If you want a steady income with arguably a lesser risk profile why not simply invest in low risk stock market?

There's no way all these coins [1] retain proper value compared to NASDAQ [2]. Take AAPL for example: ~48% [3] in one year. GOOGL for example: ~36% [4] on one year.

[1] https://whattomine.com/calculators

[2] http://money.cnn.com/data/hotstocks/index.html

[3] http://money.cnn.com/quote/quote.html?symb=AAPL

[4] http://money.cnn.com/quote/quote.html?symb=GOOGL