Are there coins (if created) a risk for bitcoin? Can compete bitcoin with these coins which will be supported by the most important Authorities of every country?
They'll be about as much of a threat as
Mintchip was. We already use digital currencies supported by the authorities of every country, it's called having a bank account. Whatever they end up creating will have literally no perceivable benefit to anyone beyond what we've already got today. No system with an unlimited monetary supply, central points of failure, and inherent shortcomings with fungibility and censorship (which is exactly what they'll come up with) will look like it's worth anything compared to Bitcoin. All they can do is create a pale and crippled imitation. There's no contest.
Thanks for the comment.
Mintchip is not a digital coin and it is not conceived as a such kind of thing. According to the article given in your post "MintChip was not a digital currency akin to bitcoin, but rather a digital payment mechanism meant to function as an electronic cash that could be transferred between users."
While the idea given from the articles given in the main post suppose that the interested countries want to have a real digital coin and not a "digital payment mechanism meant to function as an electronic cash that could be transferred between users."
You pretend that nor the best scientist of USA (or England) and nor the best scientist of Russia will be able to understand and clone blockchain? Or to create a digital coin like or similar to bitcoin?
I never said they can't create something similar, just that they won't be able to make something on par with Bitcoin, let alone better than. Their interest is in building something that they can control. That single, unwavering goal is their immediate downfall because it sends them in a direction that leads to a sub-par service/product. They will create something that doesn't have has a fixed supply so they can keep printing money out of thin air. They will create something that has a central point of failure and collects mountains of personal information which will be leaked or hacked at some point. They will create something that can block or freeze transactions. For example, something that permits us to donate to wikileaks is clearly not in their interest, so they're not going to allow that. All of these things and more become an immediate downside compared to Bitcoin because they won't surrender control. I don't care what they're going to make or how dissimilar it might be to Mintchip, because it's still going to be inferior in every way, shape and form. There's no contest.