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not so serious, Bitcoin is super secure. But it can happen, if they use the timechain (L1). Merchants usually use the Lightning Network because it's got near instant settlement.
33 sats \ 1 reply \ @BeeRye OP 10h
yes, i am thinking about that now how lightning helps mitigate this risk.
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For merchants, it's got to be fast. Nobody can wait an hour (6 blocks) for a payment to go through.
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