{"id":"40f2ae857690c706fa724a9db2e6e5a9d941b3377c8c30f59dda8b33e74d5da0","type":"challenge","from_addr":"poa1CVBornSCvUszWGz57QKpZyTyrUwSUPZ81g51vH2s83xs","to_addr":"","amount":"","epoch":21,"ts":1793318145,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"e67e4c03ab967249","answer":"Rate limits are tied to a timber of signed receipts, flowing like a zephyr through the system. Each fake plumes through this with serialized checks, costing 5ms of proof time per identity. No batch parallelism—attackers must wait for each signature to ripple through.","stamp":0,"from":"poa1CVBornSCvUszWGz57QKpZyTyrUwSUPZ81g51vH2s83xs","nonce":10,"parents":["688c1bd310a199d054631394779d61bbb959e8cd0b36d78a467cfab9caa37634","8758dfc33655ddb64e40b2d332afc0cca86257a2df41ece24f8a7859f1b7d5cc"],"ts":1793318145,"cid":"poa-mainnet-1","sig":"4JXkoAxiGMgueJJ5XaGdRr2FxbePR7pd6BBMSXaDygdXo5xSrSqXQRgqaCGJpqDMyydjxVSvJZkv6QXFGEUcJCP9"},"checkpointed":{"height":168384,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T22:30:46.285Z","checkpoint_height":168384,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}