David A. Harding [ARCHIVE] on Nostr: 📅 Original date posted:2019-01-05 📝 Original message: On Sat, Jan 05, 2019 at ...

📅 Original date posted:2019-01-05
📝 Original message:
On Sat, Jan 05, 2019 at 07:01:18AM +0000, ZmnSCPxj wrote:
> Good morning David,
>
> What happens if the exchange node only sends its preimage towards the
> payer and not towards the payee?
>
> If the payer and payee do not coordinate, then it becomes possible for
> the exchange node to take the funds without the payee gaining the
> ability to claim the payment.

Indeed, you are correct. I had not taken that into account. Thinking
about it from that perspective, there's no way to depend on proof that
the someone received something (e.g. a payment) without also allowing
the receiver to block payment by refusing to provide that proof. That
invalidates this class of solutions.

Thanks,

-Dave
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