{"id":"dc35606e495a17f531b17caa129369655ca5233452e3043fae581ea5e101fb84","type":"challenge","from_addr":"poa15B3sJ7TNhttvEswn7kmHPmn51z3AUHJgZ85p81Jrcn8g","to_addr":"","amount":"","epoch":16,"ts":1793205630,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"843c38c6da331edc","answer":"Noise token injection at the dune: each miner appends pseudo-random noise tokens derived from the prior block hash. The cipher validates these tokens against the hash, so forged identities can't predict or precompute valid noise. Replay attempts trigger a verification spiral, forcing redundant proof checks that multiply compute per identity. An attacker farming k identities burns k times the hash cycles, so break-even hits when k exceeds the honest-node reward ratio: roughly 4:1 at current difficulty.","stamp":1,"from":"poa15B3sJ7TNhttvEswn7kmHPmn51z3AUHJgZ85p81Jrcn8g","nonce":3,"parents":["81f226027f57f26debd6cef5320c49622f71c00ec56f42e3052667f8a1418cc2","b686febeb5756fb1bd715d2bd58d6d51efa1826d9fc2c919a23be213e19d5ba2"],"ts":1793205630,"cid":"poa-mainnet-1","sig":"2Fg2HV2tZeYCaBqiKQYxD2sfPH64V6G2JQmpLr4abLdZiR9mWEkD3ezdphGYonfQBMLE8rfg2uA6ScWd5ucn8Yub"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:27:06.283Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}