Add it to the list:
https://bisq.wiki/Trade_Protocols
quotingJust throwing it out there because it's one of the crazier ecash ideas: A crypto exchange but the trades happen peer to peer via ecash.
note1923…lcs7
- Alice: deposit BTC to exchange, get BTC ecash
- Bob: same but USD, ETH, whatever shitcoin
- They trade BTC/USD ecash off-band (through nostr obviously), atomic
- Bob withdraws BTC, Alice USD