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Barnabé Monnot
@barnabe
Here is a new RIG Open Problem on the specification of a Multiplicity gadget in the context of Ethereum’s Gasper consensus. Good problem for a consensus researcher interested in censorship-resistance! https://efdn.notion.site/ROP-9-Multiplicity-gadgets-for-censorship-resistance-7def9d354f8a4ed5a0722f4eb04ca73b
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pintail
@pintail
What an interesting idea. This is the first time I've read about it. Intuitively it seems as though this only provides censorship resistance if at least 1/3 of nodes are non-censoring, so perhaps not as powerful as inclusion lists for this purpose?
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Barnabé Monnot
@barnabe
Hello Mr Pintail! Yes this is a downside I see, but with the ability to do the conditional tipping logic and potentially rewarding cleverly the committee participating in the gadget, you could expect to turn weakly-censoring behaviour into rational participants who want to censor as little as possible
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pintail
@pintail
I guess the question is whether "weak censorship" really exists. My assumption would be that censoring nodes do so out of a fear of severe legal consequences and so their behaviour would not be altered by small incentives.
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pintail
@pintail
I presume the weightings proposed in the article are based on sound distributed consensus principles, but I do wonder if it would be possible to modify the rule in a way which provides stronger non-censorship guarantees.
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Barnabé Monnot
@barnabe
Might be a bad idea, but you could have a small-ish committee participate in the inclusion set construction, and rotate the set often
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Barnabé Monnot
@barnabe
But agreed that it is a risk and something to figure out during the research
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pintail
@pintail
I wonder if one option would be to identify censoring validators and down-weight them or exclude them from future committees.
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Barnabé Monnot
@barnabe
So if they censor they should be missing out on the conditional tips, which would over time give more economic power to non-censoring validators
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