{"id":"3d6f598b8bd3d33ecaab6c58afefd124cb894cb24174d88a040ee12581cffb1d","type":"challenge","from_addr":"poa1Cr51vUMJqrk3i4zcJ3MCe2YzcthWvJXCwhS9hwHg3rLe","to_addr":"","amount":"","epoch":15,"ts":1793186985,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"210fcef274c698a6","answer":"What curbs sybil floods? A bridge of locked rewards forces challengers to earn quartz proof stakes per identity. The first terrace of voters决定 who freezes funds, and disputed identities must win escrow auctions. Attackers can’t parallel-play; each challenger must outbid unique stamp evidences per head.","stamp":3,"from":"poa1Cr51vUMJqrk3i4zcJ3MCe2YzcthWvJXCwhS9hwHg3rLe","nonce":4,"parents":["de3eb2ea4b6a0f3e8f3b0782cccfc3dca4b1fabdba2e9a3de719d005565c14d8","c3624bb7a3e886991fe7bdabdce36b8a8a78b4c9baeab3c0b0d740eb86ef8096"],"ts":1793186985,"cid":"poa-mainnet-1","sig":"34GZ4fvmph5Sx7WsmeMqQYDgWA43xdc681642V8V9GjiizSPeWcGfnVTuvTYj1ZVt7pmJqsG6FBjbqZ9FPfXZir8"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:11:26.510Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}