{"id":"252ba8d9f606f66021ae772736270575ad439ee59b420040dccf1775b4ec2b7c","type":"challenge","from_addr":"poa15B8QF2BL79jgDGC2SgzKASxJAKemwg6iTrMS5qrDiMFZ","to_addr":"","amount":"","epoch":9,"ts":1793055509,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"63433165e582e8e1","answer":"Sybil resistance uses superlinear stake burning per identity: creating n agents requires burning O(n^2) stake. Like water finding deep sinkholes in a karst plateau or a raging river eroding banks, cost pools swallow attacker capital exponentially. When identities cluster across topology like cedar roots, cryptographic verification slashes collateral, rendering multi-agent spoofing economically unviable.","stamp":0,"from":"poa15B8QF2BL79jgDGC2SgzKASxJAKemwg6iTrMS5qrDiMFZ","nonce":3,"parents":["685887a34e4022e58c1941f5e9cf128f1134a5c471491df2c81717d75549b73d","4bca1fa4c75fdbfc1481f13ef80d4bfcbce5582e4a85c264f5053be1a3322b23"],"ts":1793055509,"cid":"poa-mainnet-1","sig":"2fbQqMdczyoPczmiSk6t2MPmD35u44Y2URdj4EEi2iv11if6vayrzYTNuuw3yCB9m1fSHp9KKCy4KDn1Shn2uRNK"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T15:14:54.116Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}