Hello there, I want create blog about bitcoins in my country. Can I use in name of my domain www.bitcoin(something).xx ? or for ex. www.(something)bitcoin.xx 
I ask because of copyright. Thank you 
I ask because of copyright. Thank you Yes.. You can buy this type domain. you can not face any problem and you don't face copyright issue. Just not you so many people buy this type domain and do business. They are did not face any problem.
Its just a domain or nothing. You can do this.
Thank you