Hashmal is an IDE for Bitcoin transaction scripts and a general cryptocurrency development toolbox. Its primary purpose is to make it easier to write, evaluate, and learn about transaction scripts.

Hashmal is intended for cryptocurrency developers and power users.

• Write scripts in human-readable form.
• Observe the stack as scripts are executed.
• See explanations of script operations as they are evaluated.
• Generate transaction scripts using templates.
• Deserialize and build transactions.
• Deserialize blocks.
• Communicate with full nodes or block explorers to retrieve blockchain data.
• Encode and decode addresses.

• See Tools > Plugin Manager in the menubar for details on what each tool does.
• You can manage tool layouts via Tools > Settings in the menubar.
• When typing opcodes, you can omit the OP_ prefix for opcodes other than OP_1, OP_2, ...OP_16. For example, DUP and OP_DUP do the same thing.
• When editing scripts, put something in double quotation marks to ensure it's interpreted as text rather than hex data.
• You can quickly evaluate the script you're working on via Script > Evaluate in the menubar.

To run the application you must use / have installed:

• Python 2.7
• PyQt4

You can install PyQt4 if you use Anaconda with the following command

conda install pyqt=4

If you use Debian / Ubuntu, you can use the following command

sudo apt install pyqt4-dev-tools

Installation instructions for other platforms: https://www.riverbankcomputing.com/software/pyqt/download

After that, use setup.py to build / install the application

python setup.py install

This will install the external module requirements listed in requirements.txt too

See the file doc/usage.adoc for basic instructions. See the Hashmal wiki on Github for details.

The file doc/plugins.adoc has some information on the plugins system that Hashmal uses.

GPLv3.