What is a transaction block?

Content corrected by an authorized editor Karol Kiełtyka - 9/23/20, 7:20 PM

Could somebody tell to me exactly what these whole blocks of friction are about? I read something there, but I really don't understand it. Could anyone explain it to me in simple language? Thanks for your help!

Karol Kiełtyka

23.09.2020 19:42

Accepted.