@CNN: While some people are rushing to invest in cryptocurrencies like bitcoin and ethereum, other experts believe that the real value lies in the underlying technology. So what exactly is a blockchain? https://t.co/xYobbXiTtD https://t.co/7iRaLVInT2

@CNN: While some people are rushing to invest in cryptocurrencies like bitcoin and ethereum, other experts believe that the real value lies in the underlying technology. So what exactly is a blockchain? https://t.co/xYobbXiTtD https://t.co/7iRaLVInT2