The answer:

A cryptocurrency (Bitcoin has been called “digital gold,” and for a good reason),

block chain is software and the algorithm is speciality (By allowing digital information to be distributed but not copied, blockchain technology created the backbone of a new type of internet. Originally devised for the digital currency, Bitcoin, the tech community is now finding other potential uses for the technology.) [ “As revolutionary as it sounds, Blockchain truly is a mechanism to bring everyone to the highest degree of accountability. No more missed transactions, human or machine errors, or even an exchange that was not done with the consent of the parties involved. Above anything else, the most critical area where Blockchain helps is to guarantee the validity of a transaction by recording it not only on a main register but a connected distributed system of registers, all of which are connected through a secure validation mechanism.” ]

So Block chain performs with different nods (computer) and a process of decentralized activity ( Picture a spreadsheet that is duplicated thousands of times across a network of computers. Then imagine that this network is designed to regularly update this spreadsheet and you have a basic understanding of the blockchain.

Information held on a blockchain exists as a shared — and continually reconciled — database. This is a way of using the network that has obvious benefits. The blockchain database isn’t stored in any single location, meaning the records it keeps are truly public and easily verifiable. No centralized version of this information exists for a hacker to corrupt. Hosted by millions of computers simultaneously, its data is accessible to anyone on the internet. )

Bitcoin scarcity { Scarcity, the idea that some one thing is finite, has been thus far not applicable to the digital realm. Until the arrival of bitcoin, nearly anything that was of digital nature could be duplicated without recourse. Due to the ease of reproducing computer code, the problem of double-spending was the unsolved mystery of viable digital money. However, the innovation of the blockchain ledger has added a potent economic function to the equation of online exchange: digital scarcity. }

New bitcoins are created by Bitcoin mining in computer with special graphic and software.(Scarcity, the idea that some one thing is finite, has been thus far not applicable to the digital realm. Until the arrival of bitcoin, nearly anything that was of digital nature could be duplicated without recourse. Due to the ease of reproducing computer code, the problem of double-spending was the unsolved mystery of viable digital money. However, the innovation of the blockchain ledger has added a potent economic function to the equation of online exchange: digital scarcity) .

Each time a new block is added to the bitcoin network, freshly minted bitcoins are rewarded to whichever miner discovered the valid block. This reward, initially set to 50 BTC, fell to 25 BTC in late 2012. Sometime next month, this number is expected to fall to 12.5 BTC. This event is known as a "halving".
Confirmation is the code used for each transaction, in exchange, wallet.....
transaction ID is the code you need to give for a particular sender to send bitcoins as per transaction ID. So the sender will follow and send in that location only.

Bitcoin Block Explorer is an open source web tool that allows you to view information about blocks, addresses, and transactions on the Bitcoin blockchain.