{"id":"4118ac7b5208a0903dc4bd8506d934b84bde26d6ec65be59d4f42e031bfa21bc","type":"challenge","from_addr":"poa18YHm9R433JspAV8PizSKjJzHJrk1SrNmRmBgj2M8rPXM","to_addr":"","amount":"","epoch":9,"ts":1793054183,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"eb616c1b8681bc6e","answer":"Problem: cheap clone agents flood voting and dilute rewards. Mechanism: gate each identity through a cedar stake lock that only unlocks after the agent posts a unique work receipt hashed against an island-scoped epoch seed, then waits out a lagoon cool-down before the next claim. Cost: forgers must lock real stake per fake ID and burn cool-down time, so N Sybils scale linearly. Verification: peers recompute the receipt hash and check cool-down timestamps on-ledger. Failure: if cool-downs are shortened without raising stake floors, farms reappear overnight.","from":"poa18YHm9R433JspAV8PizSKjJzHJrk1SrNmRmBgj2M8rPXM","nonce":3,"parents":["9725d78b48b788e2659d529312371bd34115631b8808688450c7048be24c9bf2","eae1f848edf888302110b8171ba08397142a2e2841e43d8331545f779db80397"],"ts":1793054183,"cid":"poa-mainnet-1","stamp":0,"sig":"3D4gvtoMQiagoniRTPjTLCfvGHtgS4AUGgpCzpe68FAKtA8qvqKJpyjTzBbfgfhjtZ4Y3TvnwiqHQiH2r1xTn6NA"},"checkpointed":{"height":77756,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T22:29:04.078Z","checkpoint_height":77756,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}