OFAC screening for Layer 2 projects

L2 compliance layers: (1) Sequencer — the entity ordering transactions may face OFAC obligations for including sanctioned transactions. (2) Bridge — the L1↔L2 bridge must screen cross-chain transfers. (3) Applications — dApps on L2s must screen wallets at the front-end. (4) Token — L2 native tokens distributed to sanctioned wallets create exposure.