Bitcoin’s mining ecosystem is sending a powerful signal in June 2019 — even as the cryptocurrency’s price experiences a short-term pullback from the $9,300 level, the network’s underlying security metrics are breaking records. Mining difficulty has just hit an all-time high of 7.46 trillion, representing an 11.26% increase that underscores a dramatic influx of computational power securing the Bitcoin blockchain.
This divergence between price action and mining fundamentals is catching the attention of analysts and investors alike, offering a compelling narrative about the long-term health of the Bitcoin network.
TL;DR
- Bitcoin mining difficulty reached a new all-time high of 7.46T on May 31, 2019 — an 11.26% jump
- Average network hashrate has climbed to 45.76 EH/s, with further growth expected
- Token Insight estimates hashrate could grow 30-50% by year-end, reaching 59-68 EH/s
- ViaBTC mining pool recorded a 50% increase in hashrate
- New-generation ASIC miners are being deployed across major mining operations
Record Mining Difficulty Signals Network Strength
On May 31, 2019, Bitcoin’s mining difficulty adjustment mechanism kicked in with a significant upward revision, pushing the difficulty level to an unprecedented 7.46 trillion. This 11.26% increase from the previous epoch is one of the largest single adjustments in recent memory and reflects the sheer volume of mining hardware being pointed at the Bitcoin network.
The Bitcoin protocol automatically adjusts difficulty every 2,016 blocks — roughly every two weeks — to maintain a target block time of approximately 10 minutes. When more miners join the network and blocks are found faster than expected, difficulty rises to compensate. The magnitude of this particular adjustment tells us that mining operations are expanding aggressively.
According to a comprehensive report by Token Insight titled “Cryptocurrency Mining Industry Quarterly Report,” the first and second quarters of 2019 have been characterized by consistent difficulty increases. The report notes that “the last bull market period of BTC leads to a large remnant of hash power,” and that new chip manufacturing capacity from Samsung and TSMC is being brought online to meet demand.
Hashrate Growth Accelerates
The network’s average hashrate now stands at 45.76 exahashes per second (EH/s), a figure that would have been unimaginable just two years earlier. To put this in perspective, each exahash represents one quintillion hash computations per second. The Bitcoin network is now performing calculations at a rate that dwarfs the combined computing power of the world’s traditional financial systems.
Several factors are driving this surge. Mining pools are reporting significant increases in their operational capacity. ViaBTC, one of the largest Bitcoin mining pools globally, recorded a 50% increase in hashrate — a clear indicator that large-scale operations are either expanding existing facilities or bringing new ones online.
The deployment of next-generation ASIC (Application-Specific Integrated Circuit) miners is also contributing to the hashrate boom. Newer models from manufacturers like Bitmain and MicroBT offer substantially higher hash rates per unit of electricity consumed, making mining more profitable even at current price levels around $7,688 per BTC.
Miners Return After 2018 Winter
The mining difficulty surge tells a story of recovery. During the brutal bear market of 2018, when Bitcoin’s price plummeted from nearly $20,000 to below $4,000, many mining operations became unprofitable. Rigs were shut down en masse, particularly in regions with higher electricity costs. The difficulty adjusted downward multiple times, reflecting the exodus of miners from the network.
The 2019 price recovery — with BTC rallying from around $3,400 in February to over $9,000 by May — has brought miners flooding back. The economics of mining have improved dramatically: at $7,688 per BTC, even older-generation ASIC hardware can operate profitably in regions with moderate electricity costs, while newer equipment generates substantial margins.
However, analysts caution that the hashrate increase does not necessarily mean all previously shut-down rigs are back online. Instead, a combination of new ASIC deployments and expanded operations from well-capitalized mining firms appears to be the primary driver.
Projections: 59-68 EH/s by Year End
Token Insight’s quarterly report offers two scenarios for the remainder of 2019. Under conservative estimates, BTC mining hashrates could grow by 30% to approximately 59 EH/s, with difficulty rising to 8.31T. In the optimistic scenario, hashrate could surge by as much as 50% to reach 68 EH/s, pushing difficulty to 9.59T.
These projections factor in the anticipated delivery schedules for new mining hardware, the expansion of mining facilities in regions like China’s Sichuan province (which benefits from cheap hydropower during the rainy season), and the ongoing professionalization of the mining industry.
The network is already operating at the upper bounds of what was considered possible just 18 months ago, and the trajectory suggests that the second half of 2019 could see Bitcoin’s mining infrastructure reach new milestones.
Unconfirmed Transactions and Network Congestion
Despite the increased mining power, the network has experienced some congestion. At one point on May 31, unconfirmed transactions in the mempool reached approximately 25 million — a reminder that transaction demand is also rising alongside mining capacity. Users sending or receiving BTC may experience slightly longer confirmation times during peak periods, though the difficulty adjustment mechanism should help normalize block times in subsequent epochs.
Why This Matters
The record mining difficulty is a fundamentally bullish signal for Bitcoin’s long-term prospects. When miners invest heavily in infrastructure — deploying expensive ASIC hardware and committing to long-term electricity contracts — they are expressing confidence in Bitcoin’s future value. The security of the Bitcoin network is directly proportional to its hashrate, and each new difficulty record makes the network more resistant to attacks.
The divergence between Bitcoin’s short-term price pullback and the relentless increase in mining difficulty is particularly noteworthy. While traders focus on daily price movements, miners are making multi-million dollar capital expenditure decisions based on their expectations for years ahead. The message from the mining community is clear: they believe Bitcoin’s best days are still ahead.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments carry significant risk. Always conduct your own research before making investment decisions.
11.26% difficulty jump in one adjustment is massive. that 50% ViaBTC hashrate increase matches what we were seeing on the ground with S17 deployments
45 EH/s and Token Insight projecting 59-68 EH/s by year end. bullish on network security but bearish on small miners surviving the squeeze
price pulling back from 9300 while difficulty hits ATH. classic divergence that usually precedes a big move up