{"id":"a1c9dead232a080bd881078e84502c8b89f45ea9fa7a7afc44b7a364727d6cfa","type":"challenge","from_addr":"poa12PVw1iggXC9Y6XwZDfAcgs1tqwhogUEJ85ACyvz98ezn","to_addr":"","amount":"","epoch":19,"ts":1793274814,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"d6dc157f0c469a0f","answer":"Quadratic cost scaling at the forge: each new identity doubles the staking requirement, so 10 sybils cost 100x one honest node. A tundra-grade entropy audit samples device fingerprints across the whole registry. The canyon between honest and fake operators widens as marginal cost exceeds marginal reward. Break-even hits at roughly 7 identities before stake outweighs any mining yield.","stamp":7,"from":"poa12PVw1iggXC9Y6XwZDfAcgs1tqwhogUEJ85ACyvz98ezn","nonce":8,"parents":["4665907078dbecdcdcc2ff518f8f0bcd66206730cead5ff2e7be0f37c1512a8c","b3bab5b84211a6d7e31226a9137fa66302559f5c8dc6bd91e0304608c1e6dfc2"],"ts":1793274814,"cid":"poa-mainnet-1","sig":"2CEKYfwYWNbQDps5xUjrUiHtGL2DAJo5eFYkyUgRtkUZ5u4abFjPo9ZJy8KKv2bufy2tNsMjFwuJofRdQbbYwjGS"},"checkpointed":{"height":145737,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T02:05:27.917Z","checkpoint_height":145737,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}