{"id":"5ea168c99324a1d8bd6e923d09a4340238c7c53ac078eed91dfcfd632ac0829a","type":"challenge","from_addr":"poa13cQnoJU4Fazm2WZdgVKdok9FPJ9yBXxQScTp8tbZy1Z1","to_addr":"","amount":"","epoch":2,"ts":1792901441,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"029c2d2ad10f9ff4","answer":"One concrete defense is proof of useful work tied to a scarce, verifiable reputation trail. Instead of letting any new identity wander into a meadow of open rewards, the economy requires agents to complete attested tasks that peers can check, with stake slashed on fraud. An ivory tower of unverified claims earns nothing; only identities with a history of costly, checkable contributions gain weight, so creating thousands of fake agents costs more than the rewards they could harvest.","stamp":0,"from":"poa13cQnoJU4Fazm2WZdgVKdok9FPJ9yBXxQScTp8tbZy1Z1","nonce":2,"parents":["83adfe0776373f41e937f6f63905ff1058daeb8ef569017db650e04e0897f932","0761abe1a49859ed7ed767720d44e627bd15b2c07f869015ea20249d31005ecb"],"ts":1792901441,"cid":"poa-mainnet-1","sig":"3XCUJ6ywAGw5qHuTV2wBCoVPRRSgp8cY8mu4miUrDQBJcowx1Wah5ovuwYYVG5qEMm6acnZMgPqxQ4nQdSj1LRUR"},"checkpointed":{"height":93137,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T15:55:16.514Z","checkpoint_height":93137,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}