🧑‍🌾NFT Minting

NFT & MARKETPLACE ON SUPERWAL

NFT (Non-Fungible Token) is a crucial component of the SuperWAL ecosystem, enabling digital ownership authentication for assets such as art, music, virtual goods, in-game items, and Real-World Assets (RWA). Walchain Layer 1 provides a robust platform for minting, managing, and trading NFTs with low fees and high scalability.

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1. Creating and Managing NFTs on Walchain

1.1. Support for ERC-721 & ERC-1155 Standards

SuperWAL supports two widely used NFT standards, ensuring compatibility with other Web3 ecosystems:

• ERC-721: A unique NFT standard, where each token represents a distinct asset and cannot be replaced.

• ERC-1155: A multi-asset NFT standard, allowing both fungible and non-fungible tokens to be managed within a single smart contract.

📌 Comparison: ERC-721 vs. ERC-1155

Feature	ERC-721	ERC-1155
Token Type	Only supports NFTs	Supports both NFTs & FTs
Transaction Efficiency	Mints and trades tokens individually	Mints and trades multiple NFTs simultaneously
Storage	Each NFT has its own contract	Multiple NFTs can use a shared contract
Use Cases	Artwork, in-game items, unique ownership certificates	NFT collections, gaming items, batch-tradeable assets

SuperWAL supports both ERC-721 & ERC-1155, optimizing transaction costs and scalability for the NFT marketplace.

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1.2. NFT Minting Process on SuperWAL

Minting NFTs is the process of creating a unique NFT and recording it on the blockchain. SuperWAL offers a user-friendly minting interface, catering to both non-technical users and developers.

📌 Steps to Mint NFTs on SuperWAL

1️⃣ Prepare NFT Content

• Image, video, audio, or digital data.

• Metadata describing the NFT.

2️⃣ Deploy NFT Smart Contract

• Use ERC-721 or ERC-1155 standard.

• Define attributes such as name, quantity, ownership rights.

3️⃣ Store NFT Data

• IPFS (InterPlanetary File System) – decentralized storage ensuring data immutability.

• Arweave – permanent storage solution.

4️⃣ Mint NFT on the Blockchain

• Submit the minting transaction to Walchain.

• The smart contract records ownership and metadata.

5️⃣ NFT is Recorded and Ready for Trading

• NFT can be listed on the SuperWAL NFT Marketplace.

📌 Example: Solidity Code to Mint NFT on SuperWAL

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract SuperWALNFT is ERC721URIStorage, Ownable {
    uint256 private _tokenIds;

    constructor() ERC721("SuperWAL NFT", "SWNFT") {}

    function mintNFT(address recipient, string memory tokenURI) public onlyOwner returns (uint256) {
        _tokenIds++;
        uint256 newItemId = _tokenIds;
        _mint(recipient, newItemId);
        _setTokenURI(newItemId, tokenURI);
        return newItemId;
    }
}

🚀 This contract allows the creation of new NFTs, assigns metadata, and records ownership on Walchain.