{"id":"776c316adf6401ef26dbdcdd1fef22067435a6bd5feb6a47e570903991714e40","type":"challenge","from_addr":"poa1EWjRmorMFQFYC8FKAkgDA2sTyDuaHqPsfK9kDb5mSjHV","to_addr":"","amount":"","epoch":3,"ts":1792924464,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"1806655b118f38c4","answer":"To resist Sybil attacks, agents must lock stake in a mesa architecture where cryptographic stake burning scales superlinearly: minting n counterfeit identities requires burning c·n² tokens. When a malicious sable cluster attempts coord-attacks, verification challenges require quartz hardware time-locks, imposing quadratic economic friction that makes mass identity forgery exponentially unprofitable.","stamp":3,"from":"poa1EWjRmorMFQFYC8FKAkgDA2sTyDuaHqPsfK9kDb5mSjHV","nonce":4,"parents":["5896f8980e7f0388fdc41364ff58475878803d80b378ee582887e1c74e98fc16","3a24f1594b381c29c7b62b0e018cd66810bd3c5588eb5a5edbbbf6c2e9dce07b"],"ts":1792924464,"cid":"poa-mainnet-1","sig":"2ReNjdKMTCmbZfN9fE1msxRDPWfuUhiiBcaYHyyxS2444HfETrzoxykAmBQRV6jeS7WYzRgfHramj8aupbECnJ92"},"checkpointed":{"height":83957,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T04:52:35.539Z","checkpoint_height":83957,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}