Gulden wallet on a Raspberry Pi 3

Yes we are back again, long time no update here but I am trying to spend some more time again on my website. I have been busy with two new things in the world of crypto coins, first one is : Gulden ,great (scrypt) coin made in Holland ! awesome features, fast confirmations, strong community, great support, many nice features also check: nocks . Second is the Raspberry Pi 3 ! released on february 29 2016 and it is 64 bit ! also build-in wifi and blue-tooth. So I ordered on with powersupply and 32GB  SDcard at and received the Pi3 within 2 days. Now combine the two, let install the Gulden wallet on the Raspberry Pi 3.

First thing is to install an OS on the Pi 3, I choose Raspbian and used the NOOBS way to install it, simply following their instructions and you have installed Raspbain in no time.


Once Raspbian is installed and your Pi is started up we can start to install the Gulden wallet.

Latest version: v1.5.5.0 (19-11-2015)

Open a new terminal window, be sure you are in you home folder but it should start in you home folder as soon as you open Terminal. Execute these commands:

first we update repositories
pi@raspberrypi:~ $ sudo apt-get update
install dependencies we need for the Gulden wallet
pi@raspberrypi:~ $ sudo apt-get install build-essential libtool autotools-dev autoconf pkg-config libssl-dev libdb-dev libdb++-dev libboost-dev libboost-chrono-dev libboost-filesystem-dev libboost-program-options-dev libboost-system-dev libboost-test-dev libboost-thread-dev libtool
install dependencies we need to compile QT needed for a wallet with GUI
pi@raspberrypi:~ $ sudo apt-get install libqt4-dev libprotobuf-dev protobuf-compiler libqrencode-dev
download Gulden source files
pi@raspberrypi:~ $ git clone
go to the Gulden folder
pi@raspberrypi:~ $ cd gulden-official
pi@raspberrypi:~/gulden-official $ ./
run configure
pi@raspberrypi:~/gulden-official $ ./configure --with-incompatible-bdb --enable-cxx --disable-shared --with-pic --prefix=$BDB_PREFIX
run make : this can take a while, 30 or more minutes
pi@raspberrypi:~/gulden-official $ make
run make install
pi@raspberrypi:~/gulden-official $ sudo make install

when everything is done you can start up the wallet
once the wallet is started it should start syncing with the blockchain.

Gulden wallet on Raspberry Pi 3

Gulden wallet on Raspberry Pi 3

In the picture above you see it is importing from a bootstrap.dat file, if you don’t have a bootstrap.dat it will sync with the network.

Check out these links for more Gulden information and support:


World Aid Coin

World Aid Coin

World Aid Coin

I want to tell you all a story about a new crypto coin: World Aid Coin. There are a lot of alternative crypto coin that pop up every once in a while. By now there are over a 100 different crypto coins, unfortunately most of these coins are pump-and-dump-coins and people want to make a quick buck with it. These coins have no innovation they are are only about mining and making money, not all coins, but 90+ % is.

World Aid Coin (WAC) is new crypto coin and this one is very different! It is developed to help people around the world who are in need. A great social aspect this coin has. I won’t write about all technical details but the big differences are:

  • Mining: 50% of a mined block goes to the WAC foundation and the other 50% to the miner who found a block. Current total block reward is 50 WAC.
  • WAC foundation has several Guardians, each Guardian puts his/her time and effort in a special project to help people in need or helps out the WAC foundation (technical stuff, markering, etc)
  • All WAC funds the foundation receives and spends is open to all people, so no secret stuff.

All information about WAC you can find here: .

HELP OUT: You can help in many different ways !

  • You can ask to become a Guardian.
  • Join the forum to help with ideas and other stuff.
  • Start mining some WAC coins for yourself, this way you can have some WAC in your wallet to spend or donate and you mine for the foundation too. Info about mining WAC you can find on the website or forum.

WALLET: the Wallet for WAC is still in development, a stable version is available for Windows. Soon the new/stable version of the WAC wallet will be available for Linux and OSX. Get your wallet here or go to and click on Get a Wallet.

MINING: For now you can only solo-mine WAC coins. There is no miningpool yet but they are working on that (or you can start one yourself). WAC uses the Scrypt-N algorithm (ASIC-proof). Best way to mine is with one or more powerful (ATI Radeon) GPU(s).

GET WAC: you can buy, sell, trade WAC on a exchange. The first exchange to support WAC is . The WAC community is working on getting WAC available on more exchanges.

SUPPORT by playing a game: You can support by playing a great game: The Golden Egg. And you know what the great thing is about it? We can win some serious bitcoin (BTC) with this game. You can buy some Eggs in this game to play with, with bitcoin and maybe double it! And there is more, there is guaranteed return. You must choose a sponsor to play the game, you can you my link: Using this link you will be able to register, then buy eggs (with bitcoin) and play the game. No worries, I won’t get any extra profit if you use my link and I become your sponsor. We just can help out each other in the game.

The Golden Egg

The Golden Egg

A quote from the makers of The Golden Egg:

The Golden Egg: Invest in your future while helping others in the world. You are guaranteed double your investment back by World Aid Coin and you can multiply your bitcoins. Chances like this do not come along very often.

To stay updated about WAC, visit (and/or register at) the forum:

WorldAidCoin is also on facebook:


Great new SHA256 Mining Pools

I mined at btcguild, triplemining and st Eligius pools, they are stable and reliable pools. But then I read on bitcointalk about a new pool: CKPOOL made by: ckpool code by ckolivas and ckdb code by kano.

You can mine at with PPLNS reward with (only) 0.9% fee. It has a great performance. I mine at this pool for some days now and I see it has better performance than other pools I used before.

If you are a real dare-devil: mine SOLO at This pool is awesome, you mine together with other miners to find a block but if you are the one that finds the block you will get the whole reward of 25 BTC!! (minus a small fee of 0.5%). It is anonymous, just mine just with your walletaddress as worker, no registration required. I know the change you will find a block is very smal, it’s like a gamble but it is fun and exciting.

So come on fellow miners , join us at and

Here is a quote from Ckolivas about CKPOOL:

About ckpool

Ckpool is a project by the cgminer development team designed to complete the circle between miners and pools from cgminer to ckpool. The bulk of the code work for this was commissioned and paid for, however I provided an incentive to the group commissioning the code to open the software up to all by charging less for free software than for closed code. Ultimately this should benefit bitcoin far more than me simply working on code for another pool. I intentionally chose to write most of the code from the ground up and not use external libraries to have complete control over all the code given past experiences of difficulty to debug failures in library code that was outside our domain with cgminer. The separation of the pool code from the database code allows the pool code to be ultra-scalable and extremely low overhead by dissociating any concept of share counts, user accounts, authentication, front ends, payschemes etc. etc. These can be as vastly different from the envisioned ckdb+postgresql+php interface as the administrator desires without any change to the core pool functionality.



The CKPool is doing great ! More miners joined and total hashpower had grown to 600+ THs and the pool has found 4 Blocks already in just 1 month ! So join us fellow miners ! CKPool BTC mining CKPool BTC mining

Crypto Cause: Spinal Surgery Bill Funding!

Update September 20:
The cause for Scott has ended, we all raised a good sum of dollars to help him pay his medical bills.


Crypto Cause : Help out Scott Fargo !

Crypto Cause : Help out Scott Fargo !

Crypto Cause helps out people in need, special people who do lots of (free)work for the Bitcoin (and other crypto currencies) community. The cause that is activated on August 28th is for raising funds for Scott Fargo to get his medical bills paid. Here is his story:

Scott writes articles and does review of mininghardware at . About Scott:

I am a disabled former Systems Admin, computer tech, business manager enjoying crytpo currencies. I am deeply involved in the mining ecosystem and physical coins, It fascinates me how it has brought people from all over the world together into a tight knit supportive community with commerce and tech.


I friendly ask everybody to help out Scott, you can donate or buy great Hashlets here:

I donated some $ and bought a Hashlet PRIME 5M/hash which is mining now at ZenMinerCloud.

One String Miner Test 1

Today I was wondering why the first 8 build OSM (One String Miner) only hash between 23 en 26 GHs. I measured the voltage input in the boards: 11.4 V !! The PCI-E connectors from the PSU “only” supply 11.4V instead of 12V. Weird, I will investigate tomorrow. I had 4 DIY-1 kits left, build the first one just standard: pcb + heatsink. For power I used a cheap 12V 10A PSU from Dealextreme. You can adjust the 12V power output on the PSU some time for some tests:

No thermal paste between PCB and Heatsink + Artic F8 Fan (very low RPM)

Voltage [V] Temp [°C] Hashrate [GH/s]
12,22 56 32,8
12,30 58 32,26
12,14 57 32
11,91 54,6 31
12,40 59 31,6
12,10 56 31,4

With thermal paste between PCB and Heatsink + No Fan We will see how temperate gets higher after x seconds

Voltage [V] Temp [°C] Hashrate [GH/s] Time [sec]
12,10 35 31,70 10
12,10 36,6 31,80 60
12,10 39,2 32,05 120
12,10 40 32,08 180
12,10 40,7 32,14 240

With thermal paste between PCB and Heatsink + With Fan (other than the Artic) We will see how temperate gets drops after x seconds. I connected a fan “on the fly” and started measuring form 40,7 °C to ….

Voltage [V] Temp [°C] Hashrate [GH/s] Time [sec]
12,10 40,7 32,14 0
12,10 35 32,06 20
12,10 32,8 32,04 180
12,10 32 32,04 240

Conclusion: use thermal paste (non conductive), it could reduce temp more than 10°C. As an extra test I recuded power input to the board to 11,5V and the hashrate dropped to 26 to 29 GHs. So the Voltage input should be at least 12V for 30+ GHs hashrate. What you also see is you will loose some power thru the cables. 12.10V on the PSU = 12.02V on the PCB. On the photos you will see also the other 8 boards connected to the PC-PSU in cgminer (0,2,3,4,5,6,7,8,9).

All boards are build now…

Movie (not hashing at optimal hashpower yet)

Update 00:26h: Be Quiet Pure Power 600W PSU sucks, it only provides 11,5V from the PCI-E and other 12V connectors. Took a Seasonic S12G and this PSU provides 12.1V (max), better  Grin de 4 DIY1 boards with the cheapo dealextreme 12V 10A PSU is turned up to 12.6V. Now 12 boards are hashing at a total of ± 400GH/s (± 33GH/s per board). Next few days more tuning and testing. cgminer 12 OSM @ ±400GH/s

One String Miner

Today I received my One String Miners. Great design by C-scape and Intron based on Bitfury chips. I won some miners at an auction at . Ben Turas is selling these great miners, designed in the Netherlands, produced in Asia!
Check out his salestopic.

The OSM is based on Bitfury chips and each board contains 15 chips, hashing 25+ GH/s without heat sink and 30+ GH/s with heat sink.  Each board runs from a single 12V supply, using ~25W.

I have 4 DIY1 and 4 DIY2 kits. This evening I build up the 4 DIY2 kits and build a small tower. Quality of the boards and other materials is high. Building was very easy. Screw the pcb to the heatsink, connect the wires to the powerconnectors, that’s about it. I used a BeQuiet PurePower 600W PSU I had laying around. Attached two fans, all in a temporary setup. 10 Port USB Hub is a Rosewill RHB-500. I used an ArchLinux PC, downloaded and compiled CGminer 3.12.3, turned on the miners, started CGMiner and it detected all miners. 3 miners were “ZOMBIE” at first but after just 10 seconds all boards were recognized and hashing. All works great with any issues. Temperatuur is stable with only 2 fans (in the most efficient position), 30 to 40 degrees Celcius. I haven’t tuned them yet so they hash around 25GH/s per board.

For now some photos, next few days I will do some more tests and tuning. I realy like these boards you should get some too!

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