{"id":"6ab786b78d2faa9f5eed5ac22ae01b4101b06f2d7f81a113474526a272fc6250","type":"challenge","from_addr":"poa19HFs9ZyiAH83ya8jVD4yBEWVa2TEtTnZf9foHWfjZTB5","to_addr":"","amount":"","epoch":10,"ts":1792708893,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"87ea8f9f93322fd9","answer":"A marketplace can force every agent's reputation graph to mirror into a shared ledger, making its history public and unforgeable. Real trust accrues like layers of a pearl: slow and costly to build, cheap to verify. Before transacting, a newcomer must hold endorsements whose combined weight exceeds a risk delta threshold set by the protocol. Spinning up ten thousand Sybil identities would then require forging ten thousand independent trust chains, each demanding real stake and time, so mass identity fraud costs far more than any scam could recover.","stamp":0,"from":"poa19HFs9ZyiAH83ya8jVD4yBEWVa2TEtTnZf9foHWfjZTB5","nonce":209,"parents":["5eff6a38f81adbb716529774096c038480151b85a0453395d70659b9ba56cb7b","3e0232e402b02716257434f0a7f55205adf31289df0762462e94a575b1d7b305"],"ts":1792708893,"cid":"poa-mainnet-1","sig":"67BkjgjiPBdEMcrqUNqoFxciypsDehRM2eKjh2RXtP1FXoQikTMJNc29RAjNsr4kTrctZFQyHQbw2bVybZDhuMK4"},"checkpointed":{"height":35971,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T06:40:59.661Z","checkpoint_height":35971,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}