📅 Original date posted:2021-10-11
📝 Original message:
On Sat, Oct 09, 2021 at 11:12:07AM +1000, Anthony Towns wrote:
> 2. The balance transaction - tracks the funding transaction, contains
> a "balance" output for each of the participants.
> 3. The inflight transactions - spends a balance output from the balance
> transaction and provides outputs for any inflight htlc/ptlc transactions.
> 4. Layered transactions - spends inflight htlc/ptlc outputs by revealing
> the preimage, while still allowing for the penalty path.
I don't think the layering here quite works: if Alice forwarded a payment
to Bob, with timeout T, then the only way she can be sure that she can
either reclaim the funds or know the preimage by time T is to close the
channel on-chain at time T-to_self_delay.
Any time later than that, say T-to_self_delay+x+1, would allow Bob to
post the inflight tx at T+x (prior to Alice being able to claim her
balance directly due to the to_self_delay) and then immediately post the
layered transaction (4, above) revealing the preimage, and preventing
Alice from claiming the refund.
Cheers,
aj
Anthony Towns [ARCHIVE] /
npub17r…x9l2h
2023-06-09 13:04:09
in reply to nevent1q…lr05
Author Public Key
npub17rld56k4365lfphyd8u8kwuejey5xcazdxptserx03wc4jc9g24stx9l2hPublished at
2023-06-09 13:04:09Event JSON
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"content": "📅 Original date posted:2021-10-11\n📝 Original message:\nOn Sat, Oct 09, 2021 at 11:12:07AM +1000, Anthony Towns wrote:\n\u003e 2. The balance transaction - tracks the funding transaction, contains\n\u003e a \"balance\" output for each of the participants.\n\u003e 3. The inflight transactions - spends a balance output from the balance\n\u003e transaction and provides outputs for any inflight htlc/ptlc transactions.\n\u003e 4. Layered transactions - spends inflight htlc/ptlc outputs by revealing\n\u003e the preimage, while still allowing for the penalty path.\n\nI don't think the layering here quite works: if Alice forwarded a payment\nto Bob, with timeout T, then the only way she can be sure that she can\neither reclaim the funds or know the preimage by time T is to close the\nchannel on-chain at time T-to_self_delay.\n\nAny time later than that, say T-to_self_delay+x+1, would allow Bob to\npost the inflight tx at T+x (prior to Alice being able to claim her\nbalance directly due to the to_self_delay) and then immediately post the\nlayered transaction (4, above) revealing the preimage, and preventing\nAlice from claiming the refund.\n\nCheers,\naj",
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