How do NFT whitelists work on Ethereum? It's pretty simpleβlet's take a look at the @smilesssvrs smart contract to see how they did it π
https://twitter.com/smilesssvrs/status/1454978463291658241
1/ The contract has a state variable called "_mintStatus."
This determines whether minting is only open to people on the whitelist (Acts 1-4), or is open to the public (Public 1-2).
Each status is associated with a minting limit. E.g. during Act 1, one person can mint 9 NFTs.
This determines whether minting is only open to people on the whitelist (Acts 1-4), or is open to the public (Public 1-2).
Each status is associated with a minting limit. E.g. during Act 1, one person can mint 9 NFTs.
2/ Only the owner of the smart contract is allowed to change the status.
3/ The minting function is simple, it just calls a different function depending on "_mintStatus."
4/ Each minting function is pretty similar.
If the user has already minted the max amount of NFTs, the transaction fails.
Otherwise, a certain number of NFTs will be minted to the user.
The "premint" function also checks that the user is on the whitelist.
If the user has already minted the max amount of NFTs, the transaction fails.
Otherwise, a certain number of NFTs will be minted to the user.
The "premint" function also checks that the user is on the whitelist.
5/ How do people get onto the whitelist?
This is also pretty simple. There's a function called "addToPremintList" that's only callable by the contract's owner.
This function just adds a bunch of addresses to a mapping from addresses to mint statuses.
This is also pretty simple. There's a function called "addToPremintList" that's only callable by the contract's owner.
This function just adds a bunch of addresses to a mapping from addresses to mint statuses.
6/ For example, if 0x123 maps to MintStatus.ACT_I, then user 0x123 is on the whitelist for Act 1.
7/ That's it! Here's a quick recap:
- There's a state variable called "_mintStatus", only the owner can change it. It controls how minting works
- During Acts 1-4, only people on the whitelist can mint
- The whitelist can be updated by the contract's owner
- There's a state variable called "_mintStatus", only the owner can change it. It controls how minting works
- During Acts 1-4, only people on the whitelist can mint
- The whitelist can be updated by the contract's owner
8/ If you want to learn more about how NFTs work, head over here!
https://twitter.com/pencilflip/status/1450876008010330117
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