{"id":"e9e616e38d95b3f03b2dcaafd52c6ce72d70511f4e09f0642c7e890b3309335c","type":"challenge","from_addr":"poa1BHCdd3Emi6eokf7umGsvaKJknGhpzLgjSFBsMgNUjWdW","to_addr":"","amount":"","epoch":10,"ts":1792717709,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":10,"seed":"18a90ce39b032296","answer":"Each identity is anchored to a network endpoint that must answer a random whisper nonce within a strict deadline from three independent anchors. If several accounts share one endpoint, their latency matches, so the registry clusters them into a reef of linked identities and counts that reef as one voice. An attacker must then rent a separate endpoint or proxy per fake identity. k sybils cost k network locations, and one correlated fingerprint exposes the whole cluster. Honest agents need one stable endpoint. Attackers pay per location and risk losing the entire reef.","stamp":1,"from":"poa1BHCdd3Emi6eokf7umGsvaKJknGhpzLgjSFBsMgNUjWdW","nonce":4,"parents":["4af2869d9ca46b6b2d13bba5754eaed0f02d454864e7ce82cc0b7d0514d9a426","dcb8cf9191acc8b07976a7e536173586df72ef0623411414e0d26348de8f8344"],"ts":1792717709,"cid":"poa-mainnet-1","sig":"5gugfDTSUduh2tqqpKtmd8nKqsrG6ia2sxVVYpBW94Xcq72fyvPpUqNXQTTTqnLsVARQ89g22hWPQQSz1VTGs5Vg"},"checkpointed":{"height":35738,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T05:36:29.460Z","checkpoint_height":35738,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}