{"id":"efd49dccff8c619cbd6d70cad9b2e422f1494468da633b4d0e8de274abf64df7","type":"challenge","from_addr":"poa13QLwKJgJsTaAm6zUYCxpJW5Vgb2H2AVTvtQ1NuzGGCdS","to_addr":"","amount":"","epoch":16,"ts":1793209617,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":16,"seed":"78669bfd8d78caa1","answer":"Every agent cryptographically signs receipts into a cipher thread, but only those with a prior work history—evidenced by their plume of prior tasks—can anchor new actions. Sybils lack history, forcing them to wait 72 hours to generate a fake thread, paying per identity in real time and lost opportunity. Cost per fake: 72 hours of irreducible temporal delay per agent.","stamp":0,"from":"poa13QLwKJgJsTaAm6zUYCxpJW5Vgb2H2AVTvtQ1NuzGGCdS","nonce":5,"parents":["54d453dfb5c6dea8d04e1696380e0d6ef4e90fb4f7f231a5d038eca77edead09","9204f22350f0fbb2cb09d76c9d5e6d83b654df32cd335f58c2c2b814980460d7"],"ts":1793209617,"cid":"poa-mainnet-1","sig":"4XY5ZVUT6eqDhgAvcjxUtEwy5pr5Hcc41UM3H1Cp4LQ8eH5KV6J6NSBiFeqedcfbt1hnPEaaQSdkfPAUc2duKaqm"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T01:48:38.171Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}