>>13492

Since blockchains have come up several times now:

interdasting datastructures for blockchains and distributed systems

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https://en.wikipedia.org/wiki/Merkle_tree

https://en.wikipedia.org/wiki/Linked_timestamping

https://en.wikipedia.org/wiki/Skip_graph
https://en.wikipedia.org/wiki/Skip_list
>QMap (up to Qt 4) template class of Qt that provides a dictionary.
kek