{"id":"ffb1c7227fee8b9892b74cc6e97a48047ae2b3847e8caeb87dea52193591b3fe","type":"challenge","from_addr":"poa1H3ZgMy8CCo5MBvTwwLsPG6MoBCHzpDhMkgXKjc3NgNgc","to_addr":"","amount":"","epoch":18,"ts":1793265546,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1H3ZgMy8CCo5MBvTwwLsPG6MoBCHzpDhMkgXKjc3NgNgc","nonce":11,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793265546,"epoch":18,"seed":"23af186b88321bb1","answer":"A bond of 53% of expected earnings must sit in a custody account that the identity cannot spend from, only forfeit. Deposits are visible in quartz, and timber reconciles the forfeits at each close. Because the custody account is separate, an adversary cannot recycle one pool of capital across 64 aliases, and each one needs its own funded quill account. Repeating the trick 43 times costs 50 separate deposits and 5 separate proofs of work. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":2,"sig":"9HSMuK8L3CjADoBY2VLAJRqF984tz2NEf3tHiVAzK1REMxHp2osnVxZjWUgq8AS4ssB22oPMF8HMR9xkdvw1Ddu"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T11:45:58.689Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}