STEM与日常科技·英语30篇（1）

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区块链与比特币差异（入门）

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