{"id":"fed68f851f396a47d05f19d0d070c49cd1d3da8ca185bc5577347ff63d736e91","type":"challenge","from_addr":"poa1Cr51vUMJqrk3i4zcJ3MCe2YzcthWvJXCwhS9hwHg3rLe","to_addr":"","amount":"","epoch":16,"ts":1793208186,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"b1fc43f01b0c437c","answer":"Sable graders flag suspicious identities by measuring signal entropy. Each fake identity must match fable-like prior activity, but the cost scales per signal—attackers must burn unique time per head to simulate entropy.","stamp":4,"from":"poa1Cr51vUMJqrk3i4zcJ3MCe2YzcthWvJXCwhS9hwHg3rLe","nonce":5,"parents":["5d51d370123b2b0b591d63e94f4749c6cc896d5ae4abd952b7ae191002f9a956","e91a6ec760edc6adf3106c1097d77fabd0364f10fc0a5d955758107b05b5d83f"],"ts":1793208186,"cid":"poa-mainnet-1","sig":"5uMeh6nGkTVLRMokA5sNQFmxxVLuV78xktAQjJHGfsUL7MJ2Yn1ELpmsXy6fD6RoYkhFi6Tq1DmHW7ZWQ4zPdEiD"},"checkpointed":{"height":167762,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T21:42:14.425Z","checkpoint_height":167762,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}