非代替性トークン(NFT)

NFT の作成方法

NFT を作成するには、次のことを行う必要があります:

Arweave のようなIPFSに画像をアップロード
jsonメタデータをArweaveなどのIPFSにアップロード
metaplexを呼び出してNFTのアカウントを作成

Arweaveにアップロード

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import fs from "fs";
import Arweave from "arweave";

(async () => {
  const arweave = Arweave.init({
    host: "arweave.net",
    port: 443,
    protocol: "https",
    timeout: 20000,
    logging: false,
  });

  // Upload image to Arweave
  const data = fs.readFileSync("./code/nfts/arweave-upload/lowres-dog.png");

  const transaction = await arweave.createTransaction({
    data: data,
  });

  transaction.addTag("Content-Type", "image/png");

  const wallet = JSON.parse(fs.readFileSync("wallet.json", "utf-8"))
  
  await arweave.transactions.sign(transaction, wallet);

  const response = await arweave.transactions.post(transaction);
  console.log(response);

  const id = transaction.id;
  const imageUrl = id ? `https://arweave.net/${id}` : undefined;
  console.log("imageUrl", imageUrl);

  // Upload metadata to Arweave

  const metadata = {
    name: "Custom NFT #1",
    symbol: "CNFT",
    description: "A description about my custom NFT #1",
    seller_fee_basis_points: 500,
    external_url: "https://www.customnft.com/",
    attributes: [
      {
        trait_type: "NFT type",
        value: "Custom",
      },
    ],
    collection: {
      name: "Test Collection",
      family: "Custom NFTs",
    },
    properties: {
      files: [
        {
          uri: imageUrl,
          type: "image/png",
        },
      ],
      category: "image",
      maxSupply: 0,
      creators: [
        {
          address: "CBBUMHRmbVUck99mTCip5sHP16kzGj3QTYB8K3XxwmQx",
          share: 100,
        },
      ],
    },
    image: imageUrl,
  };

  const metadataRequest = JSON.stringify(metadata);

  const metadataTransaction = await arweave.createTransaction({
    data: metadataRequest,
  });

  metadataTransaction.addTag("Content-Type", "application/json");

  await arweave.transactions.sign(metadataTransaction, wallet);

  console.log("metadata txid", metadataTransaction.id);

  console.log(await arweave.transactions.post(metadataTransaction));
})();

// 1. Upload image to Arweave
const data = fs.readFileSync("./code/nfts/arweave-upload/lowres-dog.png");

const transaction = await arweave.createTransaction({
  data: data,
});

transaction.addTag("Content-Type", "image/png");

const wallet = JSON.parse(fs.readFileSync("wallet.json", "utf-8"))
await arweave.transactions.sign(transaction, wallet);

const response = await arweave.transactions.post(transaction);
console.log(response);

const id = transaction.id;
const imageUrl = id ? `https://arweave.net/${id}` : undefined;

// 2. Upload metadata to Arweave

const metadataRequest = JSON.stringify(metadata);

const metadataTransaction = await arweave.createTransaction({
  data: metadataRequest,
});

metadataTransaction.addTag("Content-Type", "application/json");

await arweave.transactions.sign(metadataTransaction, wallet);

await arweave.transactions.post(metadataTransaction);

from arweave.arweave_lib import Wallet, Transaction, API_URL
import json

# Load your arweave wallet
your_ar_wallet = Wallet('wallet.json')

with open('./code/nfts/arweave-upload/lowres-dog.png', 'rb') as f:
    img_in_bytes = f.read()

# Upload image to Arweave
transaction = Transaction(your_ar_wallet, data=img_in_bytes)
transaction.add_tag('Content-Type', 'image/png')
transaction.sign()
transaction.send()

image_url = API_URL+"/"+transaction.id

# Define metadata
metadata = {
    "name": "Custom NFT #1",
    "symbol": "CNFT",
    "description": "A description about my custom NFT #1",
    "seller_fee_basis_points": 500,
    "external_url": "https://www.customnft.com/",
    "attributes": [
        {
            "trait_type": "NFT type",
            "value": "Custom"
        }
    ],
    "collection": {
        "name": "Test Collection",
        "family": "Custom NFTs",
    },
    "properties": {
        "files": [
            {
                "uri": image_url,
                "type": "image/png",
            },
        ],
        "category": "image",
        "maxSupply": 0,
        "creators": [
            {
                "address": "CBBUMHRmbVUck99mTCip5sHP16kzGj3QTYB8K3XxwmQx",
                "share": 100,
            },
        ],
    },
    "image": image_url,
}

# Upload metadata to Arweave
meta_transaction = Transaction(your_ar_wallet, data=json.dumps(metadata))
meta_transaction.add_tag('Content-Type', 'text/html')
meta_transaction.sign()
meta_transaction.send()

metadata_url = API_URL+"/"+meta_transaction.id

print(metadata_url)

#  1. Load your arweave wallet
your_ar_wallet = Wallet('wallet.json')

#  2. Upload image to Arweave
with open('./code/nfts/arweave-upload/lowres-dog.png', 'rb') as f:
    img_in_bytes = f.read()

transaction = Transaction(your_ar_wallet, data=img_in_bytes)
transaction.add_tag('Content-Type', 'image/png')
transaction.sign()
transaction.send()

image_url = API_URL+"/"+transaction.id

#  3. Upload metadata to Arweave
meta_transaction = Transaction(your_ar_wallet, data=json.dumps(metadata))
meta_transaction.add_tag('Content-Type', 'text/html')
meta_transaction.sign()
meta_transaction.send()

metadata_url = API_URL+"/"+meta_transaction.id

NFTをミント

画像とメタデータを既にアップロードしている場合は、次のコードを使用してNFTを作成できます。

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import { Metaplex, keypairIdentity } from "@metaplex-foundation/js";
import {
  Connection,
  clusterApiUrl,
  Keypair,
  LAMPORTS_PER_SOL,
} from "@solana/web3.js";
import dotenv from "dotenv";

dotenv.config();

(async () => {
  const connection = new Connection(clusterApiUrl("devnet"), "confirmed");
  const keypair = Keypair.fromSecretKey(
    Buffer.from(JSON.parse(process.env.SOLANA_KEYPAIR!.toString()))
  );

  const metaplex = new Metaplex(connection);
  metaplex.use(keypairIdentity(keypair));

  const feePayerAirdropSignature = await connection.requestAirdrop(
    keypair.publicKey,
    LAMPORTS_PER_SOL
  );
  await connection.confirmTransaction(feePayerAirdropSignature);

  const mintNFTResponse = await metaplex.nfts().create({
    uri: "https://ffaaqinzhkt4ukhbohixfliubnvpjgyedi3f2iccrq4efh3s.arweave.net/KUAIIbk6p8oo4XHRcq0U__C2r0mwQaNl0gQow4Qp9yk",
    maxSupply: 1,
  });

  console.log(mintNFTResponse);
})();

const mintNFTResponse = await metaplex.nfts().create({
  uri: "https://ffaaqinzhkt4ukhbohixfliubnvpjgyedi3f2iccrq4efh3s.arweave.net/KUAIIbk6p8oo4XHRcq0U__C2r0mwQaNl0gQow4Qp9yk",
  maxSupply: 1,
});

Note

ウォレットとは異なる作成者で NFT を作成することはできません。作成者の問題が発生した場合は、メタデータに作成者として記載されていることを確認してください。

NFTメタデータの取得方法

Metaplex NFTには、Arweaveに保存されているメタデータがあります。Arweave メタデータを取得するには、Metaplex PDAを取得してアカウントデータをデコードする必要があります。

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import { Metaplex, keypairIdentity } from "@metaplex-foundation/js";
import { Connection, clusterApiUrl, Keypair, PublicKey } from "@solana/web3.js";

(async () => {
  const connection = new Connection(clusterApiUrl("mainnet-beta"));
  const keypair = Keypair.generate();

  const metaplex = new Metaplex(connection);
  metaplex.use(keypairIdentity(keypair));

  const mintAddress = new PublicKey(
    "Ay1U9DWphDgc7hq58Yj1yHabt91zTzvV2YJbAWkPNbaK"
  );

  const nft = await metaplex.nfts().findByMint({ mintAddress });

  console.log(nft.json);
  /*
  {
    name: 'SMB #139',
    symbol: 'SMB',
    description: 'SMB is a collection of 5000 randomly generated 24x24 pixels NFTs on the Solana Blockchain. Each SolanaMonkey is unique and comes with different type and attributes varying in rarity.',
    seller_fee_basis_points: 600,
    image: 'https://arweave.net/tZrNpbFUizSoFnyTqP4n2e1Tf7WvP3siUwFWKMMid_Q',
    external_url: 'https://solanamonkey.business/',
    collection: { name: 'SMB Gen2', family: 'SMB' },
    attributes: [
      { trait_type: 'Attributes Count', value: 2 },
      { trait_type: 'Type', value: 'Solana' },
      { trait_type: 'Clothes', value: 'Orange Shirt' },
      { trait_type: 'Ears', value: 'None' },
      { trait_type: 'Mouth', value: 'None' },
      { trait_type: 'Eyes', value: 'Cool Glasses' },
      { trait_type: 'Hat', value: 'None' }
    ],
    properties: {
      files: [ [Object], [Object] ],
      category: 'image',
      creators: [ [Object] ]
    }
  }
  */
})();

const connection = new Connection(clusterApiUrl("mainnet-beta"));
const keypair = Keypair.generate();

const metaplex = new Metaplex(connection);
metaplex.use(keypairIdentity(keypair));

const mintAddress = new PublicKey(
  "Ay1U9DWphDgc7hq58Yj1yHabt91zTzvV2YJbAWkPNbaK"
);

const nft = await metaplex.nfts().findByMint({ mintAddress });

console.log(nft.json);

NFTの所有者を取得する方法

NFTのミントキーを持っている場合、そのミントキーの最大のトークンアカウントを覗き見ることで、現在の所有者を見つけることができます。

NFTの供給量は1であり、分割できないことを覚えておいてください。つまり、ある時点で1つのトークンアカウントだけがそのトークンを保持し、そのミントキーの他のすべてのトークンアカウントの残高は0になります。

最大のトークンアカウントが特定されると、その所有者を取得できます。

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import { Connection, PublicKey } from "@solana/web3.js";

(async () => {
  const connection = new Connection("https://api.mainnet-beta.solana.com");
  const tokenMint = "9ARngHhVaCtH5JFieRdSS5Y8cdZk2TMF4tfGSWFB9iSK";

  const largestAccounts = await connection.getTokenLargestAccounts(
    new PublicKey(tokenMint)
  );
  const largestAccountInfo = await connection.getParsedAccountInfo(
    largestAccounts.value[0].address
  );
  console.log(largestAccountInfo.value.data.parsed.info.owner);
  /*
    PublicKey {
        _bn: <BN: 6ddf6e1d765a193d9cbe146ceeb79ac1cb485ed5f5b37913a8cf5857eff00a9>
    }
     */
})();

const connection = new Connection("https://api.mainnet-beta.solana.com");
const tokenMint = "9ARngHhVaCtH5JFieRdSS5Y8cdZk2TMF4tfGSWFB9iSK";
const largestAccounts = await connection.getTokenLargestAccounts(
  new PublicKey(tokenMint)
);
const largestAccountInfo = await connection.getParsedAccountInfo(
  largestAccounts.value[0].address
);
console.log(largestAccountInfo.value.data.parsed.info.owner);

NFTミントアドレスを取得する方法

Candy Machineの公開鍵がわかっている場合は、次のコードを使用して、そのCandy Machineから生成されたすべての NFT ミントアドレスのリストを取得できます。次のmemcmpフィルターを使用できることに注意してください。これは、v1では最初の作成者が常にCandy Machineのアドレスであるためです。

Candy Machine V1

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import { Connection, clusterApiUrl, PublicKey } from "@solana/web3.js";
import bs58 from "bs58";

const connection = new Connection(clusterApiUrl("mainnet-beta"));
const MAX_NAME_LENGTH = 32;
const MAX_URI_LENGTH = 200;
const MAX_SYMBOL_LENGTH = 10;
const MAX_CREATOR_LEN = 32 + 1 + 1;
const MAX_CREATOR_LIMIT = 5;
const MAX_DATA_SIZE =
  4 +
  MAX_NAME_LENGTH +
  4 +
  MAX_SYMBOL_LENGTH +
  4 +
  MAX_URI_LENGTH +
  2 +
  1 +
  4 +
  MAX_CREATOR_LIMIT * MAX_CREATOR_LEN;
const MAX_METADATA_LEN = 1 + 32 + 32 + MAX_DATA_SIZE + 1 + 1 + 9 + 172;
const CREATOR_ARRAY_START =
  1 +
  32 +
  32 +
  4 +
  MAX_NAME_LENGTH +
  4 +
  MAX_URI_LENGTH +
  4 +
  MAX_SYMBOL_LENGTH +
  2 +
  1 +
  4;

const TOKEN_METADATA_PROGRAM = new PublicKey(
  "metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s"
);
const candyMachineId = new PublicKey("ENTER_YOUR_CANDY_MACHINE_ID_HERE");

const getMintAddresses = async (firstCreatorAddress: PublicKey) => {
  const metadataAccounts = await connection.getProgramAccounts(
    TOKEN_METADATA_PROGRAM,
    {
      // The mint address is located at byte 33 and lasts for 32 bytes.
      dataSlice: { offset: 33, length: 32 },

      filters: [
        // Only get Metadata accounts.
        { dataSize: MAX_METADATA_LEN },

        // Filter using the first creator.
        {
          memcmp: {
            offset: CREATOR_ARRAY_START,
            bytes: firstCreatorAddress.toBase58(),
          },
        },
      ],
    }
  );

  return metadataAccounts.map((metadataAccountInfo) =>
    bs58.encode(metadataAccountInfo.account.data)
  );
};

getMintAddresses(candyMachineId);

const getMintAddresses = async (firstCreatorAddress: PublicKey) => {
  const metadataAccounts = await connection.getProgramAccounts(
    TOKEN_METADATA_PROGRAM,
    {
      // The mint address is located at byte 33 and lasts for 32 bytes.
      dataSlice: { offset: 33, length: 32 },

      filters: [
        // Only get Metadata accounts.
        { dataSize: MAX_METADATA_LEN },

        // Filter using the first creator.
        {
          memcmp: {
            offset: CREATOR_ARRAY_START,
            bytes: firstCreatorAddress.toBase58(),
          },
        },
      ],
    }
  );

  return metadataAccounts.map((metadataAccountInfo) =>
    bs58.encode(metadataAccountInfo.account.data)
  );
};

getMintAddresses(candyMachineId);

Candy Machine V2

Candy Machine v2 を使用している場合は、最初にcandy_machineと Candy Machinev2アドレスをシードとして使用する単純なPDAである「Candy Machine Creator」アドレスにアクセスする必要があります。

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import { Connection, clusterApiUrl, PublicKey } from "@solana/web3.js";
import bs58 from "bs58";

const connection = new Connection(clusterApiUrl("mainnet-beta"));
const MAX_NAME_LENGTH = 32;
const MAX_URI_LENGTH = 200;
const MAX_SYMBOL_LENGTH = 10;
const MAX_CREATOR_LEN = 32 + 1 + 1;
const MAX_CREATOR_LIMIT = 5;
const MAX_DATA_SIZE =
  4 +
  MAX_NAME_LENGTH +
  4 +
  MAX_SYMBOL_LENGTH +
  4 +
  MAX_URI_LENGTH +
  2 +
  1 +
  4 +
  MAX_CREATOR_LIMIT * MAX_CREATOR_LEN;
const MAX_METADATA_LEN = 1 + 32 + 32 + MAX_DATA_SIZE + 1 + 1 + 9 + 172;
const CREATOR_ARRAY_START =
  1 +
  32 +
  32 +
  4 +
  MAX_NAME_LENGTH +
  4 +
  MAX_URI_LENGTH +
  4 +
  MAX_SYMBOL_LENGTH +
  2 +
  1 +
  4;

const TOKEN_METADATA_PROGRAM = new PublicKey(
  "metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s"
);
const CANDY_MACHINE_V2_PROGRAM = new PublicKey(
  "cndy3Z4yapfJBmL3ShUp5exZKqR3z33thTzeNMm2gRZ"
);
const candyMachineId = new PublicKey("ENTER_YOUR_CANDY_MACHINE_ID_HERE");

const getMintAddresses = async (firstCreatorAddress: PublicKey) => {
  const metadataAccounts = await connection.getProgramAccounts(
    TOKEN_METADATA_PROGRAM,
    {
      // The mint address is located at byte 33 and lasts for 32 bytes.
      dataSlice: { offset: 33, length: 32 },

      filters: [
        // Only get Metadata accounts.
        { dataSize: MAX_METADATA_LEN },

        // Filter using the first creator.
        {
          memcmp: {
            offset: CREATOR_ARRAY_START,
            bytes: firstCreatorAddress.toBase58(),
          },
        },
      ],
    }
  );

  return metadataAccounts.map((metadataAccountInfo) =>
    bs58.encode(metadataAccountInfo.account.data)
  );
};

const getCandyMachineCreator = async (
  candyMachine: PublicKey
): Promise<[PublicKey, number]> =>
  PublicKey.findProgramAddress(
    [Buffer.from("candy_machine"), candyMachine.toBuffer()],
    CANDY_MACHINE_V2_PROGRAM
  );

(async () => {
  const candyMachineCreator = await getCandyMachineCreator(candyMachineId);
  getMintAddresses(candyMachineCreator[0]);
})();

const getCandyMachineCreator = async (
  candyMachine: PublicKey
): Promise<[PublicKey, number]> =>
  PublicKey.findProgramAddress(
    [Buffer.from("candy_machine"), candyMachine.toBuffer()],
    CANDY_MACHINE_V2_PROGRAM
  );

const candyMachineCreator = await getCandyMachineCreator(candyMachineId);
getMintAddresses(candyMachineCreator[0]);

ウォレットからすべての NFT を取得するには？

ウォレットからすべてのNFTを取得する場合、すべてのトークンアカウントを取得してから、どれがNFTであるかを解析する必要があります。これはすべて、Metaplex JSライブラリのfindDataByOwneropen in new windowを使用すれば可能です。

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import { Metaplex, keypairIdentity } from "@metaplex-foundation/js";
import { Connection, clusterApiUrl, Keypair, PublicKey } from "@solana/web3.js";

(async () => {
  const connection = new Connection(clusterApiUrl("mainnet-beta"), "confirmed");
  const keypair = Keypair.generate();

  const metaplex = new Metaplex(connection);
  metaplex.use(keypairIdentity(keypair));

  const owner = new PublicKey("2R4bHmSBHkHAskerTHE6GE1Fxbn31kaD5gHqpsPySVd7");
  const allNFTs = await metaplex.nfts().findAllByOwner({ owner });

  console.log(allNFTs);
})();

const connection = new Connection(clusterApiUrl("mainnet-beta"), "confirmed");
const keypair = Keypair.generate();

const metaplex = new Metaplex(connection);
metaplex.use(keypairIdentity(keypair));

const owner = new PublicKey("2R4bHmSBHkHAskerTHE6GE1Fxbn31kaD5gHqpsPySVd7");
const allNFTs = await metaplex.nfts().findAllByOwner({ owner });

console.log(allNFTs);

Candy Machine v2

Metaplex JS SDKは、コードによるCandy Machine v2の作成と更新をサポートするようになりました。これにより、開発者はCandy Machine v2プログラムと対話し、Candy Machineを作成、更新、削除したり、そこからNFTを作成したりできます。

Candy Machineの作成方法

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import {
  keypairIdentity,
  Metaplex,
  sol,
  toBigNumber,
} from "@metaplex-foundation/js";
import { Keypair, Connection, LAMPORTS_PER_SOL } from "@solana/web3.js";

const createCandyMachine = async () => {
  const connection = new Connection(
    "https://api.devnet.solana.com/",
    "confirmed"
  );
  const payer = Keypair.generate();

  // request airdrop
  const airdropSignature = await connection.requestAirdrop(
    payer.publicKey,
    2 * LAMPORTS_PER_SOL
  );

  console.log(`Airdrop signature - ${airdropSignature}`);

  // creating metaplex instance with payer as the authority
  const metaplex = Metaplex.make(connection).use(keypairIdentity(payer));

  // creating a candy machine
  const { candyMachine } = await metaplex.candyMachinesV2().create({
    sellerFeeBasisPoints: 5, // 0.05% royalties
    price: sol(0.0001), // 0.0001 SOL
    itemsAvailable: toBigNumber(5), // 5 items available
  });

  console.log(`Candy Machine ID - ${candyMachine.address.toString()}`);
};

createCandyMachine();

const { candyMachine } = await metaplex.candyMachinesV2().create({
  sellerFeeBasisPoints: 5, // 0.05% royalties
  price: sol(0.0001), // 0.0001 SOL
  itemsAvailable: toBigNumber(5), // 5 items available
});

/**
 * #1 Candy Machine ID - HSZxtWx6vgGWGsWu9SouXkHA2bAKCMtMZyMKzF2dvhrR
 */

Candy Machineの削除方法

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import {
  Metaplex,
  keypairIdentity,
  sol,
  toBigNumber,
} from "@metaplex-foundation/js";
import { Connection, Keypair, LAMPORTS_PER_SOL } from "@solana/web3.js";

const deleteCandyMachine = async () => {
  const connection = new Connection(
    "https://api.devnet.solana.com/",
    "confirmed"
  );
  const payer = Keypair.generate();

  // request airdrop
  const airdropSignature = await connection.requestAirdrop(
    payer.publicKey,
    2 * LAMPORTS_PER_SOL
  );

  console.log(`Airdrop signature - ${airdropSignature}`);

  // creating metaplex instance with payer as the authority
  const metaplex = Metaplex.make(connection).use(keypairIdentity(payer));

  // creating a candy machine
  const { candyMachine } = await metaplex.candyMachinesV2().create({
    sellerFeeBasisPoints: 5, // 0.05% royalties
    price: sol(0.0001), // 0.0001 SOL
    itemsAvailable: toBigNumber(5), // 5 items available
  });

  console.log(`Candy Machine ID - ${candyMachine.address.toString()}`);

  // deleting the candy machine
  const { response } = await metaplex.candyMachinesV2().delete({
    candyMachine,
  });

  console.log(`Delete Candy Machine signature - ${response.signature}`);
};

deleteCandyMachine();

// creating a candy machine
const { candyMachine } = await metaplex.candyMachinesV2().create({
  sellerFeeBasisPoints: 5, // 0.05% royalties
  price: sol(0.0001), // 0.0001 SOL
  itemsAvailable: toBigNumber(5), // 5 items available
});

console.log(`Candy Machine ID - ${candyMachine.address.toString()}`);

// deleting the candy machine
const { response } = await metaplex.candyMachinesV2().delete({
  candyMachine,
});

authorityを介してCandy Machineを探す方法

authorityが特定の公開鍵であるすべてのCandy Machineを見つけるには、type パラメータをauthorityとしてfindAllByopen in new window関数を使用します。

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import { Connection, PublicKey } from "@solana/web3.js";
import { Metaplex } from "@metaplex-foundation/js";

const findCandyMachineViaAuthority = async () => {
  const connection = new Connection(
    "https://api.devnet.solana.com/",
    "confirmed"
  );
  const metaplex = new Metaplex(connection);
  const authority = new PublicKey(
    "9pr8wNxphx2PhBRbHKuH7YhPs5zbDuxx62UcDiayXxrw"
  );

  const candyMachines = await metaplex.candyMachinesV2().findAllBy({
    type: "authority",
    publicKey: authority,
  });

  candyMachines.map((candyMachine, index) => {
    console.log(`#${index + 1} Candy Machine ID - ${candyMachine.address}`);
  });

  /**
   * #1 Candy Machine ID - HSZxtWx6vgGWGsWu9SouXkHA2bAKCMtMZyMKzF2dvhrR
   */
};

findCandyMachineViaAuthority();

const candyMachines = await metaplex.candyMachinesV2().findAllBy({
  type: "authority",
  publicKey: authority,
});

candyMachines.map((candyMachine, index) => {
  console.log(`#${index + 1} Candy Machine ID - ${candyMachine.address}`);
});

/**
 * #1 Candy Machine ID - HSZxtWx6vgGWGsWu9SouXkHA2bAKCMtMZyMKzF2dvhrR
 */

ウォレットアドレスを使用してCandy Machineを見つける方法

ウォレットアドレスを介してCandy Machine オブジェクトを取得するには、 type パラメータをwalletとしてfindAllByopen in new window関数を使用します。 Candy Machine のウォレットアドレスは、エクスプローラーの [Anchor data] タブから取得できます。

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import { Connection, PublicKey } from "@solana/web3.js";
import { Metaplex } from "@metaplex-foundation/js";

const findCandyMachineViaWallet = async () => {
  const connection = new Connection(
    "https://api.devnet.solana.com/",
    "confirmed"
  );
  const metaplex = new Metaplex(connection);
  const wallet = new PublicKey("9pr8wNxphx2PhBRbHKuH7YhPs5zbDuxx62UcDiayXxrw");

  const candyMachines = await metaplex.candyMachinesV2().findAllBy({
    type: "wallet",
    publicKey: wallet,
  });

  candyMachines.map((candyMachine, index) => {
    console.log(`#${index + 1} Candy Machine ID - ${candyMachine.address}`);
  });

  /**
   * #1 Candy Machine ID - HSZxtWx6vgGWGsWu9SouXkHA2bAKCMtMZyMKzF2dvhrR
   */
};

findCandyMachineViaWallet();

const candyMachines = await metaplex.candyMachinesV2().findAllBy({
  type: "wallet",
  publicKey: wallet,
});

candyMachines.map((candyMachine, index) => {
  console.log(`#${index + 1} Candy Machine ID - ${candyMachine.address}`);
});

アドレスを使用してCandy Machineを探す方法

アドレスを使用してCandy Machineを見つけるには、findByAddressopen in new window関数を使用する必要があります。

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import { Connection, PublicKey } from "@solana/web3.js";
import { Metaplex } from "@metaplex-foundation/js";

const findCandyMachineViaAddress = async () => {
  const connection = new Connection(
    "https://api.devnet.solana.com/",
    "confirmed"
  );
  const metaplex = new Metaplex(connection);
  const candyMachineId = new PublicKey(
    "HSZxtWx6vgGWGsWu9SouXkHA2bAKCMtMZyMKzF2dvhrR"
  );

  const candyMachine = await metaplex.candyMachinesV2().findByAddress({
    address: candyMachineId,
  });
};

findCandyMachineViaAddress();

Candy MachineからミントされたNFTを見つける方法

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import { Connection, PublicKey } from "@solana/web3.js";
import { Metaplex } from "@metaplex-foundation/js";

const findCandyMachineMintedNfts = async () => {
  const connection = new Connection(
    "https://api.devnet.solana.com/",
    "confirmed"
  );
  const metaplex = new Metaplex(connection);
  const candyMachineId = new PublicKey(
    "HSZxtWx6vgGWGsWu9SouXkHA2bAKCMtMZyMKzF2dvhrR"
  );

  const candyMachine = await metaplex.candyMachinesV2().findMintedNfts({
    candyMachine: candyMachineId,
  });
};

findCandyMachineMintedNfts();

Candy Machineにアイテムを挿入する方法

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import { Connection, PublicKey } from "@solana/web3.js";
import { Metaplex } from "@metaplex-foundation/js";

const insertItems = async () => {
  const connection = new Connection(
    "https://api.devnet.solana.com/",
    "confirmed"
  );
  const metaplex = new Metaplex(connection);
  const candyMachineId = new PublicKey(
    "HSZxtWx6vgGWGsWu9SouXkHA2bAKCMtMZyMKzF2dvhrR"
  );

  await metaplex.candyMachines().insertItems({
    candyMachineId,
    items: [
      { name: "My NFT #1", uri: "https://example.com/nft1" },
      { name: "My NFT #2", uri: "https://example.com/nft2" },
      { name: "My NFT #3", uri: "https://example.com/nft3" },
    ],
  });
};

insertItems();

await metaplex.candyMachines().insertItems({
  candyMachineId,
  items: [
    { name: "My NFT #1", uri: "https://example.com/nft1" },
    { name: "My NFT #2", uri: "https://example.com/nft2" },
    { name: "My NFT #3", uri: "https://example.com/nft3" },
  ],
});

Candy MachineからNFTをミントする方法

デフォルトでは、作成された NFT の所有者はmetaplex.identity().publicKeyになります。NFT を他のウォレットに発行する場合は、その公開鍵をnewOwnerパラメータとともに渡します。

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import { Connection, PublicKey } from "@solana/web3.js";
import { Metaplex } from "@metaplex-foundation/js";

const mintNft = async () => {
  const connection = new Connection(
    "https://api.devnet.solana.com/",
    "confirmed"
  );
  const metaplex = new Metaplex(connection);
  const candyMachineId = new PublicKey(
    "HSZxtWx6vgGWGsWu9SouXkHA2bAKCMtMZyMKzF2dvhrR"
  );

  // by default, the owner of the minted nft would be `metaplex.identity().publicKey`. if you want to mint the nft to some other wallet, pass that public key along with the `newOwner` parameter
  const candyMachine = await metaplex.candyMachinesV2().mint({
    candyMachine: candyMachineId,
    // newOwner: new PublicKey("some-other-public-key");
  });
};

mintNft();

// by default, the owner of the minted nft would be `metaplex.identity().publicKey`. if you want to mint the nft to some other wallet, pass that public key along with the `newOwner` parameter
const candyMachine = await metaplex.candyMachinesV2().mint({
  candyMachine: candyMachineId,
  // newOwner: new PublicKey("some-other-public-key");
});

# 非代替性トークン(NFT)

# NFT の作成方法

# Arweaveにアップロード

# NFTをミント

# NFTメタデータの取得方法

# NFTの所有者を取得する方法

# NFTミントアドレスを取得する方法

# Candy Machine V1

# Candy Machine V2

# ウォレットからすべての NFT を取得するには？

# Candy Machine v2

# Candy Machineの作成方法

# Candy Machineの削除方法

# authorityを介してCandy Machineを探す方法

# ウォレットアドレスを使用してCandy Machineを見つける方法

# アドレスを使用してCandy Machineを探す方法

# Candy MachineからミントされたNFTを見つける方法

# Candy Machineにアイテムを挿入する方法

# Candy MachineからNFTをミントする方法

非代替性トークン(NFT)

NFT の作成方法

Arweaveにアップロード

NFTをミント

NFTメタデータの取得方法

NFTの所有者を取得する方法

NFTミントアドレスを取得する方法

Candy Machine V1

Candy Machine V2

ウォレットからすべての NFT を取得するには？

Candy Machine v2

Candy Machineの作成方法

Candy Machineの削除方法

authorityを介してCandy Machineを探す方法

ウォレットアドレスを使用してCandy Machineを見つける方法

アドレスを使用してCandy Machineを探す方法

Candy MachineからミントされたNFTを見つける方法

Candy Machineにアイテムを挿入する方法

Candy MachineからNFTをミントする方法