Blockchain
Blockchain is a technology that allows for the creation of a digital ledger, or a record of transactions, that is spread across a network of computers. This ledger is decentralized, meaning that no single entity controls it, and it is distributed, meaning that it is spread across many computers. The transactions recorded on the blockchain are grouped together into blocks, and these blocks are linked together in a chain, hence the name "blockchain."
At a basic level, a blockchain is a way to record transactions in a secure and transparent manner. Because the ledger is decentralized and distributed, it is very difficult for anyone to tamper with or alter the record of transactions. Additionally, because the ledger is transparent, anyone on the network can view the transactions that have taken place.
One of the most well-known uses of blockchain technology is for the creation of cryptocurrencies like Bitcoin and Ethereum. In this case, the blockchain is used to record transactions of the digital currency and to keep track of the ownership of the currency. However, blockchain technology has many other potential uses beyond digital currencies.
Blockchain technology has the potential to revolutionize a wide range of industries by providing a secure, transparent, and decentralized way to record and track transactions. Some of the most promising real-world use cases for blockchain include: