Blockchain
Blockchain is a decentralized, distributed ledger technology that stores transactions in a chain of cryptographically linked blocks. Each block contains a timestamp and a hash of the previous block, creating an immutable and transparent record that is secured by cryptographic principles and…
Key facts
- First appeared
- 2008
- Category
- technology
- Problem solved
- Blockchain was primarily created to solve the 'double-spending problem' for digital currency without relying on a trusted third-party intermediary, thereby enabling truly peer-to-peer electronic cash transactions. It addresses the lack of trust in centralized systems and the vulnerability of digital assets to fraud and manipulation.
- Platforms
- Peer-to-peer networks (e.g., Internet), Various Operating Systems (Linux, Windows, macOS for node software)
Related technologies
Notable users
- Governments (for digital currencies, land registries, voting research)
- Supply Chain Logistics Firms (e.g., Maersk, Walmart for tracking)
- Technology Companies (e.g., IBM for Hyperledger, Microsoft Azure Blockchain Service)
- Individual Users (for cryptocurrency investments and DApp interaction)
- Financial Institutions (e.g., JPMorgan Chase, Mastercard for settlements and trade finance)
- Game Developers (for in-game assets and economies)