Glossary
Blockchain Technology

Blockchain Technology

Blockchain technology is a distributed digital ledger system that maintains a continuously growing list of records, called blocks, which are linked and secured using cryptographic hash functions. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data, creating an immutable chain of records that is resistant to modification and provides transparency across a decentralized network of participants.

Core Components

The fundamental elements of blockchain include blocks that contain transaction data, cryptographic hashes that link blocks together, and consensus mechanisms that ensure network participants agree on the validity of transactions. Digital signatures provide authentication and non-repudiation, while distributed nodes maintain copies of the entire ledger, eliminating single points of failure and central authority requirements.

Types of Blockchain Networks

Public blockchains are open to anyone and fully decentralized, such as Bitcoin and Ethereum. Private blockchains are restricted to specific organizations and offer greater control over access and governance. Consortium blockchains are semi-decentralized networks controlled by a group of organizations, while hybrid blockchains combine elements of both public and private networks to balance transparency with privacy requirements.

Business Applications

Blockchain technology enables secure peer-to-peer transactions without intermediaries, making it valuable for cryptocurrency, supply chain tracking, digital identity verification, and smart contracts. It provides transparency and traceability for complex supply chains, enables secure voting systems, and supports decentralized finance applications. The technology is particularly useful for industries requiring immutable records, such as healthcare, finance, real estate, and intellectual property management.

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