Cumulative work
Total proof of work accumulated since genesis.
The vertical axis is logarithmic: this series grows by several orders of magnitude, and on a linear axis the early years would be a flat line along the bottom. A straight line here means a constant growth rate.
The total difficulty recorded in the last block of each week, read straight from the header chain. It only ever rises; the interesting feature is the slope, which is the hashrate chart above.
Latest: 6.255114993723405e+28 total difficulty in the week of 2 Nov 2026. 462 weekly observations.