Enhancing L2 Security with Sequencer-Level Protection
summary
Zircuit implemented sequencer-level protection that risk-assesses transactions via an AI-based oracle placed between Geth’s tx pool queues, marking suspicious ones with a quarantine status invisible to L1. It scans RPC and OP-stack deposit flows at 2s block cadence, runs offloaded scoring to avoid sequencer halts, and uses a testing suite with bytecode variance and reproduced contract states. Mainnet testing analyzes 400,000 transactions with zero false positives so far.
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