Fidelity Challenges Fears Over Bitcoin’s Long-Term Security
Bitcoin's long-term security does not depend solely on block rewards, according to a new research report from Fidelity Digital Assets, which argues that rising miner revenue, transaction fees and market incentives continue to strengthen the network even as issuance declines.
Summary:
- Fidelity says Bitcoin’s security extends beyond block subsidies.
- Miner revenue has risen despite lower BTC issuance after halvings.
- The firm argues attacks remain economically impractical.
The report challenges one of the most persistent criticisms of Bitcoin – that successive halving events will eventually undermine miner incentives and make the blockchain vulnerable to attack.
Fidelity Challenges the “Security Budget” Narrative
The report, authored by Fidelity Digital Assets analyst Daniel Gray, examines one of Bitcoin’s longest-running debates: whether repeated halving events eventually weaken network security by reducing miner rewards.
Every four years, Bitcoin’s protocol cuts the block subsidy paid to miners in half. Since the April 2024 halving, miners receive 3.125 BTC per block, continuing a predetermined issuance schedule that ultimately caps Bitcoin’s supply at 21 million coins.
Critics have long argued that shrinking block rewards could eventually reduce mining participation, lowering hash rate and making the network more vulnerable to attacks.
Fidelity reaches a different conclusion.
Rather than viewing block subsidies as Bitcoin’s only security mechanism, the report argues that miner incentives are supported by several economic forces, including transaction fees, Bitcoin’s market value and competition among miners. Together, these factors continue to make honest participation significantly more profitable than attacking the network.
Miner Revenue Has Continued to Grow
One of Fidelity’s central arguments is that miner economics have improved despite successive halvings.
While Bitcoin-denominated issuance has fallen by roughly 94% since the network launched, average daily miner revenue measured in U.S. dollars has increased dramatically as Bitcoin’s price appreciated over time.
According to the report, average daily miner revenue has risen from roughly $26,300 during Bitcoin’s first halving cycle to more than $40.2 million today, illustrating that price appreciation has historically more than offset declining issuance.
The report argues this trend demonstrates that network security should not be evaluated solely by the number of newly minted BTC tokens. Instead, miners respond to total economic rewards, which include both block subsidies and transaction fees valued in dollars.
Fidelity also notes that Bitcoin’s fixed supply creates a unique incentive structure. Unlike traditional commodities, where higher prices typically encourage additional production, Bitcoin’s issuance schedule cannot be accelerated regardless of demand, meaning stronger adoption primarily affects price rather than supply.
Attack Costs Remain Prohibitively High
The report also examines two commonly discussed attack scenarios: double-spend attacks and transaction censorship.
Fidelity concludes that although a theoretical 51% attack remains possible, executing one at Bitcoin’s current scale would require extraordinary resources while offering limited practical benefit.
A successful attacker would need to control the majority of global hash rate while continuously spending enormous amounts on electricity and hardware. Even then, the report argues that such attacks remain economically unattractive because honest miners would likely respond by adding additional computing power as transaction fees increased.
The analysis further notes that Bitcoin’s transparent blockchain makes sustained attacks highly visible. Any attempt to censor transactions or reorganize blocks would likely trigger immediate responses from miners, exchanges and users, increasing both the financial and operational costs facing an attacker.
Short-Term Pressure on Mining Industry Persists
While Fidelity remains optimistic about Bitcoin’s long-term security, the report arrives during a difficult period for mining companies.
Publicly listed miners continue facing compressed margins following the 2024 halving, as lower block rewards combine with higher energy costs and rising competition. Several companies have responded by diversifying into artificial intelligence infrastructure and high-performance computing to generate new revenue streams.
Industry estimates suggest that the transition toward AI infrastructure could require tens of billions of dollars in additional capital, reflecting the significant investment needed to convert traditional mining facilities into AI-ready data centers.
These operational challenges, however, do not alter Fidelity’s broader conclusion that Bitcoin’s security model remains fundamentally resilient.
Institutional Perspective on Bitcoin’s Maturity
The report also reflects a broader shift in institutional thinking around Bitcoin.
Rather than viewing the asset exclusively through the lens of its historical four-year market cycles, Fidelity argues Bitcoin is increasingly behaving like a mature financial asset supported by structural adoption and long-term capital allocation.
As institutional ownership expands and the market continues evolving, the firm believes concerns surrounding Bitcoin’s “security budget” have become increasingly theoretical.
Instead, Fidelity concludes that the network’s economic design continues to reward honest participation while making attacks prohibitively expensive, reinforcing Bitcoin’s position as one of the world’s most secure decentralized payment networks despite declining block subsidies.
Technical Outlook
Bitcoin was trading near $60,200 at the time of writing after briefly reclaiming the psychologically important $60,000 level.
On the 15-minute chart, BTC remains caught between its major moving averages. Price is trading above the 20-day and 50-day moving averages, currently around $60,060, while continuing to struggle below the 100-day moving average near $60,230. The 200-day moving average, positioned around $60,065, is providing nearby support, leaving Bitcoin compressed within a relatively tight technical range.
Momentum indicators remain mixed. The Relative Strength Index (RSI) has eased to around 53 after approaching overbought territory earlier in the session, suggesting bullish momentum has moderated without turning decisively bearish.
A sustained move above the 100-day moving average could strengthen the case for a retest of recent highs near $60,500-$60,800. Conversely, losing the cluster of support around the 20-, 50- and 200-day moving averages could expose Bitcoin to another test of the $59,800-$60,000 support zone.
The short-term technical picture remains neutral, with price consolidating as investors assess whether improving long-term fundamentals, such as those outlined in Fidelity’s research, can outweigh ongoing macroeconomic uncertainty and pressure on the mining industry.
The information presented in this article is intended for informational purposes only and should not be interpreted as financial, investment, or trading advice. Coinspress.com does not promote or advocate for any particular investment strategy, asset, or cryptocurrency project. Cryptocurrency markets are highly volatile and unpredictable – always perform your own research and seek guidance from a qualified financial professional before making any investment decisions.
Alexander Zdravkov
Reporter at CoinsPress
Alexander Zdravkov is a market analyst and crypto journalist with interests in economics, broader financial markets and digital assets. His journey into crypto began more than four years ago, driven by a fascination with the rapid evolution of blockchain technology and the transformative potential of decentralized finance. He began analyzing market cycles and identifying emerging trends before they reach the mainstream. He holds a degree in International Relations - a background that helped shape his broader perspective on global economics, geopolitics, and the interconnected nature of modern financial markets. Whether covering the latest developments in the crypto sector or exploring broader macroeconomic themes, Alexander focuses on giving readers context rather than simply repeating headlines. During his career, he has authored more than 10,000 articles covering cryptocurrencies, traditional finance, and global market developments. His work spans everything from Bitcoin and altcoins to macroeconomic trends influencing risk assets worldwide.
