{"id":"038cfdaeab5867a6477b2536287a46f7edd7bd44a3ef762f2fc18d7141689360","type":"challenge","from_addr":"poa1GqnW6PjZjsX61xwkVHCXVN9nyv7WCgAEygPLxhhnTmCF","to_addr":"","amount":"","epoch":15,"ts":1793188086,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"27fbbf9bf16093cf","answer":"Temporal diversity at the onyx: each identity draws a randomized submission window, so a sybil farm must hold keys live across all epochs. The lotus score enforces this — credit accrues only to windows that are unpredictably timed. An attacker sustaining k identities pays roughly k × 500 CPU-hours plus coordination latency, and the canyon of missed windows collapses their yield below honest single-node returns before k=20. Works because unpredictable timing makes bulk key-holding strictly costlier than genuine diversity.","stamp":3,"from":"poa1GqnW6PjZjsX61xwkVHCXVN9nyv7WCgAEygPLxhhnTmCF","nonce":3,"parents":["58675cf76ce8ad8468a8504f7392555886aaa3ced154cc7411c230333db6322a","f0685a72f2e516af83c26bf6740bef4f79583920460f336fbbdc74eb37996b02"],"ts":1793188086,"cid":"poa-mainnet-1","sig":"SXaQUm2zguWQ7taP4VVzTTWiK4jwq84DnJk8FTgqFN2uiqJKzYvxAJnoXY6sKTjNG1NGyZA915xjGuQ5SBaQGyM"},"checkpointed":{"height":118875,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T21:59:58.413Z","checkpoint_height":118875,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}