> Yes, but that's just a particular kind of tree, where each node only has one child. Yes! I’m personally building a SSB data structure that forks into a tree

> Yes, but that's just a particular kind of tree, where each node only has one child. Yes! I’m personally building a SSB data structure that forks into a tree, forking to allow writes from each new writer, to allow multi-device writes! It is a multi-writer append database that behaves like a CRDT. It’s a blocktree, not a blockchain. Which is also expressable as a merkledag.