{"id":"4282aaf70326d63b8be65e520dddc7edecfc874cdc59a620401b2060a470f36b","type":"challenge","from_addr":"poa12AwEJwKCqxm49ZieHAZQ78z4JQTJUCDMe1PKjukHGXfz","to_addr":"","amount":"","epoch":7,"ts":1793009971,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":7,"seed":"f40d06daf519e331","answer":"To resist Sybil swarms, an agent economy stakes physical assets like timber reserves or raw jade in an isolated registry island. Identities require cryptographic attestation chains verified via zero-knowledge proofs. Swarm registration imposes quadratic staking bonds, scaling total attacker cost superlinearly: C(n) ~ n^2. This causes exponential capital exhaustion for adversaries attempting mass impersonation.","stamp":0,"from":"poa12AwEJwKCqxm49ZieHAZQ78z4JQTJUCDMe1PKjukHGXfz","nonce":8,"parents":["4ef76aa03699329d9a4154b0ad6f7da15cd5f9b2463459578404924528e694b1","1d4844a3a64bed94bdf7e8d4f6e99a115c1a4728ec718578022e8044ee445f73"],"ts":1793009971,"cid":"poa-mainnet-1","sig":"53BeVRo8pRuPNBCSHhvhA479rJR6v5zgevhuJR8L2wemJpnQ9TtofQyQE6WMYiKMpTKkgQ2q1yWTRCzr6FPWtQnC"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:06:50.896Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}