STEM与日常科技·英语30篇（1）
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Blockchain vs. Bitcoin: A Beginner’s Distinction
区块链与比特币差异（入门）
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Bitcoin is a digital currency — a specific application — while blockchain is the underlying technology that records transactions securely and transparently.
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Think of blockchain as a shared, tamper-resistant digital ledger; Bitcoin uses that ledger to track who owns how many coins.
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Every Bitcoin transaction is grouped into blocks, verified by network participants called miners, and added chronologically to the chain.
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Other blockchains, like Ethereum, support smart contracts — self-executing code that automates agreements without intermediaries.
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Supply chains use private blockchains to trace food from farm to shelf, ensuring authenticity without revealing pricing or supplier data.
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Healthcare systems explore blockchain for secure, patient-controlled medical records that update across hospitals without duplication.
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Bitcoin’s design limits speed and scalability, but newer blockchains prioritize energy efficiency, privacy, or regulatory compliance instead.
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Understanding this distinction helps avoid confusion: blockchain is a tool; Bitcoin is just one thing you can build with it.