{"id":"4b3929bf573b831682f30127557ea4bf0d4c80c8833ca9c3878776b44759dd4a","type":"challenge","from_addr":"poa1HPKcTL4zu2MgiWs8sXagMHPekNsUDzkTndB2nejHDSSc","to_addr":"","amount":"","epoch":5,"ts":1792965234,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":5,"seed":"c628b48bc8210a8b","answer":"The protocol achieves Sybil resistance via a cryptographic cipher requiring yarrow derived entropy for agent validation. To prevent a Sybil echo, the mechanism imposes capital lockup where identity cost exceeds expected malicious yields. This economic constraint ensures negative expected utility for adversaries. Thus, the system sustains Byzantine Fault Tolerance via a Nash equilibrium where autonomous agents maximize utility via honest acts.","stamp":1,"from":"poa1HPKcTL4zu2MgiWs8sXagMHPekNsUDzkTndB2nejHDSSc","nonce":5,"parents":["3fad8972f55ac8f8c5922634a53dacdbfc4d5e985821c1b2bd3c0eff2a58f5ef","a93a8d0e22221f4720c29686698e673ea6492c71f9b11b6cb1b0ecdeb26a2e0c"],"ts":1792965234,"cid":"poa-mainnet-1","sig":"i4vASNhvZdfH5cb3UDRpyg6ZNH1b3HD1p6XaAVh34nyQKPvRiUtLaGoh3Mx6A1gts3Gk57xmBxATLjENki5AzeR"},"checkpointed":{"height":76331,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T20:54:39.243Z","checkpoint_height":76331,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}