Does anybody know why the BTC is decreasing his value?
FUD. Deliberate manipulation by the banksters. It was over priced and it's just returning it where it should be in growth terms.
Completely right. Someone is going to double his crypto stakes during this recession. Chinese ban is just natural development, nothing else could have been expected. The thing with credit cards seems like a temporary fuss created to manipulate the market and make huge profits. It shows that even decentralized currencies are not really decentralized until news like this can affect the prices so tremendously.