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Good news everyone!
As some have already noticed, we have rolled out two new features.
The big one is PPLNS payment model.
With PPLNS all shares you send are groupped into shifts, each containing roughly 2 billion shares. There is a ‘current’ shift, and once it is full, it is moved to ‘open’ state.
Ten shifts after ‘current’ one are considered ‘open’.
While shift is ‘open’, it receives 10% of rewards of all blocks mined by pool. Inside each ‘open' shift reward is distributed among users proportionally to their contribution.
That means, that you will continue receiving your rewards for some time even after stopping mining.
For all our existing users at the moment of launch there is NO pool fee for PPLNS model and fee for PPS model remains the same 3% for existing users.
Thank you for mining with us!
For new users pool fees are 1.5% for PPLNS and 6% for PPS.
Another ‘little’ feature - is a Donation option that you can set in Settings.
If you’d like to support us, just set it to a value above zero (thanks a lot!).
Stay tuned for more news!
Best regards,
Marko Babić, PR Manager,
50BTC.com
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Dear users!
We would like to inform you about the situation with our billing system.
As we mentioned before, the pool underwent several attacks. We have experienced DDOS attacks from August till October and attacks from miners who have been cheating us using vulnerability in difficulty checking algorithm; on 18 of October we went through attack with penetration and corruption of billing system. Due to these attacks billing data and part of the funds were lost.
After the crash the system was completely redesigned and launched with new database engine. We created new pool from scratch, all components of the system were recreated and now it is highly secure and stable.
In the new system we recreated most of the user accounts and workers. However, the old billing history is unavailable. As a result of the attack user balances were spoilt and unreal values were shown.
At the moment we are solving billing issues one by one. This process is quite complicated. The number of requests for payback of unreal balances is dramatically high which makes the process even longer. We are doing our best to recover available funds and resolve all the issues. However, it takes much time.
Users who were registered in the system before the launch of the new system (18.12.13) will get special conditions for mining on our pool.
Thank you for staying with us,
Marko Babić, PR manager
50BTC team.
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Dear users, This man have been blackmailing us for a while now. According to his story he had 44 BTC before the attack. According to his payout history: 2013-09-30 22:50:57 ab21717166a6b6926d7c222b4444a8293789d054f56d4b0b570b72a82700b365 - 0.01033231 BTC to 1LAscboM65juGQsHz1UZhE4dFNg7hDHqmC 2013-10-12 07:28:58 c44a76884c620eb1a89a0171883290bfcaf1371725d0223e63174627377e9cf2 - 0.01035159 BTC to 1LAscboM65juGQsHz1UZhE4dFNg7hDHqmC And the last transaction took place 2013-10-15 09:43:13 1b9ab4172777e045f0d053edad18bb41f7fc29d72bd6aa7abbe6c2d315661371 - 0.01554411 BTC to 15eEGA9UgNPtbqDuMqYfFXQNZaUrn95NVr No more than 0.02 BTC payout for 2 weeks. 2013-10-18 we’ve been attacked. In 3 days his balance somehow grew from 0 to 44 BTC. Even 5TH/s ASIC won’t let you do that @267731249 difficulty. Also, on December 2 he claimed in Skype “I have 2 weeks to get this settled and get my rent payed or i will be homeless and evicted from my home”, nevertheless on December 4 according to his Bitcointalk message history he was ready to buy ASIC for 12000$. It’s either a scammer with possible multiple accounts - see Meyblaubaer https://bitcointalk.org/index.php?topic=54673.msg4134228#msg4134228 and their writing style similarity or/and a competitor pool which changed the tactics from DDoS to blackmailing. We have contacted abuse team of bitcointalk about the issue. Regards, 50BTC.com team |
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Hello,
As you all probably know in October our pool have been heavily attacked. Which have led to corruption of our database, loss of funds and mess with the balances.
Recently we’ve received a big number of blackmailing letters from the people who even don’t have an account at our pool.
There have always been foes who were against 50BTC.
We assume that some of our competitors are not playing fair. As soon as we started new system we were harassed from all possible angles.
Currently we can’t afford ourselves to be drawn away with such distraction.
We’ve worked 24x7 for a past 2 months and we won’t let this go down the drain. Now the two rival pools have more than 57% of the network power. Our goal is to become the biggest mining pool again and to protect the network from the 51% attack.
Please, if you have any questions feel free to contact us through the support form or tell us your username in personal messages at forum so we could resolve your issue.
Also we want to take a moment and thank our users who are truly supporting us in this difficult moment.
Regards, 50BTC.com team
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Some Updates:
They are all day long online but not Responding via E-Mail, Skype or Support Ticket. So there will be no possibility to recover the already mined BTC. I think they have been "gone".
So in my opinion this is a scam/fraud pool with a robber as owner.
I get them 48 hours to answer via one channel but nothing happened. I think everyone is a bit pissed now.
What is curious: one week ago skype showed them from russia, not it shows them from swiss. Maybe i will make a journey to them (it only takes 2-4 hours to get there) and talk to them face to face.
I don't like to go to any government, but it looks like the only solution to get something back (even when it is 50 % of what i've mined).
I already talked to a lawyer of the state and he confirmed that what they've done is fraud/robbery (he is a friend).
Hello, According to information that we have: Your account registration date is 02.16.2013 According to data that you have provided: On the old system you had 3 workers: Worker 1: 2 x AMD ATI Radeon 7950 GhZ Edition Worker 2: 2 x AMD ATI Radeon 7970 GHZ Boost Edition Worker 3: 6 x FPGA Miner with X6500 Rev 3 Worker 1 estimated speed = 1 Gh/s Worker 2 estimated speed = 1.2 Gh/s Worker 3 estimated speed = ~2.3 Gh/s Sum = 4.5 Gh/s Estimated speed is calculated based on https://en.bitcoin.it/wiki/Mining_hardware_comparison and http://store.fpgamining.com/products/x6500-rev3Reward was calculated with http://www.alloscomp.com/bitcoin/calculator reward calculator. Mining dates Difficulty Reward 02/16 - 02/18 3275465 1.4 BTC 02/18 - 03/01 3651012 7.5 BTC 03/01 - 03/14 4367876 7.2 BTC 03/14 - 03/24 4847647 5.3 BTC 03/24 - 04/05 6695826 3.7 BTC 04/05 - 04/17 7673000 3.4 BTC 04/17 - 04/30 8974296 3.1 BTC 04/30 - 05/12 10076293 2.8 BTC 05/12 - 05/25 11187257 2.6 BTC 05/25 - 06/05 12153412 2.1 BTC 06/05 - 06/16 15605633 1.6 BTC 06/16 - 06/29 19339258 1.5 BTC 06/29 - 07/11 21335329 1.25 BTC 07/11 - 07/22 26162876 1 BTC 07/22 - 08/03 31256961 0.86 BTC 08/03 - 08/13 37392766 0.67 BTC 08/13 - 08/24 50810339 0.48 BTC 08/24 - 09/04 65750060 0.34 BTC 09/04 - 09/14 86933018 0.26 BTC 09/14 - 09/25 112628549 0.22 BTC 09/25 - 10/06 148819200 0.16 BTC 10/06 - 10/16 189281249 0.12 BTC Sum = 47.56 BTC Thus, obviously based on this data your balance can’t be 71 BTC, as you mentioned, even if you never withdraw your funds and all your workers were mining 24x7 without any downtime. Currently we’re trying really hard to recover from the attack and develop a new stable and secure system. And instead of this we’re wasting our time on this blackmail. Regards, 50BTC.com team |
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Status Update
After the attacks that we’ve experienced from August 2013 till the October we’ve lost user balances data and huge part of the funds. We still can not figure out the full list of vulnerabilities that have been used to perform the attack. One of the assumptions is physical unauthorised access to our servers which could take a place only if someone got an access to the hardware in datacenter.
Also we can’t rule out the possibility that someone found or create an exposure or backdoor in our billing software.
Currently we have few topics to deal with:
First thing that we’ve been able to figure out is that few fast miners have been cheating us using vulnerability in difficulty checking algorithm. This vulnerability is probably applicable to the other fair pools, so we will publish description in next few hours to help others avoid our fate. This difficulty fraud have led to the loss of the significant part of the funds.
Second thing is incessant DDOS attacks that started in early August and magically stopped in few days after billing was hacked (that seems to be the last stage of the attack).
Third thing is that we have weird jumping luck during August-September period which jumped from 40% to 120% daily and sharply increased hash rate of the few new users with abnormal large amount of stale shares.
Obviously this couldn’t be a regular coincidence and obviously this can’t be applied by one certain user. In general all of this only make sense if one or few competing pools decided to eliminate 50BTC for whatever reason. We are exploring all available data to figure out if some users was not real users but the proxied shares from the evilpool.
When miner formally connects to the evilpool it actually goes to the 50BTC through a proxy to get a job, and after that evilpool proxies all shares except of winning ones back to 50BTC. This could cause total bad luck that we’ve faced in a last few weeks.
But this is for sure not only things we will find in the next few days, before we will get the confidence that funds in pools wallets are safe. Only after that we will put additional funds and will enable payouts.
Still we are looking forward into the future with a hope and working damn hard rewriting our billing subsystem and moving our hardware to the another datacenter.
For all our users who believe in us and for all those bullshit fuckers who think that 50BTC is dead and already celebrating their victory, we have one main message:
50BTC is alive and will get back fast and stable as a hell in next few weeks.
Stay tuned!
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Status Update
After the attacks that we’ve experienced from August 2013 till the October we’ve lost user balances data and huge part of the funds. We still can not figure out the full list of vulnerabilities that have been used to perform the attack. One of the assumptions is physical unauthorised access to our servers which could take a place only if someone got an access to the hardware in datacenter.
Also we can’t rule out the possibility that someone found or create an exposure or backdoor in our billing software.
Currently we have few topics to deal with:
First thing that we’ve been able to figure out is that few fast miners have been cheating us using vulnerability in difficulty checking algorithm. This vulnerability is probably applicable to the other fair pools, so we will publish description in next few hours to help others avoid our fate. This difficulty fraud have led to the loss of the significant part of the funds.
Second thing is incessant DDOS attacks that started in early August and magically stopped in few days after billing was hacked (that seems to be the last stage of the attack).
Third thing is that we have weird jumping luck during August-September period which jumped from 40% to 120% daily and sharply increased hash rate of the few new users with abnormal large amount of stale shares.
Obviously this couldn’t be a regular coincidence and obviously this can’t be applied by one certain user. In general all of this only make sense if one or few competing pools decided to eliminate 50BTC for whatever reason. We are exploring all available data to figure out if some users was not real users but the proxied shares from the evilpool.
When miner formally connects to the evilpool it actually goes to the 50BTC through a proxy to get a job, and after that evilpool proxies all shares except of winning ones back to 50BTC. This could cause total bad luck that we’ve faced in a last few weeks.
But this is for sure not only things we will find in the next few days, before we will get the confidence that funds in pools wallets are safe. Only after that we will put additional funds and will enable payouts.
Still we are looking forward into the future with a hope and working damn hard rewriting our billing subsystem and moving our hardware to the another datacenter.
For all our users who believe in us and for all those bullshit fuckers who think that 50BTC is dead and already celebrating their victory, we have one main message:
50BTC is alive and will get back fast and stable as a hell in next few weeks.
Stay tuned
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Hi there! We keep on investigating the way the billing-software was hacked but vulnerability still can not be identified. That's why we’ve made a decision to rewrite billing software from scratch. We must admit that a significant amount of bitcoins was stolen during this attack. Currently our main goal is to restore pool's service as soon as possible. During the pool's history there were lots of different attacks, including loss of 1170 bitcoins ( TX1, TX2, TX3, TX4). 50BTC has covered all losses. Users were never affected. At this moment we are working around the clock to restore the database and we need your assistance, because each user's case is handled individually, so please be patient. We are expecting that in few weeks pool will get up and running with a new billing software and security system. All users registered before October 18th will get a special conditions for mining on 50BTC. In this difficult time for us, we are looking forward to your support and understanding. |
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Hi there! We keep on investigating the way the billing-software was hacked but vulnerability still can not be identified. That's why we’ve made a decision to rewrite billing software from scratch. We must admit that a significant amount of bitcoins was stolen during this attack. Currently our main goal is to restore pool's service as soon as possible. During the pool's history there were lots of different attacks, including loss of 1170 bitcoins ( TX1, TX2, TX3, TX4). 50BTC has covered all losses. Users were never affected. At this moment we are working around the clock to restore the database and we need your assistance, because each user's case is handled individually, so please be patient. We are expecting that in few weeks pool will get up and running with a new billing software and security system. All users registered before October 18th will get a special conditions for mining on 50BTC. In this difficult time for us, we are looking forward to your support and understanding. |
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Important news!
We want to inform you that shop.50btc.com have orders processing mechanism completely separated from 50btc.com billing.
This attack will not affect shop's work in any way, it's still accepting orders.
Orders information was not exposed and BitMine received all the customer's funds.
All special offers are still in place.
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Important news!
We want to inform you that shop.50btc.com have orders processing mechanism completely separated from 50btc.com billing.
This attack will not affect shop's work in any way, it's still accepting orders.
Orders information was not exposed and BitMine received all the customer's funds.
All special offers are still in place.
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Dear 50BTC users!
Our billing was hacked on Friday.
We're doing our best to fix the consequences of this attack.
Currently we are solving the problems for each user in the individual way.
Until we figure out which vulnerability was used to perform the attack all workers will be switched to the DGM mode with 0% pool's commission.
PPS mode will be available again as soon as we recover corrupted data.
Thank you for your patience.
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Dear 50BTC users!
Our billing was hacked on Friday.
We're doing our best to fix the consequences of this attack.
Currently we are solving the problems for each user in the individual way.
Until we figure out which vulnerability was used to perform the attack all workers will be switched to the DGM mode with 0% pool's commission.
PPS mode will be available again as soon as we recover corrupted data.
Thank you for your patience.
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До 31 октября скидка 15% на ASIC майнеры Coincraft 28nm! С сегодняшнего дня и до 31 октября пул 50BTC дарит скидку 15% на ASIC майнеры, в честь приближающегося праздника Halloween  При оформлении заказа на сайте shop.50btc.com, вы получаете не только самую выгодную цену, но и бесплатную доставку курьерской службой в любую точку мира. Оформить заказ прямо сейчас
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15% discount on Coincraft 28nm ASIC miners until October 31st!Now until October 31st 50BTC pool presents 15% discount on ASIC miners, due to upcoming Halloween holidays  We also offer the best price and free worldwide shipping for all shop.50btc.com customers. Order now!
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BitMine AG изменяет срок отгрузки 28нм майнеров, заказанных после 17 октября и отказывается от производства майнеров на 55нм чипах!
Спешим сообщить, что с 17 октября все заказы на майнеры CoinCraft, основанные на чипах, произведенных по 28нм техпроцессам, будут отгружаться производителем с января 2014 года, это связано с увеличением количества заказов. Для оплативших заказ до 17 октября действуют прежние сроки доставки.
Также хотим уведомить о том, что производитель отказался от производства майнеров на основе 55nm процессоров, на который был открыт предварительный заказ без возможности оплаты. Отказ от производства данной продукции связан с тем, что при тестировании первой партии продукции были показаны неудовлетворительные результаты работы.
Напоминаем, что на пуле 50BTC вы можете заказать майнеры на 28nm процессорах по самой низкой цене и с гарантированной бесплатной доставкой, при заказе до 31 октября, спешите.
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BitMine AG changes the shipment dates of 28nm miners that were ordered after October 17, and refuses to product miners with 55nm chips!
We hasten to announce that after 17 October, all the 28nm CoinCraft miners orders, will be shipped from the manufacturer in January 2014, due to increase of the number of orders. If you have paid the orders before 17 October, the delivery dates will be the same.
Please note that the manufacturer has cancelled the 55nm miners production. Preorders for these devices were taken without prepayment. The first batch showed poor performance in tests.
Please keep in mind that on 50BTC you can order 28 nm miners at the lowest prices with a free delivery (for the orders made before 31 October). Hurry up!
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Great news! We are extending special shipping conditions till October 31th. We provide free shipping for 50BTC users who make an order in October.
And even more benefits:
We offer the lowest price on CoinCraft ASIC devices
At the test stage your ASIC miner will be connected to your 50BTC worker
Please note:
Free shipping option could be applied only for 50BTC users
Currently we accept BTC payments only
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Продление акции по бесплатной доставки ASIC-майнеров для пользователей пула 50BTC до 31 октября!
Друзья, мы рады сообщить о продлении акции по бесплатной доставке майнеров, при осуществлении заказа до 31 октября 2013.
Напоминаем о специальных условиях, действующиx для наших пользователей:
· Самая низкая цена на ASIC-майнеры CoinCraft
· Уже на этапе тестирования ваш майнер будет работать на вашем воркер на пуле 50BTC
Пожалуйста, обратите внимание, что:
· Бесплатная доставка распространяется только на пользователей пула 50BTC
· В текущий момент оплата принимается только в BTC
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Уважаемые пользователи!
Сегодня у нас две новости:
Во-первых, в связи с постоянным ростом мощности пула, мы повышаем минимальную выбираемую сложность шар до 4. Это делается для того, чтобы снизить пользовательский трафик и не затронет заработок пользователей.
Во-вторых, getwork переезжает на отдельный сервер. Если вы хотите работать по getwork протоколу, необходимо прописать адрес пула: gw. 50btc.com в настройках вашего майнера.
С 18 октября перечисленные ниже серверы будут работать только по протоколу stratum:
pool.50btc.com
pool-de.50btc.com
pool-us.50btc.com
pool-ru.50btc.com
Для майнеров, использующих getwork протокол, будут доступны следующие серверы:
gw. 50btc.com
pool2.50btc.com
pool80.50btc.com
С уважением, команда 50BTC.com
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