The European Central Bank has issued what appears to be both an acknowledgement of the central place that cryptocurrencies will hold in the future and a veiled threat against any currency which seeks to subvert central bank authority.
https://www.ecb.europa.eu/press/key/date/2017/html/ecb.sp170724.en.html
Here is the conclusion:
"Technological change is an integral driver of economic development. It is disruptive at times and impacts not only economies but also our societies. Central banks are not isolated from these processes.
Central banks are well advised to be prudent and forward-looking when approaching the respective challenges – just as they are when implementing monetary policy to honour their mandates.
Facing the uncertainties of technological change, central banks therefore should
- Adapt policies to take into account technology-driven socio-economic changes,
- Adopt appropriate technology that supports the various functions and tasks of a central banks, and
- Anticipate technological risks to our operations.
With these principles in mind, central banks can better manage the challenges stemming from technological change, even when it is disruptive. Used appropriately they can even help to improve our operations and efficiency."