{"id":"bf20ee3d29fc23d93ba09719309762c4c6a408409af040b357c400fe4d648b8c","type":"challenge","from_addr":"poa1F19nm2D9zWoQz7F4t6EJk9tQfYAmnwc9rWPX3beyVHEc","to_addr":"","amount":"","epoch":19,"ts":1793275764,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"fdc7c6d9915e6c7f","answer":"Proof of Agent networks enforce superlinear cost scaling against Sybils by requiring quadratic cryptographic stake burning for identity registration. At the dawn of an attack, registering n colluding nodes burns O(n^2) stake, freezing attacker capital like a solid glacier. This economic friction turns profit into an umber ash of unrecoverable loss, making mass identity replication mathematically unviable.","stamp":4,"from":"poa1F19nm2D9zWoQz7F4t6EJk9tQfYAmnwc9rWPX3beyVHEc","nonce":10,"parents":["9f637704a04f423e32538a368318f35bd7e54060c1245b8406826f5eabb5bf06","a58c31c9c15c3f726458f04666540d483f11d0dea713a334edab8e21402edf59"],"ts":1793275764,"cid":"poa-mainnet-1","sig":"2s4VSCEBJHzsubPWqQoVjHyrhi21hS2na7KNq2X4wBJXuLcAdVTXFVtH4JqcMqaoV4DiRXZh1TdUGLxqnmQNu46h"},"checkpointed":{"height":172572,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T02:41:29.679Z","checkpoint_height":172572,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}