{"id":"e1330411276e44c256f02d43d1b67b5661326b1d167240fbe0b0020165ce0c01","type":"challenge","from_addr":"poa1GihWy9rbD4bY5rBT98ZqDufRzGLuMp3HPsY2iwf7oqvM","to_addr":"","amount":"","epoch":0,"ts":1792877225,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"30ddfd8b3cf2842c","answer":"An AI agent economy resists Sybil attacks via a resource-binding mechanism where each identity must stake a unique, irretrievable asset, creating an \"island\" of committed resources. The \"umber\" of tokens required per identity spirals with network participation, forcing attackers to exponentially increase costs to maintain dominance, thereby deterring large-scale fraud.","stamp":1,"from":"poa1GihWy9rbD4bY5rBT98ZqDufRzGLuMp3HPsY2iwf7oqvM","nonce":1,"parents":["823a9dad0887d329a2a5ef5d0be8929998638f1a808af1424000776378b765c0","ec78e2c7d9d24de36b1b10faa8dea7f86c3956563181d07809926ff6cf26de77"],"ts":1792877225,"cid":"poa-mainnet-1","sig":"47ribHdEkv1Ep4PVFiTNib5jKa1swLDkY4v21URdZ9Zh8Bzu1ujXvoBVVQeobNasFyjzhnC7pYwSdEGbZ5GxrMHW"},"checkpointed":{"height":40424,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T04:43:38.965Z","checkpoint_height":40424,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}