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1  Local / Türkçe (Turkish) / Re: Bitcoin kodunu anlamak: picocoin on: September 19, 2013, 12:58:51 PM
Evet arkadaslar, picocoin maceramiz yavas yavas ilerlemeye devam ediyor: Buguen
Code:
bloom filter
kodunu C'den C++'a port ettim; gerci bir cok sey copy & paste .. ama yinede C ile C++ ayni dil olmadigindan, port olayi kodu anlami sagliyor: Bloom filter'leri bir bilgisayarci acisindan baya ilginc bir yapi: Bir elemanin bir kuemeye ait olup olmadigini hizli bir sekilde test (probabilistic) edebiliyor; daha cok bilgi icin https://en.wikipedia.org/wiki/Bloom_filter tavsiye ederim.

Header dosyasi:
Code:
struct bloom {
GString *v_data; unsigned int n_hash_funcs;
};

namespace Bloom { // 20k items with FP rate < 0.1% or 10k items and < 0.0001%

    enum {
        MAX_FILTER_SIZE = 36000, // bytes
        MAX_HASH_FUNCS = 50,
    };

    bool init(struct bloom *bf, unsigned int n_elements, double fp_rate);
    void free(struct bloom *bf);

    void insert(struct bloom *bf, const void *data, size_t length);
    bool contains(struct bloom *bf, const void *data, size_t length);
}

Altyapi yavas yavas ortaya cikmaya basladi, ama daha cok is var: Bir sonra ki adim herhal
Code:
key
ve
Code:
keyset
kodunu incelemek olacak.
2  Local / Türkçe (Turkish) / Re: Bitcoin kodunu anlamak: picocoin on: September 11, 2013, 06:04:12 AM
Yavas, yavas .. baska projelerle ilgilendim son 2 aydir: https://github.com/hsk81/ccoin-xx adresinden takip edebilirsin.
3  Local / Alternatif Kripto-Paralar / Re: LTC - iyi bir maden sitesi ? on: August 01, 2013, 09:56:21 AM
Slm arkadaslar,

Daha once tavsiye ettigim hypernova.pw oelmek uezere (pool admin hatasi); tavsiye etmiyorum artik taa ki admin hatasini duzeltene dek.
4  Local / Türkçe (Turkish) / Re: Bitcoin kodunu anlamak: picocoin on: July 08, 2013, 10:44:01 AM
Evet arkadaslar base58 header boeluemundeki kodu C den C++ gecirdim .. C kodu aslinda temiz, ama uzun suere Python kullandigimdan, bazen kendimi tas devrine savrulmus gibi hissediyorum. https://github.com/hsk81/ccoin-xx sitesinden ilerlememi takip edebilirsiniz. Anlasilan bitcoin kendine has
Code:
Base58
kodlamasi kullaniyor: Daha standard olan
Code:
Base64
kodlamasina goere daha "web friendly" (yani herhangi bir "string"i b'58 ile cevirdiginizde garip garip karakterler cikmiyor):

Code:
namespace Base58 {    
    GString* encode(const void *data, size_t data_length);
    GString* encode_check(unsigned char address_type, bool has_address_type,
            const void* data, size_t data_length);

    GString* decode(const char *string_in);
    GString* decode_check(unsigned char *address_type, const char *string_in);
}

Daha bu ilk adim: Anlayabildigim kadari ile "-check" ile biten fonktionlar encoding yaparken isin icine birde hash katip, cevirimin dogru olup olmadigini test ediyor. Bir sonraki adim
Code:
HexCode
ve
Code:
Util
icin test kodunu anlayip C++ cevirmek. Daha cok is var ..  Grin
5  Local / Servisler / Re: MT Gox Mantıgı? on: July 08, 2013, 10:28:35 AM
Mtgox scam no use

mtgox.com scam degildir
6  Alternate cryptocurrencies / Pools (Altcoins) / Re: [ANN] [LTC] [PPS] [OTP 2FA] [Stratum only] LTCMine PPS mining pool (3.3%) on: July 05, 2013, 01:41:53 PM
Stats snapshot for last two days.

Blocks mined: 19
Blocks list: ...
Winning shares list: ..

Shares list (RAW data in gzipped TSV format, without IPs): http://ltcmine.ru/stats/03072013/shares_noip.tsv.gz
Round shares list (data in gzipped TSV format,): http://ltcmine.ru/stats/03072013/shares_by_rounds.tsv.gz
User work and rewards (data in TSV format): http://ltcmine.ru/stats/03072013/users_work.tsv

Total diff-1 approximated work (D1A): 794666626
PPS rate: 0.00000087 LTC
Total PPS work: 691.36 LTC
Mined funds: 950 LTC

@Balthazar: Are you making sure that those miners who have withdrawn too much (and stole the LTCs from the pool) that day, are not being paid here? I'd asked you this before, but I could not find your answer yet. The above list includes some of the 68 users who withdrew too much; so is it possible that you double check please? Thank you. Smiley
7  Local / Türkçe (Turkish) / Re: Başka kazanç yolları? on: July 05, 2013, 07:55:10 AM
Bence BTC/LTC olayinda kazanc yollari sunlar:

 * madencilik (zamanla daha az karli); ve
 * servisler (cok karli):

  - mesela TRY/BTC borsasi kurmak;

  - yada bir "escrow" servisi: yani ben tanimadigim ve guvenmedigim biriyle bir alis veriste bulunacagim. Bu guevenilir arabulucu sayesinde iki bir birini tanimayan ve birbirine guevenmeye kisiler alis veris edebiliyorlar;

  - arabulucu baska bir sirket: ben adamlara BTC veriyorum ve onlar TRY ile istedigim ueruenue alip bana yolluyorlar;

  - bitpay.com'um TRY versiyonu;

  - herhangi bir banka ile anlasip bir BTC kredi karti;

  - BTCnin bir "option" yada "future" piyasasi yok .. bude BTC ile uzun vadeli finansal planlamayi kisitliyor. Duenyanin en bueyuek pazari mesela USD future'lari; Mekanizma: bir arabulucu sirket/banka bana mese 3 ay sonra BTCyi X fiyatinda alma/satma garantisi veriyor .. bu garanti icin ben bankaya az bir komisyon oedueyorum. Fayda: Bu garanti sayesinde elimdeki BTCnin 3 ay sonra an az/cok ne kadar TRY elde edebilegimi bilebiliyorum. Banka batmamak icin "delta hedging" uyguluyor.

  - BTC ile borc alip/satmasi imkansiz; bunu yapan ilk banka cok kar yapacakdir;

  - Ayni sekilde BTC herhangi bir faiz vermiyor .. eger bir banka BTC hesabi acma imkani verip az bir faiz verirse, yine cok kar yapacakdir; istemeyen BTCyi kendi Laptopunda (yani yasitigin altinda tutar), isteyenede ama banka hesap acarak faiz imkani verir;

  - BTCnin kendisinde faiz diye bir olay yok: eger gercek islami bankacilik uygulamak isteyen arkadaslar varsa, piyasadaki tuem "islami" diye gecinen finans ueruenlerinden daha temiz BTC bazinda islami sigorta/bono/sukuk gibi finans ueruenleri cikarip, ciddi bir reklam kampanyasi ile bu konuda hassas olan vatandaslari muesteri olarak kazanabilir;

  - Amerikada birisi BTC bankamatigi cikarmis: USD veriyorsun, makina sana BTC cikariyor .. bu TRY icin uygulanabilinir;

  - BTC hakkinda Turkiyede gercekden tanitimini yapan bir dergi/gazete yok, boyle bir seyi internet ortaminda kurup reklamlardan kazanilabilinir;

  - BTC 100% anonim degildir .. "data mining" ile yamuk isler yapanlar takip edilebilinir; boyle bir yazilim yazip, devlete ASIRI buyuk paralar ile satilabilinir; ayni zamanda BTCden anonimite konusunda daha guclu coinlar gelistirebilinir (mesela "zerocoin") ve bu daha gucle coinlara karsi daha sofistike yazilimlar yapilabilinir (ve tabi guevenlik guclerine dahada fazla karla TEKRAR satilabilinir);

  - ..
8  Local / Madencilik / Re: Bitcoin Mining (Madenciliği) on: July 05, 2013, 07:31:59 AM
Arkadaslar http://www.coinwarz.com/cryptocurrency sitesinde bir cok coin'u ile ilgili madenciligi karsilastirabiliyorsunuz .. kapasitenizi yaziyorsunus, elektrik fiyatini ve size aninda hangi coin en karli hemen listeyi cikariyor.
9  Local / Alternatif Kripto-Paralar / Re: Litecoinu Deneyen varmi? on: July 04, 2013, 01:16:35 PM
hypernova.pw bence iyi
10  Local / Servisler / Re: Bitcoin alım-satımı ve borsalar (exchangeler) [mtgox,bitstamp,btc-e,vd.] on: July 04, 2013, 01:12:28 PM
ltcmine.ru aslinda cok iyi ama iki/uc guen once adam bir hata yapti, 11 LTCem herhal buhar oldu .. hypernova.pw'yi kullaniyorum artik.
11  Local / Türkçe (Turkish) / Re: Bitcoin kodunu anlamak: picocoin on: July 04, 2013, 12:56:56 PM
Linkde ki bilgiler cok degerli; tsk!  Cheesy
12  Local / Türkçe (Turkish) / Bitcoin kodunu anlamak: picocoin on: July 04, 2013, 05:52:13 AM
Merhaba arkadaslar,

iki senedir BTC/LTC ile ugrasiyorum ve su aralar PPCyi de kurcalamaya basladim; her ne kadar bitcoinun alt yapisini anlamis olsamda asil kodunu dunyada gercekten yemis bitirmis insan sayisinin fazla olmadigini tahmin ediyorum. Bu sebeple C kodunu okuyup analiz etmeye basladim; yanlis ugrastigim kod bitcoinun kendi has kodu degil, ama yeni yazilmis bir versiyonu: https://github.com/jgarzik/picocoin. Amacim picocoin C kodunu C++ yada Pythona cevirip, bu BTC olayini temelden anlayip, hatta belkide kitabini yazmak. Daha yeni basladim, ve kod bazindaki bazi baglari inceliyorum su an.

C kodunun headearlar arasindaki baglar:



Eger buna benzer bir ise girismis arkadasimiz varsa, bilgi alis verisine acigim; selamlar.
13  Local / Konu Dışı / Re: gezi parkı gösterilerinde bitcoin pankartı açmak on: July 04, 2013, 05:33:43 AM
Hayir arkadaslar, ben her ne kadar bitcoin/litecoin a destek veriyorsamda, bu pankart fikri devletin antipatisini cekip ardindanda yasaklar gelecekdir; ve eger bitcoina karsi yaptirimlar baslarsa turkiyede ki BTC/LTC yapilasmasina zarar verir .. daha kimsenin ne olup bittigini anladigi yok, birak isler yavas yavas ilerleyerek guec kazansin.

Quote
Hizli yuruyen cabuk yorulur.
14  Local / Alternatif Kripto-Paralar / Re: LTC - iyi bir maden sitesi ? on: July 04, 2013, 05:23:26 AM
hypernova.pw sitesini tavsiye ederim
15  Alternate cryptocurrencies / Pools (Altcoins) / Re: [ANN] [LTC] [PPS] [OTP 2FA] [Stratum only] LTCMine PPS mining pool (3.3%) on: July 04, 2013, 05:19:44 AM
Stats snapshot for last two days.

Blocks mined: 19

Blocks list:

http://explorer.litecoin.net/block/fc3bc6706bd7812a6e267dddb75cd66b836edd11c6014372cc550333b1a8dbd6
http://explorer.litecoin.net/block/e1f772a24a56e36642914d678a0f85fd136566994c8e297832cd5a81f274e907
http://explorer.litecoin.net/block/c535ce466ef8691fb0918a269744ba67b8c9069de1d8035821940454e74816c1
http://explorer.litecoin.net/block/f09b7bae6c546ce14f0a5d586e8dee700a6ca7686f168a8cd62db1404fbefb1c
http://explorer.litecoin.net/block/a3d9260cda5f0cd3f9cb2aded6d03dfbb34a3ef072bb8c36b6929f60be953fad
http://explorer.litecoin.net/block/18e165c2099e29a1d0a4941cd0e74d2e5a11d35b413c3f4e4caee7b1b27935b6
http://explorer.litecoin.net/block/2a124b78db665ae6682279ae71d23b5d416fefbd940a1eff6de7f6ef3f6e235a
http://explorer.litecoin.net/block/0ce0b7e30d2e1caf6c52d1f33e83e4bc790a0038056e7e29786b5bebb04e7d38
http://explorer.litecoin.net/block/debe05a4fdfd9a7549e6c1982982cfbf7c7049a6785953c48d71979f15fb088b
http://explorer.litecoin.net/block/6d85a55b40536305511d8eb2dd790af5e18b483112e98214e00453e6751d50bc
http://explorer.litecoin.net/block/7bcdc2368ed2a44d6236bf482c4e17d4468a24f43ad086381af5eeff9d113827
http://explorer.litecoin.net/block/e909dcfaee7688f9847f208334705ad0157894227fca45bba552d2a6b0593627
http://explorer.litecoin.net/block/1d3ee47e5e836534a1be77c0496c389e7217d61f324473713051c81eb5577ec8
http://explorer.litecoin.net/block/a1a04ac260ac7050383ff36b41a512af55c7039337198ec10331ce1b70ba158e
http://explorer.litecoin.net/block/d60bc48d323901b88f19298515022aaaf16260813e49b7d9a9ae93f0b30eaf0e
http://explorer.litecoin.net/block/fc20690a006e4fc61c3d47c3dc3b0112a590a4ad14ae621f12ba3cce3b4fddd9
http://explorer.litecoin.net/block/edc220c873d6f668d42a78f9f1a5c9fe1b49e4399fa431b0a83f1f34e2f4c0fa
http://explorer.litecoin.net/block/bff0f745644bab4adffd5bec234dbe8c46f77b2b6921872ee686ab3acdaa6264
http://explorer.litecoin.net/block/f58ab428c26dc36cdf4792f9f3e68a0661d63d61f0f72ed4edf35b0d6ca8095a

Winning shares list: ..

Shares list (RAW data in gzipped TSV format, without IPs): http://ltcmine.ru/stats/03072013/shares_noip.tsv.gz
Round shares list (data in gzipped TSV format,): http://ltcmine.ru/stats/03072013/shares_by_rounds.tsv.gz
User work and rewards (data in TSV format): http://ltcmine.ru/stats/03072013/users_work.tsv

Total diff-1 approximated work (D1A): 794666626
PPS rate: 0.00000087 LTC
Total PPS work: 691.36 LTC
Mined funds: 950 LTC

Sendmany array: http://ltcmine.ru/stats/03072013/sendmany.json
Transactions list: http://ltcmine.ru/stats/03072013/transactions.json

If you can't understand what's this, read this post: https://bitcointalk.org/index.php?topic=92522.msg2628221#msg2628221

@Balthazar: Are you making sure that those miners who have withdrawn too much (and stole the LTCs from the pool) that day, are not being paid here?
16  Other / Beginners & Help / Re: 2x ASUS 7950 low voltage problem on: May 03, 2013, 08:32:40 PM
@hashrateproducts: What is your ambient/room temperature?
17  Other / Beginners & Help / Re: 2x ASUS 7950 low voltage problem on: May 03, 2013, 02:17:43 PM
So as a conclusion: It is possible to run 2x ASUS 7950 without low voltage problems by upgrading to the newest drivers (for Ubuntu). I solved the overheating problem by underclocking the hotter GPU:

GPU 0: 75.0 C

Code:
GPU 0: 442.0 / 434.6 Kh/s | A:103  R:0  HW:0  U:3.04/m  I:20
75.0 C  F: 87% (3582 RPM)  E: 725 MHz  M: 850 Mhz  V: 1.090V  A: 99% P: 20%
Last initialised: [2013-05-03 16:02:34]
Intensity: 20
Thread 0: 443.0 Kh/s Enabled ALIVE

GPU 1: 72.0 C

Code:
GPU 1: 599.7 / 576.8 Kh/s | A:89  R:12  HW:0  U:2.62/m  I:20
72.0 C  F: 36% (2092 RPM)  E: 1100 MHz  M: 1375 Mhz  V: 1.090V  A: 99% P: 20%
Last initialised: [2013-05-03 16:02:34]
Intensity: 20
Thread 1: 599.4 Kh/s Enabled ALIVE

The overall performance I get is slightly more than 1Mh/s:

Code:
cgminer version 3.1.0 - Started: [2013-05-03 16:02:29]
--------------------------------------------------------------------------------
 (5s):888.3K (avg):1.009Mh/s | A:205  R:12  HW:0  U:5.8/m  WU:886.2/m
 ST: 2  SS: 0  NB: 11  LW: 191  GF: 0  RF: 0
 Connected to ltcmine.ru diff 128 with stratum as user hsk81_0
 Block: d5e66ac92a1de975...  Diff:31.6M  Started: [16:35:18]  Best share: 127K
--------------------------------------------------------------------------------
 [P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
 GPU 0:  75.0C 3584RPM | 396.6K/434.2Kh/s | A:107 R: 0 HW:0 U:3.02/m I:20
 GPU 1:  72.0C 1987RPM | 499.6K/577.1Kh/s | A: 99 R:12 HW:0 U:2.79/m I:20
--------------------------------------------------------------------------------

I use the following command line:

Code:
#!/bin/bash

export DISPLAY=:0 ;
export GPU_MAX_ALLOC_PERCENT=100 ;
export GPU_USE_SYNC_OBJECTS=1 ;

LTCPOOL=${1-"http://my-pool.tld:port"}
LTCUSER=${2-"my-username"}
LTCPASS=${3-"my-password"}

INTENSITY=20 ; ## -I $INTENSITY
THREAD_CONCURRENCY=16384 ; ## --thread-concurrency $THREAD_CONCURRENCY
GPU_ENGINE=725,1100 ; ## --gpu-engine $GPU_ENGINE
GPU_MEMCLOCK=850,1375 ; ## --gpu-memclock $GPU_MEMCLOCK
GPU_POWERTUNE=20 ; ## --gpu-powertune $GPU_POWERTUNE

cd /opt/cgminer && rm -f *.bin && ./cgminer --scrypt --auto-fan \
    --url $LTCPOOL --userpass $LTCUSER:$LTCPASS \
    --thread-concurrency $THREAD_CONCURRENCY -I $INTENSITY \
    --gpu-engine $GPU_ENGINE --gpu-memclock $GPU_MEMCLOCK \
    --gpu-powertune $GPU_POWERTUNE

If somebody has better performance with both ASUS 7950 running at lower or equal 75 C degrees, then please share it. Thanks.  Cheesy
18  Other / Beginners & Help / Re: 2x ASUS 7950 low voltage problem on: May 02, 2013, 02:40:39 PM
@z3r0: Hi, thanks for the tip; do you mean this would lower my GPU temperature? Where can I get such dummy plugs? I've seen some people also attach a resistance to a dummy but don't know what that actually does ..
19  Other / Beginners & Help / Re: 2x ASUS 7950 low voltage problem on: May 02, 2013, 11:10:55 AM
Heureka! Grin So the issue was software drivers: following the instructions at http://www.reddit.com/r/litecoinmining/comments/1c4n7i/guide_getting_started_with_n_x_radeon_7950_on/ and updating my AMD drivers (Step #8) did the trick .. but now I've another problem: Overheating  Shocked

Hot GPU:

Code:
GPU 0: 593.7 / 466.6 Kh/s | A:14  R:0  HW:0  U:2.61/m  I:20
87.0 C  F: 85% (3592 RPM)  E: 1100 MHz  M: 1500 Mhz  V: 1.090V  A: 99% P: 20%
Last initialised: [2013-05-02 13:58:33]
Intensity: 20
Thread 0: 597.5 Kh/s Enabled ALIVE

Cold GPU:

Code:
GPU 1: 596.8 / 590.7 Kh/s | A:27  R:0  HW:0  U:5.04/m  I:20
72.0 C  F: 37% (2138 RPM)  E: 1100 MHz  M: 1500 Mhz  V: 1.090V  A: 99% P: 20%
Last initialised: [2013-05-02 13:58:33]
Intensity: 20
Thread 1: 595.9 Kh/s Enabled ALIVE

Although the upper RPM is crazy the heat conduction does not seem to be as great as the lower GPU; I opened my case to increase air circulation but does not seem to help that much .. I think I'll replace my GPU 0 which is a fat ASUS with a thinner Sapphire to have more space for air circulation, or just rip everything out of the case and put them into an open laundry basket or something like that.
20  Other / Beginners & Help / Re: 2x ASUS 7950 low voltage problem on: May 01, 2013, 07:37:17 PM
@Apothem: Nope no crossfire, did try it though without any observable performance gains or losses. I also tried to plug in the thinner Sapphire 7950 into PCIe slot #1 and the larger Asus 7950 into slot #2 (instead of slot #3) but no gains here either:

Good GPU: (Sapphire)

Code:
GPU 0: 294.3 / 274.6 Kh/s | A:5  R:1  HW:0  U:2.14/m  I:20
76.0 C  F: 85% (4016 RPM)  E: 900 MHz  M: 1250 Mhz  [b]V: 1.169V[/b]  A: 99% P: 20%
Last initialised: [2013-05-01 22:14:20]
Intensity: 20
Thread 0: 276.9 Kh/s Enabled ALIVE

Evil GPU: (Asus)

Code:
GPU 1: 253.5 / 274.6 Kh/s | A:2  R:1  HW:0  U:1.43/m  I:20
37.0 C  F: 8% (1230 RPM)  E: 300 MHz  M: 150 Mhz  [b]V: 0.850V[/b]  A: 0% P: 20%
Last initialised: [2013-05-01 22:14:20]
Intensity: 20
Thread 1: 230.1 Kh/s Enabled ALIVE

An interesting observation is that if I plug my two Asus 7950 into the PCIe slots #1 and #3 the first Asus 7950 has a voltage of V: 1.090V while my Sapphire here uses V: 1.169V. The conclusion here is that my problem does not seem to be caused by an upper voltage limit, since V: 1.169V + V: 0.850V  (Sapphire+Asus) is larger than V: 1.090V + V: 0.850V (Asus+Asus). Observing this eliminates (almost) all my suspicions that my motherboard might be the root of all evil (was very unlikely anyway, since its brand new and was not the cheapest available).

And since all cards deliver individually excellent hashing rates (595Kh/s for both Asus and 630Kh/s for Sapphire), I started to think that software might be the reason why I can't increase my performance with the number of graphic cards linearly.  Undecided Another option might be that I need those powered risers (PCIe extension cables) to solve my voltage issues; since I don't have those cables available right now I'll continue to pray to the ASIC god to increase my hashing power through a miracle .. damn.  Embarrassed

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