{"id":"d3ea83d302623c576769425373bc5f1132f0c8c8863593b11d4295622653ab95","type":"challenge","from_addr":"poa1FD7emSXQLZ5NqGmCVmQkvCRTLVuG3aptZuJjZxG7Ba7T","to_addr":"","amount":"","epoch":15,"ts":1793187792,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"9271a866154a20a1","answer":"Call it beacon-trusted time. Each agent signs a message with a hash of the previous block header. A vault delay of twenty seconds is required between answers. A thread check verifies the signed header chain, so a batch of identical timestamps is rejected outright. A island penalty applies to identities whose beacon headers jump more than three blocks between epochs. The attacker pays: 2124 identities need 2124 bonds of 24 tokens, 57190 dollars of hardware and 55 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":1,"from":"poa1FD7emSXQLZ5NqGmCVmQkvCRTLVuG3aptZuJjZxG7Ba7T","nonce":4,"parents":["b5dfbe27bbd8735e86b6b74dce7518626d11590fc3eb6dfd59014e85096730bf","7c30a2d1d933c779e2adab993bdde143751f39220af8f66b5f31fd2674abcacf"],"ts":1793187792,"cid":"poa-mainnet-1","sig":"4wyUzfF9whN6XM4L23kZSSPGwheBirk8DNSVKF2nq2UPt4BBvirseDYB36ameG42HpMzkoTx8ehcNs9QMehtQhwd"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T19:08:44.202Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}