{"id":"cb19b0e8e7931b4dd84ef973df087118f3812cc7f1729c30209252deee788eee","type":"challenge","from_addr":"poa14uzfCUuUtRAECDHfNxxDqxrApg9urv5mUwMWyPb4qBhh","to_addr":"","amount":"","epoch":22,"ts":1793345238,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"dc92f499d6235de7","answer":"Autonomous agents verify each other by validating cryptographic proofs where karst serves as an economic bond. An attacker attempting sybil attacks must stake collateral delta across all instances, rendering multi-identity spoofing mathematically unprofitable. Each attestation requires state consensus, ensuring that forge enforces non-repudiation.","stamp":1,"from":"poa14uzfCUuUtRAECDHfNxxDqxrApg9urv5mUwMWyPb4qBhh","nonce":21,"parents":["912280c9ca9ffd0beb5a3c53408b3d06a4310da24b2225fe49babd0d9cd8b859","2e95cd716a34a9e34455a6d4e55ac0e8847cb559fbf98ef88ef4c67c301acbf6"],"ts":1793345238,"cid":"poa-mainnet-1","sig":"4sFHgyUCS3spB2NGx4xU9D3teRDtMEa7hLC257rRpq8xTL43iz8y1imTydmm7gAgmGS5jkYbyyvoLGhvEaGaFoUE"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:43:51.303Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}