NFT (ERC-721)

Pallet Precompile

Use this precompile to interact with the nft runtime pallet to create an ERC-721 collection.

Contract Address

0x00000000000000000000000000000000000006b9

Solidity Interfaces

interface TRNNFT {
  event InitializeCollection(address indexed collectionOwner, address precompileAddress);
  function initializeCollection(address owner, bytes calldata name, uint32 maxIssuance, bytes calldata metadataPath, address[] calldata royaltyAddresses, uint32[] calldata royaltyEntitlements) external returns (address, uint32);
}

Token Precompile

Contract Address

The ERC-721 contract address for The Root Network native non-fungible token uses the following format:

0xAAAAAAAA[4-byte-collection-id]000000000000000000000000

To make things easier, the @therootnetwork/evm provides a handy function to convert token asset ID to its equivalent contract address.

import { collectionIdToERC721Address } from "@therootnetwork/evm";

const COLLECTION_ID = 1;
const COLLECTION_CONTRACT_ADDRESS = collectionIdToERC721Address(COLLECTION_ID);

Solidity Interfaces

interface IERC721 {
  event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
  event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
  event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

  function balanceOf(address owner) external view returns (uint256 balance);
  function ownerOf(uint256 tokenId) external view returns (address owner);
  function safeTransferFrom(address from, address to, uint256 tokenId) external;
  function transferFrom(address from, address to, uint256 tokenId) external;
  function approve(address to, uint256 tokenId) external;
  function getApproved(uint256 tokenId) external view returns (address operator);
  function setApprovalForAll(address operator, bool _approved) external;
  function isApprovedForAll(address owner, address operator) external view returns (bool);
  function safeTransferFrom(address from,address to,uint256 tokenId,bytes calldata data) external;
}

interface IERC721Metadata is IERC721 {
  function name() external view returns (string memory);
  function symbol() external view returns (string memory);
  function tokenURI(uint256 tokenId) external view returns (string memory);
}

interface TRN721 {
  event MaxSupplyUpdated(uint32 maxSupply);
  event BaseURIUpdated(string baseURI);

  function totalSupply() external view returns (uint256);
  function mint(address owner, uint32 quantity) external;
  function setMaxSupply(uint32 maxSupply) external;
  function setBaseURI(bytes calldata baseURI) external;
  function ownedTokens(address who, uint16 limit, uint32 cursor) external view returns (uint32, uint32, uint32[] memory);
}

interface Ownable {
  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

  function owner() external view returns (address);
  function renounceOwnership() external;
  function transferOwnership(address owner) external;
}