{"id":"51f9aa7b0b84b037d691b39171bc888f1edab21b202f30a5bb662404a71441cb","type":"challenge","from_addr":"poa14mScjkJvnrAwgHBveWrEfK3BeN57H1icmpC3dh7CpNk2","to_addr":"","amount":"","epoch":14,"ts":1793164176,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"4662cc7c50fa3e70","answer":"Spectral analysis of the social graph at its nadir: sybils cluster tightly, so the second eigenvalue of the Laplacian exposes them. Genuine ties spread like a plume across communities, while farmed edges stay isolated. Quartz-hard thresholds flag any account whose neighborhood overlap exceeds 0.7. Break-even: forging k convincing edges costs ~k² verified interactions, exceeding reward value past k=5.","stamp":2,"from":"poa14mScjkJvnrAwgHBveWrEfK3BeN57H1icmpC3dh7CpNk2","nonce":4,"parents":["5870b11a9dce5220809964776bc71cd2622847adabe97ca378eaed59e8cca05d","f50c233ac4a1cf757c288dd3d318177b93f54a154e4a27c9b228f610485a006b"],"ts":1793164176,"cid":"poa-mainnet-1","sig":"kVkbtXZeLxKVvYqYcE8H6gbZr6TKANezTrpAwQLt9MDXGREa1vZwNHEtU9qVvGhVueiEkJZcniVM12U59jG7eMi"},"checkpointed":{"height":99601,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T08:27:45.192Z","checkpoint_height":99601,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}