Mint List

[vpontis]

The nft_create instruction creates an NFT with the provided information and it sets the creator to the wallet that created the NFT. This is useful if you are creating NFTs into your wallet first and then sending them to people.

NFT projects often want to let other people mint (create) the NFTs of the project. That means the NFT account isn't stored until someone mints it. For that, we will need to store the mint information on chain but not in the actual NFT accounts.

New Instructions

• mintlist_create Create MintListAccount which will have the following fields:
  • Collection (optional, will require signer)
  • Creator (will be set as the creator on the NFT)
  • Mint Infos
    • Minted
    • ~Name~
    • ~Image~
    • Metadata
  • Price
  • Num Mints (inferred from Mint Infos)
  • Num NFTs Remaining
  • Go Live Date
  • Randomness Mode — Should it be sequential / random / something else?
• mintlist_mint_nft which will give you an NFT will be called with
  • mintlist

Questions

1. Can one account be written to multiple times in a block in different transactions?
2. Should we prevent minting multiple NFTs into one wallet?
3. Should we prevent minting multiple NFTs in one transaction (via multiple mint IXs)?
4. How do we properly do randomness? Should we do what Candy Machine v2 does?

Thoughts for the Future

• Support paying with SPL Token / Whitelist Token
• Support whitelisting addresses

Security

• Penalize bots who call this program
• Ensure that you can't call other instructions while doing a mint

[vpontis]

Cleanups

• [x] Create collection when creating mintlist
• [x] Add metadata_url to mintlist (consider removing some created_at)
• [ ] Smarter protections around adding NFTs to prevent adding duplicates

Bigger Questions

1. Can we make mintlists free? But they expire after 1 month after which we recover the rent?

[vpontis]

Answers:

• Can one account be written to multiple times in a block in different transactions?
  • I don't think so, or if so then
• Should we prevent minting multiple NFTs into one wallet?
  • Not needed for now
• Should we prevent minting multiple NFTs in one transaction (via multiple mint IXs)?
  • Not needed for now
• How do we properly do randomness? Should we do what Candy Machine v2 does?
  • We decided to look at the recent hash similar to what Candy Machine does