in game i've seen these titles to be player based...but i'm not sure if this has been changed.
wiki labels these titles as account based. So basically, I'm wondering if these titles are player based (character only) or account based (for all characters in the account).
Treasure Hunter/Wisdom title
Xiaxhou of Trinity
Mask of Illusion
Account based , nothing more to it 
Xiaxhou of Trinity
tyvm. before it wasn't...so yeah i was confused =]
bsoltan
They got changed from character to account based back in November.
Ariena Najea
Also note that all of your characters' previously earned points towards these titles have been added into the account total, so that you haven't "lost" any of your progress.
Eragon Zarroc
you have to log into each seperate character for the points to be accumulated onto the title if they had points before the update.