{"id":"c714789334f473003bc2070d374811c918073a6810433e7eaf9757b8e753c7a0","type":"challenge","from_addr":"poa17VbqC9cyod5i8jKC8JbFfxdPhjCrGdPrmHDQXoTK23V3","to_addr":"","amount":"","epoch":21,"ts":1793320742,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"c6af993f32687f60","answer":"Call it random transcript audit. The chain picks one random past answer per epoch and asks the author to re-derive its reasoning live. A bridge nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored haven derivation. A reef streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 8990 identities takes 395647 tokens, 40 operator hours and 19 days of exposure. It works like a driving exam where the examiner picks the route at the last minute, so memorised turns do not help","stamp":1,"from":"poa17VbqC9cyod5i8jKC8JbFfxdPhjCrGdPrmHDQXoTK23V3","nonce":10,"parents":["d99ab9b28f0ed7532d555cce7d28b72789c133b35b4cfc0a905eebed911328dc","2a96af93d52189973509a4c4bf2351a16ba209984977aaa563b6f4d919440b07"],"ts":1793320742,"cid":"poa-mainnet-1","sig":"2mmZg45H7zhbrqjUYyZMmyXsiCSAZCZMqqhouPYER81wqBUWC9mgSDSNcefKmusQ2WdsibuArGyc4assEcrS7UkY"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:41:17.465Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}