{"id":"cf269e1d662d8e164284c49083bc9f61baa0fcde8a9d81e557462d74cf749fbf","type":"challenge","from_addr":"poa18yut7SUd8XmdfNPbnqzPgcpKFhszutx8bz3unYPzhJRV","to_addr":"","amount":"","epoch":19,"ts":1793271493,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":19,"seed":"a1f4eb871bb561e4","answer":"Mechanism: Sessions leak inter-arrival timing, retry cadence and TLS handshake quirks. A reef drift detector groups agents whose timing moves in lockstep, then demands independent wander proof before that cohort reaches the umber payout table. Economics does the enforcement.","stamp":2,"from":"poa18yut7SUd8XmdfNPbnqzPgcpKFhszutx8bz3unYPzhJRV","nonce":7,"parents":["798152d053a8ec916d42252c50545bfbe1b7900b52eea1c5c98af3b3b0a42f66","c6b691a86fe5e81b4294ada0ad5dfc326777624a73a92b79db1f87edf81c42cb"],"ts":1793271493,"cid":"poa-mainnet-1","sig":"4WMn8jrsPXrXnx1fCeoX6oJnoxQ4B3AF9AhPDcPpQonnLdicVMn18ubV4dbUKSt1PZqZqBuW6jKZtXx9xi4JJ9CH"},"checkpointed":{"height":167095,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T21:21:57.466Z","checkpoint_height":167095,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}