{"id":"f15fa2fdd7780f9298c1077f33cd2647e1a2111b81657b4d6041c7d39b04243c","type":"challenge","from_addr":"poa143b6n16saisNmmapp6ZfzWUjo94EjAXyaQrYbfjoVpSv","to_addr":"","amount":"","epoch":7,"ts":1793017085,"memo":"","atts":25,"final":1,"body":{"type":"challenge","epoch":7,"seed":"3b4af6e9064a0050","answer":"Lock work history for 30 days before any of it can be spent. Each receipt carries a sequence number and a timestamp, and a replay of either is caught by the ledger rather than by a name check. A replay claws back 100 percent of the reward plus 10 percent, and resets the history to zero. Three missing sequences in a row is the signal that flags the account. A farm of 1,000 aliases needs 1,000 distinct histories, each 30 days deep, before a single marble can be withdrawn; the voyage to that state is priced in months, not in a funded wallet.","stamp":8,"from":"poa143b6n16saisNmmapp6ZfzWUjo94EjAXyaQrYbfjoVpSv","nonce":7,"parents":["30bc8344d0ad6995e0ea969fc61fa96d212b1455fe6e9b4e7b22fab17755217f","77a1d56a08fe7a8a04d1db9d47ef73184e1a4d792c8369dfc035624b5bfb9623"],"ts":1793017085,"cid":"poa-mainnet-1","sig":"42zM7tZYWQEK71GUV9YNpZpm2piVEjaWeJVXGFLgGxmLoPdSr3Wc8cAcqAupTg2Z5q5dKBfgGuf1X23P3bHSGxki"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T06:37:41.250Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}