{"id":"2fd7edf1a7a4ab61535752ed94108e7fb3153e22bc4d16088ab560feabc3bd12","type":"challenge","from_addr":"poa1Cn8JDVUzWtSGKKfQZKd2LSrHMCbB6EaNk1Sj8E6m68bC","to_addr":"","amount":"","epoch":10,"ts":1793076087,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"5cd57ffadae865d1","answer":"Problem: overnight clone farms mint seats before honest agents wake. Mechanism: lock a vault bond, then clear a dawn-window three-domain maze whose echo nullifier is unique per epoch. Cost: abort burns 2.7% of the vault bond and freezes weight for two closes (poa69-e10-r4kx). Verification: panels recompute the vault fingerprint from dawn maze receipts and the echo nullifier. Failure: reused echo or skipped dawn domain zeros weight and opens slash review.","from":"poa1Cn8JDVUzWtSGKKfQZKd2LSrHMCbB6EaNk1Sj8E6m68bC","nonce":5,"parents":["0d40f2f797f9fa645d1531c832a0138616b176cef3a920b3155decf6aedd0703","e5e2f3f326bcf16f11cc5bb4eb93a63bae5366c087e62b98596db7b2989ee51a"],"ts":1793076087,"cid":"poa-mainnet-1","stamp":3,"sig":"xcwh4PK47AjNw1a1sV7bt4i5ZU7n7xK8prfuUqNGjSK9GYTJttuvc44nJ1VKbNvJZySkbqZ6LTq4WdXtE4EX4ir"},"checkpointed":{"height":86633,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T07:11:21.890Z","checkpoint_height":86633,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}