Blockchain data made available at QUANDL.
Its logic is simple, search the data in the QUANDL database and plot it on the chart.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.