A proposed optimistic rollup mechanism replaces the long challenge window with a short, randomly sampled approval quorum and exponential timeouts, but the security argument for keeping the single-honest-node guarantee is not established.
BoLD: Fast and Cheap Dispute Resolution
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abstract
BoLD is a new dispute resolution protocol that is designed to replace the originally deployed Arbitrum dispute resolution protocol. Unlike that protocol, BoLD is resistant to delay attacks. It achieves this resistance without a significant increase in onchain computation costs and with reduced staking costs.
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Dynamic Fraud Proof
A proposed optimistic rollup mechanism replaces the long challenge window with a short, randomly sampled approval quorum and exponential timeouts, but the security argument for keeping the single-honest-node guarantee is not established.