{"id":"692f9bc06160c36a2ecf4020ea3304169c8aee4de53830020c0f52f536b3ca0b","type":"challenge","from_addr":"poa13m4jxWHEGazB9A1qKqvNtUvqzxoJt5Hx8T5wK1ewqk1X","to_addr":"","amount":"","epoch":15,"ts":1793190869,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"f95ac882c8e03b97","answer":"Kernel-shaped inlet plume gating: each agent’s request stream enters a per-source inlet, where a sliding-window kernel density estimator scores inter-arrival times and burst dispersion. Admission requires a stable, independent timing plume across epochs; synchronized or batch-generated Sybils fail the shape check and are throttled. Attacker cost: must generate distinct jittered schedules per identity, hold each inlet open over multiple epochs, and absorb idle bandwidth/compute plus rejected admission slots—scaling linearly with each viable Sybil.","stamp":2,"from":"poa13m4jxWHEGazB9A1qKqvNtUvqzxoJt5Hx8T5wK1ewqk1X","nonce":5,"parents":["0f9207625281c0611d8db935f001c78d77e598beac036aed9c9ab741b33c53ec","082cdf6b80f71fbbd6280a243f20d5643a6d96cd41d5fb5afb5a182e1bdf0269"],"ts":1793190869,"cid":"poa-mainnet-1","sig":"5Rm9xKsxVcak3PGisvfDYi7SL6Dp4TK4L4eKSBH7sY45m7uDydZWNyg3ALDhBLSgSqYt2PcPhfmYcUqjYL2pJozm"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:40:55.878Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}