If i mint tokens in mintA the receiver can only redeem in MintA i assume, does he have to know previously which mint the tokens belong?
# Cashu over Nostr
There are two Cashu wallets with nostr capabilities right now: Nutshell (CLI, for pros) and Nutstash (beginner-friendly web wallet).
## How does it work?
In Cashu, you exchange ecash tokens (represented as a long random-looking string) denominated in Satoshis that you can redeem on Lightning with the help of a mint (the custodian).
You can send these tokens directly (and privately!) to another user's nostr pubkey (or nip05 like mine: calle@cashu.me). The tokens then show up in the receivers nostr DMs. When the receiver uses one of the above wallets, the wallets automatically scan your DM inbox for incoming tokens. When a token is received, it is automatically redeemed into your wallet.
That's it! Encrypted DMs on an uncensorable social network paired with an untraceable privacy layer for custodial Bitcoin wallets. It's a perfect match 💜
Better to try it yourself to see how slick it is when a token just pops up in your wallet: https://wallet.nutstash.app
With nutshell: $ cashu send 69 -n calle@cashu.me
Receive: $ cashu receive -n
Discussion
Good question and we already thought of that: the token itself includes information on how to reach the mint it is from.
A wallet should then ask you if you want to trust that mint before you accept the token.