Create collection using metaplex js sdk

Question

I would like to create a collection and then add nft to it. The code I use:

 const a = (
    await metaplex
      .nfts()
      .create({
        name: "My off-chain name",
        uri: "https://arweave.net/y5e5DJsiwH0s_ayfMwYk-SnrZtVZzHLQDSTZ5dNRUHA",
        sellerFeeBasisPoints: 250,
        isCollection: true,
      })
      .run()
  ).nft;

  const { nft } = await metaplex
    .nfts()
    .create({
      name: "My off-chain name",
      uri: "https://metadata.degods.com/g/9999.json",
      sellerFeeBasisPoints: 250,
      collection: findMetadataPda(a.mint.address),
    })
    .run();

  await metaplex.nfts().verifyCollection({
    mintAddress: nft.mint.address,
    collectionMintAddress: a.mint.address,
  });

the problem is that the above code snippet creates 2 separate nft but I would like the first nft to be the nft collection

Answer 1

What you're experiencing is correct.

A collection points to parent/collection NFT that is created and referenced to.

Your entire collection should point to the collection NFT you created.

For more information about MCC collections on Solana you can check out the Metaplex site below :)

https://docs.metaplex.com/programs/token-metadata/certified-collections#collection-nfts