UniversalMolecule 0.15.21

SegWit signaling schedule: UniversalMolecule mainnet versionbits signaling starts on May 11, 2026 00:00:00 UTC (1778457600) and times out on May 11, 2027 00:00:00 UTC (1809993600). Activation still depends on BIP9 lock-in.

About UniversalMolecule

UniversalMolecule is a Blake-256 cryptocurrency in the BlakeStream family. This repository carries the UniversalMolecule Core 0.15.21 update and ships build/release packaging for native Ubuntu 20.04, 22.04, 24.04, 25.10, Windows, native macOS, and Ubuntu 22.04+ AppImage.

• 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

Network Info
Algorithm	Blake-256 (8 rounds)
Block time	120 seconds (2 minutes)
Block reward	1 UMO genesis, 0.001 UMO launch, then 0.1 or 2 UMO based on difficulty trend
Difficulty retarget	Every 5 blocks (10 minutes)
Default port	24785
RPC port	5921
Max supply	105,120,001.44 UMO

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Quick Start

git clone https://github.com/SidGrip/universalmol.git
cd universalmol
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 UniversalMolecule-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:sdk-26.2
• 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/
│   ├── UniversalMolecule-0.15.21-x86_64.AppImage
│   ├── README.md
│   └── build-info.txt
├── Macosx/
│   ├── UniversalMolecule-Qt.app
│   ├── universalmolecule-cli-0.15.21
│   ├── universalmolecule-qt-0.15.21
│   ├── universalmolecule-tx-0.15.21
│   ├── universalmoleculed-0.15.21
│   └── build-info.txt
├── Ubuntu-20/
│   ├── README.md
│   ├── universalmolecule-256.png
│   ├── universalmolecule-cli
│   ├── universalmolecule.conf
│   ├── universalmolecule.desktop
│   ├── universalmolecule-qt
│   ├── universalmolecule-qt-bin
│   ├── universalmolecule-tx
│   ├── universalmoleculed
│   └── install-deps.sh
├── Ubuntu-22/
├── Ubuntu-24/
├── Ubuntu-25/
└── Windows/
    ├── universalmolecule-cli-0.15.21.exe
    ├── universalmolecule-qt-0.15.21.exe
    ├── universalmolecule-tx-0.15.21.exe
    ├── universalmoleculed-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 universalmolecule.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/ and contains the four .exe binaries plus build-info.txt.

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

For AppImage builds, outputs/AppImage/ keeps UniversalMolecule-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/native-base:25.10	Native Linux Ubuntu 25.10 build
sidgrip/appimage-base:22.04	Ubuntu 22+ AppImage build
sidgrip/mxe-base:latest	Windows cross-compile
sidgrip/osxcross-base:sdk-26.2	macOS cross-compile

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Multi-Coin Builder

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

License

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