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OP Mainnet vs Starknet

Which is more decentralized — OP Mainnet or Starknet? A side-by-side on consensus, nodes, clients and governance.

OP MainnetStarknet
GradeC+C
TypeL2 · Optimistic rollupL2 · ZK rollup
Nakamoto / stageStage 1Stage 1
Node / validator setInherits Ethereum securityInherits Ethereum security
Clients / sequencerSingle sequencer (OP Foundation)Single sequencer (StarkWare)
GovernanceOptimism Collective (two houses)Starknet governance (token + council)
Key riskCentralized sequencerCentralized sequencer

OP Mainnet C+

  • L2BEAT Stage 1
  • Concrete shared-sequencing roadmap
  • Superchain network effects
  • Centralized sequencer today
  • Foundation influence

Starknet C

  • Validity proofs (no challenge window)
  • L2BEAT Stage 1
  • Native account abstraction
  • Centralized sequencer & prover
  • Smaller ecosystem than OP/Arbitrum

Bottom line

Stage 1 with the clearest path to decentralized sequencing. Strong cryptographic guarantees; operational decentralization is in progress.