📅 Original date posted:2021-10-12
📝 Original message:
On Tue, Oct 12, 2021 at 04:18:37AM +0000, ZmnSCPxj via Lightning-dev wrote:
> > A+P + max(0, B'-B)*0.1 to Alice
> > B-f - max(0, B'-B)*0.1 to Bob
> So, if what you propose is widespread, then a theft attempt is costless:
That's what the "max" part prevents -- if your current balance is B and
you try to claim an old state with B' > B for a profit of B'-B, Alice
will instead take 10% of that value.
(Except maybe all the funds they were trying to steal were in P' rather
than B'; so better might have been "A+P + max(0, min(B'+P'-B)*0.1, B)")
Eltoo would enable costless theft attempts (ignoring fees), particularly
for multiparty channels/factories, of course, so getting the game theory
right in advance of that seems worth the effort anyway.
Cheers,
aj
Anthony Towns [ARCHIVE] /
npub17r…x9l2h
2023-06-09 13:04:09
in reply to nevent1q…r749
Author Public Key
npub17rld56k4365lfphyd8u8kwuejey5xcazdxptserx03wc4jc9g24stx9l2hPublished at
2023-06-09 13:04:09Event JSON
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"content": "📅 Original date posted:2021-10-12\n📝 Original message:\nOn Tue, Oct 12, 2021 at 04:18:37AM +0000, ZmnSCPxj via Lightning-dev wrote:\n\u003e \u003e A+P + max(0, B'-B)*0.1 to Alice\n\u003e \u003e B-f - max(0, B'-B)*0.1 to Bob\n\n\u003e So, if what you propose is widespread, then a theft attempt is costless: \n\nThat's what the \"max\" part prevents -- if your current balance is B and\nyou try to claim an old state with B' \u003e B for a profit of B'-B, Alice\nwill instead take 10% of that value.\n\n(Except maybe all the funds they were trying to steal were in P' rather\nthan B'; so better might have been \"A+P + max(0, min(B'+P'-B)*0.1, B)\")\n\nEltoo would enable costless theft attempts (ignoring fees), particularly\nfor multiparty channels/factories, of course, so getting the game theory\nright in advance of that seems worth the effort anyway.\n\nCheers,\naj",
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