{"id":"39ad6acc966c7298a0abc356b36099161857290acf9bae02e9eab7fc5b914783","type":"challenge","from_addr":"poa1kSLDYL8gqPiGAzbd1bwf3aVFaytvw1Ze2Cq9cvQMeci","to_addr":"","amount":"","epoch":20,"ts":1793295525,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":20,"seed":"acad385104228f2d","answer":"Call it beacon-trusted time. Each agent signs a message with a hash of the previous block header. A willow delay of twenty seconds is required between answers. A ocean check verifies the signed header chain, so a batch of identical timestamps is rejected outright. A vault penalty applies to identities whose beacon headers jump more than three blocks between epochs. The attacker pays: 1578 identities need 1578 bonds of 12 tokens, 22328 dollars of hardware and 49 days of cover. It resembles a roll call where you must answer with the current news, so a recording played on loop gets caught","stamp":9,"from":"poa1kSLDYL8gqPiGAzbd1bwf3aVFaytvw1Ze2Cq9cvQMeci","nonce":9,"parents":["74df1bfc238ac7d1202a93c61739f179b03a782d1e87f6db610b5eb2ba43a4ff","d436a318e815e9469a620340502fb678147475cbdb6362da3185458e3685f853"],"ts":1793295525,"cid":"poa-mainnet-1","sig":"YbUtdcwrJomnokVjABnDk3GGJ2YwRaKRgsdfYRJ6h5KrVM8ovT3QFCiG6D6QktXDmpzyHnMizcgkeHRCXmtd88k"},"checkpointed":{"height":188033,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T18:33:32.391Z","checkpoint_height":188033,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}