Create README.md

Author: NEERAJAP2001

BitCoin Mining/README.md

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+# What Is Bitcoin Mining?
+Bitcoin mining is performed by high-powered computers that solve complex computational math problems , these problems are so complex that they cannot be solved by hand and are complicated enough to tax even incredibly powerful computers.
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+# Terminology :
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+1. Transaction : An transaction is a transfer of Bitcoin value and are collected in Blocks 
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+2. SHA256: a function which can generate an almost-unique 256-bit (32-byte) signature(Hexa-Decimal) for a text.
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+3. Block: Blocks are files where data pertaining to the Bitcoin network are permanently recorded
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+4. Nonce : Miners have to guess this number which will reward them Btc , A nonce is an abbreviation for "number only used once," which is a number added to a hashed—or encrypted—block in a blockchain that, when rehashed, meets the difficulty level restrictions. 
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+5. Difficulty Level : Number of prefix Contagiuos Zeroes 
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+# Theory :
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+Btc will be rewarded if Nonce gives us string with prefix of Zeroes the difficult number of times. sounds confusing?
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+So,Let's take example :
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+1. Let's assume we have difficulty level = 20 
+2. Now, Let's again assume that we have previous hash as : 'a5x208fecf9a66be9a2bc7...'
+3. Now we create text as  : text = str(block_number) + transactions + previous_hash + str(nonce)
+4. Now we pass text to SHA256 Function to generate hash
+5. Finally, that hash prefix must be equal to number of zeroes as difficulty level.
+6. And Boom!! You have mined succesfully.
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+# Draw Backs:
+The script has no drawbacks but due to increase in miners , the difficultly level increases and hence we'd require best hardware as fastest wins. 
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+# Refrences:
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+https://www.investopedia.com/terms/b/bitcoin.asp
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+https://www.youtube.com/watch?v=wTC31ZI6QM4
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+https://www.youtube.com/watch?v=ZhnJ1bkIWWk&t=143s
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