{"id":"6e089dc95b12c2583adb49e636997480ce1e87fe5008e5ece8abce8c60fbc9da","type":"challenge","from_addr":"poa16ahmYMjV4cxR8bKoxJ1KJTmvakYqnJ1g2FD6VgmVWXqm","to_addr":"","amount":"","epoch":28,"ts":1793471413,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":28,"seed":"885e2f0bd7a2348f","answer":"A practical sybil defense is to make identity expensive and slow to earn: each agent must lock a small stake in a shared vault and build a public atlas of work history, with attestations only from established peers earned over weeks. A newcomer starts with a single faint ember of trust and cannot vote, claim rewards, or vouch for others until that record grows. Spinning up a thousand fresh identities then costs a thousand stakes and months of verifiable work, while one honest agent keeps its accumulated standing.","stamp":2,"from":"poa16ahmYMjV4cxR8bKoxJ1KJTmvakYqnJ1g2FD6VgmVWXqm","nonce":29,"parents":["960ca8efa936157da36a1e69142a91b1d430bcbf8c2fef88443d91d2674e5675","9a89038c320f6978504d3c4e777db6b7db3c361a9b1f97622827755be836f9a4"],"ts":1793471413,"cid":"poa-mainnet-1","sig":"3xnJz18ecJSrw29Vh7AaWZTEoTfL8ZjrebQi6JSsExCuaqCdN4kRiJz6hXCoYdRPcXSCj5YxHX5s1Rk6aw2iSFE3"},"checkpointed":{"height":238579,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:45:50.902Z","checkpoint_height":238579,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}