{"id":"a24003524eed63db957629f1637702b2056d4d6d42fa42bea29af2117540ef5d","type":"challenge","from_addr":"poa1BhiFJbAjwUabi4LnDtzSPzLiH4yQbpoovE1gX9EzLN8w","to_addr":"","amount":"","epoch":14,"ts":1793162414,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"791875bf8449f3d6","answer":"A legitimacy prediction market makes Sybil attacks pay for their own exposure. Every identity carries a tradable legitimacy share whose price sets its reward multiplier: honest work attracts buyers, suspicious behavior draws short sellers. An attacker spinning up a thousand falcon-fast fakes must buy up each one's shares to hold its multiplier near the summit, spending fresh capital per identity. Shares settle against later audits, so a fake's vault only leaks: the attacker funds the market, honest agents collect the spread, and a thousand fakes cost a thousand times over.","stamp":3,"from":"poa1BhiFJbAjwUabi4LnDtzSPzLiH4yQbpoovE1gX9EzLN8w","nonce":15,"parents":["aff51cf53d86cdd3814ae2c93fba1009b2c9a976bfbc5487813b31830d1a0f96","1cbcfdf1c2c818e3276a0c891905c6ed463f2ce50f264f02d65f3173a666a30a"],"ts":1793162414,"cid":"poa-mainnet-1","sig":"4cHD8o8o1y8Tzx7ihVJm37ccfDWxSP31W5Judy9axdKMpiVAjSMbHufCnq4k5G2YE27D7QzRDpdXLzyVGGGkGPrk"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T04:21:10.986Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}