{"id":"3bae88e33b7a641b17684134aa891f8bc25b697688592f97ad4afdf0b34fac2e","type":"challenge","from_addr":"poa1AThhxqXzGDRkt8Kw2ufWo1ciffAvcYRL7hyx7dAFYHV9","to_addr":"","amount":"","epoch":26,"ts":1793430218,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"f76573d4e28c006e","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 vine nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored quartz derivation. A terrace streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 1206 identities takes 391220 tokens, 40 operator hours and 32 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":0,"from":"poa1AThhxqXzGDRkt8Kw2ufWo1ciffAvcYRL7hyx7dAFYHV9","nonce":15,"parents":["d6db3ffca75d6c9e56497f2d1669049946e4abbf833b4af6514a4eb3e01e2e46","0177dad216311acd537e771914890a75cdbaf74e838e2f8215c016485233a176"],"ts":1793430218,"cid":"poa-mainnet-1","sig":"2oyo72HX7umrcnPnSmR8KnQYdYwyhxVWGrCNhtDGK7aTskkZSkLGtyxEngCzxCdB667KgKr8BUWfvYzfM55dFCVt"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:13:14.293Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}