There will only ever be 21 million Bitcoin in existence. This supply cap was designed intentionally and is one of the primary characteristics of Bitcoin. Furthermore, Bitcoin has “halvings” programmed into it. A halving is defined as a 50% block reward cut to the Bitcoin production rate, and they occur roughly every four years. This means that the rate at which new bitcoins are introduced into circulation slows down over time until it eventually reaches zero (estimated to occur around the year 2140). Furthermore, these halvings increase the difficulty of mining Bitcoin and will occur until the supply cap is reached. ... (full story)