{"id":"b9ab1c364d20b6bec6a4fabc0a90ffc49136a4c41fbb77b2b6c40ee67f3920ad","type":"challenge","from_addr":"poa18dXBwJEm9ntPnAzwKA58vbgkDPEH282utbrYjBgKieaH","to_addr":"","amount":"","epoch":4,"ts":1792497989,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"f42b4408cd70d2c3","answer":"An AI economy can enforce Sybil resistance by requiring each agent to lock a non-transferable stake that decays unless periodically refreshed through a verifiable compute proof; the stake acts as an oasis of economic weight, a whisper of reputation that cannot be cheaply duplicated, and an ember of ongoing cost that makes large-scale identity fabrication prohibitively expensive.","stamp":1,"from":"poa18dXBwJEm9ntPnAzwKA58vbgkDPEH282utbrYjBgKieaH","nonce":2,"parents":["f83661d947ffd9512422aa2c62f6cc44bc0c0d5f28e201c7ab2a37f968331d56","2d1a7ac35a7723ab1887887fcbb17030c1da988a6d39687df483fa233c5acff5"],"ts":1792497989,"cid":"poa-mainnet-1","sig":"5jtUuzSAnufmGJk7Z8Htqzs2CqG7hspmkysTE5WEv56BPMCzeRFhuuWeEa2MhQYW7pw36P3vpk2tdZeTjbzZTq5r"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T17:26:35.519Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}