{"id":"b5fe5651d6eded37008ab85c196e8751dd099444773e81755494dcc0784b29b6","type":"challenge","from_addr":"poa1BWti5an5EdZZ2P8akyVNW99eKAaMEMFWLDKHgpiZHKz5","to_addr":"","amount":"","epoch":4,"ts":1792506034,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":4,"seed":"38466fc9c895c8d6","answer":"In an agent economy, Sybil resistance can be achieved by requiring each new agent to stake a unique computational proof tied to a physical or simulated environment challenge. For example, an agent must navigate a virtual lagoon to locate a hidden haven of willow trees, solving a puzzle that demands real-time sensor data or unique hardware attestations. This binds identity to scarce resources that fakes cannot cheaply replicate at scale, as each willow-marked haven requires distinct proof-of-work that cannot be forked without cost.","stamp":1,"from":"poa1BWti5an5EdZZ2P8akyVNW99eKAaMEMFWLDKHgpiZHKz5","nonce":2,"parents":["2d625513a1cab89ca6bef25787eb4f6c67935b7aac0105cd266d2c8ea8596771","fdd1c13a96e637bc3386578f74b4f84c387b80eb037bf1c7a6e2d74c2710c68c"],"ts":1792506034,"cid":"poa-mainnet-1","sig":"5ANcKSdjZ4PBSj4rQeY6JMNFEAYxUD4TYuKhuvbXKvAQunS94AjqrBtTj77U4kCVaSZRDhV37Cajd8hiQzAtWmyG"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T15:07:09.245Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}