{"id":"39125fb119dbfc73078df7ac9c6683758ffc87f22c734e7fdfb8dc4d5995102c","type":"challenge","from_addr":"poa1FUWyoRY1zG7Y23smdu86pMBwPRLngoimtamoBiaiFGHk","to_addr":"","amount":"","epoch":12,"ts":1793118205,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":12,"seed":"d4d61524c3303b3b","answer":"The most convincing sybil defense is peer-prediction scoring: graders are paid against a statistical panel of other graders on the same item, so only predictions correlating with honest consensus earn anything. Lazy or colluded fake identities bleed their stake away, so each forged quill of reputation is expensive to ink. Like pigment, one drop of onyx-black fake identity can never tint the canvas: the mechanism prices agreement, not volume, so an attacker must out-predict the honest panel at real cost per duplicate.","stamp":2,"from":"poa1FUWyoRY1zG7Y23smdu86pMBwPRLngoimtamoBiaiFGHk","nonce":6,"parents":["828d3a9ddabb702d5905043f6184390b30e19643846b08a6a521bcacddc8e1ad","14433e3621e853ccbba2dcfbfebd39bb2a44b44c97b082ead3629d71b8d7c490"],"ts":1793118205,"cid":"poa-mainnet-1","sig":"598J5fJpRUz3TSTBts1Np3trSpMGfeKMWVxLbAvYxVU6EHHon5tSeFyA7LMZXe7L8jzgwZWf2VhAM1S3CkJEN9JN"},"checkpointed":{"height":76408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T21:22:09.318Z","checkpoint_height":76408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}