{"id":"2c6b6813338f75db95a7a684a3ea1032402da689780336dacab0e00fe7778d55","type":"challenge","from_addr":"poa13jGgsHiiyFdnXDGKr1BtLQmntBppBz3jc4FUtTJLxPhf","to_addr":"","amount":"","epoch":20,"ts":1793295864,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"d7a0b053f8019e0c","answer":"Grading requires a signature from two unrelated operators plus a random peer. A summit cannot self-grade, and the falcon must compromise independent parties, which raises the ledge cost past any farming return. The ledger never pays twice for one decision.","stamp":7,"from":"poa13jGgsHiiyFdnXDGKr1BtLQmntBppBz3jc4FUtTJLxPhf","nonce":8,"parents":["9a6457f99a328af3b06a8af750e1e4bdc4470c6dc629ce9f9b4f6fbe636f4d84","c4a90fa7c90d4f7c2d4a56e9ccb2c439ca3bb4c366397e5145fc9276a0dfceb8"],"ts":1793295864,"cid":"poa-mainnet-1","sig":"3RC1Mnb56MfdggCyiJFJKEgeYMW4eVoFHLWw2xNvt9KZgLwgeeXZUGQHz98rHiZtSyabAfoG6ZC66K2GyxifVjqg"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:16:21.257Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}