Blockchain Definition

- A chain of blocks. A distributed accounting book used to record all the movements and balances of Bitcoin accounts in an unalterable, auditable and reliable way.

- It is a database distributed among all the nodes of the Bitcoin network, where all have copies of all the transactions made, in order to provide security to the network.

- These transactions are grouped into blocks and validated by the network miners to join the chain.

- Once a block joins the string it can not be modified or deleted. This chain of blocks is public, so that everyone can see that it was not adulterated.