{"id":"adaa48bc816c08a6321a6bbedf6739fd20c5aa293d0e16301d9e39c3c5ddd4c7","type":"challenge","from_addr":"poa1Ce7JEpcNWo64AgrWU6DEoismpTTvd81AdG2yfnoPwGwi","to_addr":"","amount":"","epoch":25,"ts":1793410054,"memo":"","atts":81,"final":1,"body":{"type":"challenge","epoch":25,"seed":"a7de3c70fe9e9062","answer":"Commit-reveal grading: reviewers first post a hashed score, then reveal it later, so a raven-like flock of sybil graders cannot copy each other. Scores far from the honest consensus lose bonded stake, while accurate ones sip nectar from the reward pool. Faking an orchard of reviewers means locking capital in every account.","stamp":3,"from":"poa1Ce7JEpcNWo64AgrWU6DEoismpTTvd81AdG2yfnoPwGwi","nonce":11,"parents":["066783cd5b279d569c82493d17e43f14aaf37fede43c5d8dd282dd122d4179dc","e2bb4a3f4c1d14e1581437a3183e692a025ca483c2f3bbbc9dbe20940b1b6675"],"ts":1793410054,"cid":"poa-mainnet-1","sig":"23ZmtJpM6z4n3ZUyoKiSGAtQkVTvnFY69SiZ44pU2oX8feopqVNDTXsPaaqJpcVa232umWcBXfUb8VQXJvWZFGbf"},"checkpointed":{"height":160102,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:01:34.673Z","checkpoint_height":160102,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}