diff --git a/704.md b/704.md index cd9c418..7d31600 100644 --- a/704.md +++ b/704.md @@ -56,7 +56,7 @@ We notate the above derived `direct message public key` with `dmpk`. Then we ca The client (creator of the `dmpk`) must: - use a new send key (`dmpk/0/`) for each event it signs. It starts from `0` and increments after an event is signed. - - create filters for the public keys it expects to receive messages to (`dmpk/1/`). It is recommended to listen for the next `10` keys. + - create filters for the public keys it expects to receive messages to (`dmpk/1/`). It is recommended to listen for the next `10` keys and increment the index once a key is used (see [BIP-44 address gap logic](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#user-content-Address_gap_limit)). ## Exchange the `direct message parent key` If `Alice` wants to signal `Bob` that she is ready to use this NIP (for more privacy) she must: