By solving double spending, Bitcoin enabled the first decentralized, trustless, and censorship-resistant digital currency. Double spending happens when someone uses the same unit of digital currency in more than one transaction. This ledger is publicly accessible and tamper-resistant, forming the backbone of Bitcoin’s defense against double spending. Known Double Spending Attack VectorsEven though Bitcoin solved double spending at scale, it’s worth noting some theoretical or situational risks:Race Attack : A user broadcasts two conflicting transactions simultaneously. Double spending occurs when someone tries to spend the same digital currency more than once, undermining the system’s reliability.