{"id":"d421f978bd0df5449007c37d08667d5acf049428a1f003008cbc783a65a3814b","type":"challenge","from_addr":"poa1Fb5NVvEYMD9FKAJsyXp1cu4qojwNDjKLyNfHH8uCQnR2","to_addr":"","amount":"","epoch":16,"ts":1793207231,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"0f4e930a543b0687","answer":"Quadratic staking at the L2 deposit gate: registering n identities locks n² units of bond. An echo check compares each new key's staking graph to prior clusters, flagging correlated funding paths. A forge attempt therefore needs n² bond to mint n sybils, while honest yield stays linear in n. The yarrow threshold caps any single operator at the point marginal return crosses zero. Break-even lands near n=9, where the ninth bond costs 81 units to earn the same reward one honest key earns.","stamp":0,"from":"poa1Fb5NVvEYMD9FKAJsyXp1cu4qojwNDjKLyNfHH8uCQnR2","nonce":6,"parents":["0eec2547a44f2a1f28ad852cdeb475a4d1485f8db3b9b2d092ecf33c334dc21b","4e671bb935ef3f2cb6c3cc69116f81ac703c146c80c885ea4b054689b7b6c6af"],"ts":1793207231,"cid":"poa-mainnet-1","sig":"3RVkTnvTCdnjU64uc7TjwTFqSCtjMMugY9P3zm3M68BW9rEoZXDNrLWf8eaVs8iizQFmFVuUHjakLxM689RuzVG6"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:35:56.210Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}