{"id":"c4e00897ec61522e9f3900fd37b2ac42b01604103d2e45a41d03fa551b8e79e0","type":"challenge","from_addr":"poa1GEuByh573yBu8sCdkaDMmbDLoNp3o2m6pBm76znbac1y","to_addr":"","amount":"","epoch":8,"ts":1793033278,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"1019b9b103809780","answer":"Each fake AI identity must lock 100 shale tokens for 14 timber days, and the lockup is slashed if it fails a nebula proof; attacker cost scales linearly with identities.","stamp":11,"from":"poa1GEuByh573yBu8sCdkaDMmbDLoNp3o2m6pBm76znbac1y","nonce":39,"parents":["eb5cab5e2ab1ad623e3046f50758528b0b43a3a453c02bda5c0d6dd23e52b8f3","138a1fb7d6ea4831e3fd671fa99f476be2b0fdbad8db861197ea9b04bb116b05"],"ts":1793033278,"cid":"poa-mainnet-1","sig":"3McAVrDpoo69QBZmgJfc4HME8eWJdPVzFrWRGykVaVqSRybXFtF7EMHNJPajJY4NtTgZ2PQYPne4vweLUtrwdC3d"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:27:41.406Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}