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News: Latest Bitcoin Core release: 0.21.0 [Torrent]
 
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1  Bitcoin / Bitcoin Discussion / Re: Science Fair Project to trap Bitcoin private keys using Kangaroos! on: October 09, 2019, 04:16:22 AM
Telariust, there is nothing in Source Code, only README.md
2  Bitcoin / Bitcoin Technical Support / Re: Bitcoin core shutdown fails / hungs on: September 16, 2019, 08:29:16 AM
UPD: Resolved!

Not know in details but problem with my local (ISP) DNS server. When I start bitcoind with local DNS - it fails to shutdown all time.
When I change DNS to 8.8.8.8 - and start bitcoind - shutdown works ideally!

Maybe my ISP blocks something etc. I just don't have time now to explore this question. Maybe later. For now I just changed to use 8.8.8.8 in my local net and problem gone!
3  Bitcoin / Bitcoin Technical Support / Bitcoin core shutdown fails / hungs on: August 31, 2019, 04:51:43 PM
Hi everyone!

I have problem with shutting down bitcoin core on linux platform for years with different bitcoin core versions Sad
bitcoind and bitcoin-qt hungs after shutdown it. In bitcon.conf only one line - server=1

Note that is with empty database (like 1st bitcoind run!)

Here is debug.log with debug=0:
...

2019-08-31T16:29:46Z Shutdown: In progress...
2019-08-31T16:29:46Z net thread exit
2019-08-31T16:29:47Z msghand thread exit

Here is debug.log with debug=1:
...
019-08-31T16:46:40Z Shutdown: In progress...
2019-08-31T16:46:40Z Stopping HTTP RPC server
2019-08-31T16:46:40Z Unregistering HTTP handler for / (exactmatch 1)
2019-08-31T16:46:40Z Unregistering HTTP handler for /wallet/ (exactmatch 0)
2019-08-31T16:46:40Z Stopping RPC
2019-08-31T16:46:40Z RPC stopped.
2019-08-31T16:46:40Z Stopping HTTP server
2019-08-31T16:46:40Z Waiting for HTTP worker threads to exit
2019-08-31T16:46:40Z libevent: epoll_dispatch: epoll_wait reports 1
2019-08-31T16:46:40Z libevent: event_active: 0x559cf948bda0 (fd 24), res 2, callback 0x7fc92f469610
2019-08-31T16:46:40Z libevent: event_process_active: event: 0x559cf948bda0, EV_READ   call 0x7fc92f469610
2019-08-31T16:46:40Z libevent: event_base_loop: asked to terminate loop.
2019-08-31T16:46:40Z libevent: event_del: 0x7fc914000d00 (fd -1), callback 0x559cf681f6d0
2019-08-31T16:46:40Z torcontrol thread exit
2019-08-31T16:46:40Z addcon thread exit
2019-08-31T16:46:40Z opencon thread exit
2019-08-31T16:46:40Z libevent: event_del: 0x559cf8d236c8 (fd 9), callback 0x7fc92f476500
2019-08-31T16:46:40Z libevent: Epoll DEL(1) on fd 9 okay. Old events were 2; read change was 2 (del); write change was 0 (none); close change was 0 (none)
2019-08-31T16:46:40Z libevent: event_del: 0x559cf8d230a8 (fd 10), callback 0x7fc92f476500
2019-08-31T16:46:40Z libevent: Epoll DEL(1) on fd 10 okay. Old events were 2; read change was 2 (del); write change was 0 (none); close change was 0 (none)
2019-08-31T16:46:40Z Waiting for HTTP event thread to exit
2019-08-31T16:46:40Z libevent: epoll_dispatch: epoll_wait reports 1
2019-08-31T16:46:40Z libevent: event_active: 0x559cf8d228e0 (fd Cool, res 2, callback 0x7fc92f469610
2019-08-31T16:46:40Z libevent: event_process_active: event: 0x559cf8d228e0, EV_READ   call 0x7fc92f469610
2019-08-31T16:46:40Z libevent: event_base_loop: no events registered.
2019-08-31T16:46:40Z Exited http event loop
2019-08-31T16:46:40Z libevent: event_del: 0x559cf8d228e0 (fd Cool, callback 0x7fc92f469610
2019-08-31T16:46:40Z libevent: Epoll DEL(1) on fd 8 okay. Old events were 2; read change was 2 (del); write change was 0 (none); close change was 0 (none)
2019-08-31T16:46:40Z libevent: event_base_free_: 0 events freed
2019-08-31T16:46:40Z Stopped HTTP server
2019-08-31T16:46:40Z BerkeleyEnvironment::Flush: [/bitcoin/bitcoin/] Flush(false)
2019-08-31T16:46:40Z BerkeleyEnvironment::Flush: Flushing wallet.dat (refcount = 0)...
2019-08-31T16:46:40Z BerkeleyEnvironment::Flush: wallet.dat checkpoint
2019-08-31T16:46:40Z BerkeleyEnvironment::Flush: wallet.dat detach
2019-08-31T16:46:40Z net thread exit
2019-08-31T16:46:40Z BerkeleyEnvironment::Flush: wallet.dat closed
2019-08-31T16:46:40Z BerkeleyEnvironment::Flush: Flush(false) took              72ms
2019-08-31T16:46:40Z msghand thread exit

The same configuration with bitcoin testnet shutdowns fine.

Maybe someone can help me with finding where problem is ? I'm very tired with it. Thanks in advance.
4  Bitcoin / Development & Technical Discussion / Re: Bitcoin core hd wallet from mnemonic on: August 31, 2019, 09:01:15 AM
UPD: Resolved. It needs to use  -v 239 for testnet in bx ec-to-wif command
5  Bitcoin / Development & Technical Discussion / Re: Bitcoin core hd wallet from mnemonic on: August 31, 2019, 08:45:37 AM
Hello all!

I'm trying understand HD wallets in bitcoin core implementation and got stuck. Here it is:

$ bx seed | bx mnemonic-new -l en
reward awake later spot grass list peanut clog hurry guess question father leg dress only reunion horn napkin

$ echo "reward awake later spot grass list peanut clog hurry guess question father leg dress only reunion horn napkin" | bx mnemonic-to-seed | bx hd-new | bx hd-to-ec | bx ec-to-wif
L1G3dzjDmkPNkrYLs2L9pTbF9BZ4XThqkXVtDxcrP887uPYRjriG

That WIF key L1G3dzjDmkPNkrYLs2L9pTbF9BZ4XThqkXVtDxcrP887uPYRjriG should be ok for sethdseed? Right?

So next:
$ bitcoin-cli createwallet test
{
  "name": "test",
  "warning": ""
}


$ bitcoin-cli -rpcwallet=test sethdseed true L1G3dzjDmkPNkrYLs2L9pTbF9BZ4XThqkXVtDxcrP887uPYRjriG
error code: -5
error message:
Invalid private key


What's wrong?

Thanks in advance.
6  Bitcoin / Project Development / Re: Large Bitcoin Collider Thread 2.0 on: November 18, 2017, 07:06:27 PM
Im trying to run LBC on my new 7820X:

$ ./LBC -x
Will use 8 CPUs.
Testing mode. Using page 0, turning off looping.
Benchmark info not found - benchmarking... 'kardashev-skylake-avx512' not found/executable.

LBC just downloaded .blf file but not kardashev-skylake-avx512.

LBC version 1.195

Any suggestions what's wrong ?
7  Bitcoin / Project Development / Re: Large Bitcoin Collider Thread 2.0 on: November 15, 2017, 09:44:12 AM
Guys, can you advice what is the best speed/price ratio from Core i5-i7 CPU family for launch LBC soft? Im going to participate and luckly it's time to upgrade my HW. Thanks.

Depends on your budget.

The https://ark.intel.com/products/123767/Intel-Core-i7-7820X-X-series-Processor-11M-Cache-up-to-4_30-GHz is a nice CPU with lots of potential.
Seems a 1950X Threadripper is even better.

Don't go for Vega{56,64} yet - lot's of trouble - AMD guys seem to need more time to provide sane drivers.

If I was to choose some MAX configuration, still in reasonable reach for the well funded individual, I'd probably go for a

1950X system with two 1080Ti GPUs - should give me 90-100 Mkeys/s now and XXXXX in the future.

If you want better price/performance ratio now, at the expense of less future potential, replace the 1080Ti with 1050Ti.

Rico thanks for answer.

Now I'm slecting MB and CPU only. Not GPUs. But I limited myself only with 1151 socket as 2066 CPUs/MBs overload my budget and also I don't like AMD. The second step will be GPUs but it's a little later.
What you say about https://ark.intel.com/ru/products/126686/Intel-Core-i7-8700-Processor-12M-Cache-up-to-4_60-GHz  with MB https://www.msi.com/Motherboard/B250-KRAIT-GAMING.html ? I'm not very familiar with modern HW so maybe there are better options. Any more advices ? Thanks.
8  Bitcoin / Project Development / Re: Large Bitcoin Collider Thread 2.0 on: November 15, 2017, 07:48:46 AM
Guys, can you advice what is the best speed/price ratio from Core i5-i7 CPU family for launch LBC soft? Im going to participate and luckly it's time to upgrade my HW. Thanks.
9  Local / Альтернативные криптовалюты / Re: [KRB] Карбованець - Карбованец on: July 11, 2017, 07:28:07 AM
Подскажите, можно ли одному кошельку сделать больше одного счета (публичного адреса)? Если да, то как? Спасибо.
меню Файл > Создать кошелек
переключаться - меню Файл > Последние кошельки
Это я понимаю, но вопрос не совсем об этом. Чтобы у одного кошелька (файла) было несколько адресов, на которые (и с которых) можно отправлять деньги, и чтобы они попадали в один кошелек.
10  Local / Альтернативные криптовалюты / Re: [KRB] Карбованець - Карбованец on: July 11, 2017, 05:39:03 AM
Подскажите, можно ли одному кошельку сделать больше одного счета (публичного адреса)? Если да, то как? Спасибо.
11  Local / Альтернативные криптовалюты / Re: [XPM] [ANN] Primecoin on: February 19, 2014, 02:59:29 PM
Можно ли узнать, какие непосредственно последовательности найдены в моих шарах? Сколько цифр в первом простом числе ?
12  Local / Альтернативные криптовалюты / Re: [XPM] [ANN] Primecoin on: February 19, 2014, 01:21:23 PM
Вторая цифра это Best share на данный момент. Ток тут наверное другое слово применимо, Best Chains...
Как понять Best share или Best Chains ? Похоже, что это минимальная длина цепочки, которая засчитывается и оплачивается пулом. Но отсюда вопрос, почему при текущей сложности более 10 засчитываются 7,8,9 цепочки (а блок - это цепочка длиной не менее 10 при текущей сложности) ?  Почему не от 1, 2, 3, ... или же только 10 ?

Чем больше вникаю, тем больше вопросов Sad
13  Local / Альтернативные криптовалюты / Re: [XPM] [ANN] Primecoin on: February 18, 2014, 09:45:46 AM
Добрый день!

Хочу задать вопрос по внутреннему устройству XPM. Что является признаком нахождения блока ? Нахождение цепочки простых чисел определенной длины, а именно - длины "округляя сложность в большую сторону минус 1"? Если текущая сложность 10.42647350, то как только находится цепочка чисел 10 или более, то блок считается найденным. Верно я понимаю ? Пожалуйста, подтвердите или поясните где я ошибаюсь.

И второй вопрос. jhPrimeminer дает такую информацию о новом блоке. Diff: 10.42648113 / 7.00000000 . Как я понимаю, первое число, это текущая сложность, а что означает 7.00000000 ?

Дальше еще будут вопросы. Спасибо.

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