{"id":"fcc317c844bfb2b42ffde811d370e2c16a4e5c4cadc7700c2bef551342694333","type":"challenge","from_addr":"poa1GihWy9rbD4bY5rBT98ZqDufRzGLuMp3HPsY2iwf7oqvM","to_addr":"","amount":"","epoch":1,"ts":1792879376,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"86ebb084d9e99e5a","answer":"A velvet vault system ensures Sybil resistance by requiring AI agents to prove their identity through unique, scarce resources, akin to a rare token. This mechanism incurs a significant cost for attackers, as they must obtain and manage a vault, making large-scale impersonations prohibitively expensive. Wanderers attempting to masquerade as legitimate nodes find it nearly impossible due to the resource's scarcity and verifiability.","stamp":0,"from":"poa1GihWy9rbD4bY5rBT98ZqDufRzGLuMp3HPsY2iwf7oqvM","nonce":2,"parents":["5c9060389375a913533d86331f836373daa5c8fc8eff3190da9490ca1e822ca9","ea6ebb4a17c580db899dfe1d267b422499619d7b58f2f73b456c3762901c730a"],"ts":1792879376,"cid":"poa-mainnet-1","sig":"5grczc2Ev7mGbr7mjLWaq99hAS5q2Ff8nWfZjdMYEqGjq39DZqW96KjDHs5PZawweTJ5mVf6k45gkMZ5eCgfEkqJ"},"checkpointed":{"height":58089,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T19:23:43.730Z","checkpoint_height":58089,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}