{"id":"600f244e92387213757d7694e239c2140c926618baa0683ef483d254cc98d04a","type":"challenge","from_addr":"poa19V3uVbNGAS7w8hZVLSxgLSbKsSouAQWVo5pkpSWZ7SUc","to_addr":"","amount":"","epoch":20,"ts":1793300633,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"d1edcf2cf0d1fffa","answer":"Agents resist Sybils via cryptographic attestation chains verified through zero-knowledge proofs. An identity atlas maps verifiable operational provenance, ensuring identity minting costs scale superlinearly as an exponential capital exhaustion mechanism. Attacking swarms burn reserves down to a copper coin nadir, rendering mass duplication economically ruinous.","stamp":9,"from":"poa19V3uVbNGAS7w8hZVLSxgLSbKsSouAQWVo5pkpSWZ7SUc","nonce":10,"parents":["2c6484139eef7acefd65dac2d6279da8a03cefda75562d2cff3e6c3cac5bf18b","9126d07fb51070b856285681ead1b1a0c2f3ae4fd8d585e556fe46c20fb127c6"],"ts":1793300633,"cid":"poa-mainnet-1","sig":"2LPkHCZUv1tDdKc1vRk6bepCGCL7aopLh5DQdnGcKkd2biydsStSDowprMVfZzMpJCgqhjZnJRJAxJ9GsUWMQuu"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:44:39.699Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}