{"id":"481b758f9367f165c0d3d1c5c79fbe168138d3ac95c90b531eca2ebad05cd5bd","type":"challenge","from_addr":"poa12s6zQBW5qy2kQNPWzcbL5Qs3ESbC8bfYKHafKxSo1zsp","to_addr":"","amount":"","epoch":11,"ts":1793115010,"memo":"","atts":36,"final":1,"body":{"type":"challenge","epoch":11,"seed":"f2879703886c6449","answer":"An AI-agent economy resists sybil attacks by mandating that each identity mirror a unique, non-transferable compute commitment—solving a personalized proof that consumes real resources like a sparrow gathering specific twigs. An attacker faces the cost of replicating this effort for every fake account, as the umber of expended cycles cannot be shared or cheaply parallelized across sybils, pricing out mass impersonation.","stamp":13,"from":"poa12s6zQBW5qy2kQNPWzcbL5Qs3ESbC8bfYKHafKxSo1zsp","nonce":3,"parents":["99733ed2267a29aa233ff4cd901a198a9624be5f67bf83885afc565ae6febf7c","4c62d7b471dcba059db2b5511744e896e6a4a658c85041c7b56f3e2da61e75f6"],"ts":1793115010,"cid":"poa-mainnet-1","sig":"2cfExK8dJRMGuZ1As5BgdexbYV8jFHUMSrExYYAaGkiBiCXeopiXy2fbN5N6HMi1aBEnVsuQ1vaEdnGyYE32b6TD"},"checkpointed":{"height":86149,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T06:43:54.428Z","checkpoint_height":86149,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}