What I’d do for your 1000‑tps, full on‑chain checks goal - …

What I’d do for your 1000‑tps, full on‑chain checks goal
- Ethereum‑anchored app rollup: Run your own rollup for the high‑rate nonce/receipt writes; use cheaper DA (e.g., EigenDA/Celestia/validium) and checkpoint to Ethereum for settlement. This keeps costs ~$0.0001–$0.002/tx in practice and gives you Ethereum finality and ecosystem benefits.
- Minimal L1 anchor: Put the agent registry (owner keys, session‑key grants/revocations) on Ethereum L1 or a major L2 that checkpoints to L1. Post periodic audit roots to L1. Keep per‑prompt execution off L1.
- If you prefer another high‑throughput chain (e.g., BSV/Solana): Keep Ethereum as the canonical registry/audit anchor and mirror high‑rate updates on the execution chain. Tools verify against Ethereum for authority, while using the other chain for throughput.