👍 Added examples to mint Compressed NFTs

compressed-nfts/CNFTvZm6BPd5ZH2Lbn3mMnSsUYWirqjvRWo9wbcbfAB2.json

@@ -0,0 +1 @@
+[163,191,238,222,165,10,196,219,229,157,128,66,219,37,37,137,230,137,252,234,163,154,232,213,75,96,189,118,2,192,220,227,168,226,27,159,122,121,34,241,0,179,208,143,53,28,173,200,205,132,163,204,167,203,73,5,177,44,177,96,24,90,78,249]

compressed-nfts/CoLNfQzbj4nmGgG1XxFMDaebknRZLcztS7V6Umngb9An.json

@@ -0,0 +1 @@
+[246,254,110,193,43,97,213,126,71,247,230,76,57,115,124,27,82,141,189,212,168,21,70,220,222,53,134,19,135,83,195,130,175,79,45,216,48,217,128,189,145,148,243,172,30,134,15,162,92,232,55,141,228,72,21,124,80,108,183,3,218,195,74,183]

compressed-nfts/TREyXNrxJSgrsWoYKU5xo8XYNCBNoZnSBdP5PkC1W2B.json

@@ -0,0 +1 @@
+[198,123,251,189,215,99,58,111,17,19,25,26,121,152,53,110,133,101,9,49,17,19,255,94,177,194,181,46,118,100,141,129,6,196,130,166,155,106,83,52,123,142,240,222,51,94,141,240,236,134,47,251,115,163,210,99,94,236,228,125,144,213,0,104]

compressed-nfts/createTree.ts

@@ -0,0 +1,61 @@
+import { createCreateTreeInstruction, PROGRAM_ID as BUBBLEGUM_PROGRAM_ID } from "@metaplex-foundation/mpl-bubblegum";
+import { loadWalletKey, sendVersionedTx } from "./utils";
+import { Connection, Keypair, PublicKey, SystemProgram, Transaction, VersionedMessage } from "@solana/web3.js";
+import { SPL_ACCOUNT_COMPRESSION_PROGRAM_ID, SPL_NOOP_PROGRAM_ID, ValidDepthSizePair, getConcurrentMerkleTreeAccountSize } from "@solana/spl-account-compression";
+import { SYSTEM_PROGRAM_ID } from "@raydium-io/raydium-sdk";
+
+async function createTree() {
+  // Load the wallet key for the user who will create the merkle tree
+  const keypair = loadWalletKey("CNFTvZm6BPd5ZH2Lbn3mMnSsUYWirqjvRWo9wbcbfAB2.json");
+
+  // Create a connection to the network
+  const connection = new Connection("https://api.devnet.solana.com");
+
+  // Load the wallet key for the merkle tree account
+  const merkleTree = loadWalletKey("TREyXNrxJSgrsWoYKU5xo8XYNCBNoZnSBdP5PkC1W2B.json");
+
+  // Find the tree authority public key and bump seed
+  const [treeAuthority, _bump] = PublicKey.findProgramAddressSync(
+    [merkleTree.publicKey.toBuffer()],
+    BUBBLEGUM_PROGRAM_ID,
+  );
+
+  // Define the depth and buffer size of the merkle tree
+  const depthSizePair: ValidDepthSizePair = {
+    maxDepth: 14,
+    maxBufferSize: 64,
+  };
+
+  // Calculate the required account space for the merkle tree
+  const space = getConcurrentMerkleTreeAccountSize(depthSizePair.maxDepth, depthSizePair.maxBufferSize);
+
+  // Create an account instruction to allocate space for the merkle tree
+  const createAccountIx = SystemProgram.createAccount({
+    newAccountPubkey: merkleTree.publicKey,
+    fromPubkey: keypair.publicKey,
+    space: space,
+    lamports: await connection.getMinimumBalanceForRentExemption(space),
+    programId: SPL_ACCOUNT_COMPRESSION_PROGRAM_ID,
+  });
+
+  // Create a merkle tree instruction
+  const createTreeIx = createCreateTreeInstruction({
+    merkleTree: merkleTree.publicKey,
+    treeAuthority: treeAuthority,
+    payer: keypair.publicKey,
+    treeCreator: keypair.publicKey,
+    compressionProgram: SPL_ACCOUNT_COMPRESSION_PROGRAM_ID,
+    logWrapper: SPL_NOOP_PROGRAM_ID,
+    systemProgram: SYSTEM_PROGRAM_ID,
+  }, {
+    maxDepth: depthSizePair.maxDepth,
+    maxBufferSize: depthSizePair.maxBufferSize,
+    public: false,
+  });
+
+  // Send the transaction with both instructions
+  const sx = await sendVersionedTx(connection, [createAccountIx, createTreeIx], keypair.publicKey, [keypair, merkleTree]);
+  console.log(sx);
+}
+
+createTree();

compressed-nfts/package.json

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+{
+  "dependencies": {
+    "@metaplex-foundation/mpl-bubblegum": "^0.6.2",
+    "@raydium-io/raydium-sdk": "^1.3.0-beta.17",
+    "@solana/spl-token": "^0.3.7"
+  }
+}

compressed-nfts/utils.ts

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+import { Connection, Keypair, PublicKey, Signer, TransactionInstruction, TransactionMessage, VersionedTransaction } from "@solana/web3.js";
+
+export function loadWalletKey(keypairFile:string): Keypair {
+    const fs = require ("fs")
+    return Keypair. fromSecretKey(
+        new Uint8Array(JSON.parse(fs.readFileSync(keypairFile).toString())),
+    );
+}
+export async function sendVersionedTx(
+        connection: Connection, 
+        instructions: TransactionInstruction[], 
+        payer: PublicKey,
+        signers: Signer[]){
+        let latestBlockhash = await connection.getLatestBlockhash()
+        const messageLegacy = new TransactionMessage({
+            payerKey: payer,
+            recentBlockhash: latestBlockhash.blockhash,
+            instructions,
+        }).compileToLegacyMessage();
+        const transation = new VersionedTransaction(messageLegacy)
+        transation.sign(signers);
+        const signature = await connection.sendTransaction(transation);
+        return signature;
+    }