I want to know whether what is a blockchain technology...? If you know, please explain as simple as possible....
Blockchain technology is made for bitcoin. It is a public and digital ledger that are linked and secured with cryptograph. The purpose of blockchain technology is to record all the data or transactions that is happening inside the bitcoin system. It serves as the record list or the database. It is recorded publicly and chronologically.
All the transactions can be seen in using blockchain technology and in fact you can see all your past transactions through the use of it and as what you have said it serves as a record list in which all the data gathered into one chain.