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Bitcoin's 4 year cycles: a closer look at predictions

Bitcoin Cycles | Debating Knowledge of 4-Year Trends in 2017 and 2021

By

Samuel Lee

Aug 25, 2025, 10:29 PM

2 minutes reading time

A chart showing Bitcoin's price fluctuations during four-year cycles, highlighting peaks in 2017 and 2021, illustrating community predictions.
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A recent discussion among veterans in the crypto community raises questions about the widely acknowledged four-year Bitcoin cycles. With predictions ranging from $150,000 to $1 million, many people are revisiting past cycles to discern their impact and how long they have been understood.

Everything Comes Full Circle

The notion of Bitcoinโ€™s four-year cycle is linked to block reward halving, a mechanism that has been in place since Bitcoinโ€™s inception. As explained by various community members, this halving cuts the reward for mining Bitcoin in half every four years, theoretically inflating its value when demand holds steady. A user recalls: **"Yes, they knew the timing, but no one believed it would happen. Thatโ€™s how the losses came."

Interestingly, comments reveal mixed perspectives on when this theory gained traction. For some, understanding this pattern seems to have emerged in 2013-2014, while others strictly associate it with the events of 2017 and 2021.

"It was definitely common knowledge in 2021. Not sure about 2017," remarked a seasoned investor.

Current Cycle Observations

While many are confident the cycle theory is still relevant, some believe its predictive power is diminishing. As one commenter pointed out, **"The supply shock now is much less impactful compared to ancient times when rewards per block were much greater."

** This sentiment echoes concerns over whether current economic conditions might further blur the lines of this seeming consistency.

Caution Ahead

Despite optimistic predictions, skepticism remains prevalent. A user likened the forecasts to fortune-telling, questioning the validity of targets such as $1 million. "Thatโ€™s like an oracle saying your son will live gloriously until age 100," they remarked, hinting at the inevitable unpredictability of market cycles.

Meanwhile, discussions around timing entry and exit strategies have sparked debates. People advise a slow and steady approach for those planning to buy and sell through potential peaks and valleys.

Key Insights

  • โ— Many believe knowledge of cyclical trends dates back to the early days of Bitcoin.

  • ๐Ÿ” The impact of halving on price is debated, with some claiming it has less force now than before.

  • ๐Ÿ’ฐ Predictions of soaring prices draw skepticism from a portion of the community.

The crypto market continues to evolve. Whether Bitcoin's cycle theory persists or fades, one truth remains: uncertainty is a core aspect of investing in cryptocurrency.

Future Price Possibilities

Thereโ€™s a strong chance Bitcoin will continue to attract significant interest, especially as halving events approach. Experts estimate that prices could reach between $60,000 and $150,000 by late 2026, driven by investor excitement and potential supply constraints. However, if the current economic climate worsens, the probability of a sharp decline increases to about 30%. This equilibrium suggests that while cycles may persist, unexpected global events could disrupt traditional patterns, making investment in Bitcoin as volatile as ever.

Lessons from the Dot-Com Era

Looking back at the dot-com boom offers a fresh perspective on todayโ€™s cryptocurrency trends. Just as many tech startups surged with audacious promises of revolutionizing commerce, Bitcoin and its peers are similarly captivating investors with lofty predictions of transforming finance. However, the majority of those startups faded into obscurity when the hype died down. This aligns with the current Bitcoin predictions, which might seem equally likely to either skyrocket or fall flat, reminding us that exuberance can often outpace reality, much like sending an untested rocket to the moon.