He said: "It makes you think about food waste, planning what to do with leftovers, so I think ironically collecting people's food waste is going to cut down on food waste.
NFTs also contain smart contracts—small computer programs that run on the blockchain—that give the artist, for example, a cut of any future sale of the token.
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代码里画了一个爱心形状的 2D 路径，然后给它一个厚度，它就变成了一个 3D 的爱心。