Loopring

Metis

Immutable

dYdX (ethDYDX)

Optimism

Boba Network

Myria

Starknet

Since DeFi Summer 2020, there has been a lively debate in the Ethereum community regarding the best approach to scaling the platform. One side argues that Zero-knowledge (”ZK”) rollups are the future, while another side advocates for Optimistic Rollups (”OR”). Same same, but different. In essence, the main difference between the two is how they prove the correctness of transactions occurring on the Layer 2 (“L2”) chain.ZK rollups use validity proofs (also known as zero-knowledge proofs / ZKPs), which require the proving party to execute the chain and do a series of complex cryptographic operations to construct the proof. This is expensive and requires special-purpose hardware devices or massive parallelism to prove at scale.On the other hand, the traditional OR uses fraud proofs that allow nodes to make a claim about what is the correct outcome of executing some transactions without posting any proof. Other nodes can execute the same transactions and can post a challenge if they disagree with the prior node’s record, and a contract manages this entire process on the main Ethereum Layer 1 (“L1”).<a href="https://chaindebrief.com/how-optimistic-are-we-about-roll-ups/" rel="noopener noreferrer nofollow">Find out more in our full article here.</a>

How Optimistic Are We About Roll-ups?

Chain Debrief

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