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How to release NFT in batches in opensea (rinkeby test network)

2022-07-07 15:15:00 【Meta wuyanzu】

One 、 Generate NFT image

HashLips Art Engine It is a tool for creating multiple instances of different works of art based on the provided layers .

1. install

npm install
or
yarn install
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2. Use

stay “layers” Create different layers in the directory as folders , And add all layer resources in these directories . Once you have all the layers , Get into src/config.js And update the layerConfigurations Object's layersOrder Array , according to The order from low level to top level , Make it your layer folder name .

Of each layer object name Represents the name of the folder where the image is located （ stay /layers/ in ）.
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growEditionSizeTo： Number of generated images .
to update format Size , That is, the size of the output image .
shuffleLayerConfigurations The default is false, All images will be saved in numerical order . If set to true, The order in which images are saved will be confused .
You can also send a message to config.js In the document extraMetadata Add extra items to object variables (key: value) To add additional metadata for each metadata file .

const extraMetadata = {
    
  creator: "Tiger",
};

Debug script package.json

"scripts": {
    
    "build": "node index.js",
    "generate": "node index.js",
    "rarity": "node utils/rarity.js",
    "preview": "node utils/preview.js",
    "pixelate": "node utils/pixelate.js",
    "update_info": "node utils/update_info.js",
    "preview_gif": "node utils/preview_gif.js",
    "generate_metadata": "node utils/generate_metadata.js"
  }

2.1 Run the command node index.js（or npm run build） The output artwork will be in build/images Directory , and json stay build/json Directory .

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2.2 to update IPFS Of baseUri And description

src/config.js Medium baseUri = “ipfs://NewUriToReplace”

// General metadata for Ethereum
const namePrefix = "My Collection";
const description = "Remember to replace this description";
const baseUri = "ipfs://QmZwo1rMdDMErLx6csTjLEzhm6WpYDjJwciNq3KUVdc4GX";

QmZwo1rMdDMErLx6csTjLEzhm6WpYDjJwciNq3KUVdc4GX yes ipfs in images The folder CID.
Carry out orders ：node utils/update_info.js or npm run update_info
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2.3 Generate preview image

npm run preview

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2.4 Generate a pixelated image from a set

npm run pixelate

All images will be output to /build/pixel_images Directory . If you want to change the ratio of pixelation , You can update the file pixelFormat The ratio attribute of the object src/config.js. The lower the number on the left , The higher the degree of pixelation of the image .

const pixelFormat = {
    
  ratio: 5 / 128,
};

2.5 Print rare data

npm run rarity

Trait type: Bottom lid
{
    
  trait: 'High',
  weight: '20',
  occurrence: '26 in 100 editions (26.00 %)'
}
{
    
  trait: 'Low',
  weight: '40',
  occurrence: '33 in 100 editions (33.00 %)'
}
{
    
  trait: 'Middle',
  weight: '40',
  occurrence: '41 in 100 editions (41.00 %)'
}

Two 、 Upload the image to IPFS

1. install IPFS after , Select import , Click on folder , Choose images Folder and upload .

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2. to update json Information

Copy images The folder CID, Paste to src/config.js Medium baseUri in .
3. Carry out orders ：node utils/update_info.js or npm run update_info

3. Select import , Click on folder , Choose json Folder and upload .

3、 ... and 、NFT Intelligent contract

SimpleNft.sol

// SPDX-License-Identifier: MIT

// Amended by HashLips
/** !Disclaimer! These contracts have been used to create tutorials, and was created for the purpose to teach people how to create smart contracts on the blockchain. please review this code on your own before using any of the following code for production. HashLips will not be liable in any way if for the use of the code. That being said, the code has been tested to the best of the developers' knowledge to work as intended. */

pragma solidity >=0.7.0 <0.9.0;

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract NFT is ERC721Enumerable, Ownable {
    
    using Strings for uint256;

    string baseURI;
    string public baseExtension = ".json";
    uint256 public cost = 0.00001 ether;
    uint256 public maxSupply = 10000;
    uint256 public maxMintAmount = 20;
    bool public paused = false;
    bool public revealed = false;
    string public notRevealedUri;

    constructor(
        string memory _name,
        string memory _symbol,
        string memory _initBaseURI,
        string memory _initNotRevealedUri
    ) ERC721(_name, _symbol) {
    
        setBaseURI(_initBaseURI);
        setNotRevealedURI(_initNotRevealedUri);
    }

    // internal
    function _baseURI() internal view virtual override returns (string memory) {
    
        return baseURI;
    }

    // public
    function mint(uint256 _mintAmount) public payable {
    
        uint256 supply = totalSupply();
        require(!paused);
        require(_mintAmount > 0);
        require(_mintAmount <= maxMintAmount);
        require(supply + _mintAmount <= maxSupply);

        if (msg.sender != owner()) {
    
            require(msg.value >= cost * _mintAmount);
        }

        for (uint256 i = 1; i <= _mintAmount; i++) {
    
            _safeMint(msg.sender, supply + i);
        }
    }

    function walletOfOwner(address _owner)
        public
        view
        returns (uint256[] memory)
    {
    
        uint256 ownerTokenCount = balanceOf(_owner);
        uint256[] memory tokenIds = new uint256[](ownerTokenCount);
        for (uint256 i; i < ownerTokenCount; i++) {
    
            tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
        }
        return tokenIds;
    }

    function tokenURI(uint256 tokenId)
        public
        view
        virtual
        override
        returns (string memory)
    {
    
        require(
            _exists(tokenId),
            "ERC721Metadata: URI query for nonexistent token"
        );

        if (revealed == false) {
    
            return notRevealedUri;
        }

        string memory currentBaseURI = _baseURI();
        return
            bytes(currentBaseURI).length > 0
                ? string(
                    abi.encodePacked(
                        currentBaseURI,
                        tokenId.toString(),
                        baseExtension
                    )
                )
                : "";
    }

    //only owner
    function reveal() public onlyOwner {
    
        revealed = true;
    }

    function setCost(uint256 _newCost) public onlyOwner {
    
        cost = _newCost;
    }

    function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner {
    
        maxMintAmount = _newmaxMintAmount;
    }

    function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
    
        notRevealedUri = _notRevealedURI;
    }

    function setBaseURI(string memory _newBaseURI) public onlyOwner {
    
        baseURI = _newBaseURI;
    }

    function setBaseExtension(string memory _newBaseExtension)
        public
        onlyOwner
    {
    
        baseExtension = _newBaseExtension;
    }

    function pause(bool _state) public onlyOwner {
    
        paused = _state;
    }

    function withdraw() public payable onlyOwner {
    
        // This will pay HashLips 5% of the initial sale.
        // You can remove this if you want, or keep it in to support HashLips and his channel.
        // =============================================================================
        (bool hs, ) = payable(0x943590A42C27D08e3744202c4Ae5eD55c2dE240D).call{
    
            value: (address(this).balance * 5) / 100
        }("");
        require(hs);
        // =============================================================================

        // This will payout the owner 95% of the contract balance.
        // Do not remove this otherwise you will not be able to withdraw the funds.
        // =============================================================================
        (bool os, ) = payable(owner()).call{
    value: address(this).balance}("");
        require(os);
        // =============================================================================
    }
}

Constructors

constructor(
    string memory _name,
    string memory _symbol,
    string memory _initBaseURI,
    string memory _initNotRevealedUri
  ) ERC721(_name, _symbol) {
    
    setBaseURI(_initBaseURI);
    setNotRevealedURI(_initNotRevealedUri);
  }

_name：NFT name
_symbol：NFT Symbol
_initBaseURI： Set up BaseURI
_initNotRevealedUri： Set not to expose URI Display field of

stay Remix Last contract deployment

1. open Metamask

Switch Rinkeby The Internet
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2. remix Choose the execution environment

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3. Deploy contract transfer parameters

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_initBaseURI：“ipfs://QmVAQetWCZcX187qGu7heW3uEmdgPeGQhbdsv3YQc6PTTW/”
QmVAQetWCZcX187qGu7heW3uEmdgPeGQhbdsv3YQc6PTTW by json The folder CID.