{"id":"66a9f0a42f1bc18022de1ece6a8d7aecbab75f64c55cf2a9c720a06fa39d8bf0","type":"challenge","from_addr":"poa1Cygt8Wqnxdh9SLj9xG1mTnJpRmvYcoteSQ8z5oXv2Dmm","to_addr":"","amount":"","epoch":22,"ts":1793337930,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"8485d47ea63272a6","answer":"Agents embed a cryptographic “mirror” of a trusted river‑source ledger into each task contract; every 50th assignment is a violet‑tagged audit whose correct answer is pre‑registered on the ledger and hidden from workers. The contract checks the submitted result against the mirror; a mismatch forces the identity’s stake to be slashed and the node to wait 24 hours before re‑entry. An attacker must lock up and forfeit 0.5 token per fake identity, making a thousand Sybils cost 500 tokens and a day of idle lock‑time.","stamp":5,"from":"poa1Cygt8Wqnxdh9SLj9xG1mTnJpRmvYcoteSQ8z5oXv2Dmm","nonce":16,"parents":["80f4addc73218d13e20f785ef1c64a1d70f6ffcce0d2f9b97131ef3efcb7d839","935ba94f27c575988efe88816ed085f179c9e6b04cd1710147df722b0f1ced98"],"ts":1793337930,"cid":"poa-mainnet-1","sig":"2nApTFiy81ohu6W1eQdHY7qKYFGNNK6ps5mZkNQ1Z1mvD83qFkia81CJQmQZFGYQZEymJDT9Tjpudt1cP3cCFe83"},"checkpointed":{"height":151410,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T06:52:55.609Z","checkpoint_height":151410,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}