Which Algo do you think is the best/holds the most interest with the public atm?

Scrypt-n pretty much had the market for a while, but with x11 and groestl (However you're supposed to say that!) coming up, which will become the new standard?

As a hypothetical situation, what is the minimum hashrate/number of average miners needed by a pool to find blocks at a regular-ish pace (not days between blocks or anything like that) with litecoin?

What about darkcoin, or vertcoin?

After the recent crashes in bitcoin prices etc, litecoin profitability has also fallen quite a bit. My 1.2 MHs miner is only getting an equivalent btc value of 0.0055 Btc per day, when not too long ago it was pulling in 0.014. Will this recover back to what it was or thereabouts, or will it continue to fall?

I've had this miner (http://drillbitsystem.com/shop/bitcoin-miners/avalon-16-by-drillbit-systems/) running for a while now with one 120mm fan underneath and two 80mm fans blowing through and over the heatsink/board. It's adequate cooling, but takes up space, and sounds like a jet taking off.

Is there any other way you'd reccomend cooling it?

I've noticed the chips are exposed on the top, would those tiny heatsinks for the antminers (I think) help at all, or does not much heat go through the top?



Thanks,

Nugget_bram

I've finally managed to compile a windows wallet for my alt-coin, no errors yet when I try to start it absolutely nothing happens.

Any ideas? I have all the dlls in the folder.

Thanks,

Trying to make a Qt-wallet for an alt-coin, and finally got it to compile with the -B command as recommended by a post somewhere.

It makes a .exe file, but when I run it absolutely nothing happens.

Without the -B, it gives me errors like this:

Code:

./build\leveldb.o:leveldb.cpp:(.text+0x425): undefined reference to `leveldb::Ne
wBloomFilterPolicy(int)'
./build\leveldb.o:leveldb.cpp:(.text+0x6a3): undefined reference to `leveldb::En
v::Default()'
./build\leveldb.o:leveldb.cpp:(.text+0x768): undefined reference to `leveldb::St
atus::ToString() const'
./build\leveldb.o:leveldb.cpp:(.text+0x913): undefined reference to `leveldb::St
atus::ToString() const'
c:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.8.2/../../../../i686-w64-mingw32/bi
n/ld.exe: ./build\leveldb.o: bad reloc address 0x2 in section `.text$_ZN13leveld
b_errorD1Ev[__ZN13leveldb_errorD1Ev]'
collect2.exe: error: ld returned 1 exit status
Makefile.Release:287: recipe for target 'release\Altcoin-qt.exe' failed
mingw32-make: *** [release\Altcoin-qt.exe] Error 1

Any ideas on why this is happening?

As a hypothetical situation, what would be the optimum block time for a coin to be worth $1 USD?

A coin that isn't hugely popular or anything, just "around" with a block reward of 1 for simplicity, what do you think would be the best block time to give this coin a $1 value? Or does it really not have anything to do with the mathematical rarity and more how the coin is adopted and used?

After looking at a few exchanges, their prices seem to differ by about $40 or so, sometimes more. Would it be at all worth it to buy 1 BTC from one exchange then sell on another immediately?
I realize there are fees etc, but how much would they impact?

I'm attempting to compile a coin wallet on windows after looking at it and thinking "can't be too bad", I'm now ripping out my hair trying to determine what is wrong with it. qmake runs fine, but when I run the make -f Makefile.Release, it only gets through 10 seconds of compiling.

Code:

Setting up a MinGW/Qt only environment...
-- QTDIR set to C:\Qt\4.8.5
-- PATH set to C:\Qt\4.8.5\bin
-- Adding C:\MinGW\bin to PATH
-- Adding C:\WINDOWS\System32 to PATH
-- QMAKESPEC set to win32-g++

C:\Qt\4.8.5>cd ..

C:\Qt>cd ..

C:\>cd deps/gammacoin-master

C:\deps\gammacoin-master>make -f Makefile.Release
g++ -c -pipe -O2 -frtti -fexceptions -mthreads -fdiagnostics-show-option -Wall -
Wextra -Wformat -Wformat-security -Wno-unused-parameter -DUNICODE -DQT_GUI -DBOO
ST_THREAD_USE_LIB -DBOOST_SPIRIT_THREADSAFE -DUSE_IPV6 -DNO_SYSTEM_INCLUDES -DWI
N32 -D_MT -DQT_DLL -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_H
AVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -DQT
_NEEDS_QMAIN -I"..\..\Qt\4.8.5\include\QtCore" -I"..\..\Qt\4.8.5\include\QtGui"
-I"..\..\Qt\4.8.5\include" -I"src" -I"src\json" -I"src\qt" -I"..\boost_1_53_0" -
I"..\db\build_unix" -I"..\openssl-1.0.1e\include" -I"..\..\Qt\4.8.5\include\Acti
veQt" -I"build" -I"build" -I"..\..\Qt\4.8.5\mkspecs\win32-g++" -o build\bitcoin.
o src\qt\bitcoin.cpp
In file included from ..\boost_1_53_0/boost/thread/shared_mutex.hpp:18:0,
                 from ..\boost_1_53_0/boost/thread/detail/thread_group.hpp:9,
                 from ..\boost_1_53_0/boost/thread/thread.hpp:26,
                 from ..\boost_1_53_0/boost/thread.hpp:13,
                 from src/util.h:22,
                 from src/bignum.h:13,
                 from src/main.h:9,
                 from src/wallet.h:9,
                 from src/init.h:9,
                 from src\qt\bitcoin.cpp:11:
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp: In constructor 'boost::shar
ed_mutex::shared_mutex()':
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:98:33: warning: missing init
ializer for member 'boost::shared_mutex::state_data::shared_waiting' [-Wmissing-
field-initializers]
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:98:33: warning: missing init
ializer for member 'boost::shared_mutex::state_data::exclusive' [-Wmissing-field
-initializers]
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:98:33: warning: missing init
ializer for member 'boost::shared_mutex::state_data::upgrade' [-Wmissing-field-i
nitializers]
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:98:33: warning: missing init
ializer for member 'boost::shared_mutex::state_data::exclusive_waiting' [-Wmissi
ng-field-initializers]
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:98:33: warning: missing init
ializer for member 'boost::shared_mutex::state_data::exclusive_waiting_blocked'
[-Wmissing-field-initializers]
In file included from ..\db\build_unix/db.h:30:0,
                 from ..\db\build_unix/db_cxx.h:64,
                 from src/db.h:15,
                 from src/main.h:13,
                 from src/wallet.h:9,
                 from src/init.h:9,
                 from src\qt\bitcoin.cpp:11:
c:\mingw\bin\../lib/gcc/mingw32/4.6.2/../../../../include/pthread.h: At global s
cope:
c:\mingw\bin\../lib/gcc/mingw32/4.6.2/../../../../include/pthread.h:585:24: erro
r: conflicting declaration 'typedef struct ptw32_handle_t pthread_t'
src/util.h:555:16: error: 'pthread_t' has a previous declaration as 'typedef voi
d* pthread_t'
In file included from ..\boost_1_53_0/boost/interprocess/errors.hpp:37:0,
                 from ..\boost_1_53_0/boost/interprocess/exceptions.hpp:20,
                 from ..\boost_1_53_0/boost/interprocess/shared_memory_object.hp
p:17,
                 from ..\boost_1_53_0/boost/interprocess/ipc/message_queue.hpp:1
7,
                 from src\qt\bitcoin.cpp:23:
..\boost_1_53_0/boost/interprocess/detail/win32_api.hpp:861:116: warning: declar
ation of 'void* boost::interprocess::winapi::CreateMutexA(boost::interprocess::w
inapi::interprocess_security_attributes*, int, const char*)' with C language lin
kage [enabled by default]
..\boost_1_53_0/boost/thread/win32/thread_primitives.hpp:119:55: warning: confli
cts with previous declaration 'void* boost::detail::win32::CreateMutexA(boost::d
etail::win32::_SECURITY_ATTRIBUTES*, int, const char*)' [enabled by default]
..\boost_1_53_0/boost/interprocess/detail/win32_api.hpp:866:127: warning: declar
ation of 'void* boost::interprocess::winapi::CreateSemaphoreA(boost::interproces
s::winapi::interprocess_security_attributes*, long int, long int, const char*)'
with C language linkage [enabled by default]
..\boost_1_53_0/boost/thread/win32/thread_primitives.hpp:120:55: warning: confli
cts with previous declaration 'void* boost::detail::win32::CreateSemaphoreA(boos
t::detail::win32::_SECURITY_ATTRIBUTES*, long int, long int, const char*)' [enab
led by default]
In file included from ..\boost_1_53_0/boost/thread/shared_mutex.hpp:18:0,
                 from ..\boost_1_53_0/boost/thread/detail/thread_group.hpp:9,
                 from ..\boost_1_53_0/boost/thread/thread.hpp:26,
                 from ..\boost_1_53_0/boost/thread.hpp:13,
                 from src/util.h:22,
                 from src/bignum.h:13,
                 from src/main.h:9,
                 from src/wallet.h:9,
                 from src/init.h:9,
                 from src\qt\bitcoin.cpp:11:
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp: In member function 'T boost
::shared_mutex::interlocked_compare_exchange(T*, T, T) [with T = boost::shared_m
utex::state_data]':
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:124:103:   instantiated from
 here
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:52:99: warning: dereferencin
g type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:52:99: warning: dereferencin
g type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:53:52: warning: dereferencin
g type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
..\boost_1_53_0/boost/thread/win32/shared_mutex.hpp:53:52: warning: dereferencin
g type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
In file included from ..\boost_1_53_0/boost/interprocess/detail/windows_intermod
ule_singleton.hpp:26:0,
                 from ..\boost_1_53_0/boost/interprocess/detail/tmp_dir_helpers.
hpp:22,
                 from ..\boost_1_53_0/boost/interprocess/shared_memory_object.hp
p:22,
                 from ..\boost_1_53_0/boost/interprocess/ipc/message_queue.hpp:1
7,
                 from src\qt\bitcoin.cpp:23:
..\boost_1_53_0/boost/interprocess/detail/intermodule_singleton_common.hpp: In s
tatic member function 'static ThreadSafeGlobalMap& boost::interprocess::ipcdetai
l::intermodule_singleton_common<ThreadSafeGlobalMap>::get_map() [with ThreadSafe
GlobalMap = boost::interprocess::ipcdetail::intermodule_singleton_helpers::windo
ws_semaphore_based_map]':
..\boost_1_53_0/boost/interprocess/detail/intermodule_singleton_common.hpp:125:4
9:   instantiated from 'static void boost::interprocess::ipcdetail::intermodule_
singleton_common<ThreadSafeGlobalMap>::initialize_singleton_logic(void*&, volati
le uint32_t&, void* (*)(ThreadSafeGlobalMap&), bool) [with ThreadSafeGlobalMap =
 boost::interprocess::ipcdetail::intermodule_singleton_helpers::windows_semaphor
e_based_map, uint32_t = unsigned int, boost::interprocess::ipcdetail::intermodul
e_singleton_common<ThreadSafeGlobalMap>::singleton_constructor_t = void*(boost::
interprocess::ipcdetail::intermodule_singleton_helpers::windows_semaphore_based_
map&)]'
..\boost_1_53_0/boost/interprocess/detail/intermodule_singleton_common.hpp:333:7
:   instantiated from 'static void boost::interprocess::ipcdetail::intermodule_s
ingleton_impl<C, LazyInit, Phoenix, ThreadSafeGlobalMap>::atentry_work() [with C
 = boost::interprocess::ipcdetail::windows_bootstamp, bool LazyInit = true, bool
 Phoenix = true, ThreadSafeGlobalMap = boost::interprocess::ipcdetail::intermodu
le_singleton_helpers::windows_semaphore_based_map]'
..\boost_1_53_0/boost/interprocess/detail/intermodule_singleton_common.hpp:323:1
3:   instantiated from 'static C& boost::interprocess::ipcdetail::intermodule_si
ngleton_impl<C, LazyInit, Phoenix, ThreadSafeGlobalMap>::get() [with C = boost::
interprocess::ipcdetail::windows_bootstamp, bool LazyInit = true, bool Phoenix =
 true, ThreadSafeGlobalMap = boost::interprocess::ipcdetail::intermodule_singlet
on_helpers::windows_semaphore_based_map]'
..\boost_1_53_0/boost/interprocess/detail/tmp_dir_helpers.hpp:45:97:   instantia
ted from here
..\boost_1_53_0/boost/interprocess/detail/intermodule_singleton_common.hpp:203:9
3: warning: dereferencing type-punned pointer will break strict-aliasing rules [
-Wstrict-aliasing]
..\boost_1_53_0/boost/system/error_code.hpp: At global scope:
..\boost_1_53_0/boost/system/error_code.hpp:214:36: warning: 'boost::system::pos
ix_category' defined but not used [-Wunused-variable]
..\boost_1_53_0/boost/system/error_code.hpp:215:36: warning: 'boost::system::err
no_ecat' defined but not used [-Wunused-variable]
..\boost_1_53_0/boost/system/error_code.hpp:216:36: warning: 'boost::system::nat
ive_ecat' defined but not used [-Wunused-variable]
mingw32-make: *** [build/bitcoin.o] Error 1

Is the error that I get. I've tried everything I can think of, but this is just getting horrificly annoying.


Thanks for any help you may have,


nuggetbram

[Specifications:]

GammaCoin

Specifications:

2.5 Minute block times - It works for Litecoin and helps later on

Block reward of 100 Coins - Not ridiculous like most of today's coins

Difficulty retarget every block

Max coin supply: ~1,700,000 - This is where the interesting bit comes in. This is one month's worth of coins

Algo is Scrypt

I hate to be that dev, but the windows wallet is broken, and the release will be postponed until further notice

Unless Someone offers to help, I probably wont release the coin. The windows wallet is painful, and there isn't really a huge amount of support for the coin...[/size]

This coin has no long term plans such as many of those around today, they will inevitably be (or already have been) completely abandoned. We've never really seen what happens when a coin winds up normally, so this is essentially a test of that. One month is long enough to push through the initial stage where miners dump everything they make and move on. Will that happen normally, or will the coin live a bit longer? That is the question!

IPO

I generally disagree with the standard form of IPOs, but having almost completed the coin I have realized it does take a bit more money than would be expected. If anyone wants to donate, go ahead! What I would prefer though if people were to contact exchanges or pools they have dealt with previously etc, therefore giving the coin a good start, which is better for you! If anyone wants to help, you could even submit some hashing power on behalf of the coin - tell me if you're interested!

~0.25% Premine, used to pay for a couple of VPSs, one for testing and one as a node to start with.

Official Pool is Sumpool, awaiting upload...

BTC DONATION ADDRESS:154AcNQ2CSJw5du3Xd9cAXWdu6f5AA3jaB

At this stage the release date will be 02/04/2014 Wednesday 2nd of April, 8:00AM GMT. (7pm AEST if you're an Aussie like me )

Thanks for looking at GammaCoin!

I've been making a litecoin clone for a bit of fun, but I'm having issues connecting the wallets. I have 2 machines running ubuntu through vmware. When I run it with the -connect=xxx.xxx.xxx.xxx line, no errors occur but no connections appear in the getinfo section. I grabbed the ips from the network info pane of both machines.

What am I doing wrong?

I have 4 gpus that I want to run in my rig, but my old psu simply couldnt keep up with all of them. I have 2 6870s, 1 5870 and a R7 260x. I'm looking at this PSU at the moment, http://www.pccasegear.com/index.php?main_page=product_info&products_id=25154

Will this suit my rig? I don't have a huge budget and it seems pretty powerful for that (and it's modular etc)

Also, does anyone have any good settings with the 260x? I get 225 kh/s from mine but I was wandering if anyone else has gotten it higher.

Thanks,

My old PSU I've been using for my mining rig recently died (most likely of old age) and I'm looking for a new one. So far, I have a 6870, a 5850 and a 6930 (all scavenged from ebay).

What would be a good PSU to run them with?

The only other things I have running are the CPU, which is an old Althlon, hard drive and 2 chassis fans.

I don't have to pay for electricity so I'm not neseccarily looking for anything amazingly efficient. I don't have a large budget either, I'm really just looking for something that will run them cards and isn't likely to fail after 10 minutes.

I live in Australia as well, so not everything is available here.

Thanks,

As the title suggests, I'm looking to build a simple rig for the fun of it, and have space for 2 cads on an older pc. I'm currently looking at some of the older 5 and 6 series cards on ebay, which seem pretty cheap for 300-400kh/s each. Does anyone have any experience with these? Are they worth the ~$80 each?

The second question is to do with power. I have 3 spare ( I think 450W) PSU's, and I doubt one will be capable of running two cards. Would I be able to plug one PSU into the motherboard, and have the other supplying the pcie power connector things, or would I need one of those 2 PSU - 1 adapters. If so, which would I plug into the gpu power sockets?

EDIT: I have three 400W PSUs

Thanks,

Every time I start armory, after ~1 hour of scanning and synchronizing, the program crashes before I'm even able to move my coins out.

Is this a common problem?

I am running windows 8 64-bit on a macbook something or other. (Work computer, I'd never choose a mac


Thanks,

I'm looking for the fastest vps I can use and pay upfront with BTC, for mining primecoins and other CPU only coins. Does anyone have any experiences with any particularly good services? My budget for now is ~$30 per month for testing.



Thanks,

Damn. Is there any way around that issue? I really liked the idea

My idea so far is to have a sha-256 coin that has solomining disabled, and the source code released to only one pool. That pool then has a hash limit of 350Mh/s or so, kicking anything higher, so powerful asics can't be used, only USB eruptors and gpus.

I can probably make this coin myself, but if any more experienced coin makers want to they are free to help.

Donations would be extra helpful! BTC: 1A8NHoNJjTgX5hYn3HPnTmBx9kcWySdYNn

(EDIT- I just realized I will be unavailable for a day or two, but then should be here for any questions)


Thanks!

A friend has offered me 10 330Mh/s block eruptors for $30, would that be profitable at all? I don't really have to pay for electricity, so I guess that helps a bit