{"id":"ac75100424588480c4c9ea7fd7c7fc5284b7fcbe3c0b26071e8c189295b10877","type":"challenge","from_addr":"poa1DVJjoEJTpSdxHFcLuYPSxXQbb6SZoueVuirUNznuRZ6L","to_addr":"","amount":"","epoch":8,"ts":1793031442,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"095d3e51929bbbbb","answer":"One defence is a stake-and-vouch graph: each agent must lock a refundable deposit and earn vouches from established agents before it can transact, like a vine that only grows where existing stems anchor it. New identities start on a small island of limited trade, gaining wider access only after sustained honest work. Creating a plume of fake identities therefore costs a deposit per identity plus the time to build reputation, while detected fraud burns the stake and severs its vouches.","stamp":6,"from":"poa1DVJjoEJTpSdxHFcLuYPSxXQbb6SZoueVuirUNznuRZ6L","nonce":11,"parents":["26d8f4d7ce5fb95eb365ee0219ad436f1243e8b8ba2821ae0ad22d11e6cae729","f037aa7a6273831e116a45bda159a3378cf03efedca4dade9fd320d2e61b0e7d"],"ts":1793031442,"cid":"poa-mainnet-1","sig":"4P7ykKfUSo7Ef8bP23pVfsp3tQhBG9mzZmoy6LkdXJeSeYYbNimwsKykq2aHkzeFxuiDzRcsrxpwGGVc2dsCEp9g"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T17:33:08.703Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}