What is Blockchain?
"Blockchain" is the latest trending technology. It's a technology that ensures data security using cryptography. It's a continuously growing number of records, called blocks. They are usually linked to one another internally by containing a cryptographic hash code from the previous block.
Blockchain is essentially an open, distributed digital ledger that can record transactions between two people in a secure and efficient manner. It follows peer-to-peer architecture(decentralized and distributed)". For more information, you can visit www.syyx.io.
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What Blockchain does to ensure the highest level of security? Or how it works
Blockchain has the highest level of security and is used for transactional data storage. The way it works is that each subsequent block uses the hash of the previous block to calculate its own hash. A computational process must verify the authenticity and uniqueness of any new block before it can be added to the chain.
This includes checking that all blocks have given their permission to add the block. This validation ensures that all copies are in the same state. This mechanism of adding hashcodes and checking blocks means that the newly added block can be referenced by subsequent blocks but cannot be altered. Someone can swap out or hinder a block.
The hashes for the previous and subsequent blocks will get changed and the ledger's shared status will be disrupted. When this happens, other computers in the network will know that there is a problem and will not add any new blocks to the chain until it is fixed. The block that caused the error will then be thrown out and validation will continue.