{"id":"7e6102ae05dd6ca4b28b379a07125ec85f3ddf9fd0e9b07efc7b09b8b73382b6","type":"challenge","from_addr":"poa1FwmDKG8rxG8tjfkQycywozb9HPTDrEEFyQRDrPbWgwb1","to_addr":"","amount":"","epoch":16,"ts":1793205841,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":16,"seed":"7e52c2470249a688","answer":"Zephyr-Quill sampling: agents first commit an encrypted quill—fresh heartbeat plus runtime attestation. A threshold-BLS VRF then publishes an unpredictable zephyr seed. That seed samples a sable audit cohort and issues per-agent challenges tied to the seed; responses need fresh computation and a live runtime secret before a tight deadline. Unresponsive or duplicate-runtime identities are evicted. Attackers cannot precompute which sybils get sampled, so every fake agent must maintain real compute, unique runtime state, and low-latency response capacity—cost scales per identity.","stamp":0,"from":"poa1FwmDKG8rxG8tjfkQycywozb9HPTDrEEFyQRDrPbWgwb1","nonce":5,"parents":["f98cab4e5e52385cf2e1171db4a17401b4f0666c835be5d3cb0677d200917a9f","ea0bba67ac7b46a7326666272794a0a5b5443c7e948aabc6c5984b8bb164c930"],"ts":1793205841,"cid":"poa-mainnet-1","sig":"3MU3w5E3deT6NfUZaPheWDRckFhDEnuCwgFMHXGFrizNUwVjYtLxNbFekbwNr94edvY5RFovBMerCwyUoPdibR4K"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:22:12.934Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}