solana-style-studio

      return jsonResponse(500, {        success: false,        message: 'Server wallet not configured. Please add SOLANA_DEVNET_KEYPAIR secret.',      });    }     const {      Connection,      Keypair,      PublicKey,      Transaction,      SystemProgram,      sendAndConfirmTransaction,      LAMPORTS_PER_SOL,    } = await import('npm:@solana/web3.js@1.98.2');     const {      TOKEN_PROGRAM_ID,      ASSOCIATED_TOKEN_PROGRAM_ID,      createInitializeMintInstruction,      createAssociatedTokenAccountInstruction,      createMintToInstruction,      createTransferInstruction,      getAssociatedTokenAddress,

1. Line 73 sendAndConfirmTransaction,: Submits the signed transaction to the cluster.
2. Line 82 createMintToInstruction,: Mints new tokens. The mint authority must sign.
3. Line 83 createTransferInstruction,: An SPL token transfer through the Token Program.

    // Instruction 3: Initialize mint    tx.add(createInitializeMintInstruction(mintAddress, 0, userPubkey, userPubkey, TOKEN_PROGRAM_ID));     // Instruction 4: Get/Create ATA for user    const userAta = await getAssociatedTokenAddress(      mintAddress, userPubkey, false, TOKEN_PROGRAM_ID, ASSOCIATED_TOKEN_PROGRAM_ID    );    tx.add(createAssociatedTokenAccountInstruction(      userPubkey, userAta, userPubkey, mintAddress, TOKEN_PROGRAM_ID, ASSOCIATED_TOKEN_PROGRAM_ID    ));     // Instruction 5: Mint 1 token    tx.add(createMintToInstruction(mintAddress, userAta, userPubkey, 1, [], TOKEN_PROGRAM_ID));     // Instruction 6: Create Metadata Account V3 (Metaplex)    const [metadataAddress] = PublicKey.findProgramAddressSync(      [Buffer.from("metadata"), MPL_TOKEN_METADATA_PROGRAM_ID.toBuffer(), mintAddress.toBuffer()],      MPL_TOKEN_METADATA_PROGRAM_ID    );     tx.add(createCreateMetadataAccountV3Instruction(      { metadata: metadataAddress, mint: mintAddress, mintAuthority: userPubkey, payer: userPubkey, updateAuthority: userPubkey },      { createMetadataAccountArgsV3: {        data: { name, symbol, uri: metadataUri, sellerFeeBasisPoints: 0, creators: null, collection: null, uses: null },

1. Line 145 tx.add(createMintToInstruction(mintAddress, userAta, userPubkey, 1, [], TOKEN_PROGRAM_ID)): Mints new tokens. The mint authority must sign.
2. Line 148 const [metadataAddress] = PublicKey.findProgramAddressSync(: Derives a PDA from seeds and the program ID and returns the address with its canonical bump.

      }       // Add transfer instruction (NFT amount = 1)      transaction.add(        createTransferInstruction(          fromTokenAccount,          toTokenAccount,          fromPubkey,          1,          [],          TOKEN_PROGRAM_ID        )      );       // Get recent blockhash      const { blockhash } = await connection.getLatestBlockhash();      transaction.recentBlockhash = blockhash;      transaction.feePayer = fromPubkey;       console.log('[escrow] Signing transaction via AppKit...');      const signed = await provider.signTransaction(transaction);       console.log('[escrow] Sending transaction...');      const signature = await connection.sendRawTransaction(signed.serialize());

1. Line 113 createTransferInstruction(: An SPL token transfer through the Token Program.
2. Line 124 const { blockhash } = await connection.getLatestBlockhash();: Fetches a recent blockhash. Transactions expire if it gets too old.

         const { blockhash } = await connection.getLatestBlockhash();        transaction.recentBlockhash = blockhash;        transaction.feePayer = publicKey;         const signedTx = await provider.signTransaction(transaction);        signature = await connection.sendRawTransaction(signedTx.serialize());         toast.info('Confirming transaction...');        await connection.confirmTransaction(signature, 'confirmed');        toast.success('SOL transferred to escrow!');      }       toast.info('Creating bid...');       const { data, error } = await supabase.functions.invoke('auction', {        body: {          action: 'bid',          auction_id,          bidder_wallet: address,          bid_price_lamports,          tx_signature: signature,        },      });

1. Line 62 const { blockhash } = await connection.getLatestBlockhash();: Fetches a recent blockhash. Transactions expire if it gets too old.
2. Line 76 const { data, error } = await supabase.functions.invoke('auction', {: Makes a cross-program invocation into another program.