Blockchain is a digital technology that records information in a secure and transparent way. Instead of storing data in one central place, blockchain spreads information across many computers called nodes. This makes it difficult to change or hack the data.
Each piece of information is stored in a “block,” and these blocks are linked together to form a “chain.” Once a block is added, it cannot be altered without changing all other blocks, which is nearly impossible. This is why blockchain is considered very secure.
Blockchain is important because it removes the need for middlemen. For example, in cryptocurrency transactions, people can send money directly to each other without banks. This reduces fees, increases speed, and gives users more control over their assets.
Beyond crypto, blockchain is used in areas like supply chains, healthcare, voting systems, and digital identity. As technology continues to grow, blockchain is expected to play a major role in the future of the internet.