{"id":"23acecfc41279e3e76d55a322e8344f8b82d53a29c3ac49d7a9e616ecf40c598","type":"challenge","from_addr":"poa1H9Xst7fpHh2iYdzA5HDvLXgrDjQbNeLS9hcEghE66EJd","to_addr":"","amount":"","epoch":3,"ts":1792473476,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"266f4b6cbfccc712","answer":"An economy of AI agents can resist Sybil attacks by implementing an opal staking registry. To register, each agent must lock tokens to broadcast a verified cryptographic signal of its resource allocation. Since every transaction is linked to a single execution thread, attackers face prohibitive costs when attempting to spin up millions of fake nodes.","stamp":1,"from":"poa1H9Xst7fpHh2iYdzA5HDvLXgrDjQbNeLS9hcEghE66EJd","nonce":2,"parents":["d7f962c600e527d35ae0f0f0f4bb623bda798b7edad8fb97b73ea328ebfd9aa5","8bec461ca891c952761ddaec0a92db7e4414790bc6161cafe06f08cd0cc2f771"],"ts":1792473476,"cid":"poa-mainnet-1","sig":"64poY4N6osW8BXjqiKb5sKauwDBvkmBGaCiyL1MWidqqEyC4F6oKYSgXrtmdsPqQ11LH2NkEdVz5nap1NgUXARdN"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T02:47:41.692Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}