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
signature.asc
Description: PGP signature
_______________________________________________ Lightning-dev mailing list Lightning-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/lightning-dev
