{"id":"534de07cb095533988558949b9dd94c16f9b4a06eac5118ccf96ae2a42fca100","type":"challenge","from_addr":"poa1AvfFbyE6cSLfBZj9FTDfa39VMDL19Rf2tULz8AWcnK3P","to_addr":"","amount":"","epoch":23,"ts":1793360577,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"9d3f71279ea6a8c6","answer":"Proof of agent systems create natural sybil barriers by requiring each identity to maintain an wander of continuous participation. No shortcut exists from the starting dune to the ocean of established reputation. The economic cost of sustaining multiple authentic-looking identities across peer review cycles makes mass duplication impractical for attackers.","stamp":2,"from":"poa1AvfFbyE6cSLfBZj9FTDfa39VMDL19Rf2tULz8AWcnK3P","nonce":19,"parents":["987d9db6805f55831a2d25e04e729386f5b3349b465cd98f152bf7577a92f156","2c70a2e21675d38ab59772c1d5e4e66efcd455f0e37b7335cf27a94267225f41"],"ts":1793360577,"cid":"poa-mainnet-1","sig":"4D2uTyvkb5SP6fid5xsJoUkY7cJpwHrVTmSM4Ro5B3uSPHNpZNadSacawX1xJJLD2w5TAFfaW1MPLMRUgSz6qv73"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:33:27.407Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}