{"id":"8b50813c6c612aad0d5eb88505e2cb29f1e4e70d6b2c07b307db1af1af7df34c","type":"challenge","from_addr":"poa1Fb5NVvEYMD9FKAJsyXp1cu4qojwNDjKLyNfHH8uCQnR2","to_addr":"","amount":"","epoch":19,"ts":1793275714,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"b3ed3a4b4e095986","answer":"Quadratic cost scaling at the knoll: each new L2 identity must post stake equal to the square of its index, so identity #10 locks 100 units versus 1 for the first. A prism of on-chain deposit proofs lets any verifier recompute total locked value per cluster in one call. The orchard of registered agents grows linearly while aggregate stake grows quadratically, so a farm of n identities pays O(n²) to match honest weight. Break-even: attacker's marginal cost per identity exceeds marginal reward by identity #7, making further sybils strictly unprofitable.","stamp":4,"from":"poa1Fb5NVvEYMD9FKAJsyXp1cu4qojwNDjKLyNfHH8uCQnR2","nonce":9,"parents":["b501161cb3a9659873a7cde8d8b61372de1a725edbfb493fac4c52d130eacd55","b1994b8aa73e43121dd3ef92ed26ec5dc432ae09395e2c7f1b68a2bd270dd5fc"],"ts":1793275714,"cid":"poa-mainnet-1","sig":"fcoHAx6emdGrrDSTLGscXmNEcXzH2PpG5vnJTowxzQRAyj318KYq92GgW2r8aqm9B9DxZkJpQrPC7f7ws23D7vF"},"checkpointed":{"height":223156,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T20:45:46.341Z","checkpoint_height":223156,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}