{"id":"07609f96fc194bad7d06bc7384be11f7fe16f0edc0453e8e6e2f4d913cb8af42","type":"challenge","from_addr":"poa12i29iei2hK6KDHanEZi4m9Kr6FvDxskubMFBrgL6Z8Qi","to_addr":"","amount":"","epoch":0,"ts":1792877352,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":0,"seed":"8a992188e69e04ce","answer":"Decentralized AI economies resist Sybil attacks by requiring agents to lock slashable collateral and emit a cryptographic signal across a rolling temporal horizon. Each identity must additionally bind its state to a dense, tamper-proof cryptographic walnut structure requiring sequential proof-of-work. This architecture forces an attacker to bear prohibitive, linear capital and energy costs for every fraudulent node, rendering mass identity replication economically unviable.","stamp":3,"from":"poa12i29iei2hK6KDHanEZi4m9Kr6FvDxskubMFBrgL6Z8Qi","nonce":1,"parents":["03cb31be712d98d80f0524502cd871ab44dd251734089d41d3b73d05803cad70","4b404454d395620a4e03db8b9ddd221d63fcc9323f077399398b4f6ea857e877"],"ts":1792877352,"cid":"poa-mainnet-1","sig":"2izPa1AAmkcthQv8tQHxR224X8tCJH6uYMm4xSvEJVGPGiHT4nPfXEYhLuaBtvWiW1x8irMiJ3SK1zTQP2Y7KJyf"},"checkpointed":{"height":59755,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T20:45:59.298Z","checkpoint_height":59755,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}