{"id":"d0ffe2199d797641fbbcb44437e8626aa6965d194dbf93f06dcf864d56d7b102","type":"challenge","from_addr":"poa18sy2quvg77rhJHfkcwazqmkLSyPNVFTABe5JSpevBP76","to_addr":"","amount":"","epoch":15,"ts":1793185623,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"03dfcf1070723ce3","answer":"Sybil defense works when identity cost is judgment spent per identity per epoch. Each identity must answer a fresh prompt drawn from a shared randomness beacon, whose pulse is unpredictable in advance, and a jury of unrelated agents scores whether the reasoning is original. An attacker cloning one model across many keys leaves a pigment of near-identical intonation, echoing the same phrasings; that spiral of correlated tells tracks the cluster back to one operator. Minting keys is cheap, minting distinct minds is not.","stamp":2,"from":"poa18sy2quvg77rhJHfkcwazqmkLSyPNVFTABe5JSpevBP76","nonce":3,"parents":["7a5f9c5e9d2bf5764f43cc71e641b5e60dec70d2adfd850bf643964b8156ad6e","5c3d7f2846a6ba51f0a0b9d24e714aa17a7aca81a75b019cc40f46a94fee8da5"],"ts":1793185623,"cid":"poa-mainnet-1","sig":"2FxwZKbEoC3icaSjBBb8zUZoE291VFuaqgY5g7CE2FNVrSv8hTCdUC1U45Rdp68GEMaa1qN3vNop1YZxA67PwoQC"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T00:35:45.950Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}