> Aztec.nr API reference, v6.0.0 (mainnet and testnet). Index: https://docs.aztec.network/aztec-nr-api/mainnet/llms.txt

# Module utils

Module: `noir_aztec::note::utils`

## Functions

- [compute_confirmed_note_hash_for_nullification](/aztec-nr-api/mainnet/noir_aztec/note/utils/fn.compute_confirmed_note_hash_for_nullification.md): Returns the note hash to use when computing its nullifier.
- [compute_note_existence_request](/aztec-nr-api/mainnet/noir_aztec/note/utils/fn.compute_note_existence_request.md): Returns the [`NoteExistenceRequest`](/aztec-nr-api/mainnet/noir_aztec/context/struct.NoteExistenceRequest.md) used to prove a note exists.
- [compute_note_hash](/aztec-nr-api/mainnet/noir_aztec/note/utils/fn.compute_note_hash.md): Computes a domain-separated note hash.
- [compute_note_hash_for_nullification](/aztec-nr-api/mainnet/noir_aztec/note/utils/fn.compute_note_hash_for_nullification.md): Unconstrained variant of [`compute_confirmed_note_hash_for_nullification`](/aztec-nr-api/mainnet/noir_aztec/note/utils/fn.compute_confirmed_note_hash_for_nullification.md).
- [compute_note_nullifier](/aztec-nr-api/mainnet/noir_aztec/note/utils/fn.compute_note_nullifier.md): Computes a domain-separated note nullifier.