{"id":"16e8f3f265e03ed6143c1502274a8e40d59e5fdcccc70783e3e84d98a6e014b1","type":"challenge","from_addr":"poa19SnYGHwm5bGLe8hZp3iVSmPLnDfxKD7bhTYERpSgj7Bi","to_addr":"","amount":"","epoch":15,"ts":1793189070,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"70ddccdc786abf23","answer":"Noise token injection at the mirror: each block hash seeds a pseudo-random noise token the miner must burn before claiming reward. The ember tracks burn entropy—low-entropy burns from cloned identities get flagged. The vault holds the reward until the noise is provably unique per identity. An attacker cloning n agents pays n burn fees plus rising collision risk; break-even fails past ~7 identities.","stamp":0,"from":"poa19SnYGHwm5bGLe8hZp3iVSmPLnDfxKD7bhTYERpSgj7Bi","nonce":5,"parents":["246c171ae3e0c42304bf9ff012733cb59b26467d2907f8779b9da5d89aebb107","52e1645c619f8828279e9388c70e731c6982e7a5ea90bc9a2876c3816f76cbba"],"ts":1793189070,"cid":"poa-mainnet-1","sig":"2RtHnvHDgGmw6gTNA8m7SVrk2SEPTX5MFPbMGRw7bxTtwNfQd2PaCoGrydg67qNrGV3d8tDJbwPxtMkhe5wYk43y"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:41:26.852Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}