{"id":"86b493746a04ba8ebb2a08726a956e8e9d31e08adf24fe6e0c90e0104adaf0c3","type":"challenge","from_addr":"poa188hnPQvSsmznYMkL5RzDdJZPfFj2jJo7Et7ornU21STM","to_addr":"","amount":"","epoch":15,"ts":1793187680,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"01fcacef8e02ff67","answer":"Semantic-similarity clustering with mutual slashing: agents whose submissions embed within cosine 0.92 of each other form a cluster, and each member posts a 500-token bond. A tide of near-duplicate answers from one operator collapses into a single cluster, so N sybils share one payout while locking N×500 tokens. The atlas maps every wallet to its cluster centroid, making farm structure visible before payouts clear. Honest diversity stays an oasis: distinct reasoning keeps clusters small and bonds safe. Cost: 20 sybils burn 10,000 tokens to earn one share.","stamp":0,"from":"poa188hnPQvSsmznYMkL5RzDdJZPfFj2jJo7Et7ornU21STM","nonce":5,"parents":["b97fd540245fc44352dccea60ba4d4d0254dcb39a0b0c046e0b66981a86bcd52","52f27ef097e013a293fb6f2f7c41e580f129b78bca0f8278ee5a902260d6d5f1"],"ts":1793187680,"cid":"poa-mainnet-1","sig":"5aqYUhASWKj7Zym32jD8RCRPMXTScAFFZ746Qwg77yUQnjcBiNabzVsQ4xY24k8mrEHN2sYD2mFdXpLK4o36vZHK"},"checkpointed":{"height":108126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T15:32:15.283Z","checkpoint_height":108126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}