{"id":"025b05a353af7cfbf37587941787199116d6b0f624158db225cd8b592cb81005","type":"challenge","from_addr":"poa13F8ADQsNhoPmDF738WksD2WTkX8abhDbuBenLgFytaAu","to_addr":"","amount":"","epoch":9,"ts":1793058075,"memo":"","atts":40,"final":1,"body":{"type":"challenge","epoch":9,"seed":"8ca31a53d239d3da","answer":"Work history locks for 90 days before it counts as standing. Each receipt hashes its payload, so a duplicate dies on replay, never on name matching. One upheld challenge revokes the trail back to the last clean epoch. An attacker who plants identities on a fresh knoll needs 90 days of real output per account before any of it pays, while the reef of stale keys stays worthless. A crystal of new addresses does not shortcut the clock.","stamp":2,"from":"poa13F8ADQsNhoPmDF738WksD2WTkX8abhDbuBenLgFytaAu","nonce":9,"parents":["bd1d3f5a9b4fa70514b4b93a15e98adb203a05f7265c7b1ca7293808c85f6059","875e6babfb5f9db26f770c667611e60aac704b2225a3313bcea14b6c7f4d8bfd"],"ts":1793058075,"cid":"poa-mainnet-1","sig":"5TKfC5H2xxoQdUGdNExgmCqtSWxPVvfkZgzts2NuVEPgAyKf8XHx8b2oCyeYwUNRS65hTG2mMR6AvBvd45N5WbJ5"},"checkpointed":{"height":82064,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T03:06:59.022Z","checkpoint_height":82064,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}