Looks like a framing attempt.
You think whoever was trying to frame you had a time machine?
Old Raw Registrar Data December 25, 2013
Domain Name: PIGGYBACKMINING.COM
..
Registrant Name: JASON BOYKO
Registered On December 24, 2013
THe other is even better.
Domain History Info for blockkchain.info
Old Raw Registrar Data November 12, 2013
Registrant Contact Information:
Name: jason boyko
Organization: digital mining
It was a phishing site. Here is an old copy sans css:
https://web.archive.org/web/20131120014143/http://blockkchain.info/Nice catch there warren.