As of October 2–3, 2025, the total Bitcoin network hash rate surpassed 1.05 ZH/s. Mining difficulty increased 5% to 150.84 trillion (T), providing unprecedented computational power that secures the blockchain. Despite this, the hashprice—revenue per petahash—fell below $50, pressuring miners’ profitability. This is particularly challenging for miners with high energy costs.

Bitcoin Mining Difficulty and Hash Rate: What It Means

Mining difficulty adjusts automatically every 2,016 blocks to maintain an average block time of 10 minutes and to secure the network. The adjustment reflects changes in the network’s hash rate. An increasing hash rate indicates more miners joining the network and using more computational power. This strengthens security but also raises hardware and energy costs.

MARA’s Bitcoin Treasury Reaches $6.4 Billion

U.S.-based Marathon Digital (MARA) added 373 BTC in September, bringing its total Bitcoin reserves to 52,850 BTC, valued at approximately $6.4 billion. The company mined 736 BTC during the month, representing 5.2% of total network miner rewards. MARA increased its hash rate by 1% to 60.4 EH/s and activated all mining containers at its Texas wind farm.

MARA produced 218 blocks in September, a 5% increase from the previous month. With a market value of around $7 billion, MARA is the third-largest publicly traded miner.

Cango Reserves Rise to 5,810 BTC

China-based Cango mined and held 616.6 BTC in September, raising its total Bitcoin treasury to 5,810 BTC (~$700 million). The company operates at a 50 EH/s hash rate, efficiently utilizing 89.7% of its capacity. CEO Paul Yu noted that this performance provides a strategic foundation for expansion into high-performance computing (HPC). According to Bitcoin Treasuries, Cango ranks 18th among publicly traded companies.

Bitcoin Price and Market Outlook

Bitcoin is currently trading at $120,373. Public mining companies’ BTC reserves are as follows:

• Strategy (Michael Saylor): 640,031 BTC – $77 billion
• MARA: 52,850 BTC – $6.4 billion
• Tether-backed Twenty One: 43,514 BTC
• Metaplanet: 30,823 BTC
• Bitcoin Standard Treasury: 30,021 BTC

This data highlights that institutional accumulation of Bitcoin continues, with mining companies playing a critical role in the ecosystem.

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The block contained 593 transactions worth a total of $52.6 million. The average transaction size was 0.7987 BTC, and the miner’s reward included the standard block reward of 3.125 BTC plus 0.0042 BTC in transaction fees. 

The miner used Solo CKPool to mine the block. This platform allows individual miners to compete against industrial mining giants. While Solo CKPool enables smaller operations to participate, success in solo mining remains extremely rare, as participants must compete with miners operating large-scale ASIC devices. 

Bitcoin Mining Challenges 

Bitcoin mining difficulty adjusts every 2,016 blocks to maintain an average block time of approximately 10 minutes. This adjustment increases mining difficulty, making solo mining increasingly rare. For example, a miner operating at 1 petahash per second has roughly a 1 in 4.26 million chance of finding a block. 

Currently, Bitcoin mining difficulty stands at 136.04 trillion, near all-time highs, making it extremely difficult for individual miners to find a block. 

Peter Chung, Head of Research at Presto Labs, commented: 

“Among all blockchain networks, none compare to Bitcoin in terms of decentralization. Events like these contribute to that narrative.” 

“A single miner finding a block is as rare as winning a lottery. Large miners and mining pools split tasks among themselves, gaining efficiency and stability. For most participants, joining pools is more practical, providing regular payouts. To make Bitcoin more decentralized, what’s needed are more diverse mining pools.” 

What is Solo CKPool? 

Solo CKPool allows individual miners to mine blocks using their own hardware. In this system, miners who find a block receive the full reward, while those who don’t find one earn nothing. This makes solo mining riskier but offers potentially large rewards when successful. 

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