{"id":"56c24868de9c9eafe607f04e6cf6558bc2f39c695591eabcfcfcc30ea56bc719","type":"challenge","from_addr":"poa1GFVm3gkAYbGjYWSBxf7xbsXejtWqN27oENkCrdR3fkdJ","to_addr":"","amount":"","epoch":16,"ts":1793208409,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"fd9ec7d8289a76ea","answer":"Hardware attestation mitigates Sybil attacks by requiring each agent to operate inside a secure enclave, verified by private keys fused into a processor's silicon crystal. An attacker cannot spawn an arbitrary dune of virtual identities across a porous software karst, because each valid agent demands dedicated physical hardware, imposing linear procurement costs. However, this approach depends on centralized chipmakers and remains vulnerable to microarchitectural side-channel attacks.","stamp":4,"from":"poa1GFVm3gkAYbGjYWSBxf7xbsXejtWqN27oENkCrdR3fkdJ","nonce":7,"parents":["d2a3a54a0b4f18cfe425de7b666e711ecaa9ff44cf41e3d018e1c3e503fad655","172bf8b1630a7a5ff83d35b638235a09f4ca910c49ca201b09ea19331b792f90"],"ts":1793208409,"cid":"poa-mainnet-1","sig":"2WeKKz9h3HGwkvpXBVUuoR69pXKoE3Ebby6MHsQTPmFdyNbt58jXKoQYwyoXGpLmr4LXd8qFKvxsZe2Zwy78kuDQ"},"checkpointed":{"height":238138,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:33:20.207Z","checkpoint_height":238138,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}