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Minting NFTs

Learn how songs are minted as NFTs on AceSteps.

Signature-Based Minting​

AceSteps uses signature-based minting to ensure only AI-generated music is tokenized.

Flow​

  1. User creates music via AI prompt
  2. Backend generates signature (metadataURI + audioHash)
  3. User calls mint() with signature
  4. Contract verifies via ECDSA recovery
  5. NFT minted to user's wallet

Code Example​

function mint(
    string calldata metadataURI,
    bytes32 audioHash,
    bytes calldata signature
) external returns (uint256)

Metadata Structure​

{
  "name": "Song Title",
  "description": "Created with AceSteps",
  "audio": "ipfs://...",
  "image": "ipfs://...",
  "attributes": {
    "prompt": "original prompt",
    "duration": 30,
    "creator": "0x..."
  }
}

Gas Costs​

Minting on Base is cost-effective:

  • Typical mint: < $0.01