I think about how easily I could spin up a mint backed by 0 Bitcoin and I get concerned.
Discussion
Consider about how quickly this fraud would be noticed. The second anyone tried swapping you'd be caught and your mint would be ostracized by the community.
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IMO the issue isn’t ecash zaps. It’s how will nostr users identify trustworthy mints without everyone just consolidating to a small handful of custodial mints. We’ll come full circle.
Even if WoS and Custodial Alby switched to Cashu and they were the only two mints custodial users used, we'd be in a substantially better place than we are today.
Cashu and custodial lightning do not have identical risks. Cashu is an improvement in multiple ways.