Have ever heard about the blockchain?
Have ever heard about the blockchain?: It is a technology that is used in more and more sectors, it is a so-called disruptive technology, you will find it in the area of logistics, banking, cryptocurrencies, in voting systems.
It’s also gaining more notoriety, because it’s true that it’s in more and more sectors around us, and it’s just a small part.
Blockchain, or blockchain technology, is an advanced database formed by files, and these files are grouped in a consecutive chain, which can be of different sizes.
To put it simply, it can be imagined as a ring binder in which sheets are stored containing annotations that are filled in by the participants.
Only once these sheets are filled in, no information can be modified or deleted from them, each annotation made by the participants is called a transaction, this transaction or transactions can be economic amounts, as well as the dates of the transactions.
Following the analogy we can say that each sheet that is filed in the file cabinet would be a block of data, it would be similar to a block to a sheet of annotations in the file cabinet.
When we roughage more than one block, the chain is generated, it is a chain of blocks that is incremented and stored in chronological order.
Security of information and data validation processes.
The security and bravery of this system lies in the encryption of transactions and data blocks to provide them with confidentiality and integrity through authentication and non-repudiation of the content.
Each block of data that is generated, carries in its inside the Hash of its content together with the content of the shares themselves, but also carries the Hash of the previous data, thus establishing a relationship between them and between the blocks of the chain.
The Has, among other things, will give integrity to the blocks to detect if they have been manipulated or not, and will also confirm the front block to see if it really is the one that goes before chronologically.
If a block contains an incorrect Hash and does not agree or does not correctly reference the Hash of the front block, it cannot enter the chain, so as you can see, this process provides some security to this technology.
Another of the things that offers and provides security to the blockchain is that the entire chain that is growing as well as the data blocks, are distributed shared publicly or privately and replicated in tasks nodes.
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That is, as the data blocks grow along with the transactions in the chain, these are replicated down to the smallest detail immediately in many other thousands or millions in some cases of systems, servers, distributed computers participating in this service.
Therefore, these systems where the blockchains reside, child nodes and these nodes in turn will validate whether or not roughage or not a blunder in the transaction log.