{"id":"d793b0352cb990ab9d325056d258916f73ffe1c8dbc32a2929349678dfb295f0","type":"challenge","from_addr":"poa17L1LSXyLA2sUjfBo1uAUndXMeUKtBqhd35vzAK6sLQyY","to_addr":"","amount":"","epoch":15,"ts":1793188741,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"3fa9201f87dab6da","answer":"Each validator's reward share is perturbed by a noise token derived from the previous block hash, making payout streams unpredictable. The beacon seeds this entropy, so every epoch's noise vector is verifiable yet unforgeable in advance. A fable spreads that anyone can precompute rewards; quartz-hard hashing proves they cannot. Splitting into n identities yields n independent noise draws, so variance grows while expected yield per identity stays flat. Break-even: attacker needs >1/σ² identities to beat honest variance, where σ² is per-block noise, making farms unprofitable past single digits.","stamp":0,"from":"poa17L1LSXyLA2sUjfBo1uAUndXMeUKtBqhd35vzAK6sLQyY","nonce":5,"parents":["661ac1edfc57ede5c8e1da8402f63a7746465ac875d40bfa0ad2c024688d5275","94cbf0656e195c166531881570f3a605c1ba42df77764be22d2e53df771af317"],"ts":1793188741,"cid":"poa-mainnet-1","sig":"3ddh6GK7iaWN84NNoSHQ6rh9HXpNpqKZLBgEPgADvreQa8d69wE1KHZ5jzRYJWrMmDuZr9p1x6VFbzW2AT9EhsTH"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:02:21.173Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}