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BlackDragonCoin integration/staging tree


Copyright (c) 2009-2013 Bitcoin Developers
Copyright (c) 2011-2013 Litecoin Developers
Copyright (c) 2014 BlackDragonCoin Developers

What is BlackDragonCoin?

BlackDragonCoin is a lite version of Litecoin using scrypt-jane with adaptive N-factor as a proof-of-work algorithm.


Block target time:

  • 20 seconds before 1000th block
  • 2 minutes after 1000th block


  • 6 Confirmations per transaction, 1000 confirmations for mined blocks

Block rewards:

  • Block 1- 200: 1 + 1d4
  • Block 200-50,000: 100 + 1d20 (20 roll is critical hit: block reward doubles and miner gets another 100 bonus coins)
  • Block 50,000-100,000: 50 + 1d16 (+ 1/20 chance to get double rewards)
  • Block 100,000-150,000: 30 + 1d8 (+ 1/20 chance to get double rewards)
  • Block 150,000-200,000: 20 + 1d6 (+ 1/20 chance to get double rewards)
  • Block 200,000+: 10 + 1d4 (+ 1/20 chance to get double rewards)
  • DGW2 as retargeting method (difficulty recalculating for each new block)
  • Premine: 1.5 % of 1 year mining period for coin development and support

Random rewards delayed by one block.

The rest is the same as Litecoin. For more information, as well as an immediately useable, binary version of the BlackDragonCoin client sofware, see http://forum.blackdragoncoin.com


BlackDragonCoin is released under the terms of the MIT license. See COPYING for more information or see http://opensource.org/licenses/MIT.

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 BlackDragonCoin 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 BlackDragonCoin.


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 BDC_QT_TEST=1 -o Makefile.test blackdragoncoin-qt.pro
make -f Makefile.test