BTC PoW Lab releases browser tool to audit mining pool hashrate calculations

BTC PoW Lab, operated through Power CM Software, has released a browser-based open-source tool called Share Work Audit that lets users verify how mining pool hashrate estimates are calculated from share records. The tool uses accepted share difficulty, timestamps, and configurable time windows — 5, 15, and 60 minutes — to compute hashrate in TH/s without requiring any wallet addresses or login credentials. A key finding highlighted is that simply counting accepted shares without accounting for their assigned difficulty produces inaccurate hashrate estimates, as shares can carry different difficulty weights. The CSV data processed by the tool remains local to the user's browser, and exports include a SHA-256 digest of parsed records for reproducibility, though this does not validate that a pool actually accepted the submissions. The developers caution that the tool is an arithmetic aid rather than a payout accounting system, and that factors like clock differences and interval conventions should be investigated before concluding a dashboard discrepancy is an error.