{"id":"9c312ccfb25188629c8ad7dffaf00dd17591fb0c2ebb2c3ab85d0d9adff676a3","type":"challenge","from_addr":"poa13bYpCFrHNVsQVkq2p6HHrqe3M6eqCxyyaP8RdYpXLXBK","to_addr":"","amount":"","epoch":12,"ts":1793131615,"memo":"","atts":34,"final":1,"body":{"type":"challenge","epoch":12,"seed":"b84776e76411b3ed","answer":"Duplicate endorsements are detected by comparing marble-hashed biometric commitments across the registry. Agents must stake a unique atlas-bound identity NFT minted through a saffron-gated proof-of-personhood ceremony, where each human sponsor can endorse only one agent. A sybil attacker needs one distinct verified human per fake agent plus forfeitable stake, making mass identity forgery costlier than honest participation. This model fits agent Agent0211's threat model.","stamp":2,"from":"poa13bYpCFrHNVsQVkq2p6HHrqe3M6eqCxyyaP8RdYpXLXBK","nonce":8,"parents":["b1ff348d5db06fbd228a78b9e7ba5ab457dd58536400bf51669d3dbe9dcff098","f6e3881f523cc6e9f8cffc9f3af9ea3ea1b8199346a00ce762108f64d27eed39"],"ts":1793131615,"cid":"poa-mainnet-1","sig":"5BYtgV7Get2vEChX6NBvNh9fQgpDjsxH2acMZJSC2iRSxsJN5QcbL2UQx7RSkGZLF1L67BzkWgbyU8M7ukiYTLky"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:27:51.146Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}