What is Blockchains?
The Blockchains is the invention, of a person or group of. People referred to as Satoshi Nakamoto, and since its an invention. It has evolved into something bigger. It can also be defined as digital information (the block) stored. In a public database (the chain). It acts as a simple yet ingenious medium of. Disseminating information from A to B in a fully automated and safe manner.
Thus, it can simply be defined as a time-stamped. Series of immutable records of data that is managed by a. Cluster of computers not owned by any single entity. Each of these blocks of data is safeguarded and. Bound to each other with the aid of cryptographic principles. The blockchain network does not have a central authority. Since it is a shared, and immutable ledger. The information in it is open for anyone and everyone to see. Thus anything built on the blockchain is by its very nature open. And everyone involved is accountable for their actions.
How Does Blockchain Work?
Block is verified by thousands, perhaps millions of computers. That is distributed around the net. The verified block is then added to a chain. Which is stored across the net. Creating a unique record with a unique history. Understand that falsifying a single record would translate to falsifying. The entire chain in millions of instances.
Details held on a blockchain exists as a shared and. Continually reconciled database. The blockchain database is not stored in any single location. Implying that the records it keeps are truly public and easily verifiable. Thus, no centralized version of this information. Exists for a hacker to corrupt. Since it is hosted by millions of computers at the same time. It’s data is accessible to anyone on the internet.
Why Blockchain Shines
Over the years, blockchain has gained so. Many accolades and attention. Let’s see some of the reasons why blockchain shines.
- Blockchain is immutable, which means no one can tamper with the data that is inside the blockchain.
- Blockchain is not owned by a single entity, thus it is decentralized.
- It is transparent, thus no one can track the data if they try.
- The data is cryptographically stored inside.
- Blockchain transactions are secure, private, and efficient.
- There’s improved accuracy by eliminating human in verification.
- There are cost reductions by eliminating third-party verification.
Cons of Blockchains
The following areas are where blockchain can improve upon a more efficient and effective service.
- Low transactions per second.
- It has a history of use in illicit activities.
- There’s significant technology cost linked with mining bitcoin.
- It is susceptible to being hacked.
Who Uses Blockchains?
Blockchain Vs. Bitcoin
The blockchain technology first came on board in 1991 by Stuart Haber and W. Scott Stornetta, who were the two researchers who wanted to implement a system where document timestamps could not be tampered with. Blockchain had its first real-world application in 2009 when Bitcoin was launched in January 2009.
Bitcoin, on the other hand, is built on the blockchain. According to Bitcoin’s pseudonymous creator Satoshi Nakamoto, bitcoin is “a new electronic cash system that’s fully peer-to-peer, with no trusted third party.
Is Blockchain Private?
The contents of blockchain can be viewed by anyone, but users can also decide to connect their computers to the blockchain network as nodes. With this, their computer receives a copy of the blockchain which is updated automatically any time a new block is added.
Each computer in the blockchain network comes with its own copy of the blockchain, which implies that there are tons, or in the case of Bitcoin, millions of copies of the same blockchain. Even though each copy of the blockchain is identical, spreading that information across a network of computers makes the information more complex to manipulate. Blockchain does not have any single, definitive account of events that can be manipulated. Rather, a hacker would have to manipulate every copy of the blockchain on the network. If you study Bitcoin Blockchain, you will notice that you do not have access to identifying information about the users making transactions. Now even though transactions on the blockchain are not completely anonymous, details about users are restricted to their username.