joinmarket-clientserver

Bitcoin CoinJoin implementation with incentive structure to convince people to take part

View the Project on GitHub JoinMarket-Org/joinmarket-clientserver

JoinMarket requires Python >=3.8, <3.13.

Notes on upgrading, binaries and compatibility

(You can ignore this whole section if starting from scratch).

Notes on upgrading versions generally:

If you just want the latest version in a new directory, go to the releases page.

If you are upgrading from an older version, just update using git: git pull origin master, or git fetch; git checkout tags/<tagname> for a specific tagged release, then rerun the installation process as described below. This will only work if the latest commit, or the tag, is actually newer in version number, than what was there already.

Installation on Linux

WARNING: This manual process is more difficult; the install.sh script is recommended, please go back to the README unless you’re sure you need to do this.

To install everything (client and server), install these packages:

sudo apt-get install python3-dev python3-pip python3-venv git build-essential automake pkg-config libtool libffi-dev libssl-dev

(+ libsodium-dev if you can find it, else build after)

(to build libsodium after):

git clone https://github.com/jedisct1/libsodium.git
cd libsodium
git checkout tags/1.0.18
./autogen.sh
./configure
make check
sudo make install
cd ..

Then install this repo:

git clone https://github.com/Joinmarket-Org/joinmarket-clientserver.git
cd joinmarket-clientserver

Then:

python3 -m venv jmvenv
source jmvenv/bin/activate

At this point you should see (jmvenv) at the beginning of your command prompt.

Then build and install a local copy of libsecp256k1 for python-bitcointx:

mkdir -p deps
cd deps
git clone https://github.com/bitcoin-core/secp256k1.git
cd secp256k1
git checkout v0.5.0
./autogen.sh
./configure --prefix JM_ROOT --enable-module-recovery --enable-experimental --enable-module-ecdh --enable-benchmark=no
make
make check
make install
cd ../..

NOTE: JM_ROOT must be replaced with the venv directory you’ve just created, so it will be ~/joinmarket-clientserver/jmvenv if you installed to your home directory.

Installing packages to run everything in-one:

NOTE: It is very important to have activated the virtual environment before running this step. Otherwise, pip install will fail, you may be tempted to re-run it with sudo pip install which will cause problems in the future.

pip install .[services]

If you have installed this “full” version of the client, you can use it with the command line scripts as explained in the usage guide.

Installation on macOS

WARNING: This manual process is more difficult; the install.sh script is recommended, please go back to the README unless you’re sure you need to do this.

1) Install Apple Command Line Tools xcode-select --install 2) Install Homebrew /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" 3) Install automake, libtool, and libsodium brew install automake libtool libsodium 4) Build secp256k1 git clone https://github.com/bitcoin-core/secp256k1 cd secp256k1 git checkout v0.5.0 ./autogen.sh ./configure --enable-module-recovery --disable-jni --enable-experimental --enable-module-ecdh --enable-benchmark=no make make check sudo make install cd .. rm -rf secp256k1 5) Clone the joinmarket-clientserver repo. git clone https://github.com/Joinmarket-Org/joinmarket-clientserver cd joinmarket-clientserver 6) Create virtual environment “jmvenv” sh python3 -m venv jmvenv source jmvenv/bin/activate At this point you should see (jmvenv) at the beginning of your command prompt.

7) Setup joinmarket-qt pip install .[gui] 8) Start joinmarket-qt cd scripts python joinmarket-qt.py

Installation on Windows

Before starting, note you need either (a) Bitcoin Core installed on Windows or (b) use a remote connection to Bitcoin Core specified in the joinmarket.cfg (explained at the end of this section).

If (a), then note the following two points:

Installing Bitcoin Core

If you haven’t done so yet, install Bitcoin Core, version 25.1 or newer, as described here. After starting it for the first time, it will start the Initial Block Download. JoinMarket cannot be used until this is finished. More information on that can be found here.

Configuring Bitcoin Core

Bitcoin Core needs to be configured to allow JoinMarket to connect to it. From the Settings menu choose Options and click Open Configuration File. Add server=1, save and close the file. After that restart Bitcoin Core.

There are currently two choices for installing on Windows; one, directly installing on Windows, requiring the manual addition of a libsodium dependency, or, two, using Ubuntu via the WSL mechanism (which may require additional setup to make the Qt GUI work).

1) Installation directly on Windows

2) Installation using WSL

Installation directly on Windows

This section is for doing a full command line install, on Windows.

First, if you have not done so, install Python - specifically, the latest Python 3 version. Make sure to choose to install pip during the installation (it should be included automatically, but you can choose the custom installation option to choose it).

Be sure to choose the option that allows python to be in your PATH variable (you are prompted to do this at the end of the install).

Install Joinmarket, choosing the zip file of the latest release. You should check the .asc signature file on the zip that you download.

Unzip the joinmarket-clientserver-x.x.x (where x.x.x is the release number) in any appropriate location.

Using the command prompt in Administrator mode, go to that directory and run the commands:

pip install joinmarket[services]

(replace services with gui for Joinmarket-Qt).

The final step is to manually add the libsodium dependency, as mentioned. Do the following:

Download the file at https://www.nuget.org/api/v2/package/libsodium and rename it to .zip so that you can unzip it. Once unzipped, find the libsodium.dll file at runtimes\win-x64\native\libsodium.dll and copy it into C:\Windows\System (note this will require Admin rights).

At this point Joinmarket should be ready to run both in command line and Joinmarket-Qt form (using python joinmarket-qt.py from the \scripts subdirectory of joinmarket-clientserver).

From here, go to Configuring Joinmarket below.

Installation using WSL

note: The following method requires Windows 10 version 1607 or later.

Enable Windows Subsystem for Linux

note: a more detailed guide can be found here.

  1. Open the Control Panel and navigate to Programs, Programs and Features, Turn Windows features on or off.
  2. Select Windows Subsystem for Linux and click OK.
  3. When asked, choose to restart.
Install Ubuntu from the Microsoft Store
  1. Open the Microsoft Store, search for Ubuntu 24.04.1 LTS and click Get.

    note: other distributions are available, but this is the only one tested

  2. When finished downloading click Launch.
  3. A window should pop up, telling your Installing, this may take a few minutes...
  4. After installation is done, you’ll be asked to provide a UNIX username and UNIX password. This will be the administrator account for the Ubuntu installation.
  5. Finish the installation with updating the software within Ubuntu by typing the command sudo apt update && sudo apt upgrade -y. When asked, type the password provided earlier.
Installing JoinMarket

At this point you have an (almost) fully featured Linux installation on Windows and you can install JoinMarket using the instructions in the readme file or Installation on Linux section of this file.

Once you have finished installing the program via one of the two above methods for Windows, the final step is to configure Joinmarket:

Configuring JoinMarket

Lastly we must configure JoinMarket to allow it to connect to Bitcoin Core. Refer to this section in the usage guide to generate a joinmarket.cfg file using scripts/wallet-tool.py.

Edit your joinmarket.cfg file (at ~/.joinmarket in Ubuntu if you used WSL, or in C:\Users\<your username>\AppData\Roaming\joinmarket if not) and replace the following lines in the section [BLOCKCHAIN]

rpc_user = bitcoin
rpc_password = password

with

#rpc_user = bitcoin
#rpc_password = password
rpc_cookie_file = <path to the Bitcoin Core data directory>/.cookie

The location of the data directory was chosen when Bitcoin Core was first run. The default is C:\Users\<your username>\AppData\Roaming\Bitcoin. In Ubuntu this would be /mnt/c/Users/<your username>/AppData/Roaming/Bitcoin. Assuming your username is Alice the full line would be

rpc_cookie_file = /mnt/c/Users/Alice/AppData/Roaming/Bitcoin/.cookie

Running JoinMarket-Qt

If you installed directly on Windows, this should work normally, as explained in the usage guide

If you installed using WSL, the following configuration is necessary:

note: you need to have installed JoinMarket with Qt support (see this section in the readme file)

  1. In Ubuntu, install additional dependencies sudo apt install libgl1-mesa-glx.
  2. Download and install MobaXterm. This program needs to be running before you can start JoinMarket-Qt. It requires no additional configuration.
  3. Open WSL-Ubuntu session in MobaXTerm. Go to JoinMarket directory and run source jmvenv/bin/activate to activate the Python virtual environment.
  4. You can now start JoinMarket-Qt as described here. If you find that the program crashes with qt.qpa.plugin: Could not load the Qt platform plugin, you can add Qt5 dependencies with sudo apt install qtbase5-dev and try again.

Alternative/custom installation:

Installing the daemon separately

Just do

python setupall.py --daemon

Then, you can run the daemon on its own with

cd scripts; python joinmarketd.py <port number>

The reason for doing this may be either (1) to run command-line scripts provided here, but in a separate process from the daemon; or, (2) to run a separate (e.g. wallet plugin) codebase to do the bitcoin operations.

In the former case you will need still to install the local packages:

python setupall.py --client-bitcoin

and then edit your joinmarket.cfg section DAEMON, setting no_daemon = 0.

The latter case applies to the Electrum plugin (not currently operational), see here.

There, you need to install the client code (without Joinmarket’s bitcoin):

python setupall.py --client-only

Docker Installation

The Dockerfile provided builds a minimal Docker image which can help in getting started with a custom Docker setup. An example of building and running the wallet-tool.py script:

docker build -t joinmarket-test ./
docker run --rm -it joinmarket-test bash -c "cd scripts && python3 wallet-tool.py --help"

A new Docker image can be built using joinmarket-test as a base using FROM joinmarket-test. See Docker documentation for more details.

Development (or making other changes to the code)

If you are a developer or you plan on modifying the code (for example to add customizations), do not run the python setupall.py commands above. Instead run:

python setupall.py --develop

The normal installation (--daemon or --client-bitcoin) would install the JoinMarket packages to the virtual environment’s site-packages directory. This would mean any changes you make to the local code would not have effect until the packages are reinstalled.

Using --develop causes a .egg-link file to be added to site-packages for each package. The .egg-link file acts like a symlink pointing to the local code. This means any changes you make to the code will have effect immediately.