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About 929,465 bitcoins are still sitting there, waiting to be dug out. And at the current pace, the last one won’t hit circulation until somewhere around 2140.
That’s not a glitch or a delay. It’s the point. Bitcoin’s code was written this way from the start — a deliberate, almost mechanical slowdown baked into the network’s DNA since the first block in 2009. Right now, miners pull in 3.125 BTC for every block they add to the chain. That number gets cut in half every 210,000 blocks, roughly every four years. The original reward was 50 BTC per block. It’s been halved several times since. And it’s not stopping.
The network has already mined roughly 20.07 million BTC as of block height 962,570. That leaves the remaining coins at just 4.43% of the total 21 million cap. Bitcoin crossed the 95% issuance mark in December 2025. The last 5% will take longer to produce than the first 95% took combined.
What the Next Two Halvings Actually Mean
The next halving, expected around 2028, drops the block reward to 1.5625 BTC. Then in 2032, it falls again to 0.78125 BTC. Those aren’t big numbers. And the annual new supply shrinks fast — from roughly 164,250 BTC per year now to approximately 82,125 BTC after 2028. That’s a clean 50% cut to fresh supply hitting the market each year.
For miners, that’s a direct hit to revenue. Their income comes from two places: newly minted coins and transaction fees. Right now, fees account for only 0.69% of recent mining revenues. That’s basically nothing. But as the subsidy keeps shrinking, fees will have to carry more weight. Whether they actually will is unclear — it depends on how much activity the network sees, what users pay, and whether demand for block space holds up.
The hashrate tells part of the story. Total computing power on the network hit roughly 900 exahashes per second over a recent weekend. That’s a massive number, and it shows the mining sector hasn’t given up. But high hashrate doesn’t mean high profits. Mining runs on thin margins. When bitcoin’s price doesn’t rise fast enough to offset the halving, weaker machines get turned off, revenues drop, and the whole sector feels it.
Lost Coins, Thin Margins, and the Real Supply Picture
Here’s something that doesn’t get enough attention: the actual circulating supply is probably lower than 20.07 million. Lost private keys, dead hard drives, forgotten wallets — some chunk of already-mined bitcoin is gone forever. No one knows exactly how much. So the real market supply could be meaningfully less than the numbers suggest. That tightens things further.
Bitcoin’s design also has a quirk worth knowing. The maximum supply isn’t a clean 21 million. Because the protocol can’t create fractions below a satoshi — Bitcoin’s smallest unit — the theoretical hard cap lands at approximately 20,999,999.9769 BTC. Minor difference, but it shows how precise the whole system is.
The difficulty adjustment keeps everything running regardless. Every roughly two weeks, Bitcoin recalibrates how hard it is to mine a block. If hashrate drops — say, because low-margin miners shut off — the adjustment makes it easier, so blocks keep coming at a steady pace. It’s a self-correcting mechanism that’s kept the network stable through every price crash and every halving so far.
Some public mining companies have already started pivoting. Faced with a hashprice bear market and shrinking subsidies, a handful of operators have shifted resources toward artificial intelligence infrastructure. That’s a pretty significant signal about where mining economics are heading — or at least where some players think they’re heading.
The pressure won’t let up. Each halving tightens the squeeze on miners who haven’t upgraded their machines or cut their energy costs. Less efficient rigs get retired. The ones that survive are the ones running lean, with cheap power and newer hardware. It’s basically a slow, ongoing shakeout.
The 2028 Halving as the Next Real Test
The 2028 halving is the one to watch. It’s the first one that cuts supply below 100,000 BTC per year in new issuance. That’s a threshold the market hasn’t seen before. Whether bitcoin’s price rises enough to compensate miners — and whether transaction fees grow fast enough to fill the gap — will shape how the network looks heading into the 2030s.
Scarcity is a selling point, sure. But scarcity alone doesn’t move prices. Adoption, regulation, liquidity, and sentiment all factor in. And miners can’t eat narrative. They need revenue.
After 2140, when the subsidy hits zero, transaction fees become the only thing keeping miners online. That’s still a long way off. But the path there runs straight through 2028, and the network’s fee market will need to grow considerably before that final block gets mined.
Transaction fees currently cover 0.69% of mining revenue.
Frequently Asked Questions
How many bitcoins are left to mine?
As of block height 962,570, approximately 929,465 bitcoins remain to be mined under the 21 million supply cap.
When is the next Bitcoin halving and what will the reward be?
The next halving is expected around 2028, cutting the block reward from 3.125 BTC to 1.5625 BTC per block.
Why It Matters
The protracted timeline for the mining of the remaining Bitcoin highlights the asset's deflationary nature, which contrasts sharply with fiat currencies that can be printed in response to economic needs. This scarcity is a fundamental aspect of Bitcoin's appeal as a store of value, potentially influencing investor behavior and market dynamics as the cryptocurrency approaches its capped supply. Furthermore, the gradual release of these coins may affect market liquidity and price volatility, especially as demand fluctuates over the century-long mining horizon.
