Flappy 5.5 new codebase

While we haven’t maintained a Qt build for Linux from the Flaps repo since the Flappy 5.5 fork, a modern codebase forked from Litecoin has wallets readily available.

You can download a Qt wallet built for Ubuntu 16.04 here. Sync using the Flappy 5.5 bootstrap.dat. If you have trouble connecting to other nodes after the sync from disk, try instating the included flappycoin.conf.

You may run either flappycoin-qt for a GUI or the command-line flappycoind + flappycoin-cli.

On Linux the bootstrap file, configuration file, and your wallet.dat are to be placed under the ~/.flappycoin user folder.

Building from source

For other Linux distros, you are best off building from source. See docs/ for full instructions, but it basically comes down to installing dependencies such as Qt 5, followed by:

git clone; cd flappycoin

This should be less complex than the build processes used by the 2014 codebase in older codebases like below.

Bug reports and patches are welcome via GitHub.

Flappy 4.1 archive

1) Get the SP4.1 bootstrap and unzip it.


2) Download flappycoin.tar.gz and unpack too:

tar xvf flappycoin.tar.gz
cd flappycoin/

3) Check out the README.txt and make sure you’ve installed all necessary dependencies.

4) Run the Qt wallet once:


then close it. This should create your initial ~/.flappycoin configuration folder.

5) Copy both flappycoin.conf and bootstrap.dat into your new configuration folder:

cp flappycoin.conf ~/.flappycoin/
cp ../bootstrap.dat ~/.flappycoin/

6) Run the Qt wallet again.


Alternatively if you know what you’re doing with command-line and don’t require a GUI, feel free to run flappycoind by itself and communicate with it via RPC.

If you’re on a different distro, it’s advised to build the software from source. See doc/ for instructions on installing dependencies and building flappycoind. To build the Qt wallet, see doc/readme-qt.rstDon’t attempt to run or configure. makefile.unix is already configured and ready to go even if it might require setting some variables on the command line.