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Why is Bitcoin difficulty surging at its fastest pace since 2021?

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Why is Bitcoin difficulty surging at its fastest pace since 2021? - 1

Bitcoin’s mining difficulty has climbed to 144.40 trillion (T) at block 937,524, marking one of the sharpest accelerations in network competition since the 2021 bull cycle.

Summary

  • Bitcoin’s mining difficulty has climbed to 144.40 trillion at block 937,524, marking one of the fastest accelerations in network competition since the 2021 bull market.
  • Total hashrate has jumped to 996.99 EH/s, just shy of the 1 zettahash per second (ZH/s) threshold, reflecting a sharp expansion in mining power through 2024 and 2025.
  • While rising hashrate and difficulty strengthen network security and signal miner confidence, rapid growth could squeeze margins for smaller operators if Bitcoin’s price fails to keep pace.

At the same time, Bitcoin’s (BTC) total hashrate has surged to 996.99 EH/s, hovering just below the symbolic 1 zettahash per second (ZH/s) milestone.

For context, Bitcoin difficulty is an adjustment mechanism that ensures blocks are mined roughly every 10 minutes. When more computing power joins the network and hashrate rises, the protocol automatically increases difficulty to maintain that steady issuance schedule.

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Bitcoin hashrate refers to the total computing power being used by miners to process transactions and secure the network. A higher hashrate means more machines are competing to validate blocks, making the network stronger and more resistant to attacks.

The two metrics are tightly linked, and together they help explain why the network is seeing its fastest pace of growth in years.

Bitcoin hashrate near 1 ZH/s

The hashrate chart shows a steep climb through 2024 and 2025, with computational power accelerating sharply in recent months. After dipping during prior market downturns, the network has staged a powerful recovery, pushing toward 1,000 EH/s or nearly 1 ZH/s a historic threshold for Bitcoin.

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Why is Bitcoin difficulty surging at its fastest pace since 2021? - 1

When hashrate rises rapidly, it signals that miners are deploying more machines and bringing new facilities online. This expansion is typically driven by improved profitability, access to capital, and infrastructure scaling.

The current pace mirrors the aggressive buildout last seen during the 2021 rally.

Bitcoin difficulty follows higher

Bitcoin’s difficulty adjusts roughly every two weeks to ensure blocks are mined every 10 minutes. As hashrate rises, the protocol increases difficulty to maintain balance.

Why is Bitcoin difficulty surging at its fastest pace since 2021? - 2

The difficulty chart reflects that dynamic. After a brief pullback from a recent peak near the 150T level, difficulty remains elevated at 144.40T, a level that represents a dramatic increase from just a few years ago. The slope of the curve over the past year is among the steepest on record.

This sharp upward trend signals intense competition among miners, with more computational power chasing a fixed block reward.

Historically, sustained increases in hashrate and difficulty are seen as long-term bullish indicators. They reflect miner confidence and make the network more secure and resilient.

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However, rapid difficulty growth can compress margins, particularly for smaller or higher-cost operators. If Bitcoin’s price does not keep pace with rising competition, weaker miners may face pressure, potentially leading to consolidation.

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Crypto World

US Supreme Court Tariff Ruling Steals The Show As Bitcoin Sticks To $67,000

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US Supreme Court Tariff Ruling Steals The Show As Bitcoin Sticks To $67,000

Bitcoin (BTC) saw choppy price action after Friday’s Wall Street open as markets reacted to the US Supreme Court decision on President Donald Trump’s trade tariffs.

Key points:

  • The US Supreme Court rules that certain US tariffs are illegal, sparking a modest risk-asset response.

  • US inflation data further cuts market hopes of a March interest-rate cut.

  • Bitcoin price action stays rooted in a firm range, with consensus seeing bears “in control.”

Supreme Court ruling attacks Trump tariffs

Data from TradingView showed $67,000 forming a focus for BTC price action, while US stocks gained.

BTC/USD one-hour chart. Source: Cointelegraph/TradingView

The overall risk-asset response was muted however, as the Supreme Court ruled that some tariffs remained legal. In the firing line were those implemented under the International Emergency Economic Powers Act (IEEPA).

“IEEPA does not authorize the President to impose tariffs,” the Court wrote in its 170-page ruling.

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Despite this, talk quickly surfaced over tariff refunds, with trading resource The Kobeissi Letter putting the potential total at $150 billion.

“Today’s Supreme Court ruling will be referenced for decades to come,” it added in a thread on X.

The event overshadowed earlier US macro data, which missed expectations. The Personal Consumption Expenditures (PCE) Index, known as the Federal Reserve’s “preferred” inflation gauge, hit its highest levels since late 2023 at 3%.

US PCE data (screenshot). Source: Bureau of Economic Analysis

GDP data for Q4 2025, meanwhile, came in much lower than anticipated at 1.4% growth instead of 3%.

The numbers further reduced the odds of the Fed cutting interest rates at its March meeting, with data from CME Group’s FedWatch Tool now seeing a mere 4% chance of a 0.25% reduction.

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Fed target rate probabilities for March FOMC meeting (screenshot). Source: CME Group

On Thursday, trading resource Mosaic Asset Company expressed hope that stocks could still perform well despite the gloomy rates outlook.

“Even if the Fed goes an extended period on hold with interest rates, it’s worth remembering that financial conditions are still running much looser than average,” it summarized in an update

“That should remain a tailwind for the bull market for now, even if the S&P 500 doesn’t reflect it. The combination of loose conditions and strong market breadth means a positive backdrop for position trading (for now).”

Bitcoin failing to escape “downwards trajectory”

Bitcoin traders continued to have few illusions about the precarious state of the market.

Related: Bitcoin ‘roadmap to bottom’ says $58.7K Binance cost basis now crucial

In his latest analysis, trader Jelle said that bears were still “in control.”

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Trader and analyst Rekt Capital emphasized the importance of the 200-week exponential moving average (EMA), along with Bitcoin risking flipping it to resistance.

“History suggests Weekly Closes below the 200-week EMA followed by bearish retests of the EMA into new resistance can spur on the next phase of Bearish Acceleration to the downside,” he wrote on Thursday.

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BTC/USD one-week chart with 200 EMA. Source: Rekt Capital/X

Earlier in the week, trader and commentator Skew suggested that the local BTC price range was indicative of “developing ‘value.’”

“Clear respected market supply around $70K & Clear tested market demand around $65K. This essentially points out the obvious which is a sustained move above $70K or below $65K will lead to trending price action,” he told X followers.

“Since the trend is in a downwards trajectory currently, this makes $72K quite significant as many shorts will place stops above & also it acts as a near term invalidation if cracked.”