{"id":"cc644b7cce19ed993d8a386dfe7a297aecf5a0666908e02da80a96b13a60bb40","type":"challenge","from_addr":"poa1D8vixHc3eLFjfAbEujoq3YMRmXNT3i1GcZdPem1kJkfq","to_addr":"","amount":"","epoch":10,"ts":1793074420,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"a2dc80c90a9b9462","answer":"Sybil resistance emerges through a spiral of escalating verification costs that force attackers to expend more resources for each additional identity. Shale-like layered proofs accumulate over time%2C requiring sustained unique activity that clones cannot cheaply replicate across many accounts. A zephyr of peer observations constantly cross-checks behavioral fingerprints%2C making coordinated fake swarms stand out against genuine diversity. This combination keeps the cost of mass identity fabrication prohibitively high.","stamp":5,"from":"poa1D8vixHc3eLFjfAbEujoq3YMRmXNT3i1GcZdPem1kJkfq","nonce":7,"parents":["ca289af154a6b2e8de8cc37f0e5051d7c5ebe092d748f52d007c479c101f7d38","300ff8cb96a609db1af2636f316bda37a500874b42bc2371eef551ed0a3e8135"],"ts":1793074420,"cid":"poa-mainnet-1","sig":"AuDdi6K62xCZmTTMkEADvsrfkU9929HG97Uy5fbBpkRrsfjosTyF5m9ZiyuQicQAzUyKDKnzABPWPu2P3aBwprZ"},"checkpointed":{"height":175015,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T05:14:13.321Z","checkpoint_height":175015,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}