Linux Repositories

Using the Qtum Repository on Linux

We've updated our official Qtum repository on https://repo.qtum.info. This repository supports the following distributions:

Debian

• 9.x (Stretch)

• 10.x (Buster)

• 11.x (Bullseye)

• 12.x (Bookworm)

• 13.x (Trixie)

• Unstable (Sid)

Ubuntu

• 18.04 (Bionic Beaver)

• 20.04 (Focal Fossa)

• 22.04 (Jammy Jellyfish)

• 24.04 (Noble Numbat)

• 24.10 (Oracular Oriole)

• 25.04 (Plucky Puffin)

• 25.10 (Questing Quokka)

• 26.04 (Resolute Raccoon)

More distributions will be added in the future, and this document will be updated to reflect those changes.

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Install Qtum

The Qtum repository is hosted at https://repo.qtum.info and is signed with GPG key 016C5D539BA4FC95.

1. Install prerequisites

sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl gnupg

2. Import the GPG signing key

Create the keyring directory and download the public key:

sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://repo.qtum.info/qtum-archive-keyring.gpg | sudo gpg --dearmor -o /etc/apt/keyrings/qtum.gpg
sudo chmod a+r /etc/apt/keyrings/qtum.gpg

Key fingerprint (verify before trusting):

B3B1 E137 26A7 F3E5  F46E  B8FA  016C 5D53 9BA4 FC95

Verify the key you imported matches:

gpg --show-keys /etc/apt/keyrings/qtum.gpg

3. Add the repository

Add the Qtum repository to your APT sources. This uses your system's codename automatically ($(. /etc/os-release && echo $VERSION_CODENAME)), so it works on every supported Debian and Ubuntu release without modification:

echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/qtum.gpg] \
https://repo.qtum.info $(. /etc/os-release && echo $VERSION_CODENAME) main" | \
sudo tee /etc/apt/sources.list.d/qtum.list > /dev/null

4. Install Qtum

sudo apt-get update
sudo apt-get install qtum

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Verify Your Installation

Confirm Qtum is installed and check the version:

qtum-cli --version

The Qtum daemon (qtumd) and CLI (qtum-cli) are installed to /usr/bin/ and available system-wide.

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Headless / Server Setup

On servers without a desktop environment, use the daemon directly:

# Create a data directory
mkdir -p ~/.qtum
​
# Start the daemon (mainnet)
qtum-daemon -daemon
​
# Check status
qtum-cli getblockchaininfo

For testnet, add -testnet:

qtum-daemon -testnet -daemon
qtum-cli -testnet getblockchaininfo

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Uninstall Qtum

To remove Qtum and the repository:

# Remove the package
sudo apt-get remove --purge qtum

# Remove the repository source
sudo rm /etc/apt/sources.list.d/qtum.list

# Remove the GPG key
sudo rm /etc/apt/keyrings/qtum.gpg

# Refresh package index
sudo apt-get update

To also remove blockchain data (if you ran the daemon):

rm -rf ~/.qtum

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Troubleshooting

GPG Key Errors

If you see NO_PUBKEY or signature verification errors:

# Re-import the key
curl -fsSL https://repo.qtum.info/qtum-archive-keyring.gpg | sudo gpg --dearmor -o /etc/apt/keyrings/qtum.gpg
sudo chmod a+r /etc/apt/keyrings/qtum.gpg
sudo apt-get update

Verify the key fingerprint matches:

gpg --show-keys /etc/apt/keyrings/qtum.gpg
# Expected: B3B1E13726A7F3E5F46EB8FA016C5D539BA4FC95

Repository Not Found / No Release File

This means your distribution codename is not in the repository. Check your codename:

. /etc/os-release && echo $VERSION_CODENAME

Compare it to the supported list above. If it's not listed, your release may be too new (not yet published) or too old (EOL). In that case, build from source or use the closest supported release as a fallback.

Package Not Found After apt-get update

Ensure the repository was added correctly:

cat /etc/apt/sources.list.d/qtum.list

The line should contain your architecture, the keyring path, and your codename. If the keyring path is wrong or the codename doesn't match, apt will silently skip the repo.

Permission Denied

Ensure you have sudo privileges:

sudo -v

If this fails, contact your system administrator or add your user to the sudo group.

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Additional Resources

• Official Website: https://qtum.org

• GitHub Repository: https://github.com/qtumproject/qtum

• Documentation: https://docs.qtum.info

• Block Explorer: https://qtumexplorer.io

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Last Updated: July 2026 Repository Key: 016C5D539BA4FC95 (RSA 4096) Repo URL: https://repo.qtum.info