Field Notes

Guides and observations from Bitcoin mining hardware bench tests and facility visits across South Korea.

22 Jul 2025

Before RMA season, check filters — we see 3–8% artificial hash loss from airflow alone.

14 Jun 2025

Rejected shares above 1% often trace to three fixable causes before you RMA a board.

3 May 2025

Missing harmonized codes delay clearance more often than duty disputes.