Thank you for your answers,

so, did I understand you right, that there are two different ways to store the blockchain (bc)?
- The complete bc with at about 40GB of size. Which is going to grow massively, when more and more people use the network.
- The reduced bc, which only stores 'important' nodes and is 1.5GB of size and not going to grow as fast as the complete bc.
Is that right so far?
But in my eyes, 1.5GB (how big will it be in 5 or 10 years) is still a big number on some devices.
Are there ideas to face that problem?
I don't feel,  that hoping for growing bandwidth and storagesizes are the best way.

Regards
Chricken

Hi,
My question might have been answered before because it is very basic.
As far as i understood the concept of Bitcoin,all transactions ever done are stored in one single blockchain.

How does bitcoin prevent a rapidly growing blockchain? The more people use bitcoin, the faster it will grow. So it will grow exponentially until it is too big to handle.
I can't imagine, that there is such a basic problem.

Regards
Chricken