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How much Bitcoin can still be mined today?

Bitcoin’s total supply has been hardcoded to 21 million BTC. It is a limit which cannot be changed unless a protocol change that breaks consensus can be made. The protocol enforces this finite limit, which is fundamental to Bitcoin as a deflationary currency.

In May 2025 there will be approximately 19.6 Million Bitcoin (BTCThe total amount of minerals mined is approximately 93.3%. total supply. This leaves approximately 1.4 millions BTC to be produced, with the remaining coins being mined at a very slow pace.

Bitcoin’s issuance schedule is exponential, and it’s governed by an annual event known as the halving. Bitcoin’s block reward in 2009 was 50 BTC. Every 210,000 blocks — or approximately every four years — that reward is cut in half. 

The early rewards being so high, more than 87% was the supply mined before 2020. Every subsequent halving reduces new supply sharply, so it will be over 100 years before the remaining 6.7% is mined.

According to current estimates, 99% of all Bitcoin will have been mined by 2035, but the final fraction — the last satoshis — won’t be produced until around the year 2140 due to the nature of geometric reward reduction.

It is a combination of artificial scarcity combined with an immutable supply capBitcoin is often compared to physical commodities such as gold. Bitcoin’s price is more predictable than gold. grows Bitcoin’s annual issuance is declining at a rate of around 1.7%.

Did You Know? Bitcoin’s curve of supply isn’t terminal as we know it. It follows an asymptotic trajectory — a kind of economic Zeno’s paradox — where rewards diminish indefinitely but never truly reach zero. By 2140, mining will still continue. At that point, over 99.999% (or 21,000,000 BTC) of all 21 million BTCs will have been distributed.

Bitcoin supply is not limited to the amount of coins that are available.

Although over 93% has been mined of Bitcoin, it doesn’t necessarily mean that all is available. Some of the coins are permanently lost, due to misplaced wallets or hard drives, forgotten passwords and early adopters that never touched them again.

Chainalysis and Glassnode have released estimates. suggest that between 3.0 million and 3.8 million BTC — roughly 14%-18% of the total supply — is likely gone for good. This includes addresses with high visibility, such as the address believed to be owned by Satoshi NakamotoIt is estimated that a single Bitcoin wallet alone contains over 1.1 millions BTC.

The true supply of Bitcoin may actually be 16-17 millions, and not 21,000,000. And because Bitcoin is non-recoverable by design, any lost coins stay lost — permanently reducing supply over time.

Compare that with gold. Around 85% of the world’s total gold supply has been mined — approximately 216,265 metric tons, according to the World Gold Council — but nearly all of it remains in circulation or held in vaults, jewelry, ETFs And central banks. Bitcoins can’t be recovered once lost access has been removed.

Bitcoin’s supply is not only progressively shrinking but also halting to grow over time.

Bitcoin, as it grows, enters a phase of monetary maturity similar to gold, with low issuances, high holders concentrations and an increasing sensitivity on the demand side. Bitcoin goes further. Its supply cap is rigid, its loss rates are permanent and its distribution can be audited by anyone.

There are several possible outcomes.

• Price volatility increases as the available supply is more restricted and more sensitive to demand
• The concentration of value over the long term is higher in those key managers who stay active and secure.
• The premium rate on liquidityWhen actual BTC that is spendable trades for a more effective price than dormant BTC.

This could lead to a split between “circulating BTC” You can also find out more about the following: “unreachable BTC,” With the latter gaining more economic importance in particular times of restricted exchange liquidity or macroeconomic stresses.

When is Bitcoin fully mined?

It’s widely believed that the security of Bitcoin’s network will suffer as block rewards decrease. But in practice, the mining economy is far more adaptive — and much more resilient — than that.

Bitcoin’s mining Incentives are controlled by a loop of self-correction: If mining is unprofitable for miners, they drop off, which triggers difficulty adjustments. The network adjusts the mining difficulty every 2,016 blocks, or roughly once every two weeks. It uses a parameter called nBits. It is important to maintain block times at 10 minutes or less, no matter how many miner are in competition.

If Bitcoin falls in price, or if its reward is too small compared to the operating cost, then less efficient miners quit. The difficulty will fall and the costs for those remaining to mine Bitcoins will be lower. As a result, the system is constantly rebalancing itself to align network participation with incentive levels.

After China, this mechanism has been tried at scale. China banned mining in mid-2021Bitcoin’s hashrate fell by over 50% within a few weeks. But the network kept running without interruption. And within months the hashrate was fully restored as the miners resumed their operations in countries with cheaper energy and favorable regulations.

The idea that lower reward amounts will threaten the security of the network is a misconception. Mining profits are tied to profitability, and not BTC values. As long as the market price supports the cost of hash power — even at 0.78125 BTC per block (post-2028 halving) or lower — miners will continue to secure the network.

The important thing is not whether the mining costs are profitable, but if it remains profitable. Bitcoin’s in-built difficulty adjustment ensures this usually happens.

In a century, even when the reward for a block is approaching zero, it’s likely that the network can still be secured by whichever combination of feesBase incentives and infrastructure efficiency exist at the time. That’s still a long way off. In the meantime, the current system — hashrate adjusts, difficulty rebalances, miners adapt — remains one of the most robust elements of Bitcoin’s design.

Did You Know? After the Runes Protocol was launched on April 20, 2024 the Bitcoin mining community earned $80,000,000 worth of transaction fees in a single working day. This is more than the $25,000,000 earned by block rewards. It was the first time ever in Bitcoin history that the transaction fee alone exceeded block subsidies in the daily miner revenues.

Bitcoin Mining: The Future Energy Consumption

There’s an old myth that the rising price of Bitcoin will lead to endless energy consumption. The profitability of mining, and not just the price, is what limits its use.

The block reward is shrinking, so miners have to find the most cost-effective, greenest power. Hashrates have increased since China banned mining in 2021. migrated to regions like North America and Northern EuropeOperators tap into excess hydro-, wind- and grid energy.

The Cambridge Centre for Alternative Finance estimates that between 52 and 59% Bitcoin mining is now done by the Cambridge Centre for Alternative Finance. runs Renewables or sources with low emissions. 

Regulations are reinforcing This trend has seen several jurisdictions penalizing or offering incentives for fossil fuel-free mining.

Bitcoin is self-regulating. More miners will increase the difficulty. This in turn reduces profit margins. 

Although renewable-based mining has its challenges, the future dystopia of an endlessly expanded fossil-fuelled hashpower is becoming increasingly unlikely.