Bitcoin Mining Got 6% Harder. Will Miners Sell?

TL;DR: Bitcoin mining difficulty rose 5.9% while the price slipped about 4%, so each miner earns less per unit of computing power. That squeezes margins but does not force selling by itself. Whether a miner sells depends on its own cost per coin, and that cost varies widely across the industry.

What happened to Bitcoin mining this week?

Mining difficulty went up 5.9% and the price went down. According to 24/7 Wall St., which cites mempool.space data, Bitcoin fell roughly 4% over the two weeks to October 18. It hit a low of $79,676 on October 15 and traded around $82,820 on October 19.

The miner stocks took the worst of it. Over the past month, MARA Holdings fell 31.8%, Riot Platforms fell 32.6% and CleanSpark fell 34.3%, per the same report. Bitcoin itself rose 6.8% over that month.

So the companies that produce the coin are down hard while the coin is up. For an accredited investor eyeing miner shares as a way into crypto, that gap points at what a coin costs to produce rather than what it sells for.

Why does a harder network cut miner profits?

The reward doesn't grow when the work does. As 24/7 Wall St. explains, the protocol adjusts difficulty about every two weeks to keep blocks arriving every 10 minutes. The block reward stays fixed at 3.125 BTC plus fees, so each miner's share shrinks when difficulty rises.

The industry measures that squeeze with hashprice, the expected daily revenue from a fixed amount of computing power. CoinMarketCap reported hashprice at $39.18 and projected that, at an unchanged price, the reset would cut it to about $36.70, below September's low of $37.61.

Measure	Figure	Source
Difficulty change	+5.9%	24/7 Wall St.
BTC price move, two weeks	about -4%	24/7 Wall St.
MARA, one month	-31.8%	24/7 Wall St.
RIOT, one month	-32.6%	24/7 Wall St.
CLSK, one month	-34.3%	24/7 Wall St.
Hashprice now	$39.18	CoinMarketCap
Hashprice after reset (projected, unchanged price)	about $36.70	CoinMarketCap

A miner's power and equipment bills stay put while revenue per machine falls. Difficulty isn't a cost line. It is the reason each machine earns less.

Will miners start selling their bitcoin?

Not automatically. 24/7 Wall St. put it plainly: a 4% price drop pressures margins but doesn't automatically force miners to sell.

What decides it is each miner's cost per coin. CoinMarketCap reports that JPMorgan estimates it costs roughly $85,000 to mine a coin, which puts Bitcoin about 3% below that line. That is an industry-wide estimate, and a single company's real cost can sit well above or below it.

A miner with costs far under the current price can wait out a bad month. One near or above the estimate faces a harder choice between selling coin, issuing shares or borrowing. The reporting this week doesn't say which companies are which, so each company's own filings are the place to look.

Is miner selling the main pressure on the price?

No miner-selling figure appears in the reporting reviewed, so it can't be sized. The only flows the reports put numbers on are ETF flows. 24/7 Wall St. notes that spot Bitcoin funds recorded a net outflow of $82.4 million on October 16, after a $261.5 million outflow two days earlier.

That is the measured selling. Any miner sales would add to it, and until someone publishes a miner-sales number, whether miners will sell remains a question rather than a finding.

How does someone holding miner stock lose money?

Start with the downside. A miner shareholder loses when revenue per machine falls faster than costs. A company that pays its bills by selling coin gives up the asset you thought you were exposed to. Issuing new shares to raise cash dilutes existing holders, and borrowing adds a fixed payment that doesn't shrink when hashprice does.

None of those is reported this week as a fact about a specific company. Each is a question for the filings, the same way a private sponsor's fee stack and a fund's liquidity promise are questions for the offering documents.

What should you watch next?

The next difficulty adjustment, and the early projections disagree. 24/7 Wall St. says mempool.space projects it at around 0.5%, which would suggest new computing power is joining the network more slowly. Cryptonews describes a much larger early estimate and says it is close to a straight extrapolation from a few dozen blocks of a 2,016-block period. Neither is worth much yet.

After that, compare hashprice with the price of Bitcoin. If hashprice keeps sliding while the coin holds, margins are being squeezed on revenue per machine, which is a miner problem rather than a Bitcoin problem. Access is not an edge. Judgment is, and a miner's stock only rewards you if you know what its coins cost. For related reading, see AIN's piece on stablecoins and treasury policy and the argument for selling judgment instead of access.

Common mistakes

The first mistake is reading a falling miner stock as a falling Bitcoin.

The second is assuming one cost number applies to every miner. An industry estimate describes the group, and it says little about the company you hold.

The third is treating a projected difficulty change as a fact, when two outlets published very different projections this week.

FAQ

Will miners stop mining Bitcoin?

None of the reports reviewed mentions a shutdown. Miners with costs well below the current price have room to keep going, and those near the industry estimate of roughly $85,000 per coin have less.

Why is Bitcoin mining getting harder?

Difficulty resets about every two weeks to keep blocks arriving every 10 minutes. When more computing power joins, the network gets harder to mine. This reset was 5.9%, per mempool.space data cited by 24/7 Wall St.

How long does one BTC miner take to make 1 BTC?

That depends on one machine's share of the whole network, and the sources give no figure for it. They do give the reward: 3.125 BTC per block, plus fees, with a block about every 10 minutes.

Is Bitcoin mining even profitable anymore?

It depends on cost per coin. Bitcoin traded near $82,820 on October 19, against a JPMorgan industry estimate of roughly $85,000 per coin, per CoinMarketCap. Miners with lower costs can still earn a margin, and those at or above that estimate cannot.

What to do today

Before you put money into a miner or a miner fund, find the company's cost per coin in its latest filing and compare it with today's price. For more news read this way, sign up for the free AIN briefing.

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