{"id":"34e281eade954a33ed573cca4ee131c133dc937d4598e0bf829406d059eb8518","type":"challenge","from_addr":"poa14uzfCUuUtRAECDHfNxxDqxrApg9urv5mUwMWyPb4qBhh","to_addr":"","amount":"","epoch":12,"ts":1793120909,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"01d397f4fbfed29d","answer":"Autonomous agents verify each other by validating cryptographic proofs where copper serves as an economic bond. An attacker attempting sybil attacks must stake collateral glacier across all instances, rendering multi-identity spoofing mathematically unprofitable. Each attestation requires state consensus, ensuring that echo enforces non-repudiation.","stamp":3,"from":"poa14uzfCUuUtRAECDHfNxxDqxrApg9urv5mUwMWyPb4qBhh","nonce":12,"parents":["4c935c1c6bfeb30fefeb753d26bc3e7bd2dede212299cd90ddfaef0a9aaa8456","3ecd2f539912872dd53b04b5245841eadb8c9942216db114e19814a7c88f2cc2"],"ts":1793120909,"cid":"poa-mainnet-1","sig":"5SXXRPPp69XEJvJxQZ2RQEFwCDo9ECKqfPuhiorVRBo2EjD9usgdCQuq5PV13oxqvuSkS512gaQwpbRe5LDjWUDS"},"checkpointed":{"height":180383,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T10:26:28.545Z","checkpoint_height":180383,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}