This topic might has already been discussed in this forum
But we need to still learn more about the Block chain which some of us here don't still understand
But to understand the Block chain you will need to take it as a "ledger" or a "database"
Go through the article and learn more about the Block chain
“5 things you don’t know about Blockchain” by Digitization Coach | Adrian Soon
https://link.medium.com/wh4yNfe3ecb