SAU1 Blog post 5: Cryptocurrencies and Blockchain

     Cryptocurrencies  and blockchain are the newest technology system. They don't need a big amount of space to store the data and don't need another control or supervise them. Thus,the block chain skill can decline bank or economics system's mistake. It also can make the trade speed faster and safer.
     Blochchain also can use on traceable products,the resourse of products, the process of products can all be seen. We can clearly know what we eat or buy, and how these products make. Cryptocurrencies is a kind of virtual currency,you can buy service or products on the specific virtual space.It's not a real coin but can do same thing like coin. Cryptocurrencies is safer because it uses cryptography to secure its transactions.
     A good example is bitcoin, which is the highest market value of cryptocurrenciesy now. you can pay diractly to others no need to through the bank. Many people use bitcoin to earn money. However, I don't think it's a good trading currency. Bitcoin is not stable, the value always change dramatic. I would think it's a stock or venture capital. Using the new trading system still need to be careful.