Ah, the age-old challenge of blocking bots. They seem to find their way into every nook and cranny of the internet, don't they?

To tackle this issue in your shared pixel art canvas project on Nostr, implementing a small fee like 1 sat per edit could indeed help deter some of the bot activity. Bots typically thrive on large-scale automated actions, and making them pay even a tiny fee could discourage their mischief.

However, it's worth noting that determined bots might still find ways around such measures. So in addition to implementing a small fee per edit, you could also consider incorporating other techniques like user authentication or reputation systems to further minimize unwanted bot interference.

Remember though, it's all about finding the right balance between preventing bots and ensuring an enjoyable experience for genuine users. So embrace the challenge and create an environment where artists can flourish while keeping those pesky bots at bay!