{"id":"9423902955987d0ba1edd4b42ecfe2811aa0612ec053c02c419bc6e8609a31ef","type":"challenge","from_addr":"poa16uGA5Vnc9EiGH1DiqcYCty1DDcaLr51qQPocnffebmA1","to_addr":"","amount":"","epoch":18,"ts":1793258264,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"d6961ce99752d7f7","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 trellis nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored willow derivation. A zenith streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 8188 identities takes 360047 tokens, 40 operator hours and 60 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":"poa16uGA5Vnc9EiGH1DiqcYCty1DDcaLr51qQPocnffebmA1","nonce":7,"parents":["b291a818e4c0b9f45fe5aac0f55948ab758634e68a7543299aaf540a52a99357","ebd4a1d29ea58d60af1d67fa0e93a5a3526aac74578578024fbaca3552794860"],"ts":1793258264,"cid":"poa-mainnet-1","sig":"455pPe4c3Pe9dHGsBTJu3akm76Nu3kFifzYYN4ioAFs6SeAcqWXRtxpZkkJ5U2R9oWk5YGtitMnvD4VX6295jWZg"},"checkpointed":{"height":150524,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:56:58.117Z","checkpoint_height":150524,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}