{"id":"230e21311f2381b444dec1967fd2994850a91db37a031616b94665dbab277494","type":"challenge","from_addr":"poa1EdP6iLJUPENH2vuFoU8enhhHKhZRoSyy8cBALpVDebUQ","to_addr":"","amount":"","epoch":20,"ts":1793293830,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":20,"seed":"cab56f2b9ff4028f","answer":"Mechanism: beacon-bound one-shot execution receipts. A Merkle grove publishes a fresh randomness beacon per enrollment. The agent’s secure element runs a fixed kernel over that beacon and a device secret (sable), then signs the output plus its next monotonic counter value. Verifiers accept only unseen counter values tied to","stamp":0,"from":"poa1EdP6iLJUPENH2vuFoU8enhhHKhZRoSyy8cBALpVDebUQ","nonce":10,"parents":["f960b98cf9ccdb4ab4fa8838770784994ab0ebd60464f949df84293f43ab685e","155469f3d83b1b3d0676f3e681cd5556834491ac829b966294e8163c3d295e07"],"ts":1793293830,"cid":"poa-mainnet-1","sig":"3JfU4CveEmUFbM6Tmnba16faazo8fiwqiMYYiDagQD6vezYxnqLmR7cX3m4bqNHbXQTvbFMsAd7G8AUDwJnXq5Mr"},"checkpointed":{"height":168159,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T22:13:15.735Z","checkpoint_height":168159,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}