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Block and chain, because the word suggests, a series made of blocks! So we know very well what are these blocks. Blocks are a kind of database! People who work on computers know databases perfectly! And for those that do not know, as we say in simple language, then this database is known as Collection of Data! Data, hardly anything else, whatever information you type on your computer, that facts are stored within the electronic form inside computer! Similarly, every information on the Internet is a type of data! And this is often a collection of data database! This database is kept in the computer such that it can easily be searched. In blocks, the database is collected in groups and also this group is named blocks. Each block carries a limited space or ability to collect the database! And whenever a block is totally filled with all the database, it really is automatically for this next block! In this way one block gets attached to another block! And there's a sequence! This is what is termed the chain of blocks, that is certainly, the blockchain! What are the elements of Blockchain? There are three types of elements in the blockchain- Data saved in blocks Hash (Transition Hash) generated from that transition Hash.(Previous Hash) of the first block related to that block Note – The first block inside blockchain is termed the Genesis Block! What are nodes in blockchain? The computers on what blockchain data is stored! They are called nodes and the nodes which might be connected to the blockchain have a very copy in the blockchain! Which updates every 10 minutes! With the help of these nodes, it is usually found out with a Hash make certain there continues to be no alteration of it. If all of the transitions in the blockchain are licensed by the nodes, that is, the proof of work is approved, chances are they are coded in blocks! With the help of nodes, the data in the blockchain is stored, spread and preserved. A copy of each transition made within the blockchain on each from the nodes is updated every 10-ten mins! That's why it really is considered safe! How does blockchain process? Each block features a cryptographic hash in the previous block which can be generated on every transition made within the blockchain! Hash is a string of numbers and letters. That is, Hash can be a mathematical function that encrypts the input data to the output of a set length. So, no matter the size of the input data, the Encrypted Unique Hash is definitely of a limited size! And at the same time it really is also of this particular Hash produced from the previous block's transition! Why is blockchain technology considered secure? If someone wants to edit the database with this Blockchain Technology, another new hash is generated! Due to which the setting coming from all after blocks is changed and it is easy to know in which the setting may be changed! So it's impossible to tamper with the information on this blockchain! Now if you realize that you must make some changes inside block chain, then you have to show the evidence of work, that is certainly, for whatever changes you are going to make, all of the computers (Nodes) attached to the blockchain have to make this change. The information must be sent and only if the majority from the computers approve, then you can certainly change it! Where can blockchain technology be used in the future? In preventing corruption Yes, corruption can be prevented by utilizing blockchain technology because whatever database is saved in the blockchain is copied on every nodes therefore anyone desires to change the information then all the others will know over it! In maintaining government records The usage of blockchain technology in government offices may be very secure. Anyone whose name is held in the database cannot be easily changed while exchanging properties using Blockchain technology! Due to which any disputes regarding properties should come down. Patient record keeping inside the hospital If all of the information in connection with patients is kept inside blockchain, this will be correct and anyone will be able to can get on. In virtual currency | In Cryptocurrency People have started investing within the cryptocurrency you are seeing in the online market like bitcoin, ethereum, dogecoin etc this also currency is growing faster than gold! One advantage on this is that it is decentralized i.e. this doesn't require any middleman like inside the ordinary currency we use, we will need to use banks to transfer money in one place to another! And they also charge some fees for this, banks will never be needed inside the transition to Cryptocurrency! And you is going to be able to transact with crypto currency anywhere inside world!