v3.0.4

PIVX Core version 3.0.4 is now available from:

https://github.com/pivx-project/pivx/releases

This is a new minor-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

Mandatory Update

PIVX Core v3.0.4 is a mandatory update for all users. This release contains various updates/fixes pertaining to the zPIV protocol, supply tracking, block transmission and relaying, as well as usability and quality-of-life updates to the GUI.

Users will have a grace period to update their clients before versions prior to this release are no longer allowed to connect to this (and future) version(s).

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).

Compatibility

PIVX 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.

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

❗❗❗ MacOS 10.13 High Sierra ❗❗❗

Currently there are issues with the 3.0.x gitian releases on MacOS version 10.13 (High Sierra), no reports of issues on older versions of MacOS. As such, a High Sierra Only version is included below.

Notable Changes

Refactoring of zPiv Spend Validation Code

zPiv spend validation was too rigid and did not give enough slack for reorganizations. Many staking wallets were unable to reorganize back to the correct blockchain when they had an orphan stake which contained a zPiv spend. zPiv double spending validation has been refactored to properly account for reorganization.

Money Supply Calculation Fix

Coin supply incorrectly was counting spent zPiv as newly minted coins that are added to the coin supply, thus resulting in innacurate coin supply data.

The coin supply is now correctly calculated. If a new wallet client is synced from scratch or if -reindex=1 is used then the correct money supply will be calculated. If neither of these two options are used, the wallet client will automatically reindex the money supply calculations upon the first time opening the software after updating to v3.0.4. The reindex takes approximately 10-60 minutes depending on the hardware used. If the reindex is exited mid-process, it will continue where it left off upon restart.

Better Filtering of Transactions in Stake Miner

The stake miner code now filters out zPiv double spends that were on rare occasions being slipped into blocks (and being rejected by peers when broadcast to the network).

More Responsive Shutdown Requests

When computationally expensive accumulator calculations are being performed and the user requests to close the application, the wallet will exit much sooner than before.

More Extensive Display of zPiv Confirmation/Maturity Status

Within the Privacy Dialog of the QT wallet, the Zerocoin Stats section now displays both the confirmation and maturity status of minted zPiv's. Previously this was only able to be viewed within the zPiv Control dialog. The main Overview tab of the QT wallet now splits zPiv balance into subcategories: Unconfirmed, Immature, and Mature.

3.0.4 Change log

Detailed release notes follow. This overview includes changes that affect
behavior, not code moves, refactors and string updates. For convenience in locating
the code changes and accompanying discussion, both the pull request and
git merge commit are mentioned.

P2P Protocol and Network Code

• #294 27c0943 Add additional checks for txid for zpiv spend. (presstab)
• #301 b8392cd Refactor zPiv tx counting code. Add a final check in ConnectBlock() (presstab)
• #306 77dd55c [Core] Don't send not-validated blocks (Mrs-X)
• #312 5d79bea [Main] Update last checkpoint data (Fuzzbawls)
• #325 7d98ebe Reindex zPiv blocks and correct stats. (presstab)
• #327 aa1235a [Main] Don't limit zPIV spends from getting into the mempool (Fuzzbawls)
• #329 19b38b2 Update checkpoints. (presstab)
• #331 b1fb710 [Consensus] Bump protocol. Activate via Spork 15. (rejectedpromise)

Wallet

• #308 bd8a982 [Minting] Clear mempool after invalid block from miner (presstab)
• #316 ed192cf [Minting] Better filtering of zPiv serials in miner. (presstab)

GUI

• #309 f560ffc [UI] Better error message when too much inputs are used for spending zPIV (Mrs-X)
• #317 b27cb72 [UI] Wallet repair option to resync from scratch (Mrs-X)
• #323 2b648be [UI] Balance fix + bubble-help + usability improvements (Mrs-X)
• #324 8cdbb5d disable negative confirmation numbers. (Mrs-X)

Build System

• #322 a91feb3 [Build] Add compile/link summary to configure (Fuzzbawls)

Miscellaneous

• #298 3580394 Reorg help to stop travis errors (Jon Spock)
• #302 efb648b [Cleanup] Remove unused variables (rejectedpromise)
• #307 dbd801d Remove hard-coded GIT_ARCHIVE define (Jon Spock)
• #314 f1c830a Fix issue causing crash when pivxd --help was invoked (Jon Spock)
• #326 8b6a13e Combine 2 LogPrintf statement to reduce debug.log clutter (Jon Spock)
• #328 a6c18c8 [Main] PIVX not responding on user quitting app (Aaron Langford)

Credits

Thanks to everyone who directly contributed to this release:

• Fuzzbawls
• Jon Spock
• Mrs-X
• furszy
• presstab
• rejectedpromise
• aaronlangford31

As well as everyone that helped translating on Transifex.