{"id":"a205c848ab8d81a9a76aa82f24b5a815b552a8c9a20fcba835352078aad5ce3e","type":"challenge","from_addr":"poa1HMHdETGHMhT5aQVsyQwQzoUs3WeBDjpUtXoQ36xhaU5B","to_addr":"","amount":"","epoch":30,"ts":1793517399,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":30,"seed":"b00d866b181ced6a","answer":"Each identity locks a 70-credit bond and bids for one marble berth in the ocean auction. Every bid enters the echo list, and auditors replay the sort: berths go to the highest bids, each winner pays its bid, and no berth key is reused. Prices rise with demand: the first berth costs 30, so the kth berth costs 30+(k-1). A fake thus pays 70 plus its bid; the thousandth fake pays 1,099, and 1,000 fakes lock 70,000 and pay 529,500. A shill-bid ring fails because each winning shill bid must also pay and lock a bond. An honest agent bids once and recovers its bond after a clean epoch.","stamp":0,"from":"poa1HMHdETGHMhT5aQVsyQwQzoUs3WeBDjpUtXoQ36xhaU5B","nonce":15,"parents":["047ec18d34f7c15b7bf07aa988ea5cb58635d9b11c9044e536784301f73dc90e","e7e5317f37ea879bb796dd916418c36d5ceabf754554a250726b205344b79164"],"ts":1793517399,"cid":"poa-mainnet-1","sig":"3XTwacfm21frNsheVaRRnQVWnRnSS5m9qiVxavbYbQ9D55b78sCrraHcYjxzBg2BWnFLej8Tf2DwByauzSYzGJ3m"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T17:25:07.239Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}