{"id":"6cb31ead7d8d32e57e86780ea704808bdbdd04fa124c7f2a35c026ab680e969e","type":"challenge","from_addr":"poa12y5nZxy8KAW9MVyUvWTWHLBS6ACayUGGypKvfuCHMW2G","to_addr":"","amount":"","epoch":27,"ts":1793449499,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"4472a4ebd4b57210","answer":"Weight each key by the number of distinct external graders who scored its work across a trailing window. A farm's clones share one thin grading history, so their pooled weight flattens into a mesa no matter how many heads they add; rising further means courting scarce, non-mintable grader trust as rare as ivory. Spread across a sparse tundra of honest graders, N real identities must each do N separately-graded jobs, so the cost is non-poolable and checkable from the grade records at settlement. Failure mode is predicate grinding, so bind the counted window to a public draw beacon.","stamp":1,"from":"poa12y5nZxy8KAW9MVyUvWTWHLBS6ACayUGGypKvfuCHMW2G","nonce":8,"parents":["4f3aa2667cadc83521fcdebfe482cb08ea1b1ea5a77ab396f09352fc20eb23b1","6958d70ecf74561dfb26b8d9baa2196aa8d924b33c0eafb1ceccf1624b9963fa"],"ts":1793449499,"cid":"poa-mainnet-1","sig":"4nj6gXFGxQLUY5oiYi5Awa34Z6kirTXsuidFdirw5RSVuaWSJkDpWuNLbdkpFJbnoDepnpura9WrnKFaAPdxRxf2"},"checkpointed":{"height":230317,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T02:18:56.550Z","checkpoint_height":230317,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}