Aug 14, 2020PIVX Development Update – Week 2, August 2020

Editor Note:

So much development is happening in such a short period of time that it’s very difficult to keep up!

We are just very lucky to have such dedicated and skilled developers in PIVX making this project a stand out in this super crowded cryptocurrency space.

New Desktop wallet 4.2 is out!

Starting off Q3 with a bang, PIVX v4.2.0 core desktop wallet was released just last month! It includes a lot of core improvements under the hood.

For those running 4.1.1 currently, it’s not mandatory to update to 4.2.0. However, upgrading to the latest version is always recommended.

More Info:
PIVX Releases Next Major Wallet 4.2 Ahead of Schedule

Sapling Integration Code has been revealed!

As if 4.2 release wasn’t big enough news already, core developer furszy has shocked the community this week by publishing the main Sapling protocol integration code for PIVX on github for public review!

After over 10 months of research, coding, and testing, the Zcash protocol specification was customized and structurally improved to run on top of the PIVX unique network. The end result? This PIVX-unique adaptation code is working already on regtest (private network) with zk-SNARKs shielded transactions to boot!

Editor note: Afaik, PIVX is the first non-Zcash fork integrating Sapling like this, and the first pure Proof of Stake coin to do it also. So this is an incredible feat to be able to publish this work this early. It also means that PIVX Privacy is really happening. So get ready to transfer and receive PIVX with full transaction privacy soon!

More Info:
PIVX Privacy Update – Sapling Integration is Out!

Related PRs:
https://github.com/PIVX-Project/PIVX/pull/1553
https://github.com/PIVX-Project/PIVX/pull/1666
https://github.com/PIVX-Project/PIVX/pull/1798

4.2.1 is also in the works!

Our development team just doesn’t stop! It looks like we will have another solid wallet release sometime this quarter that will include a whole host of additional Bitcoin backports, numerous bug fixes, and minor enhancements. It will also address the recently reported random lock up issue that some may have experienced.

Basically, we will end up with a much more stable release soon that will become the foundation for 5.0 that’s coming later in the year.

So keep a look out for the release news of the 4.2.1 wallet as it’s not far away!

Other Recent Development Highlights / Reminders

PIVX Core Wallet – Mandatory Update

If you are currently running 4.1.0 or older, you must upgrade to 4.1.1 or 4.2.0 NOW and then make sure that you are on the right chain by comparing your latest block / hash to the block explorers as 4.1.0 or older wallet is no longer valid on the current network. If you need further assistance on this matter, please join our discord!

Do you have zPIV? Spend them ASAP!

PublicCoinSpend v4 (PR #936) function has been incorporated into the 4.x wallet since January 2020. So it is now possible for anyone with any version of zPIV to spend them back as PIV. However, as per the recent Road to 5.0 announcement, the support for zPIV will cease once 5.0 is released. 

So we urge everyone with zPIV to convert them back to PIV ASAP and request assistance in PIVX Discord #support channel if you run into any issues or simply have questions.

Complete GitHub Activity

(August 9, 2020 – August 9, 2020)

2 Releases published

• v4.2.0rc1
  published 
• v4.2.0
  published 

49 Pull requests merged

• [Wallet] AvailableCoins remove duplicated watchonly config argument.
  #1759 merged 
• [wallet] List COutput solvability + wallet_ismine refactoring.
  #1755 merged 
• [Core] ModifyNewCoins saves database lookups
  #1777 merged 
• [Core] Alter assumptions in CCoinsViewCache::BatchWrite
  #1774 merged 
• [Build] Fix glibc compat
  #1790 merged 
• [Trivial] [RPC] Fix listcoldutxos help text
  #1753 merged 
• [Build] Bump minimum libc to 2.17 for release binaries
  #1770 merged 
• [Trivial] openssl.org dependency download link changed
  #1750 merged 
• [Validation] Reduce cs_main locks during ConnectTip/SyncWithWallets
  #1721 merged 
• Base work for the Sapling signatureHash
  #1666 merged 
• Sapling Foundations (Build System + ZIP32)
  #1553 merged 
• [Core] Use SipHash for node eviction
  #1771 merged 
• [Wallet] Do not try to resend transactions if the node is importing or in IBD
  #1783 merged 
• [Core] Use SipHash-2-4 for various non-cryptographic hashes
  #1768 merged 
• [GUI] Start masternodes polling timer only when is needed.
  #1782 merged 
• [Core] Remove BIP30 check
  #1775 merged 
• [Net] cs_vSend-cs_main deadlock detection fixed.
  #1780 merged 
• [Wallet] Acquire cs_main lock before cs_wallet during wallet initialization
  #1781 merged 
• Move coinbase & coinstake to P2PKH
  #1700 merged 
• [Backport] Test LowS in standardness, removes nuisance malleability vector
  #1694 merged 
• [Build] Update leveldb to 1.22+
  #1738 merged 
• [Doc] save historical rel notes for 4.2.0 and reset template
  #1772 merged 
• [Net] Remove bogus assert on number of oubound connections.
  #1769 merged
• [Wallet] Ignore MarkConflict if block hash is not known
  #1767 merged
• [wallet] Securely erase potentially sensitive keys/values
  #1764 merged
• [Build] Bump master to 4.2.99 (pre-5.0)
  #1765 merged 
• [Wallet] Simple unused methods cleanup.
  #1752 merged 
• [Model] Wallet interface refactor + code cleanup.
  #1754 merged 
• [Validation] DisconnectBlock updates.
  #1735 merged 
• [Backport] 4.2.0 backports
  #1758 merged 
• [Doc] 4.2.0 Release Notes
  #1762 merged 
• [GUI] Update translations from transifex
  #1763 merged 
• [GUI] Solving old, not loaded at startup, transactions notification issue.
  #1749 merged 
• NU custom activation height startup arg.
  #1747 merged 
• [Miner] Unused reserveKey cleanup
  #1751 merged 
• [GUI] Load persisted transaction filter during start
  #1287 merged 
• [Core] Only include undo.h from main.cpp
  #1746 merged 
• [Build] Require minimum boost version 1.57.0
  #1703 merged 
• [GUI] Recognize key event for clearing console
  #1744 merged 
• [Build] Bump version to 4.2.0rc1
  #1743 merged 
• [GUI] Settings console message moved to read only.
  #1741 merged 
• [GUI] Fix settings language combobox initialization.
  #1742 merged 
• [Cleanup] Transaction primitive unused methods cleanup.
  #1736 merged 
• Move zerocoin validation to its own legacy file.
  #1733 merged 
• [Wallet] AddToWallet split in AddToWallet and LoadToWallet
  #1717 merged 
• [GUI] Periodic make translate
  #1740 merged 
• [GUI] Better start single MN error description.
  #1732 merged 
• [RPC][Wallet] Deprecate internal account system
  #1731 merged 
• [GUI] Replace more deprecated Qt methods
  #1737 merged 

10 Pull requests opened

• [Wallet] add cacheable amounts for caching credit/debit values
  #1757 opened 
• [wallet] AvailableCoins code readability improved
  #1760 opened 
• [Core] per-txout model preparation
  #1773 opened 
• [Model] TransactionRecord decomposeTransaction refactoring
  #1776 opened 
• lock cs_main for Misbehaving
  #1785 opened 
• Change mapRelay to store CTransactions
  #1786 opened 
• Improve usage of fee estimation code
  #1787 opened 
• [Core] Remove priority estimation
  #1788 opened 
• [Masternodes] Missing cs main locks in CalculateScore and GetMasternodeInputAge
  #1791 opened 
• [Build] allow for empty RUST_TARGET in offline builds
  #1792 opened 

19 Issues closed

• Tracking purpose of backport btc#13023
  #1230 closed 
• [Backport] Update/Upgrade sync from upstream.
  #1201 closed 
• zero fee transactions from without GUI
  #796 closed 
• lock/mutex issues (client crashing), do you have it?
  #564 closed 
• [Performances] Review LOCK usage
  #713 closed 
• [Bug][GUI][Trivial] Set language isn’t showing
  #1615 closed 
• [GUI][Trivial] Unselected Custom shows lower fee than possibly accepted
  #1621 closed 
• [Bug] Wallet returns Restart required when it’s not needed
  #1622 closed 
• [RFC] Bump minimum required Boost version to 1.57.0
  #1682 closed 
• pivxd (ARM) crashes after about 15 minutes on Pi4
  #1778 closed 
• [BUG] [CLI] notify options don’t work
  #1649 closed 
• PIVX 4.1.0 failed to open on Mac 10.11.6.
  #1655 closed 
• [GUI][Bug] Console output results are still movable
  #1748 closed 
• [GUI][Bug] Console output results are movable and sometimes is possible to type between the output results
  #1712 closed 
• [Bug] Wallet changing language after restarting depending on OS language settings
  #1627 closed 
• Pivx’ Linux Snap unable to switch Datadir – add removable-media interface
  #1220 closed 
• Cannot install 4.1.0 on MacOS 10.13.6
  #1613 closed 
• missing Zpiv in my 4.1 wallet
  #1632 closed 
• Cross compiling for macOS, complains the files are damaged.
  #1680 closed 

 2 Issues opened

• QT won’t work properly when compiled
  #1779 opened 
• [GUI][Trivial] Masternodes section of the FAQ omits hardware wallet support.
  #1766 opened 

Major Development Target Dates

(subject to change and is never a complete list)

Q3 2020 – PIVX Core Wallet 4.2.1 release
Q4 2020 – PIVX Core Wallet 5.0 testnet
Q4 2020 – PIVX Core Wallet 5.0 GA release

Please also check our roadmap page for more info on what else is planned.

Also, there are many other 2020 developments in the works at a project level such as a brand new website, logo refresh, and more. So 2020 is going to be a great year!

Want to contribute?

Anyone and everyone is welcome to contribute to our code on GitHub, and they will all go through the same process of multi-dev peer review and will be merged if it gets enough ACKs!

Language Translation Needed

We also welcome all translators who can assist in making our wallets multi-lingual! From now on, our core wallets will only include support for languages that are at least 80% translated on Transifex. So any extra assistance in this area would be greatly appreciated! https://www.transifex.com/pivx-project/