If you're worried about how many bitcoin are left before the cryptocurrency hits its cap, do not worry - it is still a long way off.
So, while it may take a while for bitcoin to hit its cap, how many are left?
How many bitcoin are left in 2021?
As of June 2021, 18,741,143 BTC is in circulation, with a max cap of 21,000,000 BTC. This means 2,258,857 BTC is left to mine - around 10.7% of the total bitcoin supply.
However, a significant portion of bitcoin currently in circulation may have been lost forever through various means. According to Chainalysis, 3,700,000 BTC has not moved from its address in five years or more. The crypto-analysts deems this as 'lost bitcoin'.
Data breaches, hard drive failures, and misplaced keys led to or 20% of all circulating bitcoin sitting in wallets likely to never be accessed again.
When will the last bitcoin be mined?
Of course, the amount of BTC not mined and yet to enter circulation is continuously growing smaller.
While 10% of BTC does not seem like much - especially given the 18 million that has already been mined - the final bitcoin will not be mined until approximately 7 May 2140.
This is due to a phenomena known as bitcoin halving. Every 210,000 blocks, the amount of bitcoin rewarded per block is halved.
Currently, rewards are 6.25 BTC per block following a halving in May 2020. When bitcoin first started, rewards were 50 BTC per block.
As a new halving occurs every four years, by 2032 each block will reward less than 1 BTC.