What is a Blockchain Ledger?
A blockchain ledger is a decentralized digital record-keeping system that captures and maintains transactions across multiple computers in a secure and tamper-resistant manner. Unlike traditional ledgers that are managed by a central authority, blockchain ledgers distribute the data among a network of nodes, ensuring transparency and reducing the risk of fraud.
Each transaction on the blockchain is grouped into a block, which is then cryptographically linked to the previous block, forming a chain of blocks—hence the term "blockchain." This structure not only secures the data but also enables participants in the network to verify the authenticity of transactions without relying on a single point of control.
One of the key characteristics of a blockchain ledger is its consensus mechanism. Different types of blockchains utilize different methods to agree on the validity of transactions, such as Proof of Work (PoW) or Proof of Stake (PoS). These mechanisms play a crucial role in maintaining the integrity and security of the ledger.
Blockchain ledgers are essential to the functioning of cryptocurrencies. They enable peer-to-peer transactions, where users can send and receive digital assets without intermediary institutions like banks. This innovation not only enhances efficiency but also underscores the growing shift towards decentralized finance (DeFi).
In summary, a blockchain ledger is a foundational technology in the world of cryptocurrencies, offering a transparent, secure, and efficient method for recording transactions while enabling the evolution of financial systems.