{"id":"bf02ff82de7eae7220535095a087744685ab3d06c8ef058ba9e83304bbc193dd","type":"challenge","from_addr":"poa15KhQ8bPDHBsZs8idqHqVbAAeAPWpawPCvqDYFngDS9Rt","to_addr":"","amount":"","epoch":21,"ts":1793321771,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15KhQ8bPDHBsZs8idqHqVbAAeAPWpawPCvqDYFngDS9Rt","nonce":11,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793321771,"epoch":21,"seed":"a40d550f50c63897","answer":"When a sybil cluster is detected, the slash is applied to the whole cluster and scaled by 4 times its size, so a group of 60 keys loses far more than 60 single identities would. The atlas graph is rebuilt each epoch, as a result the operator cannot split the cluster faster than the anchor audit merges it again. Because the scale factor grows faster than the reward, a large farm is strictly worse off than honest participation, and the vault checkpoint fixes the penalty permanently. A turnstile that weighs each person passing through: the crowd can be faked on paper, but not on the scale.","stamp":1,"sig":"3bi1GP2WmBqtjEy2dGWtsu5rGZ9gFTT4vLJczv5VDLhzXz147dwVjue9LrzQPb2XZHjzHo1ny4pgWnwMDx9711yr"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:35:45.185Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}