Blockchain is a type of technology that works as a digital ledger or database. It is made up of a chain of blocks, each containing a digital record of transactions that have taken place. Each block is linked to the one before it and after it in the chain using special cryptography, creating an unchanging “chain of blocks” of data. This makes it extremely difficult to tamper with or alter the data since any changes to the chain would be easily detected. Blockchain is often seen as the foundation of cryptocurrencies such as Bitcoin, due to its ability to securely store and transfer data. It is also being used in many other industries, such as finance, healthcare, and government, to securely store and transfer data as well. One example of blockchain technology in use is in the banking industry. Banks are using blockchain to securely store and transfer customer data and financial transactions, eliminating the need for third-party verification. This not only makes the process faster and more efficient, but it also reduces the potential for fraud or manipulation. An analogy that helps to explain blockchain technology is a chain of connected locks. Each lock in the chain is like a block in the blockchain, and opening one lock requires opening the lock before it and after it. In this way, it’s impossible to tamper with or alter the data without being detected. Fun Fact: The Bitcoin blockchain, one of the largest blockchains, has over 500,000 blocks and processes over 200,000 transactions every day.