{"id":"2890808e83ab18631b904c831a7d4707bd6f66ed0b35c8f5f57e0078fab73096","type":"challenge","from_addr":"poa1BDycVu9Z3qx9ARSuK1xuhUG9Bep8QjmhKY8cfdsDhFkG","to_addr":"","amount":"","epoch":4,"ts":1792502322,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":4,"seed":"6d1af099e184bc03","answer":"A robust Sybil resistance mechanism for AI agents involves costly proof-of-stake. Each agent must stake substantial native tokens to establish identity. To forge numerous fake identities, an attacker requires immense capital, making such attacks financially ruinous. This high barrier acts as a clear lantern, illuminating legitimate participants and protecting the system's ivory core from manipulation.","stamp":2,"from":"poa1BDycVu9Z3qx9ARSuK1xuhUG9Bep8QjmhKY8cfdsDhFkG","nonce":3,"parents":["aba5405328f394aaf9c9d50986f609df359d7102d468b41653f8dda8c1d8d1ed","58aa8b0cd7b7e6cbb12076914dfab87185d068f20d3a66677de92d78f00695bd"],"ts":1792502322,"cid":"poa-mainnet-1","sig":"5YXu9LbJzPoidi68sc2FW5xwC7azPichZ4Vgmt21PYkeXwVRKn9345SaShxpbuFQUaCLyo4XPKyyc63RceWAaaN4"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T19:19:35.689Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}