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Exploring bitcoin's 21 million cap and mining rewards

Bitcoin's Finite Supply | The Countdown to Zero Reward

By

Sophia Patel

Jan 25, 2026, 03:17 PM

Edited By

Emily Harper

Updated

Jan 25, 2026, 09:40 PM

2 minutes estimated to read

A graphic showing the Bitcoin mining process with decreasing rewards and a 21 million cap in the background.

A vibrant conversation among people highlights Bitcoin's unique mining mechanics. Though the cap is set at 21 million coins, mining wonโ€™t just grind to a halt. The block reward halves roughly every four years, with mixed opinions emerging on this gradual transition.

How Bitcoin Mining Continues

It's a widespread belief that Bitcoin will be fully mined in the future, but this isn't quite accurate. The reality is that rewards continue to shrink rather than disappear instantly. The current mining reward is 6.25 BTC, and by the 2140s, the last Bitcoin will be mined as block rewards taper off completely.

One commenter pointed out: "The block subsidy stops after the 32nd halving when it would be less than 1 sat." This means mining might persist with minute rewards, but never exceed 21 million total coins.

Common Misunderstandings About Bitcoin

  1. Gradual Reward Reduction: People acknowledge that although rewards diminish over time, many still donโ€™t quite grasp Bitcoin's divisibility. "Most people don't even know BTC can be divided," noted one participant, highlighting the general lack of awareness.

  2. Transaction Fees Rise: As block rewards shrink, transaction fees are anticipated to become the primary incentive for miners. This reality is becoming clearer in discussions surrounding Bitcoin's financial future.

  3. Diverse Opinions on Sustainability: The chat showcases different sentiments about mining profitability moving forward. Many believe that as the number of mined Bitcoins approaches its cap, the market may respond in unexpected ways.

Soundbites from the Community

"If you split enough times, like 29 or something, it goes under 1 satoshi and thatโ€™s when there wonโ€™t be new bitcoins mined anymore." This raises questions about the future of mining.

Interestingly, some community members argue it reflects a design where it feels finite yet is never really finished.

Key Highlights

  • โ—‡ By 2140, the last Bitcoin will be mined, with rewards ceasing completely.

  • โ–ฝ As Bitcoin mining transitions, fees may represent up to 50% of miners' income by the late 2030s.

  • ๐Ÿ”” "It definitely finishes. In block #6929999, the reward is zero, and itโ€™s zero for every block afterwards." โ€“ a critical remark from a participant.

People remain engaged, eager to see how these transformations could shape Bitcoin's market dynamics. Will miners adapt swiftly enough to maintain profitability against the backdrop of dwindling rewards?

Looking Ahead in Mining Trends

As the scene evolves toward the 2140 milestone, the mining community faces pressing challenges. Those who can optimize their operations with technology may continue to thrive. Demand for Bitcoin could remain strong due to its scarcity, hinting that market activity will likely shift along with the landscape of mining itself.