Before you touch yourself, they want it to be CENTRALIZED! 
http://www.zdnet.com/article/japan-mulls-over-bitcoin-as-a-legal-currency/
"However, if these changes go ahead, virtual currency would have to be backed by a central financial authority, leading to tight controls, regulations and potentially taxation.
As an example, the FSA would require cryptocurrency exchanges and businesses dealing in virtual currency to register with the agency."

http://www.zdnet.com/article/japan-mulls-over-bitcoin-as-a-legal-currency/
"However, if these changes go ahead, virtual currency would have to be backed by a central financial authority, leading to tight controls, regulations and potentially taxation.
As an example, the FSA would require cryptocurrency exchanges and businesses dealing in virtual currency to register with the agency."