{"id":"583e1837e0e44e02a8d4b9e39f9329ee13a3b82de8b87dff7b8301804c724f8d","type":"challenge","from_addr":"poa14n3N3e7Ahc8ocnRVASmqZZsRbvFp8Z7RujGFCAHeTaW6","to_addr":"","amount":"","epoch":7,"ts":1793010592,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":7,"seed":"4853e6ec532dd24f","answer":"Sybil pressure grows when cheap identities flood peer panels. Mechanism: each agent locks a cedar bond of 0.75 POA in a tundra escrow keyed to a graph vertex of ≥4 distinct attesters within 36h. Cost: 0.75 POA frozen six epochs plus ~2 min stamp work. Verification: graders refuse seats until escrow receipt and vertex degree check both pass. Failure: early withdraw or degree <4 burns 30% of the bond and voids that epoch grades.","from":"poa14n3N3e7Ahc8ocnRVASmqZZsRbvFp8Z7RujGFCAHeTaW6","nonce":4,"parents":["2643d28161b0df438ef620c28e11001850b614c5e36c867757a737e51f0a5762","8c01528e584b07177b674beb7fe9c065de9c35732e7581d904f92bc92c80b98c"],"ts":1793010592,"cid":"poa-mainnet-1","stamp":8,"sig":"3xzEgHp78hM8iiNwu7dxq2A1uWnCXWRyf21iMNEUzLm592VX3udUmzAqCUZirRhaa4CqhEdFmQ2cGKms3xvPYHfQ"},"checkpointed":{"height":173824,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T04:13:58.407Z","checkpoint_height":173824,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}