NFT Mint

NFT collection management with on-chain metadata

Pending Anchor 0.32

Program ID HoNCn3uuMYzQ83i4zjHWhUqEBY9DNEqJfu9vKJF8NQWU

Repository ExpertVagabond/solana-nft-mint

Binary Size 248K

Cluster Devnet

Instructions

IX create_collection

Creates a new NFT collection with a name, symbol, and maximum supply cap.

Parameter	Type	Description
`name`	`String`	Collection name (max 32 characters)
`symbol`	`String`	Collection symbol (max 8 characters)
`max_supply`	`u64`	Maximum number of NFTs that can be minted

IX mint_nft

Mints a new NFT within the collection, storing the metadata URI hash on-chain.

Parameter	Type	Description
`uri_hash`	`[u8; 32]`	SHA-256 hash of the metadata URI (JSON stored off-chain)

IX update_metadata

Updates the metadata URI hash for an existing NFT. Only callable by the collection authority.

Parameter	Type	Description
`new_uri_hash`	`[u8; 32]`	New SHA-256 hash of the updated metadata URI

Accounts

Collection

Field	Type	Description
`authority`	`Pubkey`	Collection creator and admin
`name`	`String`	Collection name
`symbol`	`String`	Collection ticker symbol
`max_supply`	`u64`	Maximum mintable NFTs
`current_supply`	`u64`	Number of NFTs already minted
`bump`	`u8`	PDA bump seed

NftMetadata

Field	Type	Description
`collection`	`Pubkey`	The collection this NFT belongs to
`mint`	`Pubkey`	SPL token mint for this NFT
`token_id`	`u64`	Sequential token ID within the collection
`creator`	`Pubkey`	Wallet that minted this NFT
`uri_hash`	`[u8; 32]`	Hash of the metadata URI
`created_at`	`i64`	Unix timestamp of minting
`bump`	`u8`	PDA bump seed

PDA Derivation

collection

seeds = [b"collection", authority]

metadata

seeds = [b"metadata", collection, nft_mint]

Error Codes

NameTooLong Collection name exceeds the maximum 32 character limit

SymbolTooLong Collection symbol exceeds the maximum 8 character limit

MaxSupplyReached Cannot mint more NFTs - maximum supply has been reached

Overflow Arithmetic overflow in supply tracking

Usage Example

import { Program, BN } from "@coral-xyz/anchor";
import { PublicKey, Keypair } from "@solana/web3.js";
import { createHash } from "crypto";

// Create collection
const [collectionPda] = PublicKey.findProgramAddressSync(
  [Buffer.from("collection"), authority.publicKey.toBuffer()],
  program.programId
);

await program.methods
  .createCollection("My NFT Collection", "MNFT", new BN(10_000))
  .accounts({
    collection: collectionPda,
    authority: authority.publicKey,
  })
  .signers([authority])
  .rpc();

// Mint an NFT
const nftMint = Keypair.generate();
const uriHash = createHash("sha256")
  .update("https://arweave.net/abc123/metadata.json")
  .digest();

await program.methods
  .mintNft([...uriHash])
  .accounts({
    collection: collectionPda,
    nftMint: nftMint.publicKey,
    creator: authority.publicKey,
  })
  .signers([authority, nftMint])
  .rpc();

Solana Programs