So, this is really cool
http://www.trustnodes.com/2017/06/07/singaporean-dollar-tokenized-ethereums-blockchain-monetary-authority-singaporeAlthough they will use a private implementation of ethereum, this statement is really important:
"The tokenization was inspired by R3’s Project Jasper, which was trialed by the Bank of Canada, but they seem to have opted for the use of Ethereum, probably because it has a public blockchain which may allow for greater interoperability and security."So, while these domestic currencies will have their own private chain, they will be most likely interoperable with the public implementations for extra security.
