Jan 13, 2020PIVX Core Wallet v4.0.1 is Live!

The release of 4.0 was a historic event in many ways.

The amount of work from design to development to communications to translations and marketing, along with the most rigorous QA testing regiment in PIVX history, delivered a near-flawless release. Of course with any technical release, especially one so massive there are inevitable bugs and other issues that come up. The dev team did an amazing job dealing with the majors leading up to 4.0 release.

4.0.1 covers some of the extra GUI improvements that were mentioned during testing and a few that could wait until after the full mandatory 4.0 release. Some of the other technical fixes are improvements to advancements already in place and provide the PIVX Community a Core Wallet to be proud of.  Beautiful, secure, fast, initiative, advanced – an amazing platform for the next phase for PIVX.


PIVX Core version v4.0.1 is now available from https://github.com/pivx-project/pivx/releases

This is a new revision version release, including various bug fixes and performance improvements, as well as updated translations.

Please report bugs using the issue tracker at Github https://github.com/pivx-project/pivx/issues

Recommended Update

PIVX Core v4.0.1 is NOT a mandatory update, and users can choose to stay with v4.0.0 if they wish. However, v4.0.1 does contain minor bug fixes and performance improvements to address feedback from the v4.0.0 version.

How to Upgrade

If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer (on Windows) or just copy over /Applications/PIVX-Qt (on Mac) or pivxd/pivx-qt (on Linux).


PIVX Core is extensively tested on multiple operating systems using the Linux kernel, macOS 10.10+, and Windows 7 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.

Apple released it’s last Mountain Lion update on August 13, 2015, and officially ended support on December 14, 2015. PIVX Core software starting with v3.2.0 will no longer run on MacOS versions prior to Yosemite (10.10). Please do not report issues about MacOS versions prior to Yosemite to the issue tracker.

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

Notable Changes

Startup Fixes + Performance Improvements

There was a regression in the wallet startup flow causing an excessively growing time based on the amount of stored transactions. In the extreme situation of a wallet with 400k transactions, for example, it was taking over an hour.

4.0.1 fixes it and includes several performance improvements in the wallet’s startup flow.



Wallet with 450,000 transactions.


  • 3.4.0 —> ~14 minutes,
  • 4.0.0 —> +60 minutes,
  • 4.0.1 —> ~8 minutes?

NOTE: Currently the GUI interface only loads the latest 20k transaction records. A “load-on-demand” feature for such big wallets will be provided in a future release.

GUI Enable Smaller Window Resize

There was a request from many users about our GUI window not fitting in their less than 13 inches screens.

4.0.1 implemented a scrolled navigation bar and permit to decrease the screen height up to 620 px (4.0.0 minimum was 740px). Solving, in this way, the small devices fitting issue.

GUI Masternodes Locked Balance Bug Fix.

There was a bug in 4.0.0 not showing the locked balance (Masternodes collateral utxo) in the topbar’s available balance. 4.0.1 fixed it.

GUI Masternodes Start all and Start Missing flows.

The new Masternodes GUI is now implementing the Start all and Start missing flows.

RPC/GUI Rework staking status

Fixed bug with staking icon off while the wallet is actually staking.

Improved staking status detection and expanded getstakingstatus output.

Account System Deprecation

The internal accounting system is planned for removal in a future version. As such, this release contains notations in RPC help texts that state it’s deprecation.

Some instances of the term “account” are rather loose, and possibly technically incorrect (confusing “label” with “account”). These instances will be corrected in a subsequent pull request.

Functional Test Suite Overhaul

Our Regression/Functional testing suite has undergone a substantial overhaul, particularly in regards to the cached chain that can be used to speed up testing. Full details can be found in the description of #1218.

Further Zerocoin Code Cleanup

Initial cleanup work towards a clean zerocoin code sources. 4.1.0 will continue and finish this work.

The house needs to be organized for 5.0.0 new privacy protocol.

RPC Changes


The staking_status is now the first attribute.

validtime has been removed and replaced with tiptime (displaying the time of the current block at the tip of the chain). Fixed enoughcoins attribute and added the following:

  • staking_enabled (whether staking is enabled via conf file / startup flag)
  • hashLastStakeAttempt (hash of the block on top of which the last stake attempt was made)
  • heightLastStakeAttempt (height of the block on top of which the last stake attempt was made)
  • timeLastStakeAttempt (time of the last stake attempt)


This command now takes an additional optional argument (string: label) that allows associating a label with the added owner address in the address book.


This command now takes an optional argument (boolean: fBlacklist) that allows the command to show only owner addresses that have been removed from the whitelist (done by using the delegatorremovecommand).

The default behavior of this command if the new argument isn’t provided remains the same as before.

importprivkey and importaddress

Added support for cold-staking addresses.

v4.0.1 Change log

Detailed release notes follow. For convenience in locating the code changes and accompanying discussion, both the pull request and git merge commit are mentioned.


  • #1203 f72660f89 [Backport][Performance] Cache + guard best block hash. (furszy)
  • #1205 4f19cd0df [Cleanup] Remove unnecessary QtCreator files (Fuzzbawls)
  • #1233 2e4d9142f [Trivial] Remove spammy log in in StakeV1 (random-zebra)
  • #1234 2d6d48c74 [Cleanup] Remove precomputing (Fuzzbawls)
  • #1237 51e7ea2a0 [Cleanup] Remove precomputing II (random-zebra)
  • #1243 fcb21d851 [Core][Trivial] Don’t log missing MNs during CleanAndRemove (random-zebra)
  • #1245 9cf807d80 [Core] Rework staking status (random-zebra)
  • #1252 e7e1dd4d1 [Trivial] Log log2_work value with 16 decimals (random-zebra)


  • #1184 23313ac4f [GUI][Trivial] Minor edits to written content (random-zebra)
  • #1211 a2912a9d6 [GUI] MN creation wizard (furszy)
  • #1217 d49e4a6d6 [Startup][GUI][Performance] Optimizations for huge wallets. (furszy)
  • #1221 e62da0bda [GUI] Masternodes start all and start missing flows implemented. (furszy)
  • #1223 f2d429114 [GUI][Bug] Show locked balance in the available total amount. (furszy)
  • #1224 a3f09c422 [Trivial][GUI] Minor changes within 4.0 wallet FAQ (NoobieDev12)
  • #1228 ec3c7d67b [GUI] Adding capability to decrease the screen size for small screens. (furszy)
  • #1250 276e1e08b [GUI] Every MN action checking tier two synced. (furszy)
  • #1253 f65d0d828 [Qt] Initialize isLoading to false for CS view (Fuzzbawls)

Wallet Code

  • #1222 69f897be3 [Wallet] Remove un-necessary CheckTransaction call when loading wallet. (Fuzzbawls)
  • #1229 87c369bcc [Wallet] Graceful shutdown in the unlock corrupted wallet. (furszy)
  • #1231 ccb2402d4 [Wallet] IsEquivalentTo commented (furszy)
  • #1240 310deb9b0 [Model][Wallet][Performance] Several changes in txRecord updateStatus. (furszy)

Build Systems

  • #1199 d40686f43 Clean up 4.0 compiler warnings (Cave Spectre)


  • #1207 1968f6107 [Doc] Update build-unix.md file (Fuzzbawls)

RPC Interface

  • #1206 80414f979 [BUG][RPC] fix signature check (against old format) in mnbudgetrawvote (random-zebra)
  • #1238 fd43ba5f2 [RPC] Add optional arguments to delegatoradd and listdelegators (random-zebra)
  • #1242 2bfde4e7b [RPC] Add coldstaking address support in importprivkey and importaddress (random-zebra)
  • #1251 441d790d8 [RPC] Notate all account stuff as deprecated (Fuzzbawls)

Testing Systems

  • #1218 a70e82a86 [Tests] Functional Tests Suite Overhaul (random-zebra)


Thanks to everyone who directly contributed to this release:

  • Cave Spectre
  • Fuzzbawls
  • NoobieDev12
  • furszy
  • random-zebra

As well as everyone that helped translating on Transifex, the QA team during Testing and the Node hosts supporting our Testnet.