A patent application placed by MasterCard and posted by the US Government on the Patent and Trademark office's website is drawing some attention for how heavily MasterCard is adopting blockchain technology.In fact, the word "blockchain" appears 101 times in the application.The "abstract" summary of the patent reads as follows...All 3 of the big players in the credit card industry are now diving into blockchain tech.Visa is using Chain's blockchain code for its latest pilot, looking towards using blockchain for international payments, and just over a week ago we covered American express announcing a partnership with Ripple.MasterCard's full patent application can be viewed