Behind the dApp: Understanding Blockchain Architecture | HackerNoon
Briefly

This article explores the evolution of blockchain technology from its Bitcoin origins to its revolutionary potential in data management and decentralized applications. It explains blockchain as a distributed ledger that operates across a peer-to-peer network of nodes, ensuring consensus without a central authority. The article highlights blockchain’s tamper-resistant nature, resulting from its structural design—every block's inclusion of cryptographic hashes and transaction timestamps—which establishes a secure, immutable database. Additionally, it emphasizes the role of node providers like GetBlock in the blockchain ecosystem, facilitating access and interaction for developers and users alike.
A blockchain is a distributed digital ledger, a spreadsheet duplicated across a network of computers, updating simultaneously without a single controlling entity.
The true innovation of blockchain lies in its ability to maintain consensus about the state of data across a distributed network without requiring trust between participants.
Once data is recorded in a block and added to the chain, it becomes nearly impossible to change, making blockchain an inherently tamper-resistant database.
Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data, creating an immutable structure that resists alteration.
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