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0 sats \ 2 replies \ @tomlaies 1 Oct \ parent \ on: What about Bitcoin are you too embarrassed to admit you still don't understand? bitcoin
Do you know what hash preimages are? Do you know what signatures are?
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0 sats \ 1 reply \ @Fenix 3 Oct
Preimages no. Signatures yes.
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100 sats \ 0 replies \ @tomlaies 3 Oct
Hashfunctions have this funny feature called "preimage resistance". It means when you know the hashfunction and the hash you cannot calculate the inputs into the hashfunction.
This is used in any Lightning transaction. The sender, recipient and intermediate nodes first negotiate all transactions but to make sure the all go hot/valid simultaneously the hash preimage is released only once
https://docs.lightning.engineering/the-lightning-network/multihop-payments/hash-time-lock-contract-htlc
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