What are some recent cases involving bitcoin?
In recent times, the cryptocurrency landscape has been abuzz with various cases involving Bitcoin. Could you elaborate on some of the most notable ones? For instance, have there been any significant legal disputes or regulatory crackdowns? Also, are there any noteworthy cases where Bitcoin has been used as a means of payment or investment, either successfully or unsuccessfully? Additionally, have there been any major hacks or security breaches affecting Bitcoin exchanges or wallets? I'm particularly interested in understanding the implications these cases have had on the overall perception and adoption of Bitcoin.