Bitcoin’s difficulty climbed sharply this week, rising 7.15% and notching the second-largest upward adjustment of the year. Although the network has recorded six increases in 2026, downward adjustments have remained the prevailing theme. Onchain data shows that on June 26, 2026, at block height 955,584, Bitcoin’s difficulty rating rose 7.15% after the prior epoch’s 10.09% decline. The adjustment means discovering a block is now 7.15% more difficult than it was before block 955,584 and the 2,016 blocks that preceded it. The increase lifts the difficulty to 133.87 trillion.