Brave and reckless people can switch to #bitcoin from testnet and see their coins
Discussion
Now I see that nostr:npub18d4r6wanxkyrdfjdrjqzj2ukua5cas669ew2g5w7lf4a8te7awzqey6lt3 is already using similar visualization.
They have it logically at the level of a specific address. I assume it’s correctly because they don't want people shoving xpubs in there. 