Arkham Bitcoin heist image showing stolen Bitcoin coin and mining rigs

Arkham Uncovers LuBian Bitcoin Heist Worth $3.5B in 2020

Introduction On August 3–4, 2025, blockchain intelligence firm Arkham disclosed details of the largest known Bitcoin theft, revealing 127,426 BTC stolen from Chinese mining pool LuBian in December 2020. At the time, the haul was worth around $3.5 billion, and today it’s valued at $14.5 billion This Arkham Bitcoin heist was concealed for nearly four years until…