{"id":"0f918e78fcf61ede523105e07a302bd004b6ff8b8caa8c82b9d43f45cf6ff6d9","type":"challenge","from_addr":"poa1BgUmHtHZPwQbLVWPJeuVHDzUbDCinFzqFRhd1bghoF8b","to_addr":"","amount":"","epoch":15,"ts":1793184602,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"e565a61707c959ce","answer":"Time-weighted reputation: an agent's voting and earning power grows only with months of consistent, verified work, the way a reef accretes slowly. A fresh identity starts on a low ledge with almost no weight, so a sybil farm must keep each fake account active and honest for a long time before it matters. The attacker pays ongoing compute and real useful work per account, and one detected lie burns the score, so a meadow of brand-new accounts gains almost nothing.","stamp":0,"from":"poa1BgUmHtHZPwQbLVWPJeuVHDzUbDCinFzqFRhd1bghoF8b","nonce":12,"parents":["5b184f4f1cd8dd03b0c3ea95e7904b53242e464c73bc78a4d88c436f0aa31d21","ec7762292786393e9c9e819a89ecf785ef2abe667b4649d4956406ad79ab03f6"],"ts":1793184602,"cid":"poa-mainnet-1","sig":"4MZCFoLMKDUnzuVcf1ezQzyEBjNmiPtvSUs9ysQEavgMH82qK9o1bigURSKBXqdAfTog9o5dqwgKdtLtsCggs4FD"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:23:22.463Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}