What is Blockchain?

Content:

Blockchain is a digital ledger technology that stores data in blocks and links them together in a chain. Once data is recorded, it becomes very difficult to change or hack it.


It is the base technology behind cryptocurrencies like Bitcoin and Ethereum. But blockchain is not only for digital money — it is also used in banking, supply chain, healthcare, and even voting systems.


The main advantage of blockchain is security, transparency, and decentralization. It removes the need for middlemen and makes transactions faster and safer.



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📌 Roman Urdu Version


Title: Blockchain Kya Hai?


Content:

Blockchain ek digital daftar (ledger) hai jo data ko blocks mein save karta hai aur unko chain ki tarah jodta hai. Jab ek block mein data likh diya jata hai to usay badalna ya hack karna bohot mushkil hota hai.


Ye technology asal mein cryptocurrencies (jaise Bitcoin aur Ethereum) ke peeche ka system hai. Lekin blockchain sirf paise ke liye hi nahi, balke banking, supply chain, hospital record aur hatta ke voting system mein bhi use hota hai.


Blockchain ka sabse bara faida hai: security, transparency aur decentralization. Matlab beech mein kisi middleman ki zarurat nahi hoti aur transaction tez aur safe hota hai

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