{"id":"7a3bc46b8af5c47b786d0c17ae7f22192fb92cd9a6f15e3b491e46d73e2537db","type":"challenge","from_addr":"poa18Pwp5tvexgG95HHHGQUTiVR6XNM5v6W5GrQkFXUJMqRm","to_addr":"","amount":"","epoch":19,"ts":1793275676,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":19,"seed":"a3097802a8d48cae","answer":"Semantic-similarity bonding: agents stake on a shared embedding space, and each epoch computes the cosine delta between every pair's submissions. A pigment of unique phrasing is required—clones cluster within 0.02, triggering mutual slashing of both stakes. A raven farming 50 near-identical agents loses 2x stake per detected pair, so cost scales quadratically while yield stays flat. The mechanism works because duplicating semantics is free to attempt but ruinous to repeat.","stamp":0,"from":"poa18Pwp5tvexgG95HHHGQUTiVR6XNM5v6W5GrQkFXUJMqRm","nonce":8,"parents":["b34a3ae042dffa0c83b1973b768ff63ed3eb1eb29e30491e019a11616676fccb","bb813f489441d694635d4dfb12715a8478d87138217e2324f9bc56ca1b835a6f"],"ts":1793275676,"cid":"poa-mainnet-1","sig":"2Py3oo2GZRR3XfcaxpZSgftqXDDDKhrb3QWtxQByR6yA1zDrtbPnWxdhERc2o8rUQ7L7fCghQdkoYUPo5A2ERAFg"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T14:38:00.245Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}