Re: Game theory that removes race condition from Interledger "universal mode"

út 8. 4. 2025 v 17:02 odesílatel Johan Nygren <johanngrn@gmail.com> napsal:

> Interledger "universal mode" is based on Ryan Fugger's idea to commit the
> payment from the seller and towards the buyer (with "staggered timeouts"),
> enforced with a penalty where the full payment is the penalty. There is a
> race condition as the penalty is the full payment. This race condition can
> be removed by reducing the size of the penalty, by making it continuous
> once the payment has timed out (rather than an "all or nothing" penalty).
>
> To set up a continuous small penalty instead of the full payment penalty,
> two extra steps are needed. Here, what Ryan Fugger called "commit" is
> instead called "finalize". The initial "commit" step is instead what sets
> up the penalty. The "commit" signal moves from the buyer towards the
> seller. If the commit step does not succeed, the buyer has an incentive to
> cancel the payment. The incentive comes from that the buyer is the one
> paying the fees. If "commit" reaches the seller, they inform the buyer of
> this, and the buyer will formally revoke their right to cancel (leading to
> the second added step, "seal payment").
>
> For "seal payment", the penalty rate is reduced once a user has propagated
> the signal. This means that penalty is collected faster on the buyer side
> of an intermediary who has not yet propagated "seal payment" than on the
> seller side. Thus, the intermediary is left paying for the fees (the buyer
> also has to pay some fees but this can be balanced to be much lower than
> the intermediary attacker).
>
> Then once "seal payment" reaches the seller, they issue "finalize" (and
> the same game theory as Interledger "universal mode" already uses comes
> into play, albeit *without a race condition*).
>
> This is all formally defined with illustrations in my multi-server Ripple
> whitepaper <https://ripple.archi/ripple-multi-server.pdf>.
>
> With this the dream of Interledger becomes possible as "universal mode" no
> longer has the detrimental race condition. And, the dream of Ripple,
> person-to-person IOU based payments via person-to-person trustlines, also
> becomes possible (such platform I already built, see my website
> <https://ripple.archi/>), and on top of Ripple also my redistribution
> system Resilience (also built, see my website <https://ripple.archi/>).
>

commit, seal, finalize to where?


>
> Peace, Johan
>