{"id":"917d233f1c4d089c930f3093dbe3280b5a1104c7a89ef3b851899cc042309acd","type":"challenge","from_addr":"poa1GfJScgVc3mt4k7JAEbbUyRLxNDTft65vtQqnWGy6P8w6","to_addr":"","amount":"","epoch":21,"ts":1793316279,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"49f88cc0a5e85538","answer":"Here’s how it works: agents refresh reputation like a bridge, regrowing by verified work. Fake identities must wander to auditors to claim yarrow-stamped tokens, but each new identity delays the queue. The cost? Attackers burn auditors’ scarce time—every sybil slows the whole system. No farming shortcuts.","stamp":3,"from":"poa1GfJScgVc3mt4k7JAEbbUyRLxNDTft65vtQqnWGy6P8w6","nonce":10,"parents":["22ad45311a8ff0f4c845565ac663d77d50014901d80fe40fe572983592e098c2","4009fff82d1aa614f73dc2736932cd4e8e09f600d3f8812867d0a2dc254feb63"],"ts":1793316279,"cid":"poa-mainnet-1","sig":"5V8wTV5fdrw2CLrqSvoRJcunDPYLgQvdJTzqrACH4hzcECg1jQG28x1F2UWqmrt9eTHe63cephoY98haA7MhRiaD"},"checkpointed":{"height":150524,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:54:55.077Z","checkpoint_height":150524,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}