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ColossusXT v1.2.2

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COLX Core version 1.2.2 is now available from:

This new minor version release includes various bug fixes and improvements.

Please report bugs using the issue tracker at github:

Mandatory Update

COLX Core v1.2.2 is a mandatory update that introduces changes in the superblock structure and requires a whole network update.

How to Upgrade

Shut down wallet. Wait until it has completely shut down, then run the installer on Windows or just copy over /Applications/COLX-Qt (on Mac) or colxd/colx-qt (on Linux).


COLX Core is extensively tested on multiple operating systems using
the Linux kernel, macOS 10.8+, and Windows Vista and later.

Microsoft ended support for Windows XP on April 8th, 2014,
No attempt is made to prevent installing or running the software on Windows XP, you
can still do so at your own risk but be aware that there are known instabilities and issues.
Please do not report issues about Windows XP to the issue tracker.

COLX Core should also work on most other Unix-like systems but is not
frequently tested on them.

Notable changes

Superblock structure update - budget system optimization

Starting at the block number 1252800, all budget payments will be included in the single superblock instead of chain of superblocks one per budget.

Superblock structure update - dev fund

Starting at the block number 1252800, dev fund payments 150 COLX won't be included in the coinstake transaction of each block. Instead of these small payments single dev fund payment of 6'480'000 COLX will be included in the superblock since block number 1296000.

Superblock structure update - coin generation

As per community consensus on proposal “NewBudgetSystem” (see &, starting at the block number 1296000, 108'000'000 COLX will be created in the next 24 superblocks - 4'500'000 COLX per each superblock. 24 months allocation of missing coins from 2018 due to a budget bug within the self governance mechanism to be used to strengthen and stabilize the ARMIS (i2p) layer.

Change Log

Theme switcher / Light theme

Wallet theme can be changed in the settings "Display" tab. Light theme added.

Masternode setup GUI

GUI added to the wallet that helps setup masternode.

Block Cryptopia

As per community consensus on proposal “CryptopiaIssue” (see &, wallet will block Cryptopia address from staking and spending DSesymccyAQr6LjGLCHsvHzE41uKMk86XS.

4k monitor issue

Resolved issue with high resolution stretching on 4k screen.

Initial sync improvement

Massive improvements to initial synchronization speed.

Free relay limited

Free relay of transactions limited by default, you can enable it using option -limitfreerelay.