Technology | Security | Making

Funding Open-Source Development with Cryptocurrency Mining

tags: +blockchain +foss

The Pirate Bay recently made the news by mining the cryptocurrency Monero in users’ browsers without their knowledge or consent. They did this in an effort to reduce their reliance on advertising, whose utility as a revenue-generator is increasingly being undermined by ad-blocking software.

Around the same time, CBS Showtime was maliciously compromised to likewise mine cryptocurrency in users’ browsers, stoking fears that “cryptojacking” attacks will become commonplace in the future. Moreover, a new company called Coinhive began offering in-browser mining as a service, possibly furthering the likelihood of “legitimate” in-browser mining becoming mainstream.

In this article, I will discuss the pros and cons of these mining trends, and propose what I consider to be a superior alternative to this style of ad-hoc, in-browser mining.

"Uncoordinated" Mining

To establish a vocabulary, let’s refer to The Pirate Bay’s style of ad-hoc, in-browser mining as “uncoordinated” mining. Let’s discuss its pros and cons:

The Good

The good of uncoordinated mining is obvious: it provides another revenue stream for publishers that are increasingly unable to pay their bills with advertising. And, while it may be tempting to dismiss publishers’ fiscal concerns as “not our problem”, I believe we do so at our own peril.

Without straying too far off-topic into politics, I believe that a causal line can be drawn that connects:

  1. The rise of ad-blockers
  2. The financial incentives to write “clickbait” articles at the expense of journalistic integrity
  3. The decline in public trust of news media (Pew research)
  4. The present state of US politics

I believe that we are collectively depriving a handful of important institutions of the resources required to do their work, and that this has manifested real harm in the broader world. Uncoordinated mining provides these institutions with a potential revenue stream that users may find more palatable than advertisements.

The Bad

Regardless, I believe that uncoordinated, on-page mining is sub-optimal for publishers for a few reasons. Chief among those reasons is that on-page mining is necessarily performed in JavaScript, which is itself poorly-suited to mining in that it:

  1. Is single-threaded
  2. Executes more slowly than compiled code
  3. Has limited access to GPUs

(Informed readers may argue that the above are less true now than in the past. Regardless, I consider these points to be at least “true enough” when comparing JavaScript to other options.)

The uncoordinated model suffers from an innate drawback as well: a reader will only mine on behalf of a publisher for as long as the publisher’s site remains open in a browser. And, in some common cases (like news sites and blogs), that interval is likely brief.

The Ugly

Uncoordinated mining has significant disadvantages for users as well:

  1. Expense (without consent): Mining consumes resources, including electricity (and thus battery life) and bandwidth - the latter being potentially expensive on mobile devices. It is unethical to extract these costs from users without consent.

  2. Risk of damaging hardware: Proof-of-work mining typically generates a lot of heat, which could damage certain types of devices. (Ultrabooks and mobile devices are poor platforms for mining, for example.)

  3. Risk of degrading performance: Uncoordinated mining would almost certainly degrade a user’s computing experience, as each open browser tab would compete for resources.

In my opinion, the net result of all of the above is that uncoordinated, in-browser mining is sub-optimal for publishers, and outright hostile to users. But is there an alternative?

Coordinated Mining

What’s the alternative to uncoordinated mining? Coordinated mining!

Rather than relying on uncoordinated, ad-hoc, in-browser mining, I propose the creation of software whose purpose is to provide a coordinated hub for mining cryptocurrency on behalf of third-party beneficiaries. I will devote the remainder of this article to describing how I believe such an application could function.

Going forward, let’s eschew bikeshedding and unimaginatively refer to this application as “mine”.

I propose that the mine software:

  1. Enable desktop users and server administrators to donate unused computing cycles to mine cryptocurrency on behalf of multiple third-party benefactors.

  2. Be able to utilize both spare CPU and GPU cycles.

  3. Be able to mine multiple types of cryptocurrencies (a corollary of the above).

  4. Provide configurable resource-consumption limits.

Regarding implementation details, I further propose that mine be written as two components: a standalone cli-based application that implements the mining “guts”, and a GUI wrapper around the former. This will allow the software to run headlessly on servers and graphically on desktops.


In my opinion, using an application to perform “coordinated” mining has significant advantages over “uncoordinated”, in-browser mining:

  1. User participation would be opt-in and consensual.

  2. A miner implemented in a compiled language (C++, Rust, etc.) would have full access to system resources, and could achieve high performance.

  3. Donors could mine on behalf of beneficiaries even when not consuming their content. (I.e., you could mine on behalf of Wikipedia without having Wikipedia open in a browser tab.)

  4. A “headless” miner could run even on servers - many of which sit idle for long periods of time. (My personal webserver is nearly always 99% idle.)

Prior Work - the BOINC Client

I believe there exists a well-known application that can serve as a template for mine - the BOINC client.

If you’re not familiar with the project, BOINC (“Berkeley Open Infrastructure for Network Computing”) allows users to donate processor time (both CPU and GPU) to scientific research. (You may recall the Playstation 3’s “Folding at Home” - this was a BOINC project.)

The BOINC client allows users to precisely define how and when their hardware is to be donated. Here is a screenshot of its configuration panel:

BOINC control panel

Designing mine similarly would make it unobtrusive and painless to use in many common cases. (I run BOINC 100% of the time while working, and it doesn’t perceptibly degrade my computing experience.)

Another relevant feature of BOINC is that it allows a user to participate in multiple projects simultaneously; the BOINC Manager equitably allocates processing time automatically. mine should behave the same way.


I envision mine having an interface that looks similar to this (expressed in Docopt format):


Donate unused CPU/GPU computing cycles to cryptocurrency mining on behalf of
worthy organizations.

  mine [options]

  -h --help  Show this screen.
  --version  Show version.
  -c --config=<path>       Path to config file. [default: "$XDG_HOME/mine.yaml"]
  -b --beneficiary=<name>  Mine for a specific beneficiary only.
  -o --output=<type>       Output type. One of: "text" or "json".
  --colorize               Colorize output.


I envision mine being configured via a configuration file ($XDG_HOME/mine.yaml) with values resembling the following:

# CPU mining configuration
  # usage limits
    cores: 3               # maximum number of cores to use
    percent: 25%           # maximum percent of CPU time to use

  # mining suspend triggers
    when_in_use: true      # suspend CPU mining when computer is "in use"
    when_on_battery: true  # suspend CPU mining when on battery

# GPU mining configuration
  # usage limits
    number: 1              # maximum number of GPUs to use
    percent: 25%           # maximum percent of GPU time to use

  # mining suspend triggers
    when_in_use: true      # suspend GPU mining when computer is "in use"
    when_on_battery: true  # suspend GPU mining when on battery

# Array of organizations to which you'd like to donate. Mining time will (by
# default) be equally divided among all beneficiaries.
  - eff:
      stratum: some-stratum-server  # the stratum server to which to connect
      currency: some-currency       # the currency to mine ("xmr", "eth", etc.)
      wallet: some-wallet-address   # the wallet into which to deposit mined coins
      # `percent` allows the user to manually allocate mining time for a
      # specific organization. Unallocated mining time will be divided equally
      # among beneficiaries for whom `percent` is unspecified. (Allocated
      # mining time may not exceed 100%.)
      percent: 30%

  - mozilla:
      stratum: some-stratum-server
      currency: some-currency
      wallet: some-wallet-address

  - wikipedia:
      stratum: some-stratum-server
      currency: some-currency
      wallet: some-wallet-address

  - the-linux-foundation:
      stratum: some-stratum-server
      currency: some-currency
      wallet: some-wallet-address

(Note that a real implementation would likely require configuration options for technical minutia like stratum connection details. Those details are beside the point here, so I won’t address them now.)

Beyond the Web

So far, I have primarily discussed how coordinated mining could benefit publishers that operate a website. However, it’s important to note that the coordinated mining model could benefit any organization - regardless of whether it is web-based.

I believe this could be particularly transformational for open-source software, which is notoriously hard to monetize and (literally) dangerously under-funded.

What could be accomplished if an application like mine shipped (in an “opt-in” way) with all versions of Ubuntu?

What could be accomplished if the social norm became to configure servers to financially support the software on which they depend?

Or, moving away from software entirely - what impact could be made in “meatspace” with a few config file changes?

# ...


  # ...

  - my-university:
      stratum: some-stratum-server
      currency: some-currency
      wallet: some-wallet-address

  - my-childs-school:
      stratum: some-stratum-server
      currency: some-currency
      wallet: some-wallet-address

  - my-local-hackerspace:
      stratum: some-stratum-server
      currency: some-currency
      wallet: some-wallet-address

  - my-favorite-twitch-streamer:
      stratum: some-stratum-server
      currency: some-currency
      wallet: some-wallet-address

# ...


Writing an application like mine is not technically daunting: its core functionality could be kludged together with existing mining software and a few shell scripts. The purpose of the mine software would be to reduce the friction involved in deployment, and thus (hopefully) promote adoption.

And that will be the hard part: promoting adoption. It will likely involve a few steps:

  1. Collectively deciding whether this is a good idea
  2. If “yes”, propagating the meme (in the academic sense) that this should be done
  3. Shipping the relevant software

This post intends to begin “Step 1”. With that said, I request feedback on the ideas presented in this article. If you have something to say, please tweet it to me at @chrisallenlane. Let’s figure this out.

In my next article, I’m going to propose a web standard for donation discoverability that complements - but does not strictly depend upon - what has been discussed here.