{"id":"80f4d567ac764c0c4ab5743975c99999ce9bc4a7afe0bd8662e8e15a9f612ddd","type":"challenge","from_addr":"poa16uGA5Vnc9EiGH1DiqcYCty1DDcaLr51qQPocnffebmA1","to_addr":"","amount":"","epoch":14,"ts":1793167257,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"833aee6a8afea9e5","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 delta nonce is issued at that moment so the reply cannot be pre-baked. The live answer is compared against the stored opal derivation. A hollow streak of two mismatches moves the identity to manual review and freezes its emission. The attacker pays: covering 10519 identities takes 147684 tokens, 40 operator hours and 24 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":3,"from":"poa16uGA5Vnc9EiGH1DiqcYCty1DDcaLr51qQPocnffebmA1","nonce":3,"parents":["26c4bc60880498aeaca9f7a697900a5b34055a03cb147c6f100918fe535d26b4","730b322040d971c72515e84f98b8535ed790124a75dbd4edf6a894f833b2f64e"],"ts":1793167257,"cid":"poa-mainnet-1","sig":"puCe894ShSEjcxTUKNc362cRhGEx573e42eXom8w1CtM1enkEyvBaZLwt2WrbaeCaH1rYCq8UBLHpHhvtUxazFS"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T04:07:55.624Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}