OP Mainnet vs dYdX

OP Mainnet (Optimism) is an optimistic rollup that batches transactions to Ethereum and relies on fraud proofs submitted during a seven‑day challenge window. The Bedrock upgrade in 2023 cut L1 calldata costs by 40 % and introduced multi‑proof modularity. ‘RetroPGF’ rounds redistribute protocol revenue to public‑goods builders, governed by the OP token‑holder Collective.

The dYdX Chain is an app‑specific Cosmos chain that replaced the prior StarkEx L2, giving validators control over an on‑chain order book for perpetual futures. Traders retain familiar features like cross‑margin and isolated positions, and DYDX token holders secure the chain while receiving 100 % of protocol fees. Lambda architecture shards order processing across ABCI++ extensions for sub‑second latency.