Blockchain, a decentralized, distributed database enforced by adisseminated network of computers rather than a central authority, is the backbone technology behind cryptocurrencies. This technological innovation has been gaining increasing attention in the financial world due to its potential to disrupt traditional business models and create new opportunities. For EMBA students, understanding the basics of blockchain is essential for staying informed about this transformative technology and its implications for businesses.
Decentralization: The Key Difference
Decentralization is the fundamental principle that sets blockchain apart from traditional databases. In a centralized database, there exists a single point of control responsible for maintaining the integrity and security of the data. With blockchain, however, data is stored across a distributed network of computers, making it resistant to tampering and control by a single entity.
Distributed Ledger: The Foundation of Blockchain
At the heart of blockchain is a distributed ledger – a digital database that maintains a continuously growing list of records, called blocks. Each block contains a cryptographic hash of the previous block, creating a chain of data that is linked and secured using cryptography. This structure enables transparency, immutability, and consensus across the network.
Consensus Mechanisms: Maintaining Network Integrity
Consensus mechanisms are fundamental to the functioning of blockchain networks. They enable agreement on the validity and authenticity of transactions within the network, ensuring that data remains accurate and secure. Popular consensus mechanisms include Proof-of-Work (PoW) and Proof-of-Stake (PoS).
Cryptocurrencies: The Application of Blockchain
Cryptocurrencies, such as Bitcoin and Ethereum, are the most well-known applications of blockchain technology. They allow for peer-to-peer transactions without the need for intermediaries or central authorities, making them a powerful tool for disrupting traditional financial systems and enabling new business models.