Blockchain
technology is one of the most intriguing technologies today. Up until recently,
it has only been used for cryptocurrencies. However, more recently, many are
realizing the untapped potential of this technology. you can learn blockchain online
to better understand its innumerable uses. A blockchain's main selling point is
it's remarkable and enhanced security. This is all thanks to the structure in
which the data is stored and its famous decentralized technology.
Data structure
The data recorded in a blockchain is
recorded in a certain structure. The structure starts with one single block.
This is called the Genesis block. Every bit of data recorded on the system, as
it increases, is added in the form of a block to the genesis block. Each new
block is linked to the previous block and thus forms a chain connected al the
way back to the genesis block. This “chain of blocks” is where this data
structure gets its name from.
Distribution
Ledger Technology
One of the attributes of the
blockchain technology which is perhaps its most popular is the Distribution
Ledger Technology. The ledger is shared with all the people involved in the
transactions. This could be a few people or even thousands. The desirable
attribute of this distribution technology is that it is decentralized and does
not require a trusted central party that keeps all the records.
A new block is created for every
transaction and every user receives a message. In this way each person always
has an updated version of the ledger. The ledger on the blockchain network is
thus maintained by all the users and not one single centralized party. This
makes the structure more secure since each person is responsible for the data
recorded.
Since
the technology does not have a centralized authority, no singleuser has the
power to change any characteristic of the existing network for their own
benefit. A Blockchain is also much safer because it has an additional
layer of security. That of cryptography. Cryptography is a rather complex
mathematical algorithm that acts as a firewall against any attacks. Every piece
of information on the Blockchain is hashed cryptographically. This means that
the true nature of the data is encrypted and hidden. Every time any new data is
added, it passes through the complex algorithm which produces a different
value, thus encrypting the original data.
The blocks in the ledger each come with its unique hashing and
are linked to the hashing of the previous block. This makes it much more
difficult to tamper with any one single block of data.
The encryption algorithms make a Blockchain immutable. Immutability
is the attribute of being unchangeable. This is thanks to the decentralized
technology that does not require a centralized authority to curate all data
added to the ledger.
Each user is a node on the system and each node has a copy of
the ledger. Thus when one needs to add a transaction to the ledger, every node
must approve of its validity. Only of the majority validate the transaction can
it be added to the ledger. This factor promotes transparency in the system and
makes it corruption- proof.
If you want to know more about this technology, you can learn
from the best online
course for learning blockchain online. Thus, from the elements mentioned
above, you can see that the Blockchain is an extremely secure technology that
gives you the freedom to be responsible for your own transactions and does not
require you to put your trust in a third party that could possibly tamper with
your data. This technology can be used in every sector of society in the
future. This makes the knowledge of blockchain technology invaluable.
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