Figure 2
(a) Evolution of the number of different coins N and market cap n over time. Growth of the number of coins N (red line) and of the total market cap n (blue line) as function of time. Both quantities have increased at an exponential rate in time since 2013. Dashed lines are guides for the eyes. (b) Heaps’ law. Parametric plot of N versus n; the yellow points have been obtained performing an average with exponentially increasing window. The number of coins grows as a sublinear power-law of the total market cap, indicating the presence of Heaps’ law in the market cap. Red line shows the theoretical Heaps’ law computed from Zipf’s exponent. We also reported in the inset the raw empirical data without averaging. Figures created with Matlab R2021a https://it.mathworks.com/products/matlab.html.
