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Merkel Trees are fine, and are how things like "Git" keep track of different files (and how distributed hash tables and file-sharing often work).
Merkel Trees are trees-of-hashes, which the cryptocoin world wants us to believe go by the new name of 'Blockchain', but people familiar with comp. sci history know that they're just flailing about making shit up.
Blockchain is an application of Merkel Trees. Merkel Trees have lots of good uses, but Blockchain doesn't seem to have much use after 10+ years of experimentation.
Yo!
You seems to know what you're talking about, have you heard of Juliana trees? Like trees based only on the keys, so searching for a key takes len(key) time.
Bet there is an other name for it but I so remember like that and no web search says anything about it so I'm trying my luck here :-)
Same for robin hood hash trees :-D
Cheers
This sounds similar to a trie - maybe that’s what you were thinking of?