Bitcoin has soared by almost 1,000% over the last 12 months—a rally that's been outmatached by the second-most-valuable cryptocurrency ethereum. The bitcoin price has surged from under $10,000 this time last year to around $60,000 per bitcoin while ethereum has added 1,200%, climbing from just over $100 per ether token to almost $2,000. However, despite bitcoin's recent success, some fear that central bank digital currencies (CBDCs) could be "kryptonite" for bitcoin and similar cryptocurrencies—while ethereum apps and upgrades help it to stay ahead. MORE FROM FORBES Bitcoin Price Prediction: Tesla 'Reveals' Potential Future For Bitcoin By null Bitcoin and ethereum, the two most valuable crytocurrencies, have both surged higher over the last ... [+] year. Getty Images "Bitcoin is the most talked about cryptocurrency but ethereum has more features, including being more flexible," Bank of America analysts wrote in a report this week, titled B...