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Karbo (KRB), wallets, pools and exchangers

The Karbo (Karbovanets) is cryptocurrency of Ukrainian origin, just like Bitcoin but more anonymous and privacy centric with opaque and more analysis resistant blockchain. It is people's electronic cash, not connected to government or officials.

Goal of Karbo project is to create anonymous stablecoin – decentralized cryptocurrency with low price volatility by using new to crypto world techniques of regulating coin supply and its market price.

Key principle of CryptoNote is adaptive parameters. Karbo already has adaptive block size limit and difficulty. In addition to it Karbo will implement adaptive emission, adaptive minimal transaction fee and adaptive monetary deposit interest rate to achieve this goal.

HARDFORK V4 IS SET AT HEIGHT 266000!!! In this hardfork we introduce adaptive minimal transaction fee as first step towards our goal. Information for exchanges and other services how to work with new fees: https://github.com/seredat/karbowanec/wiki/Dynamic-transaction-minimum-fee

Pools operating 'cryptonote-forknote-pool' or compatible software should update Node-Cryptonote-Util to this version: https://github.com/aivve/node-cryptonote-util. The reference pool software is here: https://github.com/Karbovanets/karbo-pool.

Pools operating 'cryptonote-nodejs-pool' should change config on hardfork height. The changes in config are:

"daemonType": "default",
"cnAlgorithm": "cryptonight",
"cnVariant": 0,
"cnBlobType": 0,

The example of Karbo config is here: https://github.com/Karbovanets/cryptonote-nodejs-pool/blob/master/config_examples/karbo.json

Building Karbo

On *nix

Dependencies: GCC 4.7.3 or later, CMake 2.8.6 or later, and Boost 1.55.

You may download them from:

  • http://gcc.gnu.org/
  • http://www.cmake.org/
  • http://www.boost.org/
  • Alternatively, it may be possible to install them using a package manager.

To build, change to a directory where this file is located, and run make. The resulting executables can be found in build/release/src.

Advanced options:

  • Parallel build: run make -j<number of threads> instead of make.
  • Debug build: run make build-debug.
  • Test suite: run make test-release to run tests in addition to building. Running make test-debug will do the same to the debug version.
  • Building with Clang: it may be possible to use Clang instead of GCC, but this may not work everywhere. To build, run export CC=clang CXX=clang++ before running make.

On Windows

Dependencies: MSVC 2013 or later, CMake 2.8.6 or later, and Boost 1.55. You may download them from:

  • http://www.microsoft.com/
  • http://www.cmake.org/
  • http://www.boost.org/

To build, change to a directory where this file is located, and run theas commands:

mkdir build
cd build
cmake -G "Visual Studio 12 Win64" ..

And then do Build. Good luck!

Building for Android on Linux

Set up the 32 bit toolchain Download and extract the Android SDK and NDK

android-ndk-r15c/build/tools/make_standalone_toolchain.py --api 21 --stl=libc++ --arch arm --install-dir /opt/android/tool32

Download and setup the Boost 1.65.1 source

wget https://sourceforge.net/projects/boost/files/boost/1.65.1/boost_1_65_1.tar.bz2/download -O boost_1_65_1.tar.bz2
tar xjf boost_1_65_1.tar.bz2
cd boost_1_65_1

apply patch from external/boost1_65_1/libs/filesystem/src

Build Boost with the 32 bit toolchain

export PATH=/opt/android/tool32/arm-linux-androideabi/bin:/opt/android/tool32/bin:$PATH
./b2 abi=aapcs architecture=arm binary-format=elf address-model=32 link=static runtime-link=static --with-chrono --with-date_time --with-filesystem --with-program_options --with-regex --with-serialization --with-system --with-thread --with-context --with-coroutine --with-atomic --build-dir=android32 --stagedir=android32 toolset=clang threading=multi threadapi=pthread target-os=android --reconfigure stage

Build Karbo for 32 bit Android

mkdir -p build/release.android32
cd build/release.android32
CC=clang CXX=clang++ cmake -D BUILD_TESTS=OFF -D ARCH="armv7-a" -ldl -D STATIC=ON -D BUILD_64=OFF -D CMAKE_BUILD_TYPE=release -D ANDROID=true -D BUILD_TAG="android" -D BOOST_ROOT=/opt/android/boost_1_65_1 -D BOOST_LIBRARYDIR=/opt/android/boost_1_65_1/android32/lib -D CMAKE_POSITION_INDEPENDENT_CODE:BOOL=true -D BOOST_IGNORE_SYSTEM_PATHS_DEFAULT=ON ../..
make SimpleWallet


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