Contract Source Code (Solidity)

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Outline

•  contract BasicNonFungibleToken *
•    - function name()
•    - function symbol()
•    - function totalSupply()
•    - function ownerOf(uint256 tokenId)
•    - function transferFrom(address from, a ...

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/**
 *Submitted for verification at Etherscan.io on 2024-04-23
*/

pragma solidity ^0.8.0;

/**
 * @title BasicFungibleToken
 * @dev The core functionality for a basic fungible token contract
 */
contract BasicNonFungibleToken {

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Token supply
    uint256 _supply;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Sets the initial values
     */
    constructor(string memory name_, string memory symbol_, address initialTokenReceiver) {
        _name = name_;
        _symbol = symbol_;
        _owners[0] = initialTokenReceiver;
        _owners[1] = initialTokenReceiver;
        _owners[2] = initialTokenReceiver;
        _owners[3] = initialTokenReceiver;
        _owners[4] = initialTokenReceiver;
    }


    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of tokens currently in this NFT collection.
     */
    function totalSupply() public view returns (uint256) {
        return _supply;
    }

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) public view returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "Invalid Token - Token does not exist");
        return owner;
    }

    /**
     * @dev Transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, the caller must be have been allowed to move this token by {approve}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) public {
        
        require(from == msg.sender, "Only token owner can send token");
        require(_owners[tokenId] == from, "Transfer from incorrect owner");
        require(to != address(0), "Transfer to the zero address");

        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

    }

}

[{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"},{"internalType":"address","name":"initialTokenReceiver","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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