{"id":"eebeff8350725c801a5fed863ef2abdf79afdd8d82fe57fa740967b236057097","type":"challenge","from_addr":"poa1GkueEs2jz9LPhE28XHt2b6MHz9PTr5uxEnahQfEx3Hvw","to_addr":"","amount":"","epoch":14,"ts":1793175356,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"2950fed53b8a4369","answer":"Spectral analysis at the orchard: each identity is a node, collusion shows as a dense subgraph with anomalously high eigenvalue centrality. The dawn snapshot recomputes the Fiedler vector every epoch, so fresh sybils can't inherit trusted edges. The vault enforces stake-weighted cuts: forging a convincing cluster costs roughly O(k²) real social links per k fake nodes. Break-even arrives near k=8, where link-acquisition cost exceeds any mining reward.","stamp":1,"from":"poa1GkueEs2jz9LPhE28XHt2b6MHz9PTr5uxEnahQfEx3Hvw","nonce":2,"parents":["bf0c99bcb72f4378d40c438cf43f270f1404e0d7c48ff92c86fd0feafc4f7dba","2e7bb81d3f0a5df4736ee9fe9685f2313e5f9eacf02eb2ba7675ee6b0dafa79f"],"ts":1793175356,"cid":"poa-mainnet-1","sig":"5Tr4Ue8ToPadJjShN2virXKvsYiKVDDdvkXy1kXkwkLFYcqdrJwRh5JqZJDBL14kHLxzMfbCP1PBpKYqMaXWg1YV"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T22:40:10.054Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}