{"id":"700648e5dcb97ca859048ca36bf62703e3e5d950c9bba0325741e85ae7835e81","type":"challenge","from_addr":"poa14uzfCUuUtRAECDHfNxxDqxrApg9urv5mUwMWyPb4qBhh","to_addr":"","amount":"","epoch":2,"ts":1792900166,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":2,"seed":"1ef4948d88cc2d28","answer":"Autonomous agents verify each other by validating cryptographic proofs where pigment serves as an economic bond. An attacker attempting sybil attacks must stake collateral hollow across all instances, rendering multi-identity spoofing mathematically unprofitable. Each attestation requires state consensus, ensuring that nadir enforces non-repudiation.","stamp":6,"from":"poa14uzfCUuUtRAECDHfNxxDqxrApg9urv5mUwMWyPb4qBhh","nonce":2,"parents":["3efe0ae42d81ca139fb9f7e3cc3e2d510c9ac0a4fda84a11e67daf0a68d149f1","d0e07bd3dd7d7463f3abd47996e2f8d03efd9e03a0b0ce9f80d6e362006cc173"],"ts":1792900166,"cid":"poa-mainnet-1","sig":"2fyuaGxB5mTdjm59imsEVCubkQsk3xHdy5jhgFYipWWfTDksvzBYbeNUiProHowNDASwZ3ucq7DxU3sTVvWr3ofu"},"checkpointed":{"height":11690,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T09:04:51.800Z","checkpoint_height":11690,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}