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Hashmal

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.

Key Features

  • 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.

Usage Tips

  • 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.

Documentation

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.

License

GPLv3.