Blockchain, or chain of blocks, is a technology for storing and transmitting information in the form of data blocks, linked together chronologically and securely. Originally designed to support the cryptocurrency Bitcoin, blockchain has since found numerous applications in various fields due to its unique characteristics.
### Main characteristics of blockchain:
1. **Decentralization**: Unlike traditional databases, where data is typically stored on a central server, blockchain operates on a decentralized network of computers (or nodes). This means that no single entity controls the entire network and it is resistant to censorship.
2. **Immutability**: Once a data block is added to the blockchain, it cannot be modified or deleted. This ensures the integrity of the stored information and reinforces trust in the system.
3. **Transparency**: All transactions recorded on the blockchain are visible and accessible to all participants in the network. This allows for total transparency, as each transaction can be verified by any user.
