Twitter says it has complied with 63% of government requests for users' account information, of which there were a dozen in Canada so far in 2012.

In its first "transparency report," released Monday, Twitter revealed it has had 1,181 requests for user details between Jan. 1 and June 30 of this year. The vast majority, by far, were in the U.S. (948), followed by Japan (147).

Inquiries from authorities, typically in connection with criminal investigations, are on the rise.

"We've received more government requests in the first half of 2012 than in the entirety of 2011," Jeremy Kessel, Twitter's manager of legal policy, wrote in a blog post.

He also pointed out the site's policy is to notify users of requests for their account information "unless we're prohibited by law."

Twitter said it doesn't always comply with such requests if they are "overly broad" or if a user challenges the request.

The report also broke down data on how many copyright-violation complaints and orders to remove content Twitter received during the first half of the year.