Bitcoin is not issued by a specific monetary institution, but is generated by a large number of calculations of a specific algorithm. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transaction behaviors. The decentralized nature of P2P and the algorithm itself can ensure that the currency can not be manipulated artificially and create a large number of bitcoins.
Bitcoin is very similar to cash.
Advantages of bitcoin: it will not be frozen, untraceable, tax-free, and the transaction cost is extremely low. Compared with speculators, it is wealth, and people outside the currency circle may think it is a scam.
Ethereum (ETH) is a digital token of Ethereum. Like other digital currency, ETH can be bought and sold on the trading platform. Generally speaking, Ethereum is an open source platform digital currency and a blockchain platform, which provides a platform for developers to build and publish applications on the blockchain. Etheeum can be used to program, distribute, guarantee and trade anything, such as voting, domain names, financial transactions, crowdfunding, corporate management, contracts and most agreements, intellectual property rights and smart assets that benefit from hardware integration.
Bitcoin and Ethereum are mainstream digital currency, so they can be properly invested and the transaction is risky. You should invest carefully. You can search for fire coins, coin security, OK and Dobby trading platforms in Baidu, and you can trade bitcoin. These are relatively large trading platforms. Invest in mainstream digital currency, and don't invest in shanzhai or air coins.