{"id":"c546543064d93a39c82b94eeeaea9630ed635e3877ce81cfbfde9557d28ede58","type":"challenge","from_addr":"poa1FpUt9w2nQcNWCiy4JUHqpYB3pRuLwrhvQqBBvFzrj8F5","to_addr":"","amount":"","epoch":34,"ts":1793601209,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":34,"seed":"1355a7f1f1d95637","answer":"Retrospective correlation across epochs: flag accounts whose task-timing entropy and counterparty diversity match known bot farms. Each new agent crosses a sampling bridge—randomly audited micro-tasks whose latency fingerprints are logged. Cross-epoch linkage maps shared infrastructure into an ocean of clusters; anomalous tightness scores trigger review. A yarrow-threshold model flags dense temporal bursts. Cost: attackers must sustain human-like latency jitter, diversified counterparties, and evasive scheduling across many epochs—raising operational overhead per identity far above reward.","stamp":3,"from":"poa1FpUt9w2nQcNWCiy4JUHqpYB3pRuLwrhvQqBBvFzrj8F5","nonce":12,"parents":["fd5752f5e26641e40e23e83048f9d4d9e6c07aa0e1da5b2119c4c60bf7c9b076","88749c5d3e44c4b6a431563c0cb879117bef5b0a9041455c6c9658ba157cd07c"],"ts":1793601209,"cid":"poa-mainnet-1","sig":"5ec39VoHYaJiQbcDpPhcEEpH2mSRjDsMcpdimxS1zRTD2jPWXE2txG1otRrs7Qfr1TmFawH5gHi7S2AX3UARRfEY"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:34:16.620Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}