The three things that concern me about Bitcoin are the following:
1. The problem of scalability, it is necessary to evaluate the effectiveness of exchanges for millions of daily transactions, especially in the case that a practical and massive use is achieved.
2. Security from the point of view of hash control by Chinese mining, although it is very unlikely, there is a small possibility that somehow the security will be altered.
3. A potential fall of Bitcoin because another Altcoin had a very strong impact on the ecosystem and attracted the attention of millions of people, displacing Bitcoin and relegating it to a low position.
bitcoin transactions in crypto are the transactions that are considered to be very good and easy to use. in terms of security it is very reliable and has very good accuracy.
until now I have not seen that bitcon will fall because altcoin I actually see altcoin still depends on the movement and development of bitcoin, not the other way around.
so there is no need to be afraid.