Key Takeaways
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Bitcoin is nearing a major supply milestone.
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The final coins will take more than a century to mine.
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Scarcity will influence prices — but risks remain.
Bitcoin is approaching a historic milestone signalling it is reaching the end of its tightly controlled supply — the mining of its 20 millionth coin.
At the current block production rate, Bitcoin miners will reach the threshold within days. This means they have already created more than 95% of the total Bitcoin that will ever exist.
The milestone has renewed debate among investors and analysts about Bitcoin’s long-term supply dynamics, its price trajectory and how the network will function as the pace of new issuance slows.
Bitcoin’s underlying protocol caps supply at 21 million coins.
The network issues new tokens roughly every 10 minutes as miners validate transactions and add blocks to the blockchain.
However, the rate of new issuance slows over time.
The network protocol roughly halves the reward miners receive for each block every four years in a process known as a “halving,” a mechanism designed to gradually reduce the flow of new coins entering circulation.
Because of that schedule, producing the final one million Bitcoins will take far longer than the first 20 million.
The network has generated nearly all of its supply in the roughly 17 years since its launch in 2009, but miners are expected to mine the last coins around 2140.
As the supply of new Bitcoin slows, attention is increasingly turning to how the network will sustain the miners that secure it.
Miners currently earn revenue from both newly issued Bitcoin and transaction fees paid by users.
Over time, the system is designed to rely more heavily on transaction fees to compensate miners.
Some fear that if network activity remains limited, fee revenue alone may not be enough to sustain mining operations, potentially eroding incentives to secure the blockchain.
Others argue that rising adoption, higher Bitcoin prices and the development of a competitive fee market will heavily offset the shrinking supply of new coins.
The approaching supply milestone also highlights Bitcoin’s scarcity — a feature many investors view as central to its value proposition.
Many Bitcoin loyalists argue that if demand continues to grow while new supply slows, the imbalance could support higher prices over the long term.
Bitcoin has historically experienced strong price swings around events that reduce new supply.
Past halvings have coincided with sharp increases in Bitcoin’s price and periods of heightened volatility.
