A blockchain engineer is a specialist who develops systems that run on the blockchain. This unique technology provides the highest level of data protection. It is based on decentralized storage of information and can be applied primarily in the financial sector. And also in any structures, which require complete secrecy regarding data storage.
Нow did this profession come about
What is blockchain? Everyone has heard about blockchain, but few people know about exactly how this technology works.
The word "blockchain" is translated as "chain of blocks". This chain is the same type of files that are stored simultaneously on many different computers. If changes occur in any of the files (blocks), then they also occur on all other machines in the chain. If a completely new block of data is formed, then all computers - network participants - must check this data and, most importantly, give their consent to the participation of the new block in the blockchain.
This revolutionary technology was invented in the early 1990s, and is believed to be Japanese Satoshi Namamoto. But it is still unknown whether this is one person or a group of developers, and whether this is a fictional character at all. The main thing is that in 2008 Satoshi made the first technical protocol describing the blockchain publicly available - and now everyone could use it.
What are the main advantages of blockchain compared to other methods of storing and protecting data? First of all, security - the blockchain on different devices is almost impossible to hack. After all, when there is no main computer, it will take many decades to decipher the pieces of the puzzle. Secondly, this is interaction without intermediaries - all blockchain participants can exchange information without resorting to some kind of external source. This not only simplifies communication between those who do business, but also makes them more independent and, again, increases the level of security. And the blockchain also allows the participants in the chain to trust each other - after all, the entire database is publicly available and the actions of each user are visible to everyone.
In what areas can blockchain be applied?
Finance
Banking and payments are the ideal areas for blockchain applications. First of all, the technology ensures complete security of transactions (conducted financial transactions). Neither the attacks of fraudsters, nor the possible mistakes of the employees of the financial institution will be able to interfere with such operations - the system will do everything by itself and will reliably save all the data about the transaction, which in this case will not be stored in one place.
Another aspect is the absence of unnecessary links in the chain of transfer of funds from one organization to another. After all, each of the intermediaries takes their own commission for any action. And in the blockchain, there are no intermediaries, as we said above. And no one needs to pay a commission!
State organizations
For government agencies, confidentiality (secrecy) of information is an extremely important factor. These organizations store millions of citizens' personal data and are responsible for their security against fraud and theft. Plus a huge amount of technical data on how the entire structure of cities works, which can also be used by attackers. Blockchain, as is the case with banks, will provide reliable encryption of public records.
Electrical networks
Thanks to the so-called smart contracts (computer algorithms that ensure the transparency of the transaction), the blockchain can be used anywhere - for example, in providing some villages or city districts with electricity, again bypassing the centralized power grid. If you and your neighbors have your own solar panels on the roof, you can safely sell and buy energy using blockchain schemes and smart meters, which will significantly reduce the price of electricity for participants in such a network.
Health care
Blockchain can become the basis for creating a universal “health map” of any person. A paper card is inconvenient and has limited access. An electronic card in a clinic may disappear as a result of some extraordinary circumstances. But the patient data, protected and stored by the blockchain, will not go anywhere and will be available to any doctor at any time. It can even help save the life of a person in serious trouble - when all records of the state of the body and analyzes are at hand and can be sent by doctors among themselves in a split second.