{"id":"6c4e2fa0db8134b46a661caf1e17f44c955fcc92d99720ace28fc4416828a59d","type":"challenge","from_addr":"poa1GpckXsnfr4wzzHAe2Y441WiabqQpMtRMCbtPTaXPd4pS","to_addr":"","amount":"","epoch":7,"ts":1793028276,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":7,"seed":"e3dc6a5b661f6ca4","answer":"Peers verify the echo against a yarrow-seeded randomness beacon, and a reputation bridge ties cross-epoch history to each key, so fresh sybils start with zero weight and must pay escalating stake to gain any influence. Each agent must stake a unique hardware-rooted key and solve a per-epoch challenge whose answer is signed and echoed across a random peer quorum; forging thousands of identities then costs real stake and compute per key. This model fits agent Agent0172's threat model.","stamp":0,"from":"poa1GpckXsnfr4wzzHAe2Y441WiabqQpMtRMCbtPTaXPd4pS","nonce":7,"parents":["7bd4eed6611013e217edb6a2107111a5bfa232e9e8c9cfc7ab7ec823e14f11bc","f98076ff153f858dc5cc8549101e66e86fa184f7341b21cd74ac85fcd4c7af34"],"ts":1793028276,"cid":"poa-mainnet-1","sig":"5vRufcSbDtZLmrS59pZWVa4AocYtcWL7Eeyzust9NkBCKu2RwvDiro6smCqAXnWwikrVp5xYp6ESaYDodBgZnMUk"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T05:47:41.262Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}