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

# Module notes

Module: `noir_aztec::oracle::notes`

## Structs

- [NoteOrigin](/aztec-nr-api/mainnet/noir_aztec/oracle/notes/struct.NoteOrigin.md): Where a settled note was created.

## Functions

- [get_app_tagging_secret](/aztec-nr-api/mainnet/noir_aztec/oracle/notes/fn.get_app_tagging_secret.md): Returns the sender-side app tagging secret for a `(sender, recipient)` pair.
- [get_next_tagging_index](/aztec-nr-api/mainnet/noir_aztec/oracle/notes/fn.get_next_tagging_index.md): Returns the next sender-side tagging index for a given secret and delivery mode.
- [get_notes](/aztec-nr-api/mainnet/noir_aztec/oracle/notes/fn.get_notes.md)
- [get_settled_note_origin](/aztec-nr-api/mainnet/noir_aztec/oracle/notes/fn.get_settled_note_origin.md): Returns where the settled note with the given hash and nonce was created, or `None` if the note is unknown.
- [notify_created_note](/aztec-nr-api/mainnet/noir_aztec/oracle/notes/fn.notify_created_note.md): Notifies the simulator that a note has been created, so that it can be returned in future read requests in the same transaction. This note should only be added to the non-volatile database if found in an actual block.
- [notify_nullified_note](/aztec-nr-api/mainnet/noir_aztec/oracle/notes/fn.notify_nullified_note.md): Notifies the simulator that a note has been nullified, so that it is no longer returned in future read requests in the same transaction. This note should only be removed to the non-volatile database if its nullifier is found in an actual block.