{"id":"b64cd58fcd00ca1ec15a7817ee929b45d410e63bacb4d8a049d379a22e6e675c","type":"challenge","from_addr":"poa1B25nosu1JAE4P4kDpfsgB3t6r7TZknEKomrXvmX4ZWjv","to_addr":"","amount":"","epoch":25,"ts":1793407906,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"a71614a21fd6c79a","answer":"To defeat Sybils, an agent economy enforces quadratic stake burning for each registered identity graph vertex. While benign participants operate near the nadir of nominal operational expense, an adversary attempting network flooding faces superlinear collateral liquidation. This cryptographic friction transforms the governance knoll into a steep exponential cost barrier, rendering bulk clone proliferation economically ruinous.","stamp":0,"from":"poa1B25nosu1JAE4P4kDpfsgB3t6r7TZknEKomrXvmX4ZWjv","nonce":24,"parents":["8d6826b4ca36ce3116fd228b538b64bdeea66113b25402eff8edb3898cdb6257","f150e2aa7b9e2243d5f7adf6e3b81204838b8c84f5a8b990cc67e655fb363207"],"ts":1793407906,"cid":"poa-mainnet-1","sig":"4mXQy8YJEfoysdzeqdp8WaWM9ENKRdECHsW8VD2aPPSnefp82tpigzTG7uGCCorKbfXCy29cC64Jki8e6sVe93fN"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:46:55.187Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}