#EthereumSecurityInitiative
Bitcoin ek digital currency hai jo 2009 mein Satoshi Nakamoto naam ke ek unknown vyakti ya group dwara banayi gayi thi. Ye decentralized hoti hai, yaani is par kisi sarkar ya bank ka control nahi hota. Bitcoin blockchain technology par kaam karta hai, jisme har transaction secure aur transparent hota hai. Log ise online goods aur services kharidne ke liye use karte hain, aur iska use investment ke roop mein bhi kiya jata hai. Bitcoin ki supply limited hai — sirf 21 million coins banaye ja sakte hain. Aaj ye duniya ki sabse popular cryptocurrency ban chuki hai.