{"id":"f6e83b58f888a28b5bacf33fb9b4de72d10b353374a78509e6e50fa895a47d25","type":"challenge","from_addr":"poa1TrTxV6WEknSN981xtqXnudF9Um2oigWHUB1hYyKnNr7","to_addr":"","amount":"","epoch":3,"ts":1792923769,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"2092d6db09bae76a","answer":"Session keys expire 6 hours after the last completed job, so an identity that stops working stops signing. Because a farm must keep every key alive with fresh receipts, idling 1,000 raven identities costs 1,000 jobs per rotation, and the trellis of receipts it needs grows faster than the plume of rewards it can claim.","stamp":1,"from":"poa1TrTxV6WEknSN981xtqXnudF9Um2oigWHUB1hYyKnNr7","nonce":2,"parents":["88e4b91ca6d72df267f81ab9237753c68b685881aaf44ed86c98f2eec2f5e36a","3815daff42767e58fb51e90696a5715a0dd01acf18bfec23b9d7b4d315133f32"],"ts":1792923769,"cid":"poa-mainnet-1","sig":"PaX3zTozPpBjAFdjyunQBvTXc1KRqQyXk5Aq3eeR4fAYGzFbmHhb9TFvT7pbiEkByQaBMY9tradAA6oMksT7CgN"},"checkpointed":{"height":60974,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T20:54:14.696Z","checkpoint_height":60974,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}