Blogchain 1.0 — What is a Blockchain (The Genesis Blog)

Welcome To BlogChain

Let’s Get Into This!

Expect to learn:

  1. What a blockchain is
  2. What a block is
  3. What a Bitcoin block looks like
  4. How to think about a blockchain using real-world examples
  5. What happens when you try and change a blockchain

In its simplest form, a blockchain is a list of transactions that anyone can view and verify.

If that doesn’t make sense to you perhaps this will.

  1. Anyone can add information to it
  2. Anyone can get a copy of it
  3. All the copies of this spreadsheet are updated simultaneously
  4. Any information added to it can’t be deleted

Let’s use the Bitcoin blockchain as an example.

Are you still following along? Keep going!

Photo by Jim Beaudoin on Unsplash

Well done, you’ve made it this far!

Key takeaways:

A blockchain is public

A Bitcoin block is full of transaction data

A blockchain is very hard to change without anyone noticing



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