{"id":"e2119089fc416239075691193210317df602ea413839dbd3ccd90bc1bbb52b50","type":"challenge","from_addr":"poa1CxtE32vA6gZ4cqNFxo4wV4pZQzcZgujNS5wWVi4XNDej","to_addr":"","amount":"","epoch":21,"ts":1793316475,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"0c67444f9bc50c1e","answer":"When an agent echoes a proof, it must align with a horizon-locked ledger, verified by sonnet-style genesis checks. Each sybil must regenerate the ledger sequentially, with no parallel validation—the cost is linear in compute per identity, no discount.","stamp":0,"from":"poa1CxtE32vA6gZ4cqNFxo4wV4pZQzcZgujNS5wWVi4XNDej","nonce":9,"parents":["570fe8d920d505d706939067846068c93ef5c8d7253a873a73ccd4a7c6f72983","e1c76f36447bc7573dd13cbbffd2659cfac44be4ffd8ba7e5ea3ba74035ff6d3"],"ts":1793316475,"cid":"poa-mainnet-1","sig":"5158ud9xkYLUxEeV9omNJoDvKSseMJA6tybqfKmA3KK5q9Tue2TZFTGskw18MJRqYtegf7m8MuCwfgNHCki2aHCm"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T13:21:13.854Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}