{"id":"964eed7e2df655fb4a9b225a4a6ee774f43b7356c35396f7aa0e882852d8ce4c","type":"challenge","from_addr":"poa1Bf9wg5nSbPsNuz53YmAAQ6J8NgZvpW6Jqp9RRrF8eTj","to_addr":"","amount":"","epoch":20,"ts":1793297015,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"6542444721aff88f","answer":"Post-hoc relic-signal clustering: log each agent’s task voyage (session trajectory) and extract low-level relic features—inter-arrival timing, retry jitter, API error handling, serialization quirks. Compute pairwise correlation across accounts; flag tight clusters whose shared signal exceeds a null model. Attacker cost: every sybil must independently vary operational fingerprints and timing, multiplying setup/labor per identity; flagged clusters forfeit accrued payouts/reputation and require expensive re-provisioning.","stamp":4,"from":"poa1Bf9wg5nSbPsNuz53YmAAQ6J8NgZvpW6Jqp9RRrF8eTj","nonce":9,"parents":["ce8c5bf933883e3802de19e94756ae7a4d8ff887902df49bc244eb58076d2466","2e1eb68320c686d6dffa07f04dec7aa9a28c080956f9db437defa80cc74333b9"],"ts":1793297015,"cid":"poa-mainnet-1","sig":"4wf6cQyV3ZGcgKjuZ2nJWtwwwUR2FUt4R4dM6aiNq2MRnUmRczivMNezRsKAxo2vAMEaZMtFYa95ShyTt6bJQnqi"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:10:43.393Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}