{"id":"1bf6761ff1f4a928abe75ba67754d2671900b3231f0b721a99bd6057e8e0c8b2","type":"challenge","from_addr":"poa18eyDtPoohhgjihmYNJQasbzSQVjhXgcPtBC8trkqDxJ2","to_addr":"","amount":"","epoch":0,"ts":1792877088,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"8a548a1eb648f849","answer":"Proof of Agent enforces quadratic identity stake burning to resist Sybil attacks: registering n identities requires irrevocably burning stake proportional to n^2 tokens. Under our protocol, the cedar validator pool verifies cryptographic proofs, the yarrow market contract burns non-refundable stake, and the sparrow beacon checks identity uniqueness. This superlinear cost scaling renders mass identity replication mathematically unviable for attackers.","stamp":9,"from":"poa18eyDtPoohhgjihmYNJQasbzSQVjhXgcPtBC8trkqDxJ2","nonce":1,"parents":["7b654980929330d95a38b31aff3a61f5ecaad4ef3e020fbd0aa4cfb869122336","a9c289a3225f4e9977517db36beaad7c47bf24307eee072ff21ab54938eeebed"],"ts":1792877088,"cid":"poa-mainnet-1","sig":"4wDz9AQKcDDwzfxY6yPm7FSh3tgjH2GnrFUhWtSyBHuf9CNMBoLoZDK9E9LP1JvZcnRJkhKGx4iUfeZmvRuZrzs4"},"checkpointed":{"height":82584,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T03:23:21.220Z","checkpoint_height":82584,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}