Update 04 march 2021

Good old Grandcoin GDC cryptocurrency is still pretty much alive.

Block explorer   http://explorer.scrypt.ovh/grandcoin/
Exchange          https://www.freiexchange.com/market/GDC/BTC
Twitter               https://twitter.com/GrandcoinGDC
Crypto City        https://www.crypto-city.com/index.php/grandcoin-gdc
Reddit                https://www.reddit.com/r/Grandcoin/
Discord              https://discordapp.com/invite/ZrdbSNZ

Windows wallet
https://web.archive.org/web/20180207001658/http://grandcoin.info/downloads/GDC-windows-wallet.rar

Wallet with 2018 bootstrap [1.1GB]
https://download.crypto-city.com/gdc/Grandcoin.zip

Community MAC/OS wallet
https://web.archive.org/web/20180207001658/http://grandcoin.info/downloads/Grandcoin-Qt.dmg

Nodes 24x7 or recently seen

addnode=1.206.16.214
addnode=5.196.91.94
addnode=24.93.104.14
addnode=36.27.24.151
addnode=37.59.8.99
addnode=37.153.237.21
addnode=37.221.253.78
addnode=46.165.139.220
addnode=49.228.237.50
addnode=79.137.57.54
addnode=85.15.179.171
addnode=87.119.66.110
addnode=89.185.100.225
addnode=91.206.16.214
addnode=94.23.50.78
addnode=98.116.58.2
addnode=108.54.243.169
addnode=112.213.37.145
addnode=118.208.97.154
addnode=134.209.96.190
addnode=161.97.175.4
addnode=183.134.170.224
addnode=183.159.68.243
addnode=184.22.159.93
addnode=185.63.96.113
addnode=185.82.203.241
addnode=185.235.129.19
addnode=203.158.45.134
addnode=212.51.133.110

=========   end   ==========


Update: 6 September 2021: block halving (125 to 65.5 GDC GrandCoin)

Permanent online are 14 .. 18 nodes.

Block explorer http://explorer.scrypt.ovh/grandcoin/ online but hanging at 17 august (please repair!)

Any news from the Cryptopia claim portal (Grant Thornton NZL) jet? 
Last update there: 10 june 2021 - https://www.grantthornton.co.nz/update-for-cryptopia-claimants-and-stakeholders-10-june-2021/

- / -

Update:

6 September 2021: block halving (125 to 65.5 GDC GrandCoin)

Permanent online are 14 .. 18 nodes.

Block explorer http://explorer.scrypt.ovh/grandcoin/ online but hanging at 17 august (please repair!)

Any news from the Cryptopia claim portal (Grant Thornton NZL) jet? 
Last update there: 10 june 2021 - https://www.grantthornton.co.nz/update-for-cryptopia-claimants-and-stakeholders-10-june-2021/

- / -

Update:

6 September 2021: block halving (125 to 65.5 GDC GrandCoin)

Permanent online are 14 .. 18 nodes.

Block explorer http://explorer.scrypt.ovh/grandcoin/ online but hanging at 17 august (please repair!)

Any news from the Cryptopia claim portal (Grant Thornton NZL) jet? 

- / -

=========    Update 04 march 2021    =========

Good old Grandcoin GDC cryptocurrency is still pretty much alive.

Block explorer   http://explorer.scrypt.ovh/grandcoin/
Exchange          https://www.freiexchange.com/market/GDC/BTC (currently offline)
Twitter               https://twitter.com/GrandcoinGDC

Windows wallet
https://web.archive.org/web/20180207001658/http://grandcoin.info/downloads/GDC-windows-wallet.rar

Wallet with 2018 bootstrap [1.1GB]
https://download.crypto-city.com/gdc/Grandcoin.zip

Community MAC/OS wallet
https://web.archive.org/web/20180207001658/http://grandcoin.info/downloads/Grandcoin-Qt.dmg

Nodes 24x7 or recently seen

addnode=1.206.16.214
addnode=5.196.91.94
addnode=24.93.104.14
addnode=36.27.24.151
addnode=37.59.8.99
addnode=37.153.237.21
addnode=37.221.253.78
addnode=46.165.139.220
addnode=49.228.237.50
addnode=79.137.57.54
addnode=85.15.179.171
addnode=87.119.66.110
addnode=89.185.100.225
addnode=91.206.16.214
addnode=94.23.50.78
addnode=98.116.58.2
addnode=108.54.243.169
addnode=112.213.37.145
addnode=118.208.97.154
addnode=134.209.96.190
addnode=161.97.175.4
addnode=183.134.170.224
addnode=183.159.68.243
addnode=184.22.159.93
addnode=185.63.96.113
addnode=185.82.203.241
addnode=185.235.129.19
addnode=203.158.45.134
addnode=212.51.133.110

=========   end   ==========

Update 04 march 2021

Good old Grandcoin GDC cryptocurrency is still pretty much alive.

Block explorer   http://explorer.scrypt.ovh/grandcoin/
Exchange          https://www.freiexchange.com/market/GDC/BTC (currently offline)
Twitter               https://twitter.com/GrandcoinGDC

Windows wallet
https://web.archive.org/web/20180207001658/http://grandcoin.info/downloads/GDC-windows-wallet.rar

Wallet with 2018 bootstrap [1.1GB]
https://download.crypto-city.com/gdc/Grandcoin.zip

Community MAC/OS wallet
https://web.archive.org/web/20180207001658/http://grandcoin.info/downloads/Grandcoin-Qt.dmg

Nodes 24x7 or recently seen

addnode=1.206.16.214;
addnode=5.196.91.94;
addnode=24.93.104.14;
addnode=36.27.24.151;
addnode=37.59.8.99;
addnode=37.153.237.21;
addnode=37.221.253.78;
addnode=46.165.139.220;
addnode=49.228.237.50;
addnode=79.137.57.54;
addnode=85.15.179.171;
addnode=87.119.66.110;
addnode=89.185.100.225;
addnode=91.206.16.214;
addnode=94.23.50.78;
addnode=98.116.58.2;
addnode=108.54.243.169;
addnode=112.213.37.145;
addnode=118.208.97.154;
addnode=134.209.96.190;
addnode=161.97.175.4;
addnode=183.134.170.224;
addnode=183.159.68.243;
addnode=184.22.159.93;
addnode=185.63.96.113;
addnode=185.82.203.241;
addnode=185.235.129.19;
addnode=203.158.45.134;
addnode=212.51.133.110;

=========   end   ==========

Since there is a nasty echo from the past in this forum ....

Situation (sept 2018)

Latest Greenbacks Cryptocurrency Windows wallet, filename: gbv25.rar
***   http://www.filedropper.com/gbv25   ***
MD5 checksum should read: da490983f95ee41f2221bf39897a7aa7

Source can be found on GitHub: https://github.com/greenbackscurrency/greenbacks

--------------------------------------
addnode=5.255.67.111
addnode=74.118.157.130
addnode=82.161.218.8
addnode=185.111.72.197
--------------------------------------

Need a workaround for a slow, large and unworkable wallet / client?
Read https://bitcointalk.org/index.php?topic=740744.msg44341186#msg44341186

I hope you succeeded in installing this wallet and restoring your wallet again. I noticed a new node so I was wondering how things are getting along. Any luck yet?


Situation (sept 2018)

Latest Greenbacks Cryptocurrency Windows wallet, filename: gbv25.rar
***   http://www.filedropper.com/gbv25   ***
MD5 checksum should read: da490983f95ee41f2221bf39897a7aa7

Source can be found on GitHub: https://github.com/greenbackscurrency/greenbacks

--------------------------------------
addnode=5.255.67.111
addnode=74.118.157.130
addnode=82.161.218.8
addnode=185.111.72.197
--------------------------------------

Need a workaround for a slow, large and unworkable wallet / client?
Read https://bitcointalk.org/index.php?topic=740744.msg44341186#msg44341186

Well, your waiting is hereby rewarded .... finally  

Apologies for keeping you waiting.

Could you please try: http://www.filedropper.com/gbv25
Latest known Greenbacks Cryptocurrency Windows wallet, original filename: gbv25.rar
MD5 checksum should be: da490983f95ee41f2221bf39897a7aa7

Greenback staking, huge wallet, non-responsive and unworkable client.

If you've got a GB wallet staking you will inevitably end up with a functional but completely non-responsive and unworkable client/wallet. Such a wallet will be staking fine though! But even unlocking the wallet for staking will be killing. There is a workaround!

First of all when your wallet hits more than 100k transactions you will experience serious slowing. From there on and especially above 200k transactions your wallet will be impossible to handle. I guess the amount of transactions logged in the wallet.dat and the monstrous size (100 ... 200+ mb) are the cause. A running wallet will keep staking well though, so behind the surface it does it's job properly! 

A first step to progress is made by transferring your data directory to an SSD (USB) drive. This will increase disk access and transfer enormously. Change the shortcut / batch file that starts up the GB wallet to: greenbacks.exe -datadir="A:\directory\of-choise". Using a network drive as data directory is a bad practice.

Make a BACKUP copy of the entire data directory regularly!!
Do NOT make a backup while the client is running: you might corrupt your wallet file.
- wallet.dat -> obvious
- debug.log -> if too large: rename for backup and a new file will be generated at startup
- blk0001.dat -> blockchain
- txleveldb -> block database which CAN be rebuild but it takes AGES! backup well!
- db.log -> tell you if you have database problems. This file should stay empty.

To regain access the trick is to have a synchronized wallet, keep it running while you disable networking. Your wallet will stay synchronized but it will stop staking and after some time [0 ... 30 min(!)] your interface will be fully responsive and workable again! You can now lock/unlock, properly shutdown and make a backup (!), enter new addresses and do your thing, but especially schedule transactions! Once you have finished your business you can enable networking again and after some time business will be as usual and you will see your transactions being processed.

IT DOESN'T HURT TO MAKE A BACKUP OF YOUR WALLET.DAT *** BEFORE *** THE TRANSACTIONS ARE ENCLOSED IN YOUR WALLET !!!

Unfortunately it isn't possible to clean out or reorganize the wallet.dat file. The only way to go on with GB - Greenbacks is to set up a new node, create new addresses and step by step transfer your coins from the old wallet to your the new wallet on your new node. Adding the new addresses to your old node's address book makes your life easier. The step-by-step process handles two things: it spreads the risk of losing coins, and there are more fragments to stake on, so staking will pick much faster. Transferring coins out of your old wallet (automatic coin selection!) will make your old wallet faster!

A new node can be created by copying the old node, dispose of wallet.dat, debug and db.log and start. So you don't have to sync your wallet from scratch over the network. Saves lots of time. If you want to restore an old wallet, copy it in now and re-scan.

Network is growing. Haven't got space on the web to post a windows wallet but I have the original latest archive available.
I will try to find a place and share it.

In the meanwhile (19 July 2018) ....

addnode=5.255.67.111
addnode=74.118.157.130
addnode=82.161.218.8
addnode=185.111.72.197

Are there people experiencing problems with their wallet (slow, extremely slow, almost inoperable)? I may have a workaround.

Not entirely true. I had one node running but something got damaged after a power outage. The block explorer disappeared before that.
Recently repaired the mess and ... hey! There was another node and my wallet synchronised again. Now and then there are 3 or 4 nodes up!

Most stable (and always there):

addnode=5.255.67.111:12733

Maybe we can get some life in this coin after the post-Cryptsy-mess.