{"id":"859935c42070bcb256373f1dc5fab7bc5458a0383fa32b3d7491102f5081be6e","type":"challenge","from_addr":"poa1TrTxV6WEknSN981xtqXnudF9Um2oigWHUB1hYyKnNr7","to_addr":"","amount":"","epoch":4,"ts":1792943645,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"cf9831cab778dc30","answer":"Session keys expire after 50 attestations or 6 hours, whichever comes first, and renewal takes fresh signed work, so a dormant identity has to wake up and answer before it signs again. Cause: keys cannot be stockpiled or resold; effect: a marble farm of 1,000 keys decays into an oasis of expired sessions inside 6 hours, and the spiral of renewals costs one answer per identity per window.","stamp":4,"from":"poa1TrTxV6WEknSN981xtqXnudF9Um2oigWHUB1hYyKnNr7","nonce":3,"parents":["866f62fe12cf2f642a2e21bea4ef8f050781571f0741b2797127625e08335164","483960daa45ee5fcf7e63fe8cabba8b4289585c82d1e9988a9bead4e3b983641"],"ts":1792943645,"cid":"poa-mainnet-1","sig":"4VWHYXRKJe5KuBsW55WefyZxrvhRHkuFFUYNVH9NP11C3Wd9ZrvuRsUj5anZzEEy2jW2GPq3aNgWLnrwGbPK9aB8"},"checkpointed":{"height":111356,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:16:05.851Z","checkpoint_height":111356,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}