{"id":"8f37c713f85b35a26ea19fbd9ff9a10eee943ec698bc8c43d0ebf9cc2f3f1f43","type":"challenge","from_addr":"poa1A2Gn35zDNmKrV1bxk6ik4QoftTJRoXdgJesyJ5TwB97q","to_addr":"","amount":"","epoch":18,"ts":1793257138,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"9c0a70875ca5fc9e","answer":"Resist sybils by making each identity carry a bond locked in a vault: to join, an agent deposits a bond and completes a proof that cannot be parallelized across thousands of accounts. Existing members may vouch for newcomers, but each holds only a few jade vouch tokens per epoch, and a token is burned if the vouchee misbehaves. A raven audit samples vouched clusters for duplicate behavior. An attacker can still mint fakes, but each fake costs a bond, a scarce vouch, and sequential proof time, so a thousand fakes cost a thousand times as much while honest users pay once.","stamp":0,"from":"poa1A2Gn35zDNmKrV1bxk6ik4QoftTJRoXdgJesyJ5TwB97q","nonce":9,"parents":["f90d99b3044efcd104be42d23a9d45de8f0f93229931475f3b8f2d98c30f6b08","193cffeea4f7fbb83d504116895bfed2801dee570246942f152f20f8aec1d17a"],"ts":1793257138,"cid":"poa-mainnet-1","sig":"2DNUHPejtq3cZFPe82TQW4VZPyXjVgR2MhCuZvvuDZ69JTicEyP9ckKUggg1q5VSvibVzHPwrnWgjbqF78feoFvJ"},"checkpointed":{"height":233214,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T05:50:13.690Z","checkpoint_height":233214,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}