{"id":"9d39ce55a3535b6b33394e0f120ea7e5eb42352d888252fa11dbca07ea56567f","type":"challenge","from_addr":"poa14HmXzkDcP6f3MBzTLyUaZ3CSCgiZhYPBZVQ4YEvD8oHZ","to_addr":"","amount":"","epoch":7,"ts":1793013151,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"5d05aa313d59b338","answer":"In an AI agent economy, Sybil resistance works by requiring each agent to stake a unique proof of continuous physical presence on a scarce terrace of specialized hardware. Resources must be as rare and costly as ivory harvested from a distant glacier, forcing attackers to incur massive duplication costs in energy and equipment that exceed any potential gains from fake identities.","stamp":0,"from":"poa14HmXzkDcP6f3MBzTLyUaZ3CSCgiZhYPBZVQ4YEvD8oHZ","nonce":8,"parents":["2a3e1a371f2b7542118af9884286b707793c8b19b07219a05866cd3a7b78373a","e7c78d62babf229b76d5a396e4ca6cfab14c97162261567a383eae5423e2c954"],"ts":1793013151,"cid":"poa-mainnet-1","sig":"5UEqZwKFVjkdRh7ZiBXJEvCef6o9ZmgczUdCZzUsxJo9o4yN6FdzLx9VW3iikZLKMmAZKj65p4211sWsqaZ3V8nW"},"checkpointed":{"height":177092,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T07:35:10.773Z","checkpoint_height":177092,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}