Example: AI Aliens

We'll now show how all these pieces work together with our PFP collection, AI Aliens. On www.ai-alienx.xyz, users can mint aliens and update their metadata giving them nicknames. Go ahead and give it a try if you'd like to reward Garden Labs for this content and be whitelisted for our upcoming projects!

AI Aliens does three things: it 1) forks the example metadata program from Solana's Program Library, 2) implements the Field Authority Interface, and 3) assigns the Holder Metadata Program as a field authority for nickname.

Here's the client code example for updating an alien's nickname:

async function updateNickname(): Promise<void> {
    // Grab accounts ...

    await program.methods
        .updateHolderField(param, val)
        .accounts({
            mint,
            metadata,
            holderTokenAccount,
            holderMetadataPda,
            fieldPda,
            fieldAuthorityProgram: EXAMPLE_PROGRAM_ID,
            tokenProgram: TOKEN_2022_PROGRAM_ID,
        })
        .rpc();

    // Check new emmitted metadata ...
}

source code

As you can see, we're actually just making a call to the Holder Metadata Program – no code was needed from the AI Aliens collection. If you're developing an NFT project, you can use these same programs and add holder-editable fields with very little work!