Overview of Blockchain Technology

Blockchain technology is a decentralized ledger system that allows data to be stored across multiple computers so that the records cannot be altered retroactively without the alteration of all subsequent blocks. This technology ensures transparency, security, and trust in digital transactions.

Key Features of Blockchain

• Decentralization: Unlike traditional databases controlled by a central authority, blockchains operate on a peer-to-peer network.
• Immutability: Once data is added to the blockchain, it cannot be changed or deleted.
• Transparency: All transactions are visible to participants on the network, enhancing accountability.

How Blockchain Works

1. Transaction Initiation: A user initiates a transaction.
2. Block Creation: The transaction data is bundled with other transactions into a block.
3. Verification: Network participants (nodes) verify the transaction through consensus algorithms.
4. Block Addition: Once verified, the block is added to the blockchain.
5. Completion: The transaction is complete and can be viewed by all participants.

Applications of Blockchain

• Cryptocurrencies: The most known application, enabling secure peer-to-peer financial transactions.
• Supply Chain Management: Tracking products as they move through the supply chain.
• Smart Contracts: Self-executing contracts with the terms directly written into code.