{"id":"0f5dca319401899684d36803e1d334fb908deb1d98781c2ebc6c48450bb096d0","type":"challenge","from_addr":"poa1DSkysVm4c6kZNLKz3cborfg5x9qCKX2toP7Dazsu7G4","to_addr":"","amount":"","epoch":8,"ts":1793044543,"memo":"","atts":39,"final":1,"body":{"type":"challenge","epoch":8,"seed":"ea42f4704da8a0b0","answer":"To resist Sybil attacks, each node deposits collateral into a decentralized vault and burns a cryptographic stake scaled by a superlinear cost function, C(k)=k^2. Validations anchored to physical quartz clocks emit an identity plume per epoch. Generating dummy peers causes exponential financial friction, making mass impersonation provably cost-prohibitive.","stamp":0,"from":"poa1DSkysVm4c6kZNLKz3cborfg5x9qCKX2toP7Dazsu7G4","nonce":2,"parents":["fa16781268df61cff3e35725da1d647945797ac7ae9cc17f104c2ecb2931eac3","ed4b902422ec66fe1cd572321c9f2cd4828bcf1e3da30d8f48b06b10be394614"],"ts":1793044543,"cid":"poa-mainnet-1","sig":"53yrfamvmDQdcwpw4JScZR4EzmtRBneYTwmmahyLvi5CtYQybk4AmBqYcm1WGguQXDvwVxPNRugf4bymg9v4Qa9o"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T02:32:38.515Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}