Outstanding, truly. Yes yes yes yes yes and more yes. Thank you🎁💯🔥🎉

I like it. Can a "sub-tribe" (a tree under another leader) take their tree and leave, starting a new tribe with this node as the leader?

Technically nothing stops them, but in its current form, if any of the sub-tribe members stamp the original leader, member set is back at the original tribe, but with a reorganized hierarchy. To start a new tribe, - interference from the old tribe should be minimized - everyone down the hierarchy should acknowledge the new leader and his rules. I'm still thinking about ways to make real forks happen technically. If the new leader says "I accept old tribe's stamps up until the fork timestamp, and here is the new context that you have to use in your stamps", then it's possible I guess.

In quite a few ways it is what it is.

Can members easily leave a tribe? If so, I say don't require downstream members to have to "acknowledge" their "new leader". From their POV, whoever was directly above them was already their leader. If they don't like that their leader subscribed from HIS leader, it's up to them to leave.

That is a good question, I can see that you have dig in deeply. The answer is yes, or no, depending on what you mean by leaving the tribe. A tribe is basically a multi-level curation of pubkeys by the leader. In this sense you have no control over what tribes you are contributing to. So lets suppose there is a friendly tribe with good vibes, whose leader is Bob. And by leader I mean the chief, boss, CEO, alpha, whatever at the top of the hierarchy. Bob has put a lot of work into building a good tribe, and takes responsibility for it. Then Mr. Troll comes by, creates TrollTribe and stamps Bob. Now the Troll can trick people into believing that all these shiny people belong to TrollTribe. This is where the other side of the relationship becomes important. There should be a rough consensus among tribe members about who the tribe leader is, and they should state it publicly if possible. Otherwise a tribe cannot act a single cultural entity. By "acknowledging" the leader I meant that members explicitly consented that they want to READ content curated by Bob's tribe and they don't care about attackers who stamped Bob. This is why forking (as you described) is hard to do, and it's easier to spin off a new tribe, stamp everyone you like and advertise it as a new tribe, already with some content from your sub-tribe. I don't know if this is what you meant by leaving the tribe :) On the UI "leave tribe" button will probably just remove the acknowledgement of the leader and forget about the tribe. There's no way to control who curates your content anyway.

I like this.

This image radiates energy. ✨