Electrum-SUM is a simple, but powerful Sumcoin wallet. A unique secret phrase (or “seed”) leaves intruders stranded and your peace of mind intact. Keep it on paper, or in your head... and never worry about losing your sumcoins to theft or hardware failure.


Electrum-SUM is a community-maintained port of Electrum, The Sumcoin wallet, to Sumcoin. It is not an official product of Electrum Technologies GmbH, which does not support it.

IMPORTANT NOTICE (September 5, 2020)

Electrum-SUM is still in the development phrase. ElectrumX-sum (the server) is fully functional. Mac, Windows and Linux are now released for Beta. Use at your own discretion


  Always verify the digital signatures of the files you download! (instructions

Latest Version: Beta (released 2020-09-08)

  Make sure you back up your wallet/seed if upgrading from an earlier version.  


Standalone Executable (checksums; signature by Pooler)
Windows Installer (checksums; signature by Pooler)
Portable version (checksums; signature by Pooler)
Note: Some old versions of Windows might need to install the KB2999226 Windows update.


sudo apt-get install python3-setuptools python3-pyqt5 python3-pip python3-dev libssl-dev
sudo pip3 install scrypt
sudo pip3 install https://electrum-sum.org/download/Electrum-SUM-beta-


  • Use instantly: Electrum-SUM doesn't need to download the whole blockchain, which is instead maintained on a tamper-proof, remote server.
  • Safe: Your unique secret phrase and private keys are never sent to the Electrum-SUM servers. All information received from the server is verified using Simplified Payment Verification (SPV).
  • Forgiving: Never be concerned about losing your wallet! With your unique seed, you can always recover and restore your wallet...even if you sustain the worst of hardware or software failures.
  • Cold storage: Use Electrum-SUM to generate and manage your secure offline wallets, enabling you to take some or all of your funds completely offline.
  • Accessible: Export your private keys to other Sumcoin clients, at your convenience.


Development Project page on GitHub
Want to run your own server? ElectrumX
IRC Channel #electrum-sum (web chat) on Freenode
Forums Discord, r/sumcoinindex

Frequently Asked Questions

Is there a version of Electrum-SUM for Android?
Android is currently supported by Slice Wallet. Check out Slice Wallet
Is there a version of Electrum-SUM for iOS?
iOS is currently supported by Slice Wallet. Check out Slice Wallet
Does Electrum-SUM support Segwit?
What is a “seed”?
Electrum-SUM uses a 128-bit random seed to generate your private keys. The seed can be represented as a 12-word mnemonic code. You do not need to perform regular backups, because your wallet can be recovered from the seed that you can memorize or write on paper.

Seed Example

What should I do with my old Sumcoin addresses and wallet when switching to Electrum-SUM?
The best way to switch to Electrum is to send all the Sumcoins you have on your old wallet to one of the addresses on your Electrum wallet. This way you'll have all your Sumcoins secured with your seed. Older versions of Electrum could import private keys from another client, but then you had to backup those keys separately, as they could not be restored by the Electrum seed.
What does it mean to “freeze” an address?
When you freeze an address, the funds in that address will not be used for sending Sumcoins. You cannot send Sumcoins if you don't have enough funds in non-frozen addresses.
Where is my wallet file located?
A default wallet file called default_wallet is created under the /wallets folder when you first run the application. On Windows, this folder is located in \Users\YourUserName\AppData\Roaming\Local\Electrum-SUM. On all other operating systems, it is located in ~/.electrum-sum.
What is the gap limit?
The gap limit is the maximum number of consecutive unused addresses in your deterministic sequence of addresses. Electrum-SUM uses a gap limit to stop looking for addresses. This is set to 5 by default, so the client generates new addresses until 5 unused addresses are found.
This server is provided courtesy of Sumcoinlabs
Website design by Frank Tudor