p.s quick web tip, I noticed your links that 301 redirect are on the root, if you put them under yourwebsite.com/go/bitcointax you can then noindex your redirects in your robots.txt with a wildcard.

If you use the redirection plugin for Wordpress then you just need to change your redirects slightly and then update your robots.txt file.

I had a penalty / loss of rankings before on a site of mine for not adhering to the above approach.

Cheers