Is Crypto Mining Halal? Proof-of-Work, Energy and the Faith View

Ask three scholars whether proof-of-work mining is permissible and you can get three answers, partly because a lot of people arguing about it have never looked closely at what a miner actually does. So start there. Once the mechanism is clear, the question of whether crypto mining is halal under proof-of-work rules, and what the energy footprint does to that answer, gets a lot more tractable.

What a proof-of-work miner actually does

A Bitcoin (BTC) miner spends its whole day guessing, and the guessing is the point. The machine takes a candidate block (a batch of pending transactions, a timestamp, a reference to the previous block) and runs it through SHA-256 twice, along with an arbitrary number called a nonce. If the resulting hash happens to fall below a target value set by the network, the block is valid and gets broadcast. If not, the miner changes the nonce and hashes again. Modern ASICs do this hundreds of trillions of times per second, and the network as a whole crossed roughly 800 exahashes per second in early 2026, with a reported all-time high above 830 EH/s in June.

The network adjusts the target every 2,016 blocks so that a block is found roughly every ten minutes regardless of how much hardware is competing. The winner collects a block subsidy (currently 3.125 BTC per block after the April 2024 halving) plus whatever transaction fees the block carries.

Two things follow that matter for the fiqh. First, the work has a real function: it is what makes rewriting history expensive, which is the entire security model. Second, the reward is genuinely uncertain for any individual participant, which is why most miners join pools and take a proportional share instead of lottery-style payouts.

Proof-of-stake is a different animal entirely. There is no energy race, validators post collateral instead, and the scholarly debate there runs along completely different lines. We cover that split separately in the crypto screening section.

Is crypto mining halal? What the scholars actually say

The honest summary is that the authorities are split, and they are split at a level below mining, on whether the underlying coin is legitimate wealth (mal) at all.

The permissive camp treats mining as a straightforward service contract. The classical category people reach for is ju'alah, a unilateral promise of reward to whoever accomplishes a defined task. Ju'alah tolerates more uncertainty than a standard hire contract precisely because the outcome is not guaranteed, which maps neatly onto a miner who may hash all day and find nothing. The Fiqh Council of North America has stated that mining and accepting payment for that effort, including payment in the coin itself, is permissible. Mufti Muhammad Abu Bakar's widely circulated 2018 working paper reached a similar conclusion on Bitcoin's status as property. Malaysia's Securities Commission Shariah Advisory Council resolved in 2020 that digital assets meeting its criteria can be traded and held, which implicitly leaves room for producing them.

The prohibitionist camp starts upstream. Mufti Taqi Usmani and scholars associated with Karachi's Darul Uloom have argued that Bitcoin lacks intrinsic value and functions primarily as a speculative instrument, so it does not qualify as mal mutaqawwim (legally valued property). Egypt's Dar al-Ifta issued a prohibitive fatwa in 2018 under Grand Mufti Shawki Allam, citing gharar and the absence of state backing. Turkey's Diyanet took a similar line in 2017. If the coin is not valid wealth, then producing it is not valid labor, and the ju'alah argument never gets off the ground.

Doctrine versus inference

These two layers are worth separating clearly, because the doctrine here is thin and uncontested: riba is prohibited (Quran 2:275-279), gharar-heavy contracts are void, and unlawfully taking others' property is forbidden (Quran 4:29). None of those texts mention hashing.

Everything else is inference. Whether SHA-256 grinding counts as productive labor, whether a block subsidy is a fee or a form of newly created money, whether a coin with no issuer can be mal, all of that is ijtihad applied to facts that did not exist when the classical manuals were written. Anyone who tells you mining is definitively halal or definitively haram with the confidence of quoting a verse is overstating the case. The mechanism is new and the scholarly record is a decade old.

The energy question, and why Catholics ask it differently

Cambridge's CBECI put Bitcoin's annualized electricity draw in the range of roughly 170 to 180 TWh in early 2026, somewhere around 0.7 to 0.8 percent of global electricity production. Cambridge's mid-2025 sustainability update also revised the fuel mix upward, reporting a slim majority of mining energy coming from sustainable sources once nuclear is counted alongside renewables, with natural gas the largest single input and coal down in the high single digits. Efficiency gains have been real: hashrate grew far faster than consumption over the past year as newer ASICs came online.

Classical Islamic jurisprudence has a concept for this, israf (wasteful excess), but it is a weak lever against mining specifically. Israf is generally applied to personal consumption and to spending without benefit. Where a process produces something the market values and the participants consented to, most jurists would not classify the energy use as israf, though a minority argue the marginal social benefit is too low to justify the draw.

Catholic screening treats this very differently, and this is where the frameworks genuinely diverge rather than just using different vocabulary. The USCCB's Socially Responsible Investment Guidelines, expanded at the November 2021 General Assembly to incorporate Laudato Si', name protection of the environment as one of the policy areas alongside protecting human life, promoting human dignity, reducing arms production, pursuing economic justice, and encouraging corporate responsibility. The framing is stewardship of creation and, crucially, the disproportionate burden environmental harm places on the poor. The guidelines also lean heavily on active ownership rather than pure exclusion, which is awkward for Bitcoin, since there is no issuer to file a shareholder resolution with.

For a listed miner like Marathon Digital (MARA), Riot Platforms (RIOT) or Core Scientific (CORZ), a Catholic investor does have an engagement target and a disclosure trail: power purchase agreements, curtailment participation, whether the fleet is sited on stranded gas or on flared methane that would otherwise vent. Those specifics do real work in a USCCB-aligned analysis in a way they do not in a Shariah analysis.

Stolen electricity is the one place everyone agrees

The edge case turns out to be the least contested question in the whole discussion. Illegal power tapping for mining has become a large-scale enforcement problem. Malaysia's utility Tenaga Nasional Berhad has linked thousands of premises to electricity theft for mining over recent years, with reported cumulative losses in the billion-dollar range. Thai authorities dismantled multiple networks in 2025, seizing thousands of machines and estimating tens of millions of dollars in losses to the provincial electricity authority. Chinese courts handed down multi-year sentences to operators who tapped an oilfield grid. Tajikistan wrote a dedicated criminal-code article for it.

Under Shariah this is not a close call. Ghasb (usurpation of another's property) voids the legitimacy of the resulting earnings regardless of what you think about Bitcoin's status as mal. A permissive scholar who considers mining a valid ju'alah would still hold that revenue funded by stolen input is unlawful gain. Jewish law reaches the same result through gezel and specifically through the prohibition on benefiting from theft. Catholic teaching gets there through the seventh commandment and restitution. Biblically responsible investing gets there through basic prohibitions on dishonest gain. The tradition-independence of this answer is a useful sanity check on the rest of the analysis.

There is a practical version of the test too, since if a miner's realized power cost looks impossibly low relative to regional industrial rates and the company will not disclose its counterparties, you have a diligence problem before you have a religious one.

Where the five frameworks land

Islamic. Contested at the level of the asset, not the activity. If your scholarly reference accepts BTC as mal, mining reads as permissible labor, subject to lawful inputs and to the standard warnings against excessive leverage in mining equities. If your reference follows the Usmani position, the question is moot.

Catholic (USCCB). No exclusion aimed at mining. Environmental stewardship under Laudato Si' pushes toward scrutiny of the energy source and toward engagement with listed operators rather than a blanket screen.

Biblically responsible investing. The six core BRI exclusion categories center on abortion, alcohol, gambling, pornography, tobacco and related lifestyle advocacy. Mining does not touch any of them directly. A BRI screen is far more likely to flag a mining company for what its treasury or its side businesses do, or for a gambling-adjacent revenue line, than for hashing itself.

Jewish (halakhic). Poskim have engaged crypto mostly around whether it counts as currency or as a commodity, which matters for ribbis, for ma'aser kesafim and for chametz sales. Bais HaVaad and similar batei din have addressed those questions. Mining itself raises bal tashchit (the prohibition on needless destruction) as a discussion point, though most treatments consider purposeful commercial energy use outside its scope.

LDS. No institutional ruling on mining. The relevant counsel is older and broader, since Church leaders have long cautioned against speculative ventures that promise wealth without corresponding productive value, and the Church has repeatedly warned members away from get-rich-quick schemes and debt. A leveraged miner bought for a price move sits uncomfortably against that counsel in a way that a modest position held as a long-term holding does not.

What to actually do with this

Separate the three exposures, because they screen differently. Holding BTC is one question. Owning a listed miner is a second, and it brings equity screening back into play: leverage, interest-bearing debt and interest income are live issues under the AAOIFI-style tests, where debt above roughly 30 percent of market cap and impure income above 5 percent are the usual fail lines. Several large miners have carried convertible debt loads that put them well past that threshold. Running hardware yourself is a third, and there the questions are your power contract, your local law and whether you are financing the rigs with an interest-bearing loan.

If you own a miner, read the debt footnote before the hashrate slide. If you hold a mining ETF, look through to the constituents, since a fund can pass a light screen while individual holdings do not. If you are choosing between frameworks, our framework comparison lays out where the five diverge, and the screening methodology documents which ratios and revenue tests each one applies.

The Bottom Line

Proof-of-work mining is a legitimate service under the ju'alah framing, and the Fiqh Council of North America has said so plainly, but the permissibility of mining is downstream of whether your scholarly reference accepts the coin as mal in the first place, which is exactly where Usmani and Dar al-Ifta part company with the permissive camp. Energy is a secondary issue in Shariah analysis and a primary one under USCCB creation-care screening, so the same miner can look different depending on which lens you bring. The one point every tradition converges on is that stolen electricity voids the earnings, which makes power sourcing the first thing to verify on any mining operation or listed miner you are considering.

This is educational research rather than a religious ruling or personalized investment advice, so confirm anything you plan to act on with a qualified scholar or a licensed advisor.