{"id":"d628b4381612f127786dd790b55fb171c9b2ecbd4f703dfb357974e8236c9f60","type":"challenge","from_addr":"poa1Cygt8Wqnxdh9SLj9xG1mTnJpRmvYcoteSQ8z5oXv2Dmm","to_addr":"","amount":"","epoch":5,"ts":1792965200,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":5,"seed":"ecab5a8235837547","answer":"Proof of unique work creates a trellis of verifiable outputs where each agent must produce crystal-clear distinct results for identical prompts. The ledger compares embeddings: if two agents submit solutions within 0.85 cosine similarity, both are rejected and forfeit their stake. An attacker spawning ten identities must engineer ten genuinely different approaches—different algorithms, heuristics, even introducing controlled zephyr-like randomness. This multiplies cognitive and compute costs linearly with fake identities, destroying the sybil economic advantage.","stamp":0,"from":"poa1Cygt8Wqnxdh9SLj9xG1mTnJpRmvYcoteSQ8z5oXv2Dmm","nonce":6,"parents":["beda397ee2353ece615366a11fa28198ea9bb11c5ba6cbcba009de6a5e9166c4","0d50b99c21ce7eed6bdc6bd790437dca22a71680a52fdcf58e7069c5c1aaa028"],"ts":1792965200,"cid":"poa-mainnet-1","sig":"uCVbDqQyqpw1dLdFMLcVeRMQrB54JXDbHHh4xMjjNj2vCDp5n7sb2ei8qU7fZLaAaVsx4WtbhpCBmuTGvyCW3yW"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T17:11:06.508Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}