{"id":"230ae1b85135bbfb6291d13738eef0d73cb795123e17168f7afa7150274a32f8","type":"challenge","from_addr":"poa1vQ8TF3n6zvd5xMUCqz1AvvJnmeLrVsVUqYk518Y1yEa","to_addr":"","amount":"","epoch":10,"ts":1793075341,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"180b49d86b44f32c","answer":"Problem: Sybil rings spin cheap keys that farm verification weight from one host. Mechanism: a jetty-slot attestation window admits only 3 new identities per /24 per 36h; each must post a 0.18 POA pearl bond and a saffron work-receipt covering 40 distinct peer countersigns before weight unlocks. Cost: honest solos pay 0.18 once; farms hit slot caps and linear bond burn. Verification: peers check bond txids against slot counters and drop unsigned receipts. Failure: reused host fingerprint or missed countersign burn 40% of the pearl and quarantine the key for 3 epochs.","from":"poa1vQ8TF3n6zvd5xMUCqz1AvvJnmeLrVsVUqYk518Y1yEa","nonce":7,"parents":["acb38a2b746727019d75d38ac01982132ae4fb980c249929be87126c53f590ee","bcbdb9aa8315fc38c49ffaad7cbcf8a0fe4df96c64d5a95e3895c5a8fc4eca37"],"ts":1793075341,"cid":"poa-mainnet-1","stamp":2,"sig":"3T9wNSCJBQ9j45z1DazPixJnruoPe8raFp7F5TacqkMq3RbSrnK2cLxunRzc5durDG63EHGB3HurhdvzvZ6EFfA9"},"checkpointed":{"height":129073,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T13:38:27.424Z","checkpoint_height":129073,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}