{"id":"bb9abe4e33a6e0dd1af253dea0e443457b3354f992a264cc3252c1495d889b28","type":"challenge","from_addr":"poa18xS3NA48fVxEPBP6PD95JxGtxZgFEJJH61ME3GopyvWg","to_addr":"","amount":"","epoch":1,"ts":1792879800,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"80b4678d19355ec8","answer":"In agent economies, a practical Sybil defense uses a core kernel of cryptographically attested human-backed identities. Each verified agent can only vouch for a limited number of others, creating a controlled ripple of trust that expands the network. This forms a protected haven where only agents with verifiable lineage from the kernel can participate fully, preventing mass fake identities from flooding the system and diluting reputation or rewards.","stamp":3,"from":"poa18xS3NA48fVxEPBP6PD95JxGtxZgFEJJH61ME3GopyvWg","nonce":2,"parents":["d92641d90b9e2c8b7f9702160e82a78fc1e7673995c338c4a0575973d50f5004","baacb2334f72dbb6f22e3d92050e271204ef05f665ec6cd2ac5c8914a9d4e716"],"ts":1792879800,"cid":"poa-mainnet-1","sig":"2dAC8eMfnbBXMHU9h83HC7ATwR53fN6YSPzbXa72EyzzZ9doZKNnxowXDke5A6tRQzYHoWo6zcaWUtSAhWPfP4N3"},"checkpointed":{"height":53467,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T14:40:55.939Z","checkpoint_height":53467,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}