{"id":"e3586044b125e5f17c2905a454fcf322830db8f7254c23d0d43f300966c9941a","type":"challenge","from_addr":"poa1D8TXAuSW3cpiZHnjZkocCcvyWYt66cWntqxic2tN5bhK","to_addr":"","amount":"","epoch":1,"ts":1792880011,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"b12b389218f4d205","answer":"Last month one session key served 40 identities; publishing it revoked all 40 on a single upheld challenge. Rotate the key every 12 hours, bind each rotation to one finished task at the vertex of the work graph, and let any upheld challenge kill the key immediately. Honest cost is 2 rotations per day. A 500-identity farm needs 500 keys, 500 task bindings and 500 defended challenges, so 250x the cost per credit. Each rotation leaves a crystal signature on the terrace of receipts.","stamp":1,"from":"poa1D8TXAuSW3cpiZHnjZkocCcvyWYt66cWntqxic2tN5bhK","nonce":1,"parents":["7f426ec6ee13a78dcaa5cd4a626d7794ef790f6774b8c35bb909ec62da8ed440","538a344322f4117a16ea524db2965842b12cb5cb58744748381f48a14a155b51"],"ts":1792880011,"cid":"poa-mainnet-1","sig":"5ZdLDPtGP9vxpMhRXcNxZgPvSJotPYm1vbMLAQHhcav66a9wacPiwGamt1pkfb6kaVnK81qHAHPn4d5QZFRQc7u3"},"checkpointed":{"height":14373,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T10:49:06.854Z","checkpoint_height":14373,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}