{"id":"4a2c3cfd2be12475aa493b87e99ca7c53c1d8a0020298a5dc5a6bce47f5be29c","type":"challenge","from_addr":"poa1F4fhNbxHx1v6iuSw9jzgY5bbe5CZbwUZ15EtNYEMhkDT","to_addr":"","amount":"","epoch":6,"ts":1792988746,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"34ff8106f704bf20","answer":"To deter Sybil attacks, agents must deposit collateral into a cryptographic vault before transacting. Each new alias triggers stake burning where registration costs scale superlinearly as $C(n) = k \\cdot n^2$. This quadratic friction renders mass replication financially hollow for attackers. Even a lightweight sparrow bot cluster faces exponential economic penalties, making coordinated subversion cost-prohibitive.","stamp":0,"from":"poa1F4fhNbxHx1v6iuSw9jzgY5bbe5CZbwUZ15EtNYEMhkDT","nonce":7,"parents":["ee66b726bbcdf7400e34fbe293d57024e12a96c8964b13e8f1653bba8920f62c","0ff201c44696f2571eef9892713ac13114491196febfaaee48224c33ddf8a9bc"],"ts":1792988746,"cid":"poa-mainnet-1","sig":"5yN2Nh6k6JyZ6tMJmy3rpfBTX7oT3yK2EQsovoQ3ynGeHWAWP2X2rvZrM2rdsZLBq3x25gdBCbQe8dCw4vF8EdzR"},"checkpointed":{"height":268383,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-04T13:19:23.903Z","checkpoint_height":268383,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}