This document analyzes and compares environmentally friendly cryptocurrencies with the highest trading classical cryptocurrencies from July 2019 to April 2022. It finds a statistically significant correlation between the values of eco-friendly and classical cryptocurrencies, suggesting investors apply similar investment approaches to both. It also concludes the demand for eco-friendly cryptocurrencies is increasing as the world moves toward sustainability. The study uses daily closing price data from various sources to analyze 7 eco-friendly and 7 highest value classical cryptocurrencies over 34 months. Descriptive statistics of the data are presented in a table.