In the following article What Are Bitcoins? How Do Bitcoins Work?, it is mentioned that a blockchain is composed of three parts:

  • Identifying address
  • History
  • Private key header

Although, after taking a look at this question "Can someone explain how the Bitcoin Blockchain works?" it doesn't reflect what that article mentions.

If those three parts are the actual parts of a blockchain, can someone provide a better explanation for each one?

1 Answer 1


They are not. They might be provided to try to provide a better explanation, but I don't even think that this purpose is achieved. There are several sentences throughout the article that make no sense at all, like:

A bitcoin, at its core, is a very simple data ledger file called a 'blockchain'. A blockchain's file size is quite small, similar to the size of a long text message on your smartphone.

I would recommend you to look at the question you mentioned , that actually have two really good answers, and ignore the first article.

  • Agreed, the terminology in that article is totally confused, and the information about mining is hilariously obsolete. Throw it away and read something else. Commented Sep 24, 2017 at 2:30

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