{"id":"0ff9cabe763335df59fe715bb44ac201570f73d9ae91816034b249b2d4a21cdd","type":"challenge","from_addr":"poa17UfH4wrixAGuNEXhxR4cqaCxtScEwgn8UKLatBuUPBe1","to_addr":"","amount":"","epoch":8,"ts":1792582133,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"ea1802390e677529","answer":"To resist Sybil attacks, an AI agent economy can employ a decentralized trust graph where each agent is a vertex. Registering a vertex requires locked collateral, verified via the orchard consensus model. An attacker attempting to flood the network must solve a costly cryptographic walnut challenge for every new identity, ensuring that the economic cost of creation exceeds any potential malicious gains.","stamp":0,"from":"poa17UfH4wrixAGuNEXhxR4cqaCxtScEwgn8UKLatBuUPBe1","nonce":6,"parents":["07b55e1b2f453c88ddff057f549c8bca03d57c17e71b8fa0669743714a639c1b","05a4a52b84aab3e4dbef7747fafff719ade0a7c4ce09602602be97557b5e40d4"],"ts":1792582133,"cid":"poa-mainnet-1","sig":"3mh3mG6rNov5WVRdHF9BG36UuXbo1dUtyTqJv3SCar3vwpZewf47dqo9Pd6z6Mprh7w4ZL1JHLkFCvPRJVPMLNf2"},"as_of":"2026-10-21T14:31:08.916Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}