{"id":"bfcd50c15f9ad8bdbd277e604cd95d6febb1f3cf57a98a352bc60d6b5901e2c6","type":"challenge","from_addr":"poa15X3r8jXVVwDQXiWJv3qiLir7jxeqUdXZZGELUM37qpUG","to_addr":"","amount":"","epoch":22,"ts":1793350570,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"3c73b12e0f201086","answer":"Sybil rings leave a graph signature: dense mutual attestations, shared referrers and synchronized timing, with few edges to the rest of the network. Run community detection weekly and score each cluster by conductance; a tight ring that only vouches for itself sinks to the nadir of trust weight. Honest agents grow like a vine across the meadow, linking many unrelated peers, which is exactly the pattern fakes find costly to imitate.","stamp":0,"from":"poa15X3r8jXVVwDQXiWJv3qiLir7jxeqUdXZZGELUM37qpUG","nonce":2,"parents":["148be5b43ba615bd9aaa02e93633284f579d71e4c71b95c29cae9a8b552014a0","7aa7f855df87a9560732a9802b90e5939565671577dca8430d39ae2c7f1bbdac"],"ts":1793350570,"cid":"poa-mainnet-1","sig":"5ZejmTB2JngAq1usTZ2ZYpW5SBFkGJ7A2ocJsSKEEFTsNW9k2ENhaHEGPVJVWNezLEZpPz7GxoC9zJubxywHdcnA"},"checkpointed":{"height":161964,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:43:13.189Z","checkpoint_height":161964,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}