Blakecoin 0.15.21

SegWit signaling schedule: Blakecoin mainnet versionbits signaling starts on May 4, 2026 00:00:00 UTC (1777852800) and times out on May 4, 2027 00:00:00 UTC (1809388800). Blakecoin signals one week before the aux chains.

About Blakecoin

Blakecoin is the original Blake-256 coin and parent chain for Photon, BlakeBitcoin, Electron, Universal Molecule, and Lithium. It is a digital currency using peer-to-peer technology with no central authority.

• Uses the Blake-256 hashing algorithm
• Based on Bitcoin Core 0.15.2
• Uses the autotools build system (./configure + make)
• Ships release packages for Ubuntu 20.04, 22.04, 24.04, 25.10, Windows, macOS, and Ubuntu 22+ AppImage
• Website: https://blakecoin.org

Network Info
Algorithm	Blake-256 (8 rounds)
Block time	3 minutes
Block reward	50 BLC
Difficulty retarget	Every 20 blocks
Default port	8773
RPC port	8772
Max supply	7,000,000,000 BLC

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Quick Start

git clone https://github.com/BlueDragon747/Blakecoin.git
cd Blakecoin
bash ./build.sh --help

For most users, downloading a prebuilt release from GitHub Releases is the simplest path. Use build.sh to build the release artifacts locally.

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Build Options

bash ./build.sh [PLATFORM] [TARGET] [OPTIONS]

Platforms:
  --native          Build natively on this machine (Linux or macOS)
  --appimage        Build portable Linux AppImage (requires Docker)
  --windows         Cross-compile for Windows from Linux (requires Docker)
  --macos           Cross-compile for macOS from Linux (requires Docker)

Targets:
  --daemon          Build daemon only
  --qt              Build Qt wallet only
  --both            Build daemon and Qt wallet (default)

Docker options:
  --pull-docker     Pull prebuilt Docker images from Docker Hub
  --build-docker    Build Docker images locally from repo Dockerfiles
  --no-docker       For --native on Linux: build directly on the host

Other options:
  --jobs N          Parallel make jobs

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Platform Build Instructions

Native Linux

bash ./build.sh --native --both

• On supported Ubuntu hosts, build.sh auto-detects the OS version and installs missing packages automatically
• Native Linux release packaging targets Ubuntu 20.04, 22.04, 24.04, and 25.10
• Native Linux builds write directly to outputs/
• --both refreshes the full Ubuntu-native wallet files directly in outputs/
• --daemon refreshes the daemon-side Linux files directly in outputs/
• --qt refreshes the Qt wallet files directly in outputs/
• Native Ubuntu outputs are bare same-Ubuntu binaries that rely on host-installed native packages
• Native Ubuntu builds bootstrap Berkeley DB 4.8.30.NC into a local repo cache and always link wallet builds against that copy
• Each Ubuntu output folder gets its own install-deps.sh and README.md for the non-BDB host runtime packages

Linux (Docker)

Use --pull-docker to pull prebuilt images from Docker Hub, or --build-docker to build them locally from the Dockerfiles in docker/.

bash ./build.sh --native --both --pull-docker
bash ./build.sh --native --qt --pull-docker
bash ./build.sh --native --daemon --pull-docker
bash ./build.sh --native --both --build-docker

AppImage

bash ./build.sh --appimage --pull-docker

• Uses sidgrip/appimage-base:22.04
• Produces a self-contained AppImage in outputs/AppImage/
• The output folder keeps Blakecoin-0.15.21-x86_64.AppImage, README.md, and build-info.txt
• Intended for Ubuntu 22.04+
• Direct launch on Ubuntu 22.04.5 needs sudo apt install libfuse2
• Direct launch on Ubuntu 24.04.4 and 25.10 needs sudo apt install libfuse2t64
• If the host is missing that package, AppImage runtime startup fails with dlopen(): error loading libfuse.so.2
• Fallback launch remains --appimage-extract-and-run

Windows

bash ./build.sh --windows --both --pull-docker

• Runs on Linux with Docker using sidgrip/mxe-base:latest
• Writes loose cross-built outputs to outputs/Windows/

macOS

There are two macOS paths in this repo:

Cross-build from Linux

bash ./build.sh --macos --both --pull-docker

• Runs on Linux with Docker using sidgrip/osxcross-base:latest
• Produces artifacts in outputs/Macosx/

Native build on macOS

bash ./build.sh --native --both

• Uses Homebrew on the Mac host
• build.sh installs missing Homebrew dependencies automatically
• Native macOS builds write to outputs/Macosx/

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Output Structure

outputs/
├── AppImage/
│   ├── Blakecoin-0.15.21-x86_64.AppImage
│   ├── README.md
│   └── build-info.txt
├── Macosx/
│   ├── Blakecoin-Qt.app
│   ├── blakecoin-cli-0.15.21
│   ├── blakecoin-qt-0.15.21
│   ├── blakecoin-tx-0.15.21
│   ├── blakecoind-0.15.21
│   └── build-info.txt
├── Ubuntu-20/
│   ├── README.md
│   ├── blakecoin-256.png
│   ├── blakecoin-cli
│   ├── blakecoin.conf
│   ├── blakecoin.desktop
│   ├── blakecoin-qt
│   ├── blakecoin-qt-bin
│   ├── blakecoin-tx
│   ├── blakecoind
│   └── install-deps.sh
├── Ubuntu-22/
├── Ubuntu-24/
├── Ubuntu-25/
└── Windows/
    ├── blakecoin-cli-0.15.21.exe
    ├── blakecoin-qt-0.15.21.exe
    ├── blakecoin-tx-0.15.21.exe
    ├── blakecoind-0.15.21.exe
    └── build-info.txt

For Ubuntu native builds, the current host's final wallet files land in outputs/Ubuntu-20/, outputs/Ubuntu-22/, outputs/Ubuntu-24/, or outputs/Ubuntu-25/ depending on the detected Ubuntu release. These are bare Ubuntu-native binaries, so each Ubuntu folder gets its own install-deps.sh, README.md, and blakecoin.conf. Berkeley DB 4.8.30.NC is bootstrapped into a local repo cache by the builder rather than being installed from apt.

For Windows cross-builds from Linux, the output bundle lands in outputs/Windows/, using .exe binaries plus bundled .dll files, qt.conf, platforms/qwindows.dll, and build-info.txt.

For native macOS builds, the current host's daemon tools, Blakecoin-Qt.app, and the raw blakecoin-qt-0.15.21 binary all land in outputs/Macosx/.

For AppImage builds, outputs/AppImage/ keeps Blakecoin-0.15.21-x86_64.AppImage, README.md, and build-info.txt.

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Docker Images

When using --pull-docker, the build script uses these prebuilt images:

Image	Purpose
sidgrip/native-base:20.04	Native Linux Ubuntu 20.04 build
sidgrip/native-base:22.04	Native Linux Ubuntu 22.04 build
sidgrip/native-base:24.04	Native Linux Ubuntu 24.04 build
sidgrip/appimage-base:22.04	Ubuntu 22+ AppImage build
sidgrip/mxe-base:latest	Windows cross-compile
sidgrip/osxcross-base:latest	macOS cross-compile

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Multi-Coin Builder

For building wallets for all Blake-family coins Blakecoin, Photon, BlakeBitcoin, Electron, Universal Molecule, and Lithium, see the Blakestream Installer.

License

Blakecoin is released under the terms of the MIT license. See COPYING for more information.