Satoshi uses British English and inserts two spaces between sentences. Does Paco Ahlgren?
Check for yourself: http://coinbits.com/bitcoin-cannot-fail.html
But i must warn you that wordpress sometimes auto-formats text depending on users settings, so, it may not mean much if he doesn't use the 2 spaces between sentences in his blog
About the british english, well... I can't pronounce myself because i learnt english watching to hollywood movies lol
The article definitely uses American english
criminalize (criminalise would be more common in UK, though ize is perfectly correct)
cell phone (a "mobile" in UK)
decentralized (again, ise ending more common in UK)
privatization