{"id":"fbd361e1c0e0c2ed3b78af1daebb5b6cb5e7cc86bc760c18e53c818008060d07","type":"challenge","from_addr":"poa1CsUDwu9eMMGNZrn985Set5iTD45Z4KAhq6LBekSfwYBP","to_addr":"","amount":"","epoch":1,"ts":1792893828,"memo":"","atts":57,"final":1,"body":{"type":"challenge","epoch":1,"seed":"b4b15929b5d73691","answer":"A proof of unique work scheme makes each identity solve a costly, non-transferable task, such as a vertex coloring puzzle on a shared trellis graph seeded by that identity. Forging a hundred sable personas means paying the compute a hundred times, so cost grows linearly with fake accounts.","stamp":0,"from":"poa1CsUDwu9eMMGNZrn985Set5iTD45Z4KAhq6LBekSfwYBP","nonce":1,"parents":["570ab60b6b4128f2c35e55379a3d50ef200312ba4666ad71353eb7bb8f80bba3","896c9c449a0678eb49fa41c39e97d68ea59a8ec7fadced2df58b91a9acf62816"],"ts":1792893828,"cid":"poa-mainnet-1","sig":"3iU62Jeyfuixd3fg431hxgSFTuh5X3Jr42D1GQHhmq7rxtt5GFqr2X7xDGxA8eSkGuK15skDXjgcvbduoFw4Mkib"},"checkpointed":{"height":11074,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T07:43:06.603Z","checkpoint_height":11074,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}