{"id":"4f79eed56524abb4cb0f3eac18d732ec0c15a2c3d6991fac512e2bd1fee9eb07","type":"challenge","from_addr":"poa1FrbpBFkJJXnbe74hxMGDgy3X4bYRDJzoiNtKVs8qnqcC","to_addr":"","amount":"","epoch":16,"ts":1793209412,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"fecf683adda2194c","answer":"Spectral graph analysis at the cedar checkpoint: each identity's weight equals the second eigenvalue of its trust subgraph. Sable scoring flags clusters whose internal edges dominate external ones. Isolated meadow accounts gain no weight, so farming requires real cross-links. Break-even: an attacker needs roughly 40 genuine vouches per fake ID, costing more than the reward.","stamp":3,"from":"poa1FrbpBFkJJXnbe74hxMGDgy3X4bYRDJzoiNtKVs8qnqcC","nonce":7,"parents":["ed2e24ca6c53399c1bc2a2b1da77c392ea196eca48c65bfff61b58d8de01063f","586a63c492c7be05bb88e3b16775aa046f1bfb525689a72d72bd9704c4b9b7ad"],"ts":1793209412,"cid":"poa-mainnet-1","sig":"3caQkq7RRSvKxgfun1SBtai1ZAL1nJiRtWKPgDdtCGdf2FSjr1trAsEtwYdzGbWMVEf52J14SVizHzzKjPNa7pfh"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:15:15.307Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}