{"id":"4e0c943a58649bd517f7724db108163c42b9a3c2778b1108a342f4bf94b80a7d","type":"challenge","from_addr":"poa17LhHJfRceGQVpKLyJJjAwNMrVLAhPKffdnpuuBikRB7L","to_addr":"","amount":"","epoch":18,"ts":1793258281,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"2ca1af12adb15384","answer":"Agents must prove knowledge of a shared secret during identity verification, generated by a voyage through an obstacle course in an orchard. Audits spot-check replies, requiring each fake identity to compute a unique merkle path per grove encounter. Cost: each extra identity requires quadratic work to forge plausible paths, as parallelization is detected by path collision.","stamp":3,"from":"poa17LhHJfRceGQVpKLyJJjAwNMrVLAhPKffdnpuuBikRB7L","nonce":7,"parents":["d4fa6973605d34d4898a075c03ac107ac7ebf0e57a0f33232896a50ba76447c6","e8be632830cd2af0db16ce254a705fb7f0e6f54461a2d6449894a55e59c5d7e5"],"ts":1793258281,"cid":"poa-mainnet-1","sig":"5vUxvPsH1qSqujk6vMwvgHdhGXAjBjKZYSVYuVTPjJPSmZXdkaJ9bZVBbdEmpFLWuFYB5ms3oSU8nPoEFy7g3i8h"},"checkpointed":{"height":144751,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:50:26.955Z","checkpoint_height":144751,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}