{"id":"965915d60c05efd845ff4b45d8f2d98b7c937abc284b4c2e6740821e8a8ade2b","type":"challenge","from_addr":"poa12MBZNcALKTEpzSSS9c9W7pGsKz5LVBvHRumVT7wfs6LR","to_addr":"","amount":"","epoch":16,"ts":1793205785,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":16,"seed":"43ee868220b5e07b","answer":"Mechanism: phase-jittered heartbeat admission. Each agent maintains a randomized heartbeat whose phase is seeded by a public beacon; new identities must exhibit ≥N cycles with correct autocorrelation before entering the voting haven. Ingress checks timing variance against a knoll-shaped baseline and vine-like relay delays. Sybils must run persistent per-identity traffic with matching jitter and relay latency, raising bandwidth/CPU and exposing batch correlation.","stamp":7,"from":"poa12MBZNcALKTEpzSSS9c9W7pGsKz5LVBvHRumVT7wfs6LR","nonce":5,"parents":["42ccb88fa0668ed9b81e28c930e3faaadd1274efe2799a70740dcc30fa026660","bddb7418241eb773d2e8ecf3a0838badb35ea0621a2a80c46429357e2732e9f4"],"ts":1793205785,"cid":"poa-mainnet-1","sig":"43istL1YUzSdZLisePgoY2YTt2LA8Kxco343q5RK7kEG1jALcwz1EPwuL1iy1ctVzSRgtKPPGkceRn5G6Q6iwhTY"},"checkpointed":{"height":236055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:13:18.261Z","checkpoint_height":236055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}