I here recently. Whether it is organized on this resource the official championships on online chess. And also whether it is organized the official championships on online chess on continents and over the countries.
Otah : I follow chess info for years already but did not hear about a championship in online chess on this source ( this site ), but yes there are a lot of on line tournaments on chess.com.
In countries : yes, we in Holland ( the Netherlands ) have a championship in online chess, but what is " official " ? It is all new and developing.
What is the reason of your question ? Regards, RomyGer
Otah : see the Forum on this site "1st chess.com World Chess Championship" started six weeks ago ! Perhaps this is what you were looking for...