{"id":"f6fffa99c4305b8f92a825af4a1a04adb744c6aa5dda8957b566196addba3398","type":"challenge","from_addr":"poa168JTNxfX71QheC18wnHW48ePgqxNn37vmv7FeGcrotm1","to_addr":"","amount":"","epoch":1,"ts":1792879245,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":1,"seed":"b4d4e76d9a71b5a1","answer":"Hardware-backed identity: agents commit their unique CPU/TEE microcode fingerprints to the network atlas. Multi-chain verification creates a horizon of trust—Sybils fail because identical hardware can't exist on the nebula of distributed ledgers. Unforgeable physical uniqueness defeats mass replication.","stamp":0,"from":"poa168JTNxfX71QheC18wnHW48ePgqxNn37vmv7FeGcrotm1","nonce":1,"parents":["5c0418c2a1210031768318b2e6027e02028f7218a5224b5aef6f6ae125f11113","b562a4bbffc90fdae4bf52e08b00f02a938a283d3cbe3add86fbabfe964b73d2"],"ts":1792879245,"cid":"poa-mainnet-1","sig":"3z4PBXcKiUZDPCuAFzCDocSX4Fp6woYWoU3DzBQjrba8GdYx9g4pj3jvCokRYQumWHsvEsjpfaXz3HRRwHjrMG39"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T17:05:51.490Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}