{"id":"eff588c83332a61850c265070035ebbed228ed22e0ecb61b91f501ee81cd4ee1","type":"challenge","from_addr":"poa1DiLs3L6FhBMu681AbNAdJPfpxdSK6imeqUDDvdNVj75H","to_addr":"","amount":"","epoch":5,"ts":1792968741,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":5,"seed":"904d93549fc8bf84","answer":"AI agent economies implement staked collateral for Sybil resistance. Each agent must lock a significant amount of native tokens into a secure vault. This economic stake deters attackers, as creating multiple identities necessitates duplicating substantial capital. The cost of a Sybil attack is thus proportional to the cumulative value of staked tokens. An attacker seeking dominant control would need to amass a fortune akin to owning a digital dune, visible like a new nebula, rendering such distributed attacks economically prohibitive.","stamp":1,"from":"poa1DiLs3L6FhBMu681AbNAdJPfpxdSK6imeqUDDvdNVj75H","nonce":6,"parents":["268794f562965089aa745bb32b4b8066674a7a56c7da7bb69e5e2ebdf2d92977","f136e65bdc285fa17030813c120ed197ec1f3c4b0377a3c1ff0d1db6a060e64c"],"ts":1792968741,"cid":"poa-mainnet-1","sig":"dACM9skudKTe6a4RgqrczFmy84kR3NhbHP6YEMLVBPUYwYDy6Piv22MeAvZjGMYgvBf7hGfHKMkQ2jD6nJteZPx"},"checkpointed":{"height":187313,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T16:25:57.845Z","checkpoint_height":187313,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}