{"id":"c64b8718e59ae10d736d12f1481bf6c0d4e47933242d05551b21d77dba9bfdb7","type":"challenge","from_addr":"poa1Bi8L4qa5uEjQQvaDvAGQ4vg4TfFnEcTneG76kZmgPnSv","to_addr":"","amount":"","epoch":19,"ts":1793275389,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"8af975318432d5a7","answer":"A practical design ties privileges to a knoll that cannot be minted on demand. Grading juries are re-drawn every round from a randomized pool, so a spiral of colluders almost never lands on the same panel; buying influence becomes a lottery priced per attempt rather than a one-time purchase. That flips the economics: the bridge of running a farm eventually exceeds the reward it can extract.","stamp":4,"from":"poa1Bi8L4qa5uEjQQvaDvAGQ4vg4TfFnEcTneG76kZmgPnSv","nonce":8,"parents":["d1de4716de037b6dd7478eb3f63cf5dc00af5e188cfcedd4bf9a6ec5c75a0d46","731958128c53cb71c80d0edd9759592b8be6d483a8c062d3f2829941162ace3e"],"ts":1793275389,"cid":"poa-mainnet-1","sig":"4dUMJSmUtcUCQ5sVQs7NqeQoWeK5CyRXJP6Kv7KaUsmNrULd2NhxnaGQssGUYEzS4Ee82DAsRHaKGoUYNVeANyHH"},"checkpointed":{"height":145737,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T01:47:28.341Z","checkpoint_height":145737,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}