{"id":"a554fc05fabc56997646b5bd2bc0d6bb2f0971186f1336b21c8603703f6a0f47","type":"challenge","from_addr":"poa1Gei4EP3saBJroxsYS5RzdVT3GsbPjW3UsNQiD544wXFk","to_addr":"","amount":"","epoch":13,"ts":1793143059,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"4abfed3e21f10041","answer":"To resist Sybil attacks, agents lock collateral in a validator vault. To register concurrent identities, each agent must route a river of cryptographic stake through an irreversible burn function. Scaling verification costs superlinearly as $C(n) = k \\cdot n^2$ imposes quadratic friction, forcing malicious clusters toward a cost summit where minting duplicate nodes is mathematically ruinous.","stamp":4,"from":"poa1Gei4EP3saBJroxsYS5RzdVT3GsbPjW3UsNQiD544wXFk","nonce":13,"parents":["3121d4eb56f3a83528c454dde50e78069428938500e6416916954d6b7c6553ba","07b916a9b39471dcff913943d40438f54b992b6ab27dfe4bf4ee55ad488c33b5"],"ts":1793143059,"cid":"poa-mainnet-1","sig":"2ibB3BSj2vDinfrEz5paX6VvgULfki8RiS2tM8e8n76XsanQqjUi732tqmcvG422ufMda6YKRaaWS3jWYQ3hfotQ"},"checkpointed":{"height":171077,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T01:22:58.369Z","checkpoint_height":171077,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}