Chinese government says Bitcoin cannot be used as currency
techinasia.com
techinasia.com
Which means it is an interesting digital phenomena but definitely not a currency.
If yuan are hard to spend, due to legal constraints, I don't imagine a non-Chines is willing to sell BTC for yuan.
How would a Chinese use BTC in this way? Buy BTC from someone willing to accept yuan; spend the BTC on .... foreign goods mailed to China? Foreign assets, to "park" the value for a while ?
The fact that five Ministries and departments inserted themselves into this declaration suggests that the Bank of China is not strong enough to unilaterally ban bitcoin beyond what we have seen here: fairly sensible restrictions on BTC investment and holding by financial institutions.
What we are witnessing may even be a regulatory coup of sorts by MIIT, the Ministry with the most obvious interest in promoting bitcoin and the strongest claim to serve as regulator of it and other "virtual commodities".
But yeah, probably.
When you have, on the same day:
a) Greenspan's announcement saying bitcoin is a bubble, and using the "no intrinsic value" argument
b) China effectively banning bitcoin (not that we have the specifics to say that "ban" is the best term yet)
...it's not going to do wonders for the price.
Emm, this is not how a "gold rush" works.
The whole idea is that there were far more fools who lost money than geniuses who made money. If it was a 50% chance (1 foul for every genius) it would be a pretty damn decent proposition).
Not to mention that those (far fewer) who made money, made them by betting against the fools, and selling them shovels and stuff.
More accurately (but still drawn with a broad brush),for every 1,000 fools who lost $1000 in the gold rush, there is a genius who made $1,000,000 selling shovels and services to the fools (and a bunch of people who were gainfully employed by that genius who would have been gainfully employed doing something else without the gold rush and didn't really gain or lose financially.)
What other decision is possible? To have an official govertment exchange rate posted for banks to use? That would be insane, with BTC's volatility.
There is plenty of regulation for bartering in most countries. Like for a house, you local IRS will have something to say if you exchange your house and dodge taxes like that.
Taxes is the key issue in our economies.
Don't know the situation in China, but that already holds for some countries.
E.g in my country, any transaction over a certain amount of money (not very big), has to be done through a bank to be legal.
You also can't make payments on a loan with bitcoin, store bitcoin in the bank or expect to accumulate interest (by the bank, disregarding proof-of-stake-type currencies), etc.