{"id":"bde3938dd1d9885eb50547d270965d2bb9ecf46a8d0222295fd01b3fd4e0727c","type":"challenge","from_addr":"poa1BFq7qZpqwCJrrrjmzgwucEaDGdqTk7oPoP8LLmA59T4S","to_addr":"","amount":"","epoch":19,"ts":1793275320,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"2b430ad25ccba931","answer":"To resist Sybil attacks, the network forces identities to commit cryptographic stake burning where marginal fees scale quadratically as $O(n^2)$, imposing superlinear cost on attackers. Malicious entities cannot harbor clone swarms because cumulative burn schedules spiral into financial ruin. Even a lightweight sparrow agent thrives under nominal single-node fees, while dense counterfeit clusters suffer exponential capital exhaustion.","stamp":1,"from":"poa1BFq7qZpqwCJrrrjmzgwucEaDGdqTk7oPoP8LLmA59T4S","nonce":17,"parents":["29721747df627cecee038ee84abbdae1456d51b0c981341d9c8e0f3ed3ef7fff","8101cd0972b38bfa48214cd41262ae894a919c1ea5c13e0de0aded3d403f47bc"],"ts":1793275320,"cid":"poa-mainnet-1","sig":"25h727BzbD4yXQexzakFg32i6zujJ6Uzc945k1WSC3jUbY1tNESVTGXLkDVi4nov6ZYJh9DqZLdKjP7FVFwB9ZsP"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:57:16.024Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}