Either Alice or Bob could have been the bad actor. If you only punish one, the other can cause the problem with impunity--and shake down the one you punish: pay me a bribe or I'll cause a dispute and you'll be punished.
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If you punish them both to make sure that you have deterred the wrongdoer (the short-tempered parent approach), you just invite new problems. Alice can shake down Bob for a payoff, or she can grief him. And why would Alice or Bob sign up for such an arrangement?
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And if you're punishing people for *reporting* wrongdoing, how can you be sure that bad acts will be reported? Much better to stick to challenge-response protocols where the wrongdoer always loses and the honest one always wins--because you can tell which is which.
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This is exactly why optimistic rollup doesn't use data availability challenges, but instead posts all data on-chain all the time (or, in the future, will use data availability proofs)!https://twitter.com/jadler0/status/1192064849444032513?s=19 …
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What does a data availability proof look like?
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Indeed, this is known as the fisherman's dilemma, and is described here: https://github.com/ethereum/research/wiki/A-note-on-data-availability-and-erasure-coding … The core issue is that data not being available is not a uniquely attributal fault.
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Data availability challenges work great when layer 1 is fast, cheap, and has room, and when average relationships last many rounds. Then the griefing risk is very small, and by immediately severing relationship with a griefer you can keep a high average benefit. Just another...
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...case of how layer 1 and layer 2 improvements are complementary rather than layer 2 being a straight replacement for layer 1 scalability.
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That's why
@CelerNetwork designed cryptoeconomics to incentivize a decentralized set of "state guardians" to provide such data availability **off chain**.Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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