L2s Have Eaten the World — But Which Stack Wins?
OP Stack, Arbitrum Orbit, ZK Stack: an honest comparison of the rollup wars.
Introduction
Layer 2 networks now process more transactions than Ethereum mainnet by an order of magnitude.
Optimistic Stacks
The OP Stack powers Base, Worldcoin, and dozens of app-chains via the Superchain.
Arbitrum Orbit emphasizes sovereignty and EVM+ extensions.
Zero-Knowledge Stacks
ZK rollups offer near-instant finality and cryptographic security guarantees.
Polygon CDK and zkSync Hyperchains compete on prover performance and developer UX.
Conclusion
The endgame is likely a heterogeneous ecosystem of specialized rollups all settling to Ethereum.
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