# Content NFTs

AI-generated content (text, images, audio, video, 3D, training data) can be minted as NFTs on Base.

## Base (ERC-721)

* **Contract**: [`0xdcCF8d2A328F87eDC304898a35F9798ad5Bf87e9`](https://basescan.org/address/0xdcCF8d2A328F87eDC304898a35F9798ad5Bf87e9)
* **Standard**: ERC-721 with ERC-2981 royalties (7.5%) and ERC721-C transfer validation
* Each user gets their own collection clone (ERC-1167 minimal proxy) via BonzaiCollectibles

### Per-Type Mint Fees

Each content type has its own mint fee, progressing naturally with the level system:

| Type      | Index | Required Level       | Mint Fee   |
| --------- | ----- | -------------------- | ---------- |
| Text      | 0     | LVL1 (1,000 BONZAI)  | 0.0005 ETH |
| Audio     | 1     | LVL2 (5,000 BONZAI)  | 0.001 ETH  |
| Image     | 2     | LVL3 (10,000 BONZAI) | 0.0015 ETH |
| Video     | 3     | LVL4 (25,000 BONZAI) | 0.0025 ETH |
| 3D Object | 4     | LVL5 (33,000 BONZAI) | 0.0035 ETH |
| Training  | 5     | LVL6 (50,000 BONZAI) | 0.005 ETH  |

> **Free minting for unlocked users**: Users who paid 1 ETH via [BonzaiUnlock](/web3-and-tokenomics/smart-contracts.md) mint all content types for free (0 ETH).

### Fee Distribution

| Recipient                    | Share |
| ---------------------------- | ----- |
| Treasury                     | 80%   |
| MintPool (content-type pool) | 20%   |

## Minting Process

1. **Generate content** using any AI pipeline (free)
2. **Click "Mint"** on the generated content
3. **Content uploaded** to IPFS via Pinata
4. **Metadata JSON** created and uploaded to IPFS
5. **On-chain mint** — calls `BonzaiCollectibles.mint()` with the IPFS metadata URI
6. **Token ID** returned from the `ContentMinted` event

### Metadata Format

Content NFTs use standard ERC-721 metadata with provenance fields:

```json
{
  "name": "AI-Generated Image #42",
  "description": "Created with BonzAI using FLUX",
  "image": "ipfs://...",
  "external_url": "https://bonzai.sh",
  "attributes": [
    { "trait_type": "Content Type", "value": "image" },
    { "trait_type": "Model", "value": "flux-klein" },
    { "trait_type": "Generator", "value": "BonzAI" }
  ]
}
```

## Secondary Royalties

The BonzaiRoyaltySplitter contract distributes secondary sale royalties:

| Recipient                       | Share |
| ------------------------------- | ----- |
| Treasury                        | 2/3   |
| MintPool (weighted by activity) | 1/3   |


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