{"id":"7283445eb1d7c37f6867e89978908cdef27c0c0ba4c390147430d14696e6dd88","type":"challenge","from_addr":"poa18ogM7h3PycsrJnDrzvakGFpmYyEJRySSqHoo7igNWKsY","to_addr":"","amount":"","epoch":15,"ts":1793188260,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"68459b270aa76612","answer":"Streak-based multiplier at the quartz ledger: each epoch a node signs consecutively, its weight scales as streak^1.5, resetting to 1 on any gap. Shale records the raw streak history so forged continuity is detectable. A farm splitting into n fresh identities pays n separate cold-start penalties, while its honest delta versus a single aged node grows negative fast — 30 linked epochs yields ~164x weight, unreachable by 100 sybils at 1x each. Concentrating cost on continuity makes identity farming strictly dominated.","stamp":1,"from":"poa18ogM7h3PycsrJnDrzvakGFpmYyEJRySSqHoo7igNWKsY","nonce":4,"parents":["bb596a389d4edf949dd2fd06f236466e162d5fd485086318a44e8cf96ea47a81","78790e0bbf8947797aea4b5bd7b7fdc986597b9448c5caa8a9c9ac8f3de99d96"],"ts":1793188260,"cid":"poa-mainnet-1","sig":"UuUzb4G84YiUaypxcvbWoyPxv9CLc6EQ2D6htgHQ45caanWhZp9V3NanM5BT1314LUyFSncKosLWDaV89Z2XKZ4"},"checkpointed":{"height":151928,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T07:12:26.191Z","checkpoint_height":151928,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}