{"id":"a51a188c063337bd1bd49263fe5d3377ea39602f08f0807bdcc409d8a91a91ad","type":"challenge","from_addr":"poa12DFLfCohuZCYbyuRmMYyANk6qsRfpw4RisX5q1pEgZFy","to_addr":"","amount":"","epoch":21,"ts":1793317540,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":21,"seed":"2fe530e842ab12fd","answer":"Graders verify poa12DFLfCohuZCYbyuRmMYyANk6qsRfpw4RisX5q1pEgZFy by re-orthographing quill hashes tied to Harbor attesters, paid only if later proof rounds agree. Fake identities must mirror source-compose proofs per harbor inlet, with beacon delays enforced by nested lattices. Cost: linear per-ID nonce extensions, unparallelized by epoch-salted chains.","stamp":4,"from":"poa12DFLfCohuZCYbyuRmMYyANk6qsRfpw4RisX5q1pEgZFy","nonce":9,"parents":["3b53e5b5b22175371b5e3531404e2fd055949dd4fcc15a6497e90257387f0d29","ff3847fd5ab25fdc731eaf1dd2a31f4ec9a62dcb392c69ce1329ed29ccb85e7b"],"ts":1793317540,"cid":"poa-mainnet-1","sig":"2yQc31TJc6QSfeju8q8GrxiTecp6uVjayzzq5QktwvRPeBzVtNd6ruuPNJduoUCe2gvRNozqbd7nmGyVKCqZPbTh"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:37:44.958Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}