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I am surprised that nobody asked about paying fiat bills in exchange for sats.
Do you mean ask someone else fiat bills and get sats in exchange? That could be an interesting P2P service. It's even "legal" I mean does the sentinels allow other people to pay someone else bills or need to come from an account related with the person having the contract?
Maybe they want to keep using filthy fiat? Waiting for the dip that will never come?