Zcoin "French Drop" v0.13.6.1

Instructions

Mandatory upgrade (including pools, Znodes, exchanges, wallets) for all prior versions.

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to this version from the 13.4 branch, it will prompt for a one time reindex (approximately 30-80 minutes). A typical 1 CPU VPS will take about 1 hour 15 minutes. If you are upgrading your Znodes, as long as upgrade is completed within 3 hours, you won't need to issue a znode start command and you won't lose your queue status.

If you are upgrading from 13.5, no reindex is required unless you are stuck on a block on which a reindex is required. Follow this guide on how to reindex.

Changelog

• Mandatory upgrade
• Security fixes
• Hard fork block 89300 (Current block height as of date of release is 87478) so approximately 12 days from date of release.

Binaries

• Version: v0.13.6.1- SHA256 Hashes:
  • Windows: BA0D4A08BD6FA1919A251E7DFA7C5B6A0B6D984C0EB1B7DA90EB3F192A1CB501
  • Windows installer: C3403AEB4C2FF01013C6DFE97721C8DFBEB4EC1C20281808575DF71EA5A69EC9
  • Linux: C1C48720E395E334F7A55AA824A7EF0C920DF902247E5AB61082FF78A07B8C46
  • Mac: C8F9C7A3D70C5B6CF8A7A3EA780AAC2BF70E3F4F3780029F373EDD2D40F975ED

Zcoin "French Drop" v0.13.5.8

Instructions

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to this version from the 13.4 branch, it will prompt for a one time reindex (approximately 30-80 minutes). A typical 1 CPU VPS will take about 1 hour 15 minutes. If you are upgrading your Znodes, as long as upgrade is completed within 3 hours, you won't need to issue a znode start command and you won't lose your queue status.

If you are upgrading from 13.5, no reindex is required unless you are stuck on a block on which a reindex is required. Follow this guide on how to reindex.

Changelog

• Mandatory upgrade
• Zerocoin sync fixes (especially those stuck on block 80432) and additional checks
• Disclosure: Zerocoin flaw resulted in an additional 14,646 coins being created during the period 8-12 March 2018

Binaries

• Version: v0.13.5.8- SHA256 Hashes:
  • Windows: 6D6582A52843718D42793473D2242A3ECE4C56D2BB2F71CFB5433D5DE681C50C
  • Windows installer: 80A506DD14D3173515D6307D45ECF24502381703E21F3DC32012050F55470272
  • Linux: E2E001892C10CECBDC68BBB71471387F4A9347162263F9B3760122DFBABAEA58
  • Mac: AF686FA96C9FB7BA5F4F2BEEC0CEBF2B89B42A9DDD687BFCEDE274D42F8A4B6E

Zcoin "French Drop" v0.13.5.7

Instructions

Mandatory upgrade with hard fork on block 78500 (roughly 14-15 March 2018). You are highly recommended to spend any unspent Zerocoin mints in your wallet so that they can be moved to the new Zerocoin scheme.

If you are already on13.5.5 or 13.5.6, it is still highly recommended to upgrade to 13.5.7 to avoid nodes getting stuck.

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to this version from the 13.4 branch, it will prompt for a one time reindex (approximately 30-80 minutes). A typical 1 CPU VPS will take about 1 hour 15 minutes. If you are upgrading your Znodes, as long as upgrade is completed within 3 hours, you won't need to issue a znode start command and you won't lose your queue status.

If you are upgrading from 13.5, no reindex is required unless you are stuck on a block on which a reindex is required. Follow this guide on how to reindex.

Changelog

• Fixes Zerocoin flaw allowing doublespend
• Mandatory upgrade

Safety Precautions

Please note that once you have upgraded to 13.5 branch, your wallet.dat will have a different structure from 13.4 and below and will not be backward compatible.

You are highly recommended to spend any unspent Zerocoin mints in your wallet so that they can be moved to the new Zerocoin scheme.

Binaries

• Version: v0.13.5.7- SHA256 Hashes:
  • Windows: 4d93e329fe41380f93effd32c279815cb2f4bc7a0b7b97391e32751f77c4c6c1
  • Windows installer: 4a0061de266f67b55e5a003c6c0ad633ad9a8b291556a43de625f30cecdb8293
  • Linux: 26c74586e5fc0e520ed266d20748532917d2617d2e71a8497747398943eda87a
  • Mac: c40c1e6242044a7768f7e498db66f565c56c1e8363e67f53cc9c9ca974613d55

Zcoin "French Drop" v0.13.5.6

Instructions

Mandatory upgrade with hard fork on block 78500 (roughly 14-15 March 2018). You are highly recommended to spend any unspent Zerocoin mints in your wallet so that they can be moved to the new Zerocoin scheme.

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to this version, it will prompt for a one time reindex (approximately 30-80 minutes). A typical 1 CPU VPS will take about 1 hour 15 minutes. If you are upgrading your Znodes, as long as upgrade is completed within 3 hours, you won't need to issue a znode start command and you won't lose your queue status.

Changelog

• Fixes Gitian build issues and uses deterministic builds
• Fixes Linux binaries.
• Fixes high CPU usage in some cases

Safety Precautions

Please note that once you have upgraded to this version, your wallet.dat will have a different structure and will not be backward compatible.

You are highly recommended to spend any unspent Zerocoin mints in your wallet so that they can be moved to the new Zerocoin scheme.

Binaries

• Version: v0.13.5.6- SHA256 Hashes:
  • Windows: 118df8c203342ce62478cdda370e9649b0db891ab0b64fefb017cf6aabcb5ef4
  • Linux: 6785fe0c94943ab527812f0248e6fc7349c80edac03a7c4f42c9fb7263d128a7
  • Mac: 4f45cbf372e14a278f10f6f9d5535786dd80e0335fe92b931efd856a1f38d7f3

Zcoin "French Drop" v0.13.5.5

Instructions

Mandatory upgrade with hard fork on block 78500 (roughly 2 weeks). You are highly recommended to spend any unspent Zerocoin mints in your wallet so that they can be moved to the new Zerocoin scheme.

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to this version, it will prompt for a one time reindex (approximately 30 minutes).

Changelog

• Reindex time is 7-8 times faster
• Incremental accumulator optimizations that makes minting and spending faster in larger accumulator sizes.
• Reduced verification time by inserting additional data in a spend transaction
• Optimized performance by integrating Zerocoin features into block index
• Reduced wallet.dat size through restructuring of data and only storing own mints
• Solved wallet.dat / index out of sync issues
• Improved stability by eliminating non deterministic behaviour
• Security fixes

Safety Precautions

Please note that once you have upgraded to this version, your wallet.dat will have a different structure and will not be backward compatible.

You are highly recommended to spend any unspent Zerocoin mints in your wallet so that they can be moved to the new Zerocoin scheme.

Binaries

• Version: v0.13.5.5- SHA256 Hashes:
  • Windows: 8C37D6DA54F0F5530D308AEEC6BF15749059C1DC352527C9B2FD78E6757F908E
  • Linux: 1860E535F206519F626B2552CECD605D53961F2254F2897577A2ACEB1764237E
  • Mac: D1B708C012BDF8F9D91EF0C853838FC9B7E4A39941DA1198C6DA11049525145A

Zcoin v0.13.4.3

Instructions

Non mandatory update if you're already on v0.13.4.2. Recommended just to reduce excessive logging and cosmetic updates.

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to a version prior to v.013.4.1, it would prompt you to do a one time reindex to enable txindex=1. This will take about an hour.

If upgrading from v0.13.4.1 or v0.13.4.2, no reindex is required. If you have a Znode started, if you start and stop the daemon quickly within an hour, a znode start is not required though always good to double check and verify the start status.

If you are stuck when upgrading to this version, make sure to go into your Zcoin data directory and delete peers.dat and banlist.dat then do a reindex.

Read this guide on how to reindex.

Instructions on how to setup your Znode: https://zcoin.io/zcoin-znode-setup-guide/

Changelog

• Non mandatory but recommended update if from v0.13.4.2.
• Further reduced logging (was still too verbose)
• GUI fix for missing sync status.
• Mac compilation fixes

Safety Precautions

Before doing any Zerocoin mints or spend, make sure to do File>Backup your wallet.dat and save in separate location so you can restore in the case a mint/spend does not confirm.

Binaries

• Version: v0.13.4.3- SHA256 Hashes:
  • Windows: 0a0c1cb0ae0b3328be0ff57f5ca57da1e8c1f031c5bd79011f9f3cbc0e6dc3f7
  • Linux: 65ae2040b603260268877d8e9e4ff6845dbd82ebfff6b507e6f50f03b09d72df
  • Mac: 65d52c848e4153e0c6901555b72eaa5422ee16ad798fcc55857373e786e15e63

Zcoin v0.13.4.2

Instructions

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to a version prior to v.013.4.1, it would prompt you to do a one time reindex to enable txindex=1. This will take about an hour.

If upgrading from v0.13.4.1, no reindex is required. If you have a Znode started, if you start and stop the daemon quickly within an hour, a znode start is not required though always good to double check and verify the start status.

If you are stuck when upgrading to this version, make sure to go into your Zcoin data directory and delete peers.dat and banlist.dat then do a reindex.

Read this guide on how to reindex.

Instructions on how to setup your Znode: https://zcoin.io/zcoin-znode-setup-guide/

Changelog

• Reduced verbosity of logging
• Resolved a bug which allowed duplicate txid for Zerocoin spends (no new coins created)
• Additional Zerocoin serial checks

Safety Precautions

Before doing any Zerocoin mints or spend, make sure to do File>Backup your wallet.dat and save in separate location so you can restore in the case a mint/spend does not confirm.

Credits

Credits to T0rin0 for his bug submission.

Binaries

• Version: v0.13.4.2- SHA256 Hashes:
  • Windows: 7a4abf8bc5dbb33811288d95593cea3e8e2d00462891f177071540d8b508dab8
  • Linux: 40eb35893bb8e5edb260d1889a1ebf07e72174702bf1bcf344fc82030c861fdb
  • Mac: 27037936705f85e5452613a42113380c4dc322d148c17a37e1314b9a853bfc7b

Zcoin v0.13.4.1

Instructions

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to this version, it would prompt you to do a one time reindex to enable txindex=1. This will take about an hour.

If you are stuck when upgrading to this version, make sure to go into your Zcoin data directory and delete peers.dat and banlist.dat then do a reindex.

Read this guide on how to reindex.

Instructions on how to setup your Znode: https://zcoin.io/zcoin-znode-setup-guide/

Changelog

• Mandatory update from all previous versions. Hard fork at block 66550 so update has to be done before then.
• Znode enabled and Founder's reward reduction at block 66700
• Simple Znode GUI
• Optimizations to improve reindex/sync speed on multiple core systems
• Zerocoin mints now are spendable at 6 confirmations, previously 7 confirmations.

Safety Precautions

Before doing any Zerocoin mints or spend, make sure to do File>Backup your wallet.dat and save in separate location so you can restore in the case a mint/spend does not confirm.

Credits

Credits to the many testers who helped us test this release and special mention to schwifty_pickle for helping us with the testnet pool.

Credits to Dash for coming up with the idea and code of masternodes.

Binaries

• Version: v0.13.4.1- SHA256 Hashes:
  • Windows: 3c7c14f351402019a5aed2729b8d0ad173e5a624b75aa64906b5201327a46e40
  • Linux: b13b6e765d6757543cadceb785c38e01245dc7a25dddad3a36f67a3e5c93aeb4
  • Mac: 7038b5acd7837ee891173d08193635a41c3d256f60088e5f1ab56c03ad3ba1df

Testnet Znodes v0.13.4.1b

For TESTNET only.

Do not use if you do not know what you're doing or if you don't know what a testnet is. Run only with -testnet flag.

Read the guide here:
http://zcoin.io/testnet-binaries-znode-gui/

For discussion, testnet coins and bug reports:
https://discord.gg/9jAay8j (Limited invites valid for 100)

Zcoin v0.13.3.3

Instructions

Before anything, backup your wallet.dat ideally in a different drive.

If you are stuck when upgrading to this version, make sure to go into your Zcoin data directory and delete peers.dat and banlist.dat then do a reindex.

Read this guide on how to reindex.

If you are compiling from source, note updated build instructions from readme.md. If you're from 0.8.7.9 earlier, please do a fresh git clone into a new directory.

Changelog

• Fixes stuck block issue
• The update is mandatory for old clients before 0.13.3.1
• Disclosure: Zerocoin flaw resulted in 18,171 coins being created from 10 October to 13 November 2017

Known Bugs

Before doing any Zerocoin mints or spend, make sure to do File>Backup your wallet.dat and save in separate location so you can restore in the case a mint/spend does not confirm.

Binaries

• Version: v0.13.3.3- SHA256 Hashes:
  • Windows: 77dfc8bc1d64f99594c8217373b83cfd524e9f548332d6ae594b859908dcba33
  • Linux: 471028778e3f128c8aaaf394fee29544f2f22dafd098c2a1e1b0e53ff576a982
  • Mac: 96263841dc869b409c97441224c50a2973d78fdbb9443146a36741d80372cd2a