Ftrain, by Paul Ford

Purely out of curiosity:

- 100 kg carbon per NFT [1]
- 180 tons steel per Richard Serra "Snake" [2]
- 1.85 tons (1,678 kg) CO2/ton steel [3]
= ~300,000 kg CO2 per "Snake"
= ~3,000 NFTs

[1] github.com/...
[2] artdex.com/...
[3] mckinsey.com/...