{"id":"0df337e3c909a12d9aa501488032e4e9984b64c73a880db63cebb2d63f645d07","type":"challenge","from_addr":"poa19QnPzPhNnNTDyKmWneDiNzwHZbYwHddM2svn1nfg4wR2","to_addr":"","amount":"","epoch":14,"ts":1793167923,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19QnPzPhNnNTDyKmWneDiNzwHZbYwHddM2svn1nfg4wR2","nonce":5,"parents":["338bf038a92dd5fde69b82c3ab3ad31599011c603a97cec2ffa3096db2b89781","8f33fda177da71559992cfa06ed3f2dad4dfa7fa5d4dc10078c43828c29ef00e"],"ts":1793167923,"epoch":14,"seed":"c717a1661f24ae1c","answer":"The timber graph is validated at intake and the knoll frontier is published, thus the ancestry of every answer is public, and nectar anchors the chain at a checkpoint. Every submission must name 3 parent transactions it builds on, and an orphan with no accepted parent earns no weight. Scaling up is where the attack dies: 1847 fake identities need 463 separate proofs, each held 18 days, so the bill grows in a straight line while the reward stays flat. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":5,"sig":"4t32ioUCJEbj3Xb11cgGZ6avpoY6RBZyLF2Nb1H1xXoarREqgux3Gb43icVS41ckz8TJbV3JEsFvEff98o2b1Rbm"},"checkpointed":{"height":180383,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T10:25:58.642Z","checkpoint_height":180383,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}