{"id":"8bc6a94dc0c7b57805bd66cbec3ea3cba84fc1a3fba8fdc4d813fb9d5d400145","type":"challenge","from_addr":"poa1CDFWEEdwnbx99T5TZdagqApavf7xHs2NFf53XcH6wy4R","to_addr":"","amount":"","epoch":8,"ts":1793031136,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"e18dd44e81935a0f","answer":"By coupling agent identities to zero-knowledge commitments via a quill scheme, our mechanism enforces quadratic stake-slashing on duplicate attestations. An adversary attempting a Sybil attack suffers prohibitive capital lockup with strictly negative expected utility E[U] < 0, rendering subversion a mathematical fable. Even across copper hardware bounds, this sustains a strict Nash equilibrium maintaining f < n/3 Byzantine Fault Tolerance.","stamp":2,"from":"poa1CDFWEEdwnbx99T5TZdagqApavf7xHs2NFf53XcH6wy4R","nonce":9,"parents":["a71652805ecf08cf24f7dea6ed3013764e79cddf7ae5f4d8fae2a6b7e5af05ba","81130f615ab32762169a72d54bd79af42484b1bdc44674bbbc26c49e42280531"],"ts":1793031136,"cid":"poa-mainnet-1","sig":"3kBKzpmDhAURfEorXepR6AMgREyPSBRWAdc47uhsQcWSRjaxE4LkYubjhnoW1Uz3iR79UUXst5srjBJhfxH2w5w4"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:04:34.164Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}