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Note Commitment Trees.

A note commitment tree is an incremental Merkle tree of fixed depth used to store note commitments that JoinSplit transfers or Spend transfers produce. Just as the unspent transaction output set (UTXO set) used in Bitcoin, it is used to express the existence of value and the capability to spend it. However, unlike the UTXO set, it is not the job of this tree to protect against double-spending, as it is append-only.

A root of a note commitment tree is associated with each treestate.

Modules

legacy

Sapling serialization legacy code.

Structs

EMPTY_ROOTS 🔒

List of “empty” Sapling note commitment nodes, one for each layer.

Node

A node of the Sapling Incremental Note Commitment Tree.

NoteCommitmentTree

Sapling Incremental Note Commitment Tree.

Root

Sapling note commitment tree root node hash.

Enums

NoteCommitmentTreeError

Constants

MERKLE_DEPTH 🔒

Functions

merkle_crh_sapling 🔒

MerkleCRH^Sapling Hash Function

Type Aliases

NoteCommitmentUpdate

The type that is used to update the note commitment tree.