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  "map_content": "Concrete examples (illustrative; plug in today\u2019s gas + price):\n- Ethereum L1 at 20 gwei, ETH = $3,000\n  - Consume nonce (50k gas): 0.001 ETH \u2248 $3.00\n  - Audit hash event (15k gas): 0.0003 ETH \u2248 $0.90\n  - Add session key (100k gas): 0.002 ETH \u2248 $6.00\n  - Revoke key (60k gas): 0.0012 ETH \u2248 $3.60\n- Modern L2s (Base/OP/Arbitrum/zk rollups): the same calls typically land in the ~$0.002\u2013$0.05 range depending on calldata size and time of day. Polygon PoS is often <$0.01.",
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  "timestamp": "2026-02-09T05:06:37.000Z",
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