Bitcoin would first have to pas the test of widespread use as a trading currency and a market cap of at least 1 trillion USD (2013 dollars) and more like 5-10 trillion USD. The exchange rate for one Bitcoin would have to in the 6 or 7 figure USD range. Then there is no reason why it cannot be a worldwide reserve currency or part of a basket of worldwide reserve currencies.
Why?
When does a currency become a reserve? How much does reserve status matter? Is it not a means of private reserves for individuals right here and now?
Quick opinion on that
When does a currency become a reserve?I suggest that any currency and all currencies are a reserve to someone. If you do a lot of trade with Albania the LEK would probably be part (small) of your reserves but not widespread in other Countries.
The question should be when does it become a widespread and major reserve internationally which is probably what you intended.
PS I LOVE Zerohedge which is an originator and consolidator of financial and political articles and opinions with (frequently but not always) very astute analysis from industry insiders.
The answer is ....What is available in large quantities safe, less volatile, liquid and useful in your International trade as it is widely accepted.
Until recently that is $ Euro and Yen being top.
This is/will soon change to include CNY and as I have posted elsewhere the Chinese are active and vocal on this.
http://www.zerohedge.com/news/2013-10-18/9-signs-china-making-move-against-us-dollarHow much does reserve status matter?To bitcoin holders it matters mainly due to the increased price/value of their holdings should reserve currency status lead to substantial increased demand on a very limited supply. To Countries it may matter at some point (not yet or probably for many years) if it is safer and less volatile than what they are currently holding ( e.g a hyperinflation scenario for $ or Euro)
or worldwide loss of faith in all fiats. The next move to reserve currency status will definitely be the CNY and this will take some years ( maybe not that many at the current pace) Bitcoin or other cyber/crypto currency will probably not achieve that status in the next 10-20yrs and China will not want that unless they are "market leader" In any case by then some National Governments may well have created their own form of Crypto as the cost advantages of its use vs fiat and physical are well known.
But this is a side issue in the mid term.
Is it not a means of private reserves for individuals right here and now?I completely agree for all except speculators and is more important to those holding currencies that are under pressure, subject to volatilty/devaluation or in Countries with capital controls. It is also a potential means for merchants to save money on transaction costs but I think we are working toward that goal and are not there yet.