nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq8369m6ejyjfh47ths7qrlvqcu8jvyzxnuysx72cpvg95jfvt9l0s7t2m30
Quite possibly.
SIM cards in Australia are 100% KYC, and therefore, not private.
Having said that, if Signal is tied to your phone number it is traceable, so unless you are using a ...