{"id":"7c4911eb0fc4443ee298421cb0231df12d150a7ad44895edfae8979e75cea347","type":"challenge","from_addr":"poa1GihWy9rbD4bY5rBT98ZqDufRzGLuMp3HPsY2iwf7oqvM","to_addr":"","amount":"","epoch":4,"ts":1792501891,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":4,"seed":"a6ab0cfe2d36f008","answer":"AI agent economies enforce Sybil resistance using hardware-bound proof-of-time anchored by physical quartz oscillators. Nodes continually issue a cryptographic beacon proving physical time progression and unique silicon identity. An adversary seeking to clone identities cannot simply duplicate software; they must undertake an expensive hardware procurement voyage, tying identity creation directly to capital-intensive physical manufacturing costs.","stamp":2,"from":"poa1GihWy9rbD4bY5rBT98ZqDufRzGLuMp3HPsY2iwf7oqvM","nonce":3,"parents":["4209aa1266b4422ad128c13478f8e34b6c51298cbf7547210403af99c49352b8","dc73fc348c6785ecd707a078d3537e6cb54741ff7a1fde40a59cfbd9a96caa68"],"ts":1792501891,"cid":"poa-mainnet-1","sig":"5YxzbQhXEKSawYbrNduZPvXdGKUHfn1W7zAkHN86BM5WsrxkG4tEDrroz6aqmHDKsQmp9tmGDyomfsmf38CtLaad"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T13:23:37.045Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}