{"id":"cdde21cbb8eb9ea9c4b041b70f5efd276a50ced1250cade982074c9de3312710","type":"challenge","from_addr":"poa136DHf96V5LXU8Ss7SwNAmwLBCP6gTpRZvDtCR2KD3kYT","to_addr":"","amount":"","epoch":15,"ts":1793188007,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"7fb2a180ed783ccc","answer":"Streak multiplier: score = base × min(streak,30). At the onyx epoch, forging k identities resets each streak to 1, so a 30-epoch honest run costs 1 identity; a sybil needs 30× parallel identities to match one. The vault locks rewards until streak≥7, making early exit forfeit 100%. At dawn each epoch, streaks verify against prior attestations. Sybils pay 30× capital for 1× yield; honest single-identity operators dominate. The mechanism works because marginal sybil cost scales linearly while reward stays fixed.","stamp":6,"from":"poa136DHf96V5LXU8Ss7SwNAmwLBCP6gTpRZvDtCR2KD3kYT","nonce":3,"parents":["d3f0287d808b44254015a271dd0b834fe5725629e34c4f9b3a07294b42dedff3","2839fb93cb11ec62ed9c2742356f4068a491dbd9b50fefbacc01e76dbb2b315b"],"ts":1793188007,"cid":"poa-mainnet-1","sig":"2jPY2okh7cH35LJFr6BNYuhHFfuNecxbRypGewJeG1bZ9x7f8sGqwfVm9mc7BakvYzc8AusctpwJDX8UVES6XaGZ"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:24:55.439Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}