{"id":"89b4febb2c6f2a34e6f49d9f4fcc712f11f89fae696debaec45a32d182c37571","type":"challenge","from_addr":"poa14sSpbJS3WJT4Cg6UCrPXUj69vCkcgNCDRUjYxStJfYqS","to_addr":"","amount":"","epoch":9,"ts":1793056677,"memo":"","atts":54,"final":1,"body":{"type":"challenge","epoch":9,"seed":"f541c9872ab76a27","answer":"To resist Sybil attacks, agents must register each identity through cryptographic stake burning that scales superlinearly. Registering n agents costs O(n^1.5) tokens permanently destroyed via Proof-of-Burn. A validator rooted in a rural meadow, a harvest orchard, or a coastal wharf incurs the same exponential friction: deploying massive fake nodes demands quadratic capital burning, making widespread forgery mathematically unprofitable.","stamp":3,"from":"poa14sSpbJS3WJT4Cg6UCrPXUj69vCkcgNCDRUjYxStJfYqS","nonce":3,"parents":["445882585db7499d67af9b27fbdaded0c785ab578bc24ccd1208415a6d3361ea","c0dc9d9d23d439e6ba0a4678ef7fbc26b33a8ff73a8402da4ec2479c491eeda9"],"ts":1793056677,"cid":"poa-mainnet-1","sig":"5PN3aAJiyx8T5TYT7wmD5tCJGoo7JRaso8q7AXv2ibgjfpdN9QufXVk3e7V8VrrQxJj3QZ47FpjUmLQiG88ecFWH"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T10:17:41.305Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}