As I know, we can see transaction that we spend x ETH to get y ICO token if we buy by Crypto wallet.
How we can make sure that ICO owners send token to people who bought the token instead of their wallet?
The first step if you want to be involved in ICO is to have some crypto. Bitcoin (BTC) is definitely the most popular crypto now, but another great thing to use is ethereum (ETH). To get this crypto you need to go to an exchange where you can buy it. One of the exchanges mentioned in our guide is Coinbase, Coinbase has developed into one of the more popular exchanges due to the ease and speed with which you can buy tokens using a credit card.