Blair openly switched his loyalties to the Papacy, likely working with/for the P long before that.
However, Rev. 13 has nothing to do with any microchips. The "mark" is spiritual in nature, being tagged for Satan, in the following verses called the "spot" (mark):
4 He is the Rock, his work is perfect: for all his ways are judgment: a God of truth and without iniquity, just and right is he.
5 They have corrupted themselves,
theirspotis not thespotof his children: they are a perverse and crooked generation.
6 Do ye thus requite the Lord, O foolish people and unwise? is not he thy father that hath bought thee? hath he not made thee, and established thee? Deut. 32
The context of this is that despite the fact they were redeemed from Egypt, they retained the pagan practices of their father, the Devil.
The Harlot of the Revelation is also called "Egypt" and Sodom, as well as BABYLON.