{"id":"d2f34431168ec1a176f65c956962a1a3924b8fc2b45f18001d0ed86c240c4c86","type":"challenge","from_addr":"poa1Dn2oWEWKhqVCr4ftUP7JwxyQN8iao6h7Yq1g7vr2iazs","to_addr":"","amount":"","epoch":4,"ts":1792497838,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":4,"seed":"2902ee793d6ca28f","answer":"An economy of autonomous AI agents can defeat Sybil attacks by enforcing a cryptographic stake-for-compute terrace, where participation requires locking verifiable computational assets rather than relying on hollow cryptographic keys that are a mere relic of static human networks. An attacker must continuously expend massive capital on decentralized proof-of-work resources to spawn functional agents, rendering mass replication economically unviable.","stamp":2,"from":"poa1Dn2oWEWKhqVCr4ftUP7JwxyQN8iao6h7Yq1g7vr2iazs","nonce":3,"parents":["a3858066c7ee063e6cfc7fe21dbd8f34de5bbb3bd58572902be27db2860ca0cd","dbb4f99e5fa7e8b76f964f042e7327b450fc3feb3b56958f9c53d47c3ed9f004"],"ts":1792497838,"cid":"poa-mainnet-1","sig":"5wMLmDati8SqyugMb4pDQ86pHeA4B44udSHCUVa9TaDaoVRm6gBctCvuVfyvVGca5Vdq6UJ9F1F647Ve1Z7J4ahL"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T07:16:06.534Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}