How does cryptocurrency transaction processing work internally?

Question

big data

Hello, lately I have been interested in the inner workings of a cryptocurrency transaction processing program. As far as I understand, you install a certain program on your computer that takes on the task of `listener` of input data, processing it and outputting the finished result back to the network, and since all information processing is pure mathematics, it is processed through the GPU, that is, the video card processor, if so, then the question is, How is the transfer of information to the GPU and its output programmatically implemented?
PS I suppose that the input data goes to a certain shader program, which in turn processes everything through the processor of the video card and spits out the data to the processor on the motherboard, which in turn takes and sends the processed data to the network.

Answer 1

Yes, this is what blockchain technology is.

Answer 2

What I have been looking at to work with graphics cards has been using OpenCL or Cuda.