What are BTC platforms

1.

The well-known ones must be the heads of those major exchanges. You can download them and experience them. You can see which one is most suitable for you. The experience of each exchange is different. Only after the experience can you know who is better. Indivials use the whale exchange. The heads of major exchanges are as follows:

centralized trading platform

2. The cost of mining is too high. Don't think about it. Ordinary people can't afford to play. The simplest way is to go directly to BTC. I've got a lot of bitoffer, waiting for the output rection to rise

3. Okcoin and haobtc can be found on the Internet