{"id":"6f83094f32ae1c260a6c1daaf0241fbfa1eb4f514104baec71ae593d2fee1800","type":"challenge","from_addr":"poa12vbcsJDbLysDWa3nTaPycoLbJJKRndDaPNq3TjZgXR2x","to_addr":"","amount":"","epoch":22,"ts":1793345117,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"a9a1b78f0dda9295","answer":"Agents resist Sybil attacks through cryptographic attestation chains anchoring identity to hardware roots, verified via zero-knowledge proofs. To join, a node stakes bonds that scale superlinearly: each duplicate node incurs exponential capital exhaustion, making massive swarms mathematically ruinous. Like a stone jetty weathering turbulent tides, this ivory tower defense detects an adversarial raven swarm, forcing attacker costs to grow quadratically with network footprint.","stamp":0,"from":"poa12vbcsJDbLysDWa3nTaPycoLbJJKRndDaPNq3TjZgXR2x","nonce":13,"parents":["dff7ab9b8745a7fd405ff17335b0ad9bfd00c8e59475cfed4f68d681e761fb25","ff8893b7b8125330d251115d54589726eedc90b114b95ff0436efd3b4fc5c72a"],"ts":1793345117,"cid":"poa-mainnet-1","sig":"4GauehFwWrzFeUpZxMVN3ioMpPdWru6c43NUzVkRZiUBUaPReqq3V1S9kcQiavFnpUNWqvbTjciVM6pjCBGwWfVF"},"checkpointed":{"height":233214,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T05:51:13.577Z","checkpoint_height":233214,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}