Wrapper for Specter

Specter is a GUI for Bitcoin Core optimized to work with hardware wallets. This repository creates the s9pk package that is installed to run specter on StartOS.

📢 Availability

This app is now available at the official Start9 Community Marketplace:
🔗 https://community-registry.start9.com/

There you can install the prebuilt release package from the marketplace without building it.

If you want to build Specter Wrapper yourself, follow these steps:

Start9 Service Pre-Requisites

• Bitcoin Core

Dependencies

To build this project, a properly configured environment is necessary. Start9 provides a comprehensive guide that ensures compatibility with the latest SDK:

🔗 Recommended Guide: Start9 Packaging Docs

✅ Build Environment (Ubuntu-based Quickstart)

1. Install Docker

curl -fsSL https://get.docker.com -o- | bash
sudo usermod -aG docker "$USER"
exec sudo su -l $USER

2. Set buildx as the default builder

docker buildx install
docker buildx create --use

3. Enable cross-arch emulation

docker run --privileged --rm linuxkit/binfmt:v0.8

4. Install yq

sudo snap install yq

5. Install essential build packages

sudo apt-get install -y build-essential openssl libssl-dev libc6-dev clang libclang-dev ca-certificates

6. Install Rust & toml-cli

curl https://sh.rustup.rs -sSf | sh
source $HOME/.cargo/env
cargo install toml-cli

7. Install start-sdk

git clone https://github.com/Start9Labs/start-os.git
cd start-os
make sdk

Then initialize:

start-sdk init

Cloning the Project

Clone this repository and its submodules:

git clone https://github.com/Alex71btc/specter-startos.git
cd specter-startos
git submodule update --init --recursive

Building

Simply run:

make

This will create specter.s9pk, the package for StartOS.

🛠️ Installing on StartOS

🔄 Method 1: Via the StartOS Web UI (Sideload)

1. In the StartOS web interface, go to:

   Settings → Sideload Service
   

2. Drag and drop the specter.s9pk file into the window, or select it manually.

3. Follow the on-screen instructions to complete the installation.

💻 Method 2: Using the Command Line (with start-cli)

📌 Make sure you have start-cli configured on your development machine.

1. Authenticate to your StartOS instance:

start-cli auth login

2. Sideload the .s9pk package:

start-cli service sideload ./specter.s9pk

3. Start the service:

start-cli service start specter

📦 Note: You can also sideload the specter.s9pk file through the StartOS web interface under Settings → Sideload Service.

Verify Install

Go to your StartOS Services dashboard, select Specter, configure and start the service. Then, verify its interfaces are accessible.

---

🎉 Done!

Support

🔹 Wrapper Issues (installation problems, StartOS integration, etc.):
→ Open a GitHub Issue in this repository.

🔹 Specter Desktop Issues (wallet features, hardware wallet bugs, etc.):
→ Report directly at Specter Desktop GitHub.