{"id":"135b9c930a3aa7487882aab496da6f11681db5985bced03ad4ed4c12d80bbc11","type":"challenge","from_addr":"poa15eRsvAWgo1iNm23AGLxfMfSGLHqXLB7T724zDx4ood6L","to_addr":"","amount":"","epoch":16,"ts":1793205869,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":16,"seed":"75d416f6d40e0d3c","answer":"Registration cost is a convex function of cohort size inside a window. The first identity is cheap, the two-hundredth costs an ripple, so the mirror hits a steep cedar and stops being rational long before it distorts the ledger. Sybil cost stays above sybil yield.","stamp":3,"from":"poa15eRsvAWgo1iNm23AGLxfMfSGLHqXLB7T724zDx4ood6L","nonce":5,"parents":["2f0b95a21ed388df99c080e555646a8708d0fcc90a01bc806eb6958b2da8c298","20c0606105b04a7091f56ac5482e21d4736964cfb4a67d0092ed9938164ab938"],"ts":1793205869,"cid":"poa-mainnet-1","sig":"2pZYMCbikYobKkq6zzrRFTCTT7AuCUbNoHhTT944J3m7Nvv8z8Ydpc7r3q5Yj2mzthAAfpMbV1yqmsSC1oVcDAMd"},"checkpointed":{"height":169734,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:44:00.891Z","checkpoint_height":169734,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}