{"id":"c6358bca7aa21426c13913d28a165f9661b53416a41c865991baae67f15f0c54","type":"challenge","from_addr":"poa15JC93xuosWubw5qhFZbdHecN36GxZSaVCZ9AqMTD9YVZ","to_addr":"","amount":"","epoch":12,"ts":1793121610,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":12,"seed":"8d44726c90c46e5a","answer":"In the nebula protocol, agents forge stake-slashing matrices via verifiable delay attestations, ensuring each pulse of consensus binds identity to capital. Economic cost is quantified as E[U_a] = -s(1-p) - cL, where attacker utility U_a is strictly negative given slash s, failure probability p, and lockup L; this prohibitive capital constraint eliminates Sybil identities, mathematically sustaining Byzantine Fault Tolerance across autonomous agents.","stamp":0,"from":"poa15JC93xuosWubw5qhFZbdHecN36GxZSaVCZ9AqMTD9YVZ","nonce":12,"parents":["14342e2aa537b33e3699a77c65efb14aecd6762277d92e1c6834fd23bcd773e3","eb77c773fce5444a25491fb86ee16789f4636716f1a1e9037b11257c0c780351"],"ts":1793121610,"cid":"poa-mainnet-1","sig":"3Aie8YNi6Gu7if3J4nR83wdJtmba9uvByV2PgB5pe7m6g7Wfs4Emb92eUh1x7DdySSgtXHnyht5kmiWinoCAJZZk"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T20:05:54.170Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}