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Topic: [JBS] Jumbucks - No IPO/ICO - Proof of Stake - Slack - DCR Stake Pool - 2+ Years - page 12. (Read 48226 times)

full member
Activity: 168
Merit: 100
okey i will support this coin Smiley is easy to up 20k sat Smiley hope more people join to team Wink
hero member
Activity: 896
Merit: 1000
Avatars are overrated.
stuff
^^^^
I don't know him. Cool raspberry pi stuff! I bought some.
member
Activity: 96
Merit: 10
Silence of the jumbucks in here Smiley....any updates dev?
Thanks.
newbie
Activity: 39
Merit: 0
sr. member
Activity: 328
Merit: 525
The source code did not mention a license..............  it it released under the mit license as stated inside the code itself ?  or ?

Yep.

https://github.com/jyap808/jumbucks/tree/master/doc

"Distributed under the MIT/X11 software license"
legendary
Activity: 1148
Merit: 1018
It's about time -- All merrit accepted !!!
The source code did not mention a license..............  it it released under the mit license as stated inside the code itself ?  or ?
legendary
Activity: 952
Merit: 1000

Jumbucks Announces Official Raspberry Pi and Linux builds; bootstrap.dat file

The development team at Jumbucks are currently working on a larger project for the coin (and one that will benefit other Proof of Stake coins) so we wanted to provide something for the community along the lines of where we are going.

We were very excited when the new Raspberry Pi 2 came out as this new model had 4 cores and bumped up the RAM to 1 GB.  We instantly ordered some to test things out such as active staking for the past few weeks and were pleased with the results.  Staking works great with Jumbucks on the Raspberry Pi 2!

(truncated)

This is very cool.  I have a few old Raspberry Pis lying around - never really found anything exciting to do with them - might just get hold of RP2 just for fun so I can try this out!
sr. member
Activity: 328
Merit: 525

Jumbucks Announces Official Raspberry Pi and Linux builds; bootstrap.dat file

The development team at Jumbucks are currently working on a larger project for the coin (and one that will benefit other Proof of Stake coins) so we wanted to provide something for the community along the lines of where we are going.

We were very excited when the new Raspberry Pi 2 came out as this new model had 4 cores and bumped up the RAM to 1 GB.  We instantly ordered some to test things out such as active staking for the past few weeks and were pleased with the results.  Staking works great with Jumbucks on the Raspberry Pi 2!

Keeping the hacker spirit alive, we are announcing official Jumbucks builds for Raspberry Pi and Linux.

These are available now at the Jumbucks 1.7 Release page on Github.

The latest upload files are:
Code:
d7bc7c926f14458c21f8571ddfb0b679  Jumbucks-1.7-RPi.tar.xz
a3917738e4fd5735bf89b68702fdcf07  Jumbucks-1.7-linux32.tar.xz
21ccde0cceb8f7109edf05d02c4dc92a  Jumbucks-1.7-linux64.tar.xz
0a747ca4dc608a043adb31147a396e26  bootstrap.dat.xz

We have also added a bootstrap.dat file.  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.

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 ~/.coinmarketscoin/ by default.

Mac

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

Windows

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

Here is the process snapshot of a Raspberry Pi 2 that is actively staking!



Jumbucks is a Fair Launch cryptocurrency which launched without an IPO and with zero premine.  Jumbucks currently runs as 100% Proof of Stake, and is currently traded on Bittrex, Cryptsy and will be available at launch on the upcoming AltMarket.com.  Find out more information at GetJumbucks.com.
sr. member
Activity: 328
Merit: 525

Jumbucks Announces a New Official Developer On The Team

Jumbucks is proud to announce a new official developer on the team, Luke Williams.

Founder's statement (Julian Yap):

A good developer is hard to find, especially in the realm of cryptocurrency.  A good developer should not only possess the right skill set (or potential to acquire this), but also have a correct mentality surrounding the goals and ethics of the project, in addition to the principles for which cryptocurrencies stand.  When I first spoke to Luke, we hit it off immediately as it became clear that he clearly understood my goals for Jumbucks as a cryptocurrency.  Over the past several weeks we have discussed several longer-term projects which we would like to explore for Jumbucks,  about which we both saw eye to eye.  Luke is the kind of developer who knows how to bring a project from inception to completion and oversee its future growth.  He is also the first developer I have asked to come on board with Jumbucks and we are very excited to have him on the team.

Luke has over 10 years of coding experience, and is proficient in: C, C++, Perl, Python, and Node.js, to name only a few. He is a huge Slackware Linux fan (user since '00), and maintains a number of scripts to assist with package management and dependency resolution. His experience also includes security, web development, software development, and has a background in science. When not working on various open source projects (such as Iquidus Explorer), he designs and implements customized systems for chemistry laboratories in New Zealand. He is very passionate about cryptocurrencies and envisions a future where many of societies' core systems are completely transparent, decentralized, and running on blockchains.

The best way to contact Luke is through IRC: xocel, or Twitter: @iquidus.

"The full power of blockchain technology has yet to be released, its benefits will extend far beyond currency. The JBS blockchain provides a great platform upon which new services and systems can be built. I'm very excited to join the Jumbucks team."
Luke Williams, Jumbucks developer


Jumbucks is a Fair Launch cryptocurrency which launched without an IPO and with zero premine.  Jumbucks currently runs as 100% Proof of Stake, and is currently traded on Bittrex, Cryptsy and will be available at launch on the upcoming AltMarket.com.  Find out more information at GetJumbucks.com.
sr. member
Activity: 328
Merit: 525
How many max supply JBS.. ??

Coin supply at the end of PoW (Block 31000): 3,293,010.45 JBS

Current supply can be looked up via the block explorer.
legendary
Activity: 2548
Merit: 1009
Leading Crypto Sports Betting & Casino Platform
How many max supply JBS.. ??
hero member
Activity: 512
Merit: 500
★YoBit.Net★ 1400+ Coins Exchange
sr. member
Activity: 328
Merit: 525
New Wallet Version 1.7 - Mandatory upgrade before block 250,000

Hi all,

A new wallet version 1.7 has been released for Jumbucks.  This is a mandatory upgrade before block 250,000.  This update includes a new inflation control and security setting called MAX_STAKE_BLOCK_REWARD as well as a modified Proof of Stake schedule for the long term future.  This version has been extensively tested so no issues should be apparent.

Directions:

Backup your wallet.dat file
Shut down the current wallet
Install the new version
Start the new version and verify everything works

Download links:

Mac OS X: http://getjumbucks.com/download/Jumbucks-Qt-1.7-signed-osx.dmg
MD5: 760c0f08d48d2c7c91a0c3e0ea6fb820
Wallet built and signed by @jyap.

Windows: http://getjumbucks.com/download/Jumbucks-1.7-windows.zip
MD5: e15aca9e5dca67f47e67045b63e2170e
Wallet built by @jyap.

Github: https://github.com/jyap808/jumbucks/releases/tag/v1.7

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 onwards. 2% interest and MAX_STAKE_BLOCK_REWARD = 1

Further details about MAX_STAKE_BLOCK_REWARD in this post.

Signed version tag:

This version has been tagged and signed as v1.7 in Git.  Verify it using my GPG public key on https://keybase.io/jyap.

Code:
$ git tag -v v1.7
object 1f38e39f559dcf3ab3147df2ea4cc07af6e97987
type commit
tag v1.7
tagger Julian Yap <> 1421739853 -1000

Signed 1.7 tag
gpg: Signature made Mon Jan 19 21:44:13 2015 HST using RSA key ID 7F661F0A
gpg: Good signature from "Julian Yap <>"
gpg:                 aka "keybase.io/jyap <>"

Thanks,
Julian
full member
Activity: 201
Merit: 100
Inflation control - Nice!  Keep up the good work.  I gotta say, with all of the ongoing drama in BTC and crypto in general, its always nice to turn to the sanity and pragmatic development going on in JBS. 
sr. member
Activity: 328
Merit: 525
MAX_STAKE_BLOCK_REWARD inflation control for Proof of Stake coin Jumbucks

This outlines a new setting called MAX_STAKE_BLOCK_REWARD that I intend to introduce to Jumbucks.

One of the common criticisms of the original Proof of Stake coin Peercoin is of the setting Maximum Coin Age.  With Peercoin the Minimum Coin Age is 30 days and the Maximum Coin Age is 90 days.  This means that coins must be idle for a minimum of 30 days to be eligible for staking.  Proof of Stake is based around stake weight which is calculated based on the amount of coins you have and the cumulative coin age.

Enforcing a Maximum Coin Age however means that it may not be possible for stakers with smaller amounts of coins to ever generate a Proof of Stake block as they may never gather enough stake weight within the Maximum Coin Age period to be eligible to stake a block.  Essentially those who have a large amount of coins stake the most amount of coins, for example this address which has over 550k PPC and this address which has over 220k PPC. To put this into perspective for a smaller staker, someone who is consistently staking 4000 PPC will stake approximately 5 blocks per month.  Someone who is staking 550 PPC will stake approximately 1 block a month.

Most Proof of Stake coins these days set their Maximum Coin Age to Unlimited which helps to solve this issue so that smaller stakers can still generate enough stake weight.

One downside to having an Unlimited Maximum Coin Age is that someone is able to accumulate a very large stake weight by not staking their coins for a long time and then later bringing them back on to the network and staking them.  This can lead to "inflationary spikes" where lots of new coins are minted in a short span of time.

Here is an Inflation Chart of Jumbucks for the last 100k blocks where inflationary spikes can be observed.



Here is an Inflation Chart of a random Proof of Stake alt coin for the last 100k blocks where this can also be observed.



Here is a section of an Inflation Chart of a random Proof of Stake alt coin with a very pronounced inflation spike.



MAX_STAKE_BLOCK_REWARD will be a new setting which defines the Maximum Reward that a Proof of Stake block can yield.  In my proposal, the maximum reward will be set to 50% of the Proof of Stake interest rate so 8% Proof of Stake interest would have a MAX_STAKE_BLOCK_REWARD setting of 4 JBS.  This setting should only effect a small percentage of blocks but will have very positive effects overall.

This will have the following effect:
  • Jumbucks will not experience inflation spikes in coin supply.
  • Coin supply and inflation will be more predictable and smoother, similar to Proof of Work coins with a fixed emission schedule.
  • Larger stakers will be encouraged to stake more often so that their rewards stay within the MAX_BLOCK_STAKE_REWARD limit.
  • MAX_BLOCK_STAKE_REWARD will serve as a security and safety check so that large Proof of Stake block rewards can't be mined.
  • Unlimited Maximum Coin Age can be retained so that Proof of Stake miners with smaller amounts of coins can still be fairly rewarded.

It is my belief that a cryptocurrency should be widely distributed and that Proof of Stake coins have a strong and diverse network.  This proposed changes reflect those ideals.  Please let me know if there are any questions or comments.
sr. member
Activity: 328
Merit: 525
Check out the Full Jumbucks Price Index on Brave New Coin!

http://bravenewcoin.com/jumbucks

sr. member
Activity: 328
Merit: 525
Blockparser is a utility I've used to create rich lists. Here is a fork I made with Jumbucks support

https://github.com/jyap808/blockparser

EDIT: This has been merged in the official project https://github.com/znort987/blockparser

Sample output.

Code:
$ ./parser allBalances

info: starting command "allBalances"
info: initializing hash tables
info: estimated number of blocks = 1.65K
info: estimated number of transactions = 0.26M
info: pass 1 -- walk all blocks and build headers ...
info: pass 1 -- took 156 secs, 219349 blocks, 0.12 Gigs, 0.77 Megs/secs                                            
info: pass 2 -- link all blocks ...
info: pass 2 -- done, did 0 late links
info: pass 3 -- wire longest chain ...
info: pass 3 -- done, maxHeight=214892
info: pass 4 -- full blockchain analysis ...
info: computing balance for all addresses
info:        1 blocks,    0.000 MegaAddrs ,   0.00% , elapsed =  0.00s , eta =  -nans ,
info: sorting by balance ...
info: dumping all balances ...
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
                 Balance                                  Hash160                             Base58   nbIn lastTimeIn                 nbOut lastTimeOut
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
         330896.16000000 fd08dd7eca1e74bb3d6ce3918394dd4d796d33ff JhbrvAmM7kNpwA6wD5KoAsbtikLWWMNPcM     11 Sat Sep 27 18:57:38 2014       8 Mon Dec 22 14:58:30 2014
         269006.11541405 5aa5ada8189f6b8f993a37c01b3e95bd2bd802ee JSoEdU717hvz8KQVq2HfcqV9A79Wihzusu     14 Tue Jan 13 04:26:23 2015       9 Fri Jan  9 22:16:59 2015
         186342.90000000 577b0a14f8d23aeaf9f97d9be36b5cab407e045c JSWVXHWeYNknPdG9uDrcBoZHztKMFCsndw      6 Mon Dec  8 23:24:24 2014       4 Wed Dec 17 22:53:06 2014
         107501.00000000 3c9dd11a9693c152601e9ff569fdca5c803d9081 JQ4SwV3CpvHs9kHzY3sZhZdgb5yWBa6ZXM      1 Fri Jan  9 04:02:37 2015       0 Thu Jan  1 00:00:00 1970
          62688.19705628 580184c9040e04cdfbc3d6a85507be90920163b7 JSZGd57bBNdLQktcvRKXMDdx9egFZAzYG3   1503 Wed Dec 31 00:00:09 2014    1256 Wed Dec 31 00:00:09 2014
          60639.00000000 f2f3fb79d6159f4e1e913e0a0d12ebe083073ec5 JggZ9HL8mshfZc4NyidrMKjeUBFtDdkySF      8 Fri Nov  7 14:48:50 2014       7 Mon Nov 10 09:09:38 2014
          57588.17483961 9689343517c7e61dc566265223fdde460003e68b JYFu4YLn4jqwT6eqprYBD5kZ3sUZ6VcSkH  26818 Tue Jan 13 07:05:53 2015   26599 Tue Jan 13 07:05:53 2015
          57049.84879243 7866143d49c22f335ffbdef924087254f5523136 JVWYiGT1Z6ktdaF8C4n9gTsjRQHpajSYNE   2941 Wed Dec 31 02:27:18 2014    2683 Wed Dec 31 02:27:18 2014
          55000.00000000 c93df02a68edd310bc4d837b238b24974a510b81 Jct1MmNjfTtzSrppcvVzXUsbY9W3qiTX59      6 Sat Sep 27 13:13:20 2014       5 Thu Oct  2 10:15:38 2014
...
(truncated)

Here is an example of a transaction.

Code:
$ ./parser txinfo 9d113596487f46ebe89a46bbd5bf2a2c7ce212bb13cfdc94911e752cdaff9a0b

info: starting command "dumpTX"
info: dumping 1 transactions

info: initializing hash tables
info: estimated number of blocks = 1.64K
info: estimated number of transactions = 0.26M
info: pass 1 -- walk all blocks and build headers ...
info: pass 1 -- took 156 secs, 218967 blocks, 0.12 Gigs, 0.76 Megs/secs                                            
info: pass 2 -- link all blocks ...
info: pass 2 -- done, did 0 late links
info: pass 3 -- wire longest chain ...
info: pass 3 -- done, maxHeight=214511
info: pass 4 -- full blockchain analysis ...
TX = {

    version = 1
    minted in block = 5
    mint time = 1409691752 (Tue Sep  2 21:02:32 2014 GMT)
    txHash = 9d113596487f46ebe89a46bbd5bf2a2c7ce212bb13cfdc94911e752cdaff9a0b

    input[0] = {

            0x55 OP_5
                 OP_PUSHDATA(1, 0x02)
        generation transaction
        based on block height, reward = 50.00000000
        hex dump of coinbase follows:

        000000: 55 01 02                                          U..
    }


    output[0] = {

        value = 1.00000000
        challenge script, bytes=25 :
            0x76 OP_DUP
            0xA9 OP_HASH160
                 OP_PUSHDATA(20, 0x95739a921628df7a07e52f83c4d53fb75ef0ce18)
            0x88 OP_EQUALVERIFY
            0xAC OP_CHECKSIG
        scriptType = 'pays to hash160(pubKey)'
        scriptPaysToAddr = 'JYAAWYZrL4HbuCmPtYCBaebSdLKXsQsFM2'
        scriptPaysToHash160 = '95739a921628df7a07e52f83c4d53fb75ef0ce18'
    }

    nbInputs = 1
   nbOutputs = 1
    byteSize = 96
    lockTime = 3815998976
     valueIn =  50.00
    valueOut =  1.00
}
sr. member
Activity: 328
Merit: 525
Charlie Shrem bought a few packs of cards.

Here is his tweet:
https://twitter.com/CharlieShrem/status/554833189181882369

We still have a few packs left. (Not that many).

You can get them from:

http://cryptochips.net
sr. member
Activity: 328
Merit: 525

Jumbucks Multipool Is Now The Official Multipool For Unobtanium!

The Unobtanium community is excited to announce the selection of the Jumbucks Multicoin Multipool as an official UNO pool for X11 and Scrypt miners!

"The Jumbucks community is pleased to announce the addition of Unobtanium (UNO) to the growing list of coins integrated into the Jumbucks Multicoin Multipool. Beginning immediately, miners can elect to receive Unobtanium payouts for the mining hash they contribute to the multipool," said Julian Yap, the founder of Jumbucks.

"While the Jumbucks multipool will not be mining Unobtanium directly, Scrypt and X11 miners can now accumulate UNO through their mining activities," said Falling Knife, UNO's Community Manager.  "Jumbuck's UNO payouts will be acquired through buys from the market, and this consistent buying pressure will further support the price of Unobtanium. This collaboration between the Unobtanium and Jumbucks’ communities is an exciting new option to buoy the price of UNO."

Unobtanium is a long time top-50 cryptocurrency on CoinMarketCap.com. Fairly launched in 2013 with no pre-mine, and with an active community and developers, Unobtanium is a rare Sha256d cryptocurrency that has passed through its inflationary phase. Only 250,000 UNO will ever be produced in 300 years.  Its unique non-inflationary characteristics have attracted bullion enthusiasts, miners, and long term investors to the Unobtanium community.

Jumbucks is a Fair Launch cryptocurrency which launched without an IPO and with zero premine.  Jumbucks currently runs as 100% Proof of Stake, and is currently traded on Bittrex, Cryptsy and will be available at launch on the upcoming AltMarket.com.  Find out more information at GetJumbucks.com.

To get started, miners can point their X11 and Scrypt hash at the Jumbucks multipool, using their UNO deposit address in place of the username.  Learn more about mining for Unobtanium payouts at http://mp.getjumbucks.com.

For more information on Unobtanium and to engage in the community, visit http://unobtanium.uno.
sr. member
Activity: 328
Merit: 525
All participants in the Jumbucks Christmas Staking Giveaway have all been paid. Thank you all for your continued support Smiley
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