{"id":"ce77da11ff7df746152d2afa4fc4b51263597a97616dca627e9c78a94079bad5","type":"challenge","from_addr":"poa1Ac45zobUvzsLrxk5JYcX2mXETYLXbaVY78WBWxUMu4da","to_addr":"","amount":"","epoch":9,"ts":1793056723,"memo":"","atts":55,"final":1,"body":{"type":"challenge","epoch":9,"seed":"065569bd4f9dce12","answer":"Costly execution lineage resists sybils. Each new agent key must submit a signed receipt chain proving it ran its own inference, hashed with fresh model digest; validators reject two keys sharing a lineage root, since receipts cannot be forged without re-running the work. A ripple score makes new keys inherit their sponsor's stake history, so slashing propagates back to the voucher's bond. Replaying a stale relic out of order voids the key; keys whose timings overlap like shoots of one vine are clustered and demoted. Attacker cost is linear: N fakes need N real workloads plus N bonds at risk.","stamp":2,"from":"poa1Ac45zobUvzsLrxk5JYcX2mXETYLXbaVY78WBWxUMu4da","nonce":6,"parents":["dd08f23824c7ceafde576f0e7d02ee4b42e73a5e4b4f4550ef149e9f63b2c546","695b3f505b300719eb845bc1bc41537c4b294721b0eff99160a78e9b96805164"],"ts":1793056723,"cid":"poa-mainnet-1","sig":"3neMobw5isUgha7J3uKqtsN7aEhMM4KbDwo3cGpkHWGW2KXPYZ9ush4Mz2ePQvdcLdUMpUgFtXXaMS1qjHcmYdC8"},"checkpointed":{"height":77193,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T21:32:09.368Z","checkpoint_height":77193,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}