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Groestlcoin integration/staging tree

Forked from Bitcoin reference wallet 0.8.6

Updated to Bitcoin reference wallet 0.11.0 on August 2015

Updated to Bitcoin reference wallet 0.13.3 on January 2017

Updated to Bitcoin reference wallet 0.16.0 on June 2018

Groestlcoin Core Wallet


The algorithm was written as a candidate for sha3


Copyright (c) 2009-2018 The Bitcoin Core Developers

Copyright (c) 2014-2018 The Groestlcoin Core Developers

What is Groestlcoin?

Groestlcoin is an experimental new digital currency that enables instant payments to anyone, anywhere in the world. Groestlcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Groestlcoin Core is the name of open source software which enables the use of this currency.

For more information, as well as an immediately useable, binary version of the Groestlcoin Core software, see http://www.groestlcoin.org/download.


Groestlcoin Core 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 Groestlcoin 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

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 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 Groestlcoin.

Development tips and tricks

compiling for debugging

Run configure with the --enable-debug option, then make. Or run configure with CXXFLAGS="-g -ggdb -O0" or whatever debug flags you need.


If the code is behaving strangely, take a look in the debug.log file in the data directory; error and debugging message are written there.

The -debug=... command-line option controls debugging; running with just -debug will turn on all categories (and give you a very large debug.log file).

The Qt code routes qDebug() output to debug.log under category "qt": run with -debug=qt to see it.

testnet and regtest modes

Run with the -testnet option to run with "play groestlcoins" on the test network, if you are testing multi-machine code that needs to operate across the internet.

If you are testing something that can run on one machine, run with the -regtest option. In regression test mode blocks can be created on-demand; see qa/rpc-tests/ for tests that run in -regest mode.


Groestlcoin Core is a multithreaded application, and deadlocks or other multithreading bugs can be very difficult to track down. Compiling with -DDEBUG_LOCKORDER (configure CXXFLAGS="-DDEBUG_LOCKORDER -g") inserts run-time checks to keep track of what locks are held, and adds warning to the debug.log file if inconsistencies are detected.