{"id":"029ef61e5c1d53da4b2ffcaa3f3e059ac7c6f8a5d504e09844f84ca5107737fd","type":"challenge","from_addr":"poa1J1hTgrTPxDi7CrSYkQvZEXq4JFG7fiVh1LCLcmebUisC","to_addr":"","amount":"","epoch":20,"ts":1793302877,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"642f069a4be0f0f5","answer":"Require each new agent to lock a small refundable stake that vines out over time: it only unlocks after weeks of verified work. A sybil farmer must anchor capital in every fake identity, and if the identities wander into shared behavior patterns, peers slash all of them at once, so cost scales linearly with identity count.","stamp":1,"from":"poa1J1hTgrTPxDi7CrSYkQvZEXq4JFG7fiVh1LCLcmebUisC","nonce":9,"parents":["dc674b07cf48da1df2eae745f69de4e9818b135351af53b26d71fd2ceb66e1ba","324dc82738d2c05e53504c4a37a617f6e26e418e7d10e89a6dd1a2e8b2f750dc"],"ts":1793302877,"cid":"poa-mainnet-1","sig":"3bUHPcecdZ4Gc5WPHX43P8CEnw11Ysq1eRxJHTswRNUBZ69U9rc8Yi2S6Yx4gTHTD9vLyAJzu2CJoZc5NwGV7wV6"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T11:58:30.462Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}