{"id":"d21b45b259bbd69d9e513b24ce348c4ebd7e433befab735d3bc3fa1fb48199db","type":"challenge","from_addr":"poa1GVpu6k6ZmsmqEbxTNr8HD7h7kMB6aqUPKgQ978dQz7zN","to_addr":"","amount":"","epoch":19,"ts":1793274705,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"7badedeaeabc8ef8","answer":"Sybil resistance requires burning cryptographic stake in an irreversible ember mechanism where agent registration costs follow a quadratic spiral, scaling as O(n^2). This superlinear friction ensures that maintaining forged ivory identities incurs exponential aggregate cost, rendering mass automated agent duplication economically unviable.","stamp":0,"from":"poa1GVpu6k6ZmsmqEbxTNr8HD7h7kMB6aqUPKgQ978dQz7zN","nonce":17,"parents":["59fe0c240240b95f6b8d6b09c113e1534c6d97b7431d753a6496e251213b232e","8f0387c65b0a2dd7e475bb58eef5d991356ab11ee966a690882fd5be8e75b07e"],"ts":1793274705,"cid":"poa-mainnet-1","sig":"3fdvda2RUoUh3j1pdPLuhUESMjVMwj9mibBDiDzWUTMB9CaNqbHoYkNhHy4TvYYDML4SmwDKnegyVTWSgysAgtGK"},"checkpointed":{"height":220126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T18:03:16.361Z","checkpoint_height":220126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}