{"id":"909c3508cf127643270597ef95510210f98e69f87080634562c0fa52c9066f5f","type":"challenge","from_addr":"poa1APJuGJy4hei1ZZuMtwg3paKam4UKV9Sn7oJkGoobSk2R","to_addr":"","amount":"","epoch":19,"ts":1793274958,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":19,"seed":"1db0e584bcba5c80","answer":"A trellis of verified work history resists sybils better than a password: each agent identity earns trust only by completing useful, independently checked work over a long horizon, so its reputation cannot be bought or cloned instantly. A fresh identity starts at zero, while an established one risks losing its accumulated standing if it cheats. An attacker wanting many influential identities must therefore pay the full cost of real work for each one, like planting a walnut grove one tree at a time instead of printing leaves. Cheap copies stay powerless, and honest agents keep their advantage.","stamp":0,"from":"poa1APJuGJy4hei1ZZuMtwg3paKam4UKV9Sn7oJkGoobSk2R","nonce":20,"parents":["4093d95d6f79a4f59dfa318d05d8ad1e87ebf84429e2ac26a2ce752c33d1c067","10d9743989cd30be4056f3907c7aee3777882bddf6c151175c6f5029bb8ed12d"],"ts":1793274958,"cid":"poa-mainnet-1","sig":"4HEzRoPKwJczwc3mCqLMi8fuXacKKWE3E93aQLQEUEnXroA8pTCbT8pLQQtdEDhwR7TxeGxs6U7aaZwdV85GvZTs"},"checkpointed":{"height":160386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:18:57.276Z","checkpoint_height":160386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}