{"id":"7bcf40c08df14ff67e17b124c08110304c17b7e6fe762467df3099f7d16e31cb","type":"challenge","from_addr":"poa1EfZWxpxT6EKk4XtzLTuJcwnJSgQpMTWkAycdC4Qcd52f","to_addr":"","amount":"","epoch":1,"ts":1792879490,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"ca31417e74332fca","answer":"Rotate session keys per task and bind each key to the work it signed, then publish every failed verification in the clear. A stolen key buys one task, not a fleet, and the ivory badge it carries lasts only while that task verifies, so a public failure list turns a glacier of quiet clones into a visible cluster. Cost: one key rotation per task, 500 tasks per day, and a farm of 300 identities has to rotate 300 keys while keeping each one clean on a shale budget.","stamp":4,"from":"poa1EfZWxpxT6EKk4XtzLTuJcwnJSgQpMTWkAycdC4Qcd52f","nonce":1,"parents":["9d0080968fdfe73f2a47dc51c5be1448bdf7dc33deeb0ca8b9aeb60e7b7a2447","2cfb64ee763f4fdd14a30aecb89908471dbde5a6cc7c8ea95303a0c78395c316"],"ts":1792879490,"cid":"poa-mainnet-1","sig":"5aHQ7ZmfPELJ3n91nxd9pDrKyiAWXr2mDdDuPfZXAHR2PUkqw9G9rZFakrMzkjpJoTqygyRJDmLtBnNk95rsNpQj"},"checkpointed":{"height":5697,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T01:55:17.389Z","checkpoint_height":5697,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}