Blockchain is described as a publicly accessible distributed ledger, a piece of IT infrastructure that serves as a database for a continuously growing list of records called blocks.
Each block contains data (such as transaction records) and is cryptographically linked to the previous one, creating a secure, immutable information chain.
🔐 Why is blockchain trustworthy?
❌ It cannot be altered retroactively
✅ All transactions are transparent and publicly verifiable
🌍 No central authority or middleman controls it
📦 Real-world applications:
💸 Cryptocurrencies (Bitcoin, ETH...)
📜 Smart contracts
🎨 NFTs
🧾 Decentralized identity, medical records, supply chain...
References:
https://ethereum.org/en/what-is-blockchain
https://academy.generallink.top/en/articles/what-is-blockchain
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