Blockchain for Dummies. Let’s break down blockchain in simple… | by Naouress Akrouti | The Capital | Mar, 2025
Blockchain is a digital ledger (like a record-keeping book) that stores information in a secure, transparent, and tamper-proof way. It’s best known for powering cryptocurrencies like Bitcoin, but it can be used for much more.
Think of it as a chain of blocks, where each block contains a list of transactions or data. Once a block is added to the chain, it’s very hard to change, making it secure and trustworthy.
- Decentralized: No single person or company controls the blockchain. It’s run by a network of computers (called nodes) around the world.
- Transparent: Everyone in the network can see the transactions, but they’re often anonymous.
- Secure: Data in a block is encrypted and linked to the previous block, making it nearly impossible to alter.
- Immutable: Once data is added, it can’t be changed or deleted.
- Transaction Request: Someone requests a transaction (e.g., sending cryptocurrency).