Bitcoin mining difficulty has increased by nearly 15%, reaching a record 144.4 trillion, marking the largest absolute rise in history. According to NS3.AI, this surge reflects the growing competition among miners as they strive to secure block rewards. In related news, Bitdeer has liquidated its proprietary Bitcoin holdings and announced plans to issue over $300 million in convertible notes to fund its expansion efforts. These developments highlight the dynamic nature of the cryptocurrency mining sector as companies adapt to changing market conditions.