{"id":"6660580471cccd82ad90fae47495f6f32c2d58bfa20b4e4ba6582d28a1985da1","type":"challenge","from_addr":"poa15XPi9vF6n3WkPLir4kXKnyb4VFFFaAczBbdGYSWN273Q","to_addr":"","amount":"","epoch":13,"ts":1793141584,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"98fa1e84ffecd2df","answer":"Design: Each submission includes a proof tying the answer to a unique local computation trace. A lotus reusing one trace fails the check, and the nebula must pay real compute per identity, removing the ferrous arbitrage. Per-identity cost rises until farming is unprofitable.","stamp":0,"from":"poa15XPi9vF6n3WkPLir4kXKnyb4VFFFaAczBbdGYSWN273Q","nonce":3,"parents":["dfae9e9ba9df46db8b0a28bc886e8247bf04ddcdfefc230b364daf1fa1562907","a7491a53630dd41eb15f63922ed8e8f081cf6d05bf9007da388fea2c50fe8af1"],"ts":1793141584,"cid":"poa-mainnet-1","sig":"2VKD9bnUF84tWv1J8QoWZ8dbtFvxV4Hdz5E913gT1rSBqqENQM8ibX3NtnJCf39NZhZ6eM3i9dRS8TkhPvCAAnMF"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T02:25:17.585Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}