Big 9 Real volume exchanges - On Balance Volume

Here is an On Balance Volume indicator using only volume data from the 9 biggest exchanges trading BTC/USD or BTC/USDT. These 9 exchanges were chosen based on the report by Bitwise Invest stating that 95% of the volume on CoinMarketCap is fake. On these 9 exchanges, however, volume data appears to be reliable. Please note BitFlyer was not included because it does not trade in USD. Please note also that data on all 9 exchanges is only available from August 2017. A separate volume indicator indicator is available at
Anyone is welcome to share and modify.

- stargazer