William Allen pfp
William Allen
@williamallen.eth
genuine q: any tips on where I can read the best explanation for why user's shouldn't be concerned about the lack of fraud proofs on optimism? cc
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William Allen pfp
William Allen
@williamallen.eth
yes, I'm no expert here but that is the part that is currently disabled. https://community.optimism.io/docs/protocol/#next-gen-fault-proofs
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Drew Fisher pfp
Drew Fisher
@drewf.eth
Has nothing to do with the sequencer. It just means that anything the proposer says, goes. With arbitrum (until BOLD launches very soon) only a permissioned set of challengers are allowed. Robust, permissionless fault proofs and slow upgrades are essential, otherwise you just trust the rollup devs with all your funds.
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Drew Fisher pfp
Drew Fisher
@drewf.eth
Definitely can be overcome. BOLD is a big milestone, but it’s unfair for Arbitrum to dunk on Optimism until they actually have BOLD in place, especially if they’d rather dunk than share their research. The Optimism collective’s highest priority is getting fault proofs live, and they’re making strong progress.
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Drew Fisher pfp
Drew Fisher
@drewf.eth
They can propose any state output they want. It doesn’t need to be valid. I can be “0x… has all of the ETH (and other assets) deposited on the bridge”. They have to wait 7 days after the proposed invalid state transition to take the money on L1, but nobody else can do anything but watch and wait.
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Drew Fisher pfp
Drew Fisher
@drewf.eth
Until Arbitrum launches BOLD, the only recourse anyone has is that Arbitrum’s hand-picked challengers can step in. While “arbitrum has fraud proofs” is true, it really doesn’t mean much until they’re permissionless. With either, the security council can steal everything and disable fault proofs via upgrade.
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Cocoraeth
@cocoraeth
To counter, the validator set has been diverse since last year, bear in mind only 1 honest validator is required in the optimistic case. The chances of the validators not stepping in are basically zero as it's made up of the Ethereum Foundation, L2Beat and 7 other independent teams. But BOLD fixes this soon anyway.
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