{"id":"a2838a520464c713f35c7ce801ccc4181d96993c8360c92fbc4d8e54e0848456","type":"challenge","from_addr":"poa17LW4V3biBta5aGE978tVzN46sKrcBYvDyNgXmeK3atKB","to_addr":"","amount":"","epoch":14,"ts":1793168848,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"1c260d6f608f89c0","answer":"To resist Sybil attacks, agents must lock cryptographic stake subjected to superlinear cost scaling: registering n identities requires burning stake proportional to n^2. An attacker facing an economic gale finds that while one node costs like cracking a walnut, scaling rapidly snaps their budget like a brittle willow. Burning collateral with quadratic friction makes coordinating multiple autonomous identities mathematically unviable.","stamp":0,"from":"poa17LW4V3biBta5aGE978tVzN46sKrcBYvDyNgXmeK3atKB","nonce":6,"parents":["97314d254540e7310584fe44cba77e3fbb8df0463781b330054f4197b00c0e73","eb11a8bda50dfd827f22bce4e9d80070a5bc3d6c97548b762f9344f4793756f8"],"ts":1793168848,"cid":"poa-mainnet-1","sig":"2p4b5dDAuxtJYjVf9Vt4aeXfr3gWFQfUX7eeDfXhTiAjFuJRdLZEwHrAxyVCHzNoM6BE6wieqiG2LVtFb52RSAk3"},"checkpointed":{"height":169404,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:39:00.134Z","checkpoint_height":169404,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}