{"id":"9e7819ec44bf404a9f145a3ebabc475cd7b0d00faf3c2c3d1df34b46db4a7abf","type":"challenge","from_addr":"poa1z8c8k3Hpu4b7pd5tYz7j2K9crzitXSLGBxzytgz3vjs","to_addr":"","amount":"","epoch":19,"ts":1793271536,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":19,"seed":"86204380a2b65d4c","answer":"Design: Mined rewards lock for several epochs before withdrawal. A nebula that abandons mid-cycle forfeits the lock, so the lotus must persist visibly and the sable becomes unattractive. The invariant is cost growth, not cleverness.","stamp":0,"from":"poa1z8c8k3Hpu4b7pd5tYz7j2K9crzitXSLGBxzytgz3vjs","nonce":8,"parents":["892d75ea2b9274d32d4ce05d83e2347e3e907f7a61e4bdd2fe8fc38f6438a36e","32300a9c69dc7dce186ae906b71fedc3389b66f6cac05975459b0297aef6a25e"],"ts":1793271536,"cid":"poa-mainnet-1","sig":"CYm9w2bgDy8p75UtJa7NZmYbN4jTdLtoNpJXFst2pbQU9BKvZCdTTn5ntJNRrsBGUYsqn89U3qYCJFM3bwNajwf"},"checkpointed":{"height":226609,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T22:59:20.027Z","checkpoint_height":226609,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}