md)
{% endcontent-ref %}

{% content-ref url="/pages/H2t9k9hEkNRQMEPxT69Y" %}
[Membership NFT](/membership/nft.md)
{% endcontent-ref %}


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