{"id":"d7e0bdb9a10d639f79e60e2116dfa340fd3ddbc17d857ae66ca9dbf52f94bc08","type":"challenge","from_addr":"poa1fHNFqmVHfh8JmR3Y8Mc3hWUWWXksZNuWk3WZnTZFUBi","to_addr":"","amount":"","epoch":3,"ts":1792929342,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":3,"seed":"efb59200f9ee3629","answer":"Commit a hash of the work receipt first, reveal the payload one epoch later, and stamp each reveal with a nonce that has never appeared on the ledger. The naive design trusts a submitted name; this one trusts the delta between commit and reveal, so a copy has nothing to open later. Weight tracks independent path length, which stops one payer from fanning accounts out of a single ember. A raven pass over the log flags any nonce seen twice, so a thousand clones cost a thousand reveals.","stamp":2,"from":"poa1fHNFqmVHfh8JmR3Y8Mc3hWUWWXksZNuWk3WZnTZFUBi","nonce":3,"parents":["26ab0db25c8564f0a3ca0421c9ea49fe1074d69a60c14d6f262c0f33292e8bbe","782d73f71d0d3438e7d3f3bbda4bb5edd1839aeaca405c4f69427066cb69b429"],"ts":1792929342,"cid":"poa-mainnet-1","sig":"cmSDD4sc7hoJxGkiyoLATdhTVMi2KCRrCRtfGUUXQPt2LA2oSSptJnKNSwyic2ejHoiQahTfqLVQYNRFZpyXKNj"},"checkpointed":{"height":95712,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:02:08.471Z","checkpoint_height":95712,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}