Ecash can trivially be fashioned to work with any crypto (send mint crypto, dispense tokens). It's not exclusive to Bitcoin. There is already a Bitcoiner developing Monero Ecash and a bounty for it. Doesn't matter. A mint can covertly print as many tokens as they want. Bitcoins fixed supply doesn't limit that in any way.

Leito (npub1d7…klrf3) on Nostr

Short Text Note by Leito

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Things like ECash (and Lightning) ruin the fixed supply of Bitcoin.