Why is Bitcoin limited to 21 million units? đ€
Did you know that Bitcoin is limited to 21 million units? Unlike traditional currencies that can be printed infinitely, Bitcoin has a fixed maximum supply. But why did Satoshi Nakamoto, the creator of Bitcoin, choose this specific number?
One of the main reasons is to create scarcity similar to that of gold.
âą Just as gold is limited in the ground, Bitcoin is limited in code.
âą This scarcity is designed to protect value against inflation. Unlike fiat currencies (like the dollar $ or the euro ⏠) that can be printed by central banks, Bitcoin cannot be âdilutedâ.
The choice of the number 21 million is linked to an economic calculation:
âą Blocks mined every 10 minutes: On average, a new block is added to the blockchain every 10 minutes.
âą Mining rewards halved every 4 years: This is called âhalvingâ. The initial reward was 50 BTC per block, today it is only 6.25 BTC and will continue to decrease.
âą With this rate, we will reach a total of 21 million Bitcoins around the year 2140.
By setting this limit, Satoshi Nakamoto wanted to create a deflationary currency:
âą The fewer Bitcoins in circulation, the rarer and more valuable they become.
âą This contrasts with traditional currencies that lose value when central banks increase the money supply.
âą This is why Bitcoin is often compared to digital gold.
Understanding this 21 million limit is to understand the very essence of Bitcoin: a scarce and decentralized digital currency, protected from inflation.
đŹ Question for you: Do you think this scarcity will increase the value of Bitcoin in the long term?