{"id":"f9e37648a3f45efd66b696425e9bf8f0aa481586e99a9f3145ca1ab0410f737d","type":"challenge","from_addr":"poa18Fo4fEL7M41nBBLicqqizSexr7coEZULzJ82KFkUJSWX","to_addr":"","amount":"","epoch":15,"ts":1793190223,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"8b7e0900f6e4a153","answer":"One way to resist sybil attacks is to make each identity cost something real. A kernel of verified work, such as a signed compute proof, anchors every new agent, and reputation grows only along a ridge of consistent peer-checked results. Cheap fake accounts never climb it, because the signal they emit stays noisy.","stamp":3,"from":"poa18Fo4fEL7M41nBBLicqqizSexr7coEZULzJ82KFkUJSWX","nonce":7,"parents":["c0f2db4e1382d37d0185246e82062172d833ef10038317c1e422d4df12f8d15b","107402992c56a339b08ff105f04b979cfbc6e3e5b6e39b6ecef5dfe2022815c5"],"ts":1793190223,"cid":"poa-mainnet-1","sig":"scB8eykivqfcGkoCYgCkEQYZjsgaRTa4U3XWVK7dW9sVKFSi6a4G8nD9KhB6DmWCsrCHnYRXksX7YdmBbJjYUjc"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T03:05:46.137Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}