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Jumbucks Version 1.9

15 Sep 01:49
@jyap808 jyap808
v1.9
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jyap808 Julian Yap
GPG key ID: C3BD05527F661F0A
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Jumbucks Version 1.9 Latest
Latest

A new wallet version 1.9 has been released for Jumbucks. This release is a clean upgrade for users currently running version 1.8 of the wallet. If you are upgrading from version 1.7 or prior, please follow the steps in the release notes of version 1.8 as the data directory was renamed in that release. New users may install the wallet as is.

Highlights of this release include greatly improved wallet and staking performance.

Changes

  • Removed the unused encrypted messaging feature. This saves memory and network resources.
  • Modify Proof of Stake rewards to change based on nTime as opposed to block count. This makes the switchover at year 2 and year 10 exact in time.
  • Increase the number of nodes required (from 3 to 5) to be connected for staking for better broadcasting of blocks.
  • Rebalance staking network. More inputs, less resources, better stake payouts. This also results in a more stable wallet taking up less resources.
  • Only sign blocks based on current time as slow systems can unintentionally lag behind. This helps to reduce network orphaned blocks.
  • RPC command getwalletinfo - Modify to add more details
  • RPC command dumpbootstrap - New command

Bootstrap.dat file

The Bootstrap.dat allows a new Jumbucks client (not synced) to rapidly import the initial blocks from a local file instead of slowly downloading blocks from random peers. This significantly reduces the time it takes to get a client synced with the current blockchain (minutes instead of hours). Simply having bootstrap.dat in Jumbucks' expected data directory will make your initial block sync much faster.

The current Bootstrap file is at block 1,284,688 (2017-01-28 08:08:56).

Regardless of your operating system use the following steps to make use of the bootstrap.dat file:

  • Download bootstrap.dat.xz.
  • Verify the integrity of bootstrap.dat.xz with the checksums.
  • Decompress to obtain bootstrap.dat.
  • Put it into the Jumbucks datadir. This is the same folder that contains wallet.dat and the blocks folder.
  • Delete bootstrap.dat.old if you want to recover some storage space.

Extract bootstrap.dat

Linux

Code:
xz -d bootstrap.dat.xz

Mac

You can obtain xz from Homebrew or MacPorts.

Windows

7Zip is a free utility that can decompress .xz files. The latest version of WinRAR also supports .xz files.

Copy bootstrap.dat to data directory

Copy bootstrap.dat to your data directory. After Jumbucks has used bootstrap.dat, the file will be renamed to bootstrap.dat.old; at this point you can choose to delete it or keep it.

Linux

Jumbucks' data directory is located in ~/.jumbucks/ by default.

Mac

Jumbucks' data directory should be located in ~/Library/Application Support/Jumbucks/.

Windows

Go to Start>Run (or press WinKey+R) and run: explorer %APPDATA%\Jumbucks
Jumbucks' data directory will open. "AppData" and "Application Data" are hidden by default in Windows.

sha256sum
4a793b34b02afc7d3668137d9623fcdec4e46fe7ba6555462fad38b431d2cf27  Jumbucks-1.9-linux32.tar.gz
c77a1b4dd37da1482fc8d29f796d472aba851e24630fb4196d41dd7db8ba0b9e  Jumbucks-1.9-linux64.tar.gz
01e3fe4206f3d92236816783ba1aece219399132a36e771a91c206f7241b8f97  Jumbucks-1.9-osx-signed.dmg
34ef101f8f8984d6aafb66384ce38c0db025e8b29142d4cede1e1faac5398125  Jumbucks-1.9-RPi.tar.gz
609929046dced2c7b5b1c0c66132f97ceb3a0271259fd200d9d3e99adcf51dfc  Jumbucks-1.9-win32.exe
26f7184ebd3b2b04c4bf9636f96de6752d26ed5973c58f8c335ec794323276fb  Jumbucks-1.9-win64.exe
274240c1f3ce55808d13369a24f50cff31ffbc2ed096d2e16079bb7320a16fc5  bootstrap.dat.xz

$ git show v1.9
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

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Jumbucks Version 1.8 - Maintenance update with directory name changes

24 May 02:55
@jyap808 jyap808
v1.8
This tag was signed with the committer’s verified signature.
jyap808 Julian Yap
GPG key ID: C3BD05527F661F0A
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Jumbucks Version 1.8 - Maintenance update with directory name changes

A new wallet version 1.8 has been released for Jumbucks. This is a relatively minor update but does require some interaction from the user for upgrading as the data directory has been renamed. For existing users, please pay attention to the Upgrade steps below. New users may install the wallet as is.

For Windows users this update also includes standalone executable wallets for 32-bit and 64-bit systems.

Other improvements include new RPC commands and faster start up times.

Upgrade steps

The data directory and configuration file has been renamed. This change was necessary to fully deprecate the old CoinmarketsCoin name to switch over to Jumbucks.

  • Backup your wallet.dat file
  • Shut down the current version 1.7 wallet
  • Rename the data directory the the new name described below. Rename configuration file (if you manually created one) from coinmarketscoin.conf to jumbucks.conf
  • Install the new version
  • Start up the new version 1.8 wallet and verify everything works
    ** Windows users MAY need to follow the step of deleting everything in their data directory except for their wallet.dat file since the wallet is in a new executable format. This would require a full resync of the blockchain and steps to sync from a bootstrap.dat file are included below.

OLD data directory:

Windows < Vista: C:\Documents and Settings\Username\Application Data\CoinmarketsCoin
Windows >= Vista: C:\Users\Username\AppData\Roaming\CoinmarketsCoin
Mac: ~/Library/Application Support/CoinmarketsCoin
Unix: ~/.coinmarketscoin

NEW data directory:

Windows < Vista: C:\Documents and Settings\Username\Application Data\Jumbucks
Windows >= Vista: C:\Users\Username\AppData\Roaming\Jumbucks
Mac: ~/Library/Application Support/Jumbucks
Unix: ~/.jumbucks

Changes

  • Updated some QT wallet images such as the splash screen
  • Added getwalletinfo RPC call
  • RPC command liststealthaddresses - Multiple address fix
  • RPC command liststealthaddresses - Results reformatted to be consistent with rest of RPC calls
  • RPC command sendtoaddress - Call sendtostealthaddress if passed a stealth address
  • RPC command sendtoaddress & sendtostealthaddress - Reordered params moving narration to end
  • OpenSSL DER fix to allow for latest versions of OpenSSL
  • Decrease the default number of blocks to check at startup to 500
  • Modify DNS seeds to use getjumbucks.com domain and deprecate old coinmarketscoin.com domain
  • Remove redundant stake modifier checkpoints checks
  • Reduce nStakeCombineThreshold to 500 for smoother network staking

Bootstrap.dat file

The Bootstrap.dat allows a new Jumbucks client (not synced) to rapidly import the initial blocks from a local file instead of slowly downloading blocks from random peers. This significantly reduces the time it takes to get a client synced with the current blockchain (minutes instead of hours). Simply having bootstrap.dat in Jumbucks' expected data directory will make your initial block sync much faster.

The current Bootstrap file is at block 540,621 (August 14, 2015).

Regardless of your operating system use the following steps to make use of the bootstrap.dat file:

  • Download bootstrap.dat.xz.
  • Verify the integrity of bootstrap.dat.xz with the checksums.
  • Decompress to obtain bootstrap.dat.
  • Put it into the Jumbucks datadir. This is the same folder that contains wallet.dat and the blocks folder.
  • Delete bootstrap.dat.old if you want to recover some storage space.

Extract bootstrap.dat

Linux

Code:
xz -d bootstrap.dat.xz

Mac

You can obtain xz from Homebrew or MacPorts.

Windows

7Zip is a free utility that can decompress .xz files. The latest version of WinRAR also supports .xz files.

Copy bootstrap.dat to data directory

Copy bootstrap.dat to your data directory. After Jumbucks has used bootstrap.dat, the file will be renamed to bootstrap.dat.old; at this point you can choose to delete it or keep it.

Linux

Jumbucks' data directory is located in ~/.jumbucks/ by default.

Mac

Jumbucks' data directory should be located in ~/Library/Application Support/Jumbucks/.

Windows

Go to Start>Run (or press WinKey+R) and run: explorer %APPDATA%\Jumbucks
Jumbucks' data directory will open. "AppData" and "Application Data" are hidden by default in Windows.

sha256sum
1ba13eb7e935a83fa892a9cc8b469866d4874d48ccf332788e527d910d135d27  Jumbucks-1.8-linux32.tar.xz
beaea80cc355f12daa5e76aef3b8ad3bcdae5485d85fb385bc2d3d0d50a664b9  Jumbucks-1.8-linux64.tar.xz
db5fe106376473620a01b5d2cb0fb326386bcd116e14767509d3708d72501798  Jumbucks-1.8-RPi.tar.xz
e1691083e8d712cad3523a02bdb7a324de6442bd1240f14db1569e49cae275f8  Jumbucks-1.8-osx-signed.dmg
ad7f151a540057c5d3b3ecbe45817e6fceedf9e52192e5e57f26cd68c2e22408  Jumbucks-1.8-win32.exe
1627364f1ec76e4c4d0936c5daf9cce9e5ae8e3536cae44507cc22ade76580df  Jumbucks-1.8-win64.exe
8b13261570d680537647774f1db5e93e0a084c4d72f3aa417fd7c351a809e6f5  bootstrap.dat.xz

$ git show v1.8
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Version: GnuPG v1

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-----END PGP SIGNATURE-----
Assets 9
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Jumbucks Version 1.7 - Mandatory update

20 Jan 08:05
@jyap808 jyap808
v1.7
This tag was signed with the committer’s verified signature.
jyap808 Julian Yap
GPG key ID: C3BD05527F661F0A
Learn about vigilant mode.
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Jumbucks Version 1.7 - Mandatory update

Changes

  • Upgrade from version 1.5 to 1.7
  • Update PROTOCOL_VERSION from 60013 to 60014
  • Add MAX_STAKE_BLOCK_REWARD and set Proof of Stake schedule

Hard fork at block 250,000 where MAX_STAKE_BLOCK_REWARD will be enabled

Updated Proof of Stake Schedule

  • Year 1 from Block 250,000. 8% interest and MAX_STAKE_BLOCK_REWARD = 4
  • Year 2. 5% interest and MAX_STAKE_BLOCK_REWARD = 2.5
  • Year 10. 2% interest and MAX_STAKE_BLOCK_REWARD = 1

Further details about MAX_STAKE_BLOCK_REWARD here: https://bitcointalk.org/index.php?topic=865169.msg10194507#msg10194507

Bootstrap.dat file

Bootstrap file is at block 409,398 (May 21, 2015).

Further install details for Bootstrap file here: https://bitcointalk.org/index.php?topic=865169.msg10779084#msg10779084

sha256sum
b17b680391cd96a5fbc7b8e6798169ba8a734dc618fe86b2bd1b9e89d970bc94  Jumbucks-1.7-windows.zip
2cd05489aa4f3de10e82da9c770ba804be1b09c3dcccdb08e86d00c18f5ce9cf  Jumbucks-Qt-1.7-signed-osx.dmg
20e3fc0d87df3adc8447c03bd139a302d9ef228f463a865442620b90bc706f17  Jumbucks-1.7-linux32.tar.xz
d2184fcb5546b862d770b7975c4cf5c9698c4c5e9c5e2a59bb278f6085e7ef06  Jumbucks-1.7-linux64.tar.xz
43c8b00661d5fd3ee446c07079a8d16531669a5b96fbbbdd8aebec70a34a5983  Jumbucks-1.7-RPi.tar.xz
f4ffb46b750aacc7c028145bcb9fdad98542fa7926a0759f1e8e0dfc44722321  bootstrap.dat.xz

$ git show v1.7
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

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=1DL2
-----END PGP SIGNATURE-----
Assets 8
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