github.com/filecoin-project/go-hamt-ipld/v4
This package is a reference implementation of the IPLD HAMT used in the Filecoin blockchain. It includes some optional flexibility such that it may be used for other purposes outside of Filecoin.
HAMT is a "hash array mapped trie". This implementation extends the standard form by including buckets for the key/value pairs at storage leaves and CHAMP mutation semantics. The CHAMP invariant and mutation rules provide us with the ability to maintain canonical forms given any set of keys and their values, regardless of insertion order and intermediate data insertion and deletion. Therefore, for any given set of keys and their values, a HAMT using the same parameters and CHAMP semantics, the root node should always produce the same content identifier (CID).
See https://godoc.org/github.com/filecoin-project/go-hamt-ipld for more information and API details.
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