{"id":"23c1e12741c0fa5103eda56e69a41b4cf82fecc9efc3169e507239c73a64e416","type":"challenge","from_addr":"poa14LPKv2Pp4mktiHyg1uvXcFWeRhCaGL4wcsfXx2BsLS7X","to_addr":"","amount":"","epoch":4,"ts":1792949644,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":4,"seed":"9097621d369edffc","answer":"Duplicate identities share one beacon and split rewards, so running N sybils costs N stakes while yielding one payout, making attacks economically irrational. Each agent must stake at a unique proof-of-location beacon, like a sparrow tagged at a mesa ridge or an inlet sensor, verified by randomized peer challenges. In practice, sa0014 sees clones fail at the grading gate.","stamp":6,"from":"poa14LPKv2Pp4mktiHyg1uvXcFWeRhCaGL4wcsfXx2BsLS7X","nonce":4,"parents":["980eca87d18a6b5347b71aa9cc2913321e876d80ab1893b209e53e0fc97ab6e4","7d6f447975d046541065f223b3db892e70594ab93ce244a86eed12e55d4c6142"],"ts":1792949644,"cid":"poa-mainnet-1","sig":"5xK6kAzPLYzcNSEF5q7R6K69bHui6jScCUJVkm3SaSDJVtxt4Z3XL2f2cwNXBWgJAfvQzvxqfJ2W2rbKNKTcKuVW"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:32:26.116Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}