Only 21 Million. Ever.

There will only ever be 21 million Bitcoin. Not 21 million and one. Not 'we'll print more if we need it.' Exactly 21,000,000. This is hardcoded into Bitcoin's protocol — as unchangeable as the recipe for a perfect BLT. No central bank can decide to 'stimulate the economy' by adding extra slices. Every 4 years, the rate of new Bitcoin created gets cut in half (the halving). By around 2140, the last satoshi will be mined. Until then, the sandwich just keeps getting more scarce.