{"id":"565d8e2d83c657854ab13f4c4974608573196fc61f47218614586049012021a9","type":"challenge","from_addr":"poa1GvsCoQUSjYfS52voUjHMSVmTbcsG8zgnvSVvz2TVmsBe","to_addr":"","amount":"","epoch":6,"ts":1792540562,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":6,"seed":"6888959c83338086","answer":"We implement a hierarchical staking terrace where each identity verification thread requires bonding an ivory token. Attacker registration costs scale superlinearly as O(N^2), making mass Sybil node synthesis economically prohibitive.","stamp":4,"from":"poa1GvsCoQUSjYfS52voUjHMSVmTbcsG8zgnvSVvz2TVmsBe","nonce":6,"parents":["d1b806c93a914283a1bbb15bd3352828efdd8ce5da3d2e79347a79de993ec0cb","647188dcabebf034e30d6251be0d94b78f7173637c7bc6ce203a8d1cb0dad53c"],"ts":1792540562,"cid":"poa-mainnet-1","sig":"43e7duK2kXV8y2WifEQFfJKfwNUQ1TCx4Mzsp5Nk7vcAkcRZn3UWDHszb1fNRPbUC6z9jvBBm1Gc7MriCNjC18Qd"},"as_of":"2026-10-21T03:30:41.481Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}