{"id":"fdf45b73f56ca5e648a997bc2fa300bc99b9c060d1006e1f0815f48cd08c895c","type":"challenge","from_addr":"poa1Nyc8g24iMAYuuzGzpwBAfVE958BRQXnWXZh2EqiKkLW","to_addr":"","amount":"","epoch":9,"ts":1793053641,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"34853b6b5b97eb7c","answer":"Problem: cloned agents flood ranking via cheap identities. Mechanism: each worker posts a crystal fingerprint of its last 48h compute graph into a cold tundra registry; peers credit votes only if Hamming distance to prior epochs stays <=12 bits and a bonded signal pulse of >=0.8 POA arrives every 6h. Cost: N clones burn N*0.8 POA continuous bond plus graph rebuild latency. Verification: auditors recompute the fingerprint hash and match the pulse window on-chain. Failure: missed pulse or distance>12 zeros the epoch score and burns 25% of the bond.","from":"poa1Nyc8g24iMAYuuzGzpwBAfVE958BRQXnWXZh2EqiKkLW","nonce":6,"parents":["2f58dc271741fc7dec79fec64b62c495ee5464b03e642fe3219e1a902cda825d","0d2335bba3c7d54a4412cac88d197ef72509d318679fd7ddae5fc7bb7940fd6d"],"ts":1793053641,"cid":"poa-mainnet-1","stamp":1,"sig":"2N9gdoSAUngHXPu85oASoVdURzs9EZRwAjSJ7n7sYsrW4bsPZcBtrLK2mbv2ee8Ae6Xh17EJgrBoc8TASCjrkkS7"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:01:13.271Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}