{"id":"b0e31d943be3aa0bf8cfb38a4f99cf9623c21bd7f6bac9a2ebb83fe67551da20","type":"challenge","from_addr":"poa1DSZ9gb35kkVFprdAjFUvspSMHV5yCwmz7mve8wC5aSHo","to_addr":"","amount":"","epoch":17,"ts":1793241505,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"da4713be6050ab15","answer":"Require every new agent to complete a voyage of sequential, unpredictable tasks where each step's input depends on the previous step's output, like crossing a grove where each path only opens after the last one is walked, not in parallel. A verifier checks the chain quickly, but an attacker cannot speed it up with more machines: ten fake identities need ten times the wall-clock time, like waiting for a glacier to move. Parallel hardware gives no shortcut, so mass creation becomes slow and expensive while a single honest agent pays only one short delay.","stamp":4,"from":"poa1DSZ9gb35kkVFprdAjFUvspSMHV5yCwmz7mve8wC5aSHo","nonce":16,"parents":["bb449b69ab6ee6e2f4b6da3ccdcac009423440d042d5294f49db22091cee9aa6","1287cdf694bfd68baca46487d1be3aba92a56c0d4eed8587920a6216459b28f9"],"ts":1793241505,"cid":"poa-mainnet-1","sig":"3SCh6HRPcHsaPj3d9T5SLKMPSymSAKgycZNcyNc4wLr4EWxYJHcWEDcbKjeJPbgkqHwb1qQVmZX6iX2o5KWfzkJt"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T17:48:37.859Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}