Introduction

Blockchain technology ka naam aaj har jagah suna ja raha hai, lekin bohat se log abhi tak ye nahi samajh paaye ke blockchain kaam kaise karti hai.
Agar aap beginner ho aur simple language mein samajhna chahte ho ke How Blockchain Works, to ye article aap ke liye hai.

Blockchain Working Ka Basic Idea

Blockchain ek distributed digital ledger hota hai jisme transactions blocks ki form mein record hoti hain.
Har block apne se pehle block se connected hota hai, jis se ek secure chain ban jati hai.

IN Easy Words:

Blockchain ek shared record book hai jo ek dafa likhne ke baad change nahi hoti.

Step-by-Step: Blockchain Kaise Kaam Karti Hai?

🔹 Step 1: Transaction Create Hoti Hai

Jab koi user transaction start karta hai (jaise data transfer), to wo request blockchain network ko bheji jati hai.

Example:
Ek student apna digital certificate verify karna chahta hai.

🔹 Step 2: Transaction Network Ko Send Hoti Hai

Ye transaction blockchain ke nodes (computers) ko send hoti hai.
Har node isay independently check karta hai.

🔹 Step 3: Transaction Verify Hoti Hai

Nodes transaction ko verify karte hain:

• Data valid hai ya nahi
• Duplicate ya fake to nahi

Is process ko consensus mechanism kehte hain.

🔹 Step 4: Block Create Hota Hai

Verified transactions ko ek block ke andar collect kar liya jata hai.
Is block mein hota hai:

• Transaction data
• Timestamp
• Previous block ka hash

🔹 Step 5: Block Chain Se Link Hota Hai

New block cryptography ke zariye previous block se link hota hai.
Is link ki wajah se puri chain secure ho jati hai.

🔹 Step 6: Transaction Permanent Ho Jati Hai

Block blockchain ka hissa ban jata hai aur data permanently save ho jata hai.
Isay baad mein change karna bohat mushkil hota hai.

Blockchain Mein Consensus Mechanism Kya Hai?

Consensus mechanism wo system hota hai jo decide karta hai ke kaunsi transaction valid hai.

Common types:

• Proof of Work (PoW)
• Proof of Stake (PoS)

Is ka maqsad trust aur security maintain karna hota hai.

Blockchain Security Kaise Maintain Hoti Hai?

Blockchain security in cheezon se hoti hai:

• 🔐 Cryptographic hashing
• 🔐 Decentralized network
• 🔐 No single point of failure
• 🔐 Immutable records

Is liye blockchain hacking bohat mushkil hoti hai.

Blockchain Working vs Traditional System

Traditional system mein:

• Ek central authority hoti hai
• Data easily modify ho sakta hai

Blockchain mein:

• Decentralized control hota hai
• Data transparent aur secure hota hai

Real Life Example of Blockchain Working

🎓 Education System:
Student ka certificate blockchain par store hota hai.
Employer direct verify kar sakta hai, bina kisi third party ke.

FAQs – How Blockchain Works

Q1: Kya blockchain real-time kaam karti hai?
Yes, lekin speed network aur consensus par depend karti hai.

Q2: Kya blockchain data delete ho sakta hai?
Nahi, ek dafa save hone ke baad data change nahi hota.

Q3: Kya blockchain sirf crypto ke liye hai?
Nahi, blockchain education, healthcare aur banking mein bhi use hoti hai

Conclusion

Blockchain ka working system security, transparency aur trust par based hai.
Step-by-step process ki wajah se blockchain traditional systems se zyada powerful aur reliable hai.
Agar aap blockchain ko future technology ke tor par dekhte ho, to iska working samajhna bohat zaroori hai.