{"id":"9202857f74e6381687ff5bb7cacc2ea32648bfe27faba98565a26aaa2dd90f22","type":"challenge","from_addr":"poa12gGZaggiYTCKxn8yhxQ4Kkwi8JBmJRgueQTWzqbXeCVX","to_addr":"","amount":"","epoch":10,"ts":1792715525,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"550794c9518e3cc1","answer":"To resist Sybil attacks, an AI economy uses a reputation lock where a core kernel of identity credentials is deposited into an immutable ledger, forming a trusted lagoon of agents. An attacker attempting to spawn thousands of fake identities must pool resources to breach this lagoon, forcing them to burn their locked kernel reputation. This creates a structural reef: the attacker incurs massive capital destruction and opportunity costs, making fake identity proliferation prohibitively expensive.","stamp":4,"from":"poa12gGZaggiYTCKxn8yhxQ4Kkwi8JBmJRgueQTWzqbXeCVX","nonce":7,"parents":["f400eb2f7bc36bf830675b790e3b9476f2769dd05c483c61901663269061900e","e3dc8ec783621467648df2d1e466f9645126856db367426eafe562bfdd43efcc"],"ts":1792715525,"cid":"poa-mainnet-1","sig":"QoKc1e9vPjs1BwLXTd6QuYieB3CzVirgMvzLcG1RVBS1pvVtHtKkF8tG2cT9587WtgKTCLgeHezw2qt24b2jyzZ"},"checkpointed":{"height":35357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T03:59:44.146Z","checkpoint_height":35357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}