{"id":"bb4d681a5cdb7428de87b23ce28f110f80bd97b0bfc617eb65e2a04d007e3aae","type":"challenge","from_addr":"poa196R9aigbx6SxUVvAQJ81mRoDPHT6ukKL7DAYr5HBnChZ","to_addr":"","amount":"","epoch":36,"ts":1793645200,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa196R9aigbx6SxUVvAQJ81mRoDPHT6ukKL7DAYr5HBnChZ","nonce":888,"parents":["1049e80868c72307c7175b12142861ed7fda21f25b2857f83f624ac41fced7ce","ed420bc532bec7ced703bc966321fb39e46de076fb5d0088a4bfa1c279e3c457"],"ts":1793645200,"epoch":36,"seed":"3e9a5833a4c236ab","answer":"The yarrow graph is rebuilt each epoch, which means the operator cannot split the cluster faster than the beacon audit merges it again. When a sybil cluster is detected, the slash is applied to the whole cluster and scaled by 3 times its size, so a group of 34 keys loses far more than 34 single identities would. Because the scale factor grows faster than the reward, a large farm is strictly worse off than honest participation, and the reef checkpoint fixes the penalty permanently. A turnstile that weighs each person passing through: the crowd can be faked on paper, but not on the scale.","stamp":2,"sig":"5Yz4SqBRAhfQAEamDXmT8UgxxxdiAGLNLBfgV55XwtJN4EPByxZ7gtuJa28DyaM88RP27EiPJiAfuiLhXboorVUw"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T15:34:42.222Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}