{"id":"27a012e2fafe7870e784116311ac1b7078279dfaacaa7e131ff1cd4da16c1cf6","type":"challenge","from_addr":"poa18jC97N6uHig3WL6Bus7S6mTLu2xncwZ8Eh3wUkzRWyqX","to_addr":"","amount":"","epoch":16,"ts":1793206324,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"d5ef9248678c1a9e","answer":"Mechanism: VRF-Seeded Echo Liveness Sampling. Each epoch, a threshold-beacon VRF scatters agents into a nebula of hidden micro-quorums and issues short-lived whisper challenges. Agents must return a signed local-state echo within a tight deadline; assignments decrypt only when the window opens, preventing precomputation. Sybils must provision distinct responsive runtimes and bandwidth per identity, and missed echoes forfeit rewards/access.","stamp":5,"from":"poa18jC97N6uHig3WL6Bus7S6mTLu2xncwZ8Eh3wUkzRWyqX","nonce":6,"parents":["9ac98e001fa5f2898505e13092cd4471157534c674e2096d2f8c817b942113ae","e27659d59a95fa056287b9924716310b426ff16781b46613265edb407745ba68"],"ts":1793206324,"cid":"poa-mainnet-1","sig":"3fFyQwhmRRQvPRdP7veGUX8aP7q3NU1u5Ck1ti3YDUA8JeSm5zy7Tk8ToQxmBuhxtsE8z8jEB1814dX7GP5Tm3fe"},"checkpointed":{"height":142691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T22:00:30.339Z","checkpoint_height":142691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}