You created your NFT project, but now you want to promote it. Instead of airdropping the NFT spamming and pissing off a lot of people, just let them being incentivized to get your NFT. Run a giveaway. You can do it using Twitter or any other social network, but maybe you want to let the code to pick and reward the winners, since we believe the code is law. Let’s create an smart contract that handle the giveaway. Suppose your NFT have some traits and rarity. You can use those trait to pick the...