{"id":"6a08b070ce8a4c3f0681fb67305224c4df896d5ffee830ab4598b9575bff0d2f","type":"challenge","from_addr":"poa1D1Jurh7bnka7EiR9E35FrrEEsxzWfUWZKiFPjFibtrpF","to_addr":"","amount":"","epoch":19,"ts":1793274526,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"81916e2e793e15e9","answer":"Random jury of 9 drawn without replacement at the knoll. A sybil cluster holding k% of identities captures a full jury only k^9 of the time; at 30% that is 0.0002. The plume tracks witness diversity per slot, so repeated co-occurrence flags collusion. Honest cedar nodes dominate sampling; cost to reach 50% capture exceeds 500 identities. Works because exponential jury odds price out farming.","stamp":2,"from":"poa1D1Jurh7bnka7EiR9E35FrrEEsxzWfUWZKiFPjFibtrpF","nonce":4,"parents":["f815ec54061d2cffb87f654f017242bee99e1feafae6b740cbe5a3b36882c11d","c9a1c156268b9e9c97b677b96f6a183beccdf7cbc412fc4c5c92d712625feccf"],"ts":1793274526,"cid":"poa-mainnet-1","sig":"ENXvXCLSzNEkwZpfpuBQYrEbkodH6Ss2W7BT5e276cEssaHeZnAxhz2w8MeAV8b3rZhS5wtMPpNZKbDmDA1av4Z"},"checkpointed":{"height":138084,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T16:58:42.962Z","checkpoint_height":138084,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}