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Copyright (c) 2009-2014 Bitcoin Developers
Copyright (c) 2011-2014 Litecoin Developers
Copyright (c) 2013-2014 Dr. Kimoto Chan
Copyright (c) 2009-2014 The DigiByte developers
Copyright (c) 2013-2014 Monacoin Developers

What is Monacoin?

Monacoin is a lite version of Bitcoin using scrypt as a proof-of-work algorithm.

  • 1.5 minute block targets
  • subsidy halves in 1051k blocks (~3 years)
  • 105,120,000 total coins
  • 50 coins per block
  • Digishield difficulty retarget

For more information, as well as an immediately useable, binary version of the Monacoin client sofware, see


Monacoin is released under the terms of the MIT license. See COPYING for more information or see

Development process

Developers work in their own trees, then submit pull requests when they think their feature or bug fix is ready.

If it is a simple/trivial/non-controversial change, then one of the Monacoin development team members simply pulls it.

If it is a more complicated or potentially controversial change, then the patch submitter will be asked to start a discussion (if they haven't already) on the mailing list.

The patch will be accepted if there is broad consensus that it is a good thing. Developers should expect to rework and resubmit patches if the code doesn't match the project's coding conventions (see doc/coding.txt) or are controversial.

The master branch is regularly built and tested, but is not guaranteed to be completely stable. Tags are created regularly to indicate new official, stable release versions of Monacoin.


Testing and code review is the bottleneck for development; we get more pull requests than we can review and test. Please be patient and help out, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code.

Unit tests for the core code are in src/test/. To compile and run them:

cd src; make -f makefile.unix test

Unit tests for the GUI code are in src/qt/test/. To compile and run them:

qmake BITCOIN_QT_TEST=1 -o Makefile.test
make -f Makefile.test