Cryptocurrencies are built on cryptography. They don't seem to be secured by men and women or by rely on, but by math. It is a lot more probable that an asteroid falls on the house than that a bitcoin tackle is compromised. 你是否使用过更改过服务条款的产品？或者删除了你认为有用的功能？一旦智能合约发布到以太坊，只要以太坊存在，它就会一直在线并运行。就连创作者也无法让它离线。由于智能合... https://getsocialsource.com/story3005790/not-known-details-about-etfs