SHA-256SHA-225 (Secure Hash Algorithm 2) (by Wikipedia) is a set of cryptographic hash functions designed by the NSA. SHA stands for Secure Hash Algorithm. Cryptographic hash functions are mathematical operations run on digital data; by comparing the computed “hash” (the output from execution of the algorithm) to a known and expected hash value, a person can determine the data’s integrity.


For example, computing the hash of a downloaded file and comparing the result to a previously published hash result can show whether the download has been modified or tampered with. A key aspect of cryptographic hash functions is their collision resistance: nobody should be able to find two different input values that result in the same hash output.


HASHMINING.EU INTRODUCTION HASHMINING.EU is an organization of skilled professionals from different fields who commonly believe in future of cryptocurrencies. Headed and founded in late 2016 by Chief Executive Officer, Victor Grosser, (of, leads a team of experienced cloud and crypto mining engineers, analysts and developers, who are committed to transforming the use and delivery of cryptocurrencies from Europe to the globe. Theiur team has been involved with cryptocurrencies since the inception of Bitcoin. By using their services, anyone can enjoy the receiving their cryptocurrencies through mining and without the need to set up any equipment. Delivering on our “Fund Your Revenue” value, we are easy-to-use, safe and secure. HASHMINING.EU FACTS HASHMINING.EU was last modified: June 21st, 2017 by Bitcoin Cloud Mining


VIABTC INTRODUCTION VIABTC is now launching our cloud mining product — an easy way for EVERYONE to mine your own Bitcoins. Their first cloud mining contract — ViaBTC S9 will run with Antminer S9, the most advanced mining rigs today. All cloud hashrates will come from the miners ViaBTC purchases and deploys. Now they have deployed their Batch 1 of 2.4 PH/s cloud hashrates for global customers to purchase. VIABTC FACTS VIABTC was last modified: August 14th, 2017 by Bitcoin Cloud Mining

NOT MONITORING / 6th November 2016

HASHBX INTRODUCTION HASHBX Antpool which is open for users all around the world. BITMAIN has invested significant resources into developing more efficient digital currency pool. Antpool supports mining of Bitcoin, Litecoin, Ethereum, uses Stratum protocal, and support payment method of PPS and PPLNS. Pool nodes are deployed around the world to improve performance and provide redundancy. Miners are automatically routed their closest location, including United States, United Kingdom, Germany, Norway, Hong Kong, Beijing, Shenzhen, Qingdao, Hangzhou, Thailand (HashBX) and more. HASHBX FACTS HASHBX | NOT MONITORING was last modified: December 3rd, 2016 by Bitcoin Cloud Mining

SCAM / 13th September 2016

BITZMINING INTRODUCTION BITZMINING was founded in July 2013. They are rapidly growing company in trading and digital crypto currency mining. Over the time they have developed unique mining algorithms and with the latest ergonomic hardware and equipment, they offer highest profit and top notch security. They use best encryption technology and top class site security with a SSL to protect private data. With our there mining contracts, clients have an opportunity to buy some GHS for earning bitcoins. You only need bitcoin wallet and internet connection. Bitcoin Cloud Mining is the newest way for users to mine Bitcoin. There are many advantages of using cloud services such as: no electricity bills, no equipment to buy or upgrade, software issues, space, noise and no need to acquire coolers. Bitcoins are limited to a maximum of 21M BTC and with growing difficulty, the mining process have become more and more complicated and difficult. To overcome this challenging arithmetic problems, they use advanced professional mining hardware and equipment. Their cloud mining contracts guarantee you a higher earnings on your invested amount. They do the mining and pay you the profit every day BITZ MINING DISCOUNT CODE: 57d83c935aa7c You get a discount on all Hash Power packs with…

NOT MONITORING / 6th June 2016

GAINBITCOIN INTRODUCTION GAINBITCOIN was formulated in the year 2013 to give users an amazing online platform for bitcoins trading and mining. The ease and features of the website have enhanced our customer base to significant level which became their inspiration to open up new mining farms lately. They are dealing with cryptocurrency from the time concept of Bitcoin was introduced in the market. Their company is run by the proficient personnel comprising brilliant programmers and engineers. Strength of their team is that we hold strong and positive belief in the rising digital currency. It connected us and today they all put our combined efforts in the development, establishment and acceptance of Bitcoin as currency as well as new economy. With the experience of total three years in mining digital currency, they have realized the need of safe, effective and prompt mining servers in the industry. Consequently, they came up with the advanced technology to make mining accessible to all regardless of their age, location, budget or technical knowledge. Being a part of this growing community is the zeal that keeps us going in providing our customers with the best cryptocurrency mining. Try the future digital currency now and collect Bitcoins as…

NOT MONITORING / 1st June 2016

HAOBTC INTRODUCTION HAOBTC was incorporated in September, 2014. It is a venture solely owned by Beijing Inevitable Technologies Ltd.. The founding members graduated from some of China’s top-notch universities and previously worked at leading tech companies such as Baidu, Microsoft, etc. Less than two years after its incorporation, HaoBTC has built a user base in excess of 30,000. Its Buy&Sell, which has been in operation for a year, has an accumulated a collective trading volume in excess of RMB one billion. As of today, HaoBTC ranks near top in terms of wallet outbound and inbound transaction volume. In April, 2016, HaoBTC launched Exchange. Within a week, the daily trading volume reaches 3000BTC mark. By all measures, HaoBTC is an up-and-coming star in the digital currency space. Whatever success we have achieved, they owe it to their development prowess, service quality and risk-control measures. HAOBTC FACTS   HAOBTC | NOT MONITORING was last modified: November 17th, 2016 by Bitcoin Cloud Mining

NOT MONITORING / 17th March 2016

STARTHASH INTRODUCTION STARTHASH believes mining is important for Bitcoin’s future and adoption as a global financial network. They have years of experience mining bitcoin with various hardware and software platforms. They have opened their private mining installation to the public and private investors. Their first target was to deliver 1 PH of mining power in their first public farm by the end of 2015. They are constantly expanding their operations with new locations and installations, looking for the most powerful hardware and cheapest electricity to provide you with the best mining efficiency. The mining services industry is littered with failed and dishonest operations that have robbed mining enthusiasts over the years. They believe strong businesses with good leadership and technical knowledge can remain viable in the future. Their efforts are based on a long term and stable vision and they intend to provide transparency and honesty regarding their equipment, mining capacity and contractual offerings. Their hashing power is prepared and sold only after they can guarantee that the infrastructure, mining equipment and electricity can be paid up to the contract expiration dates. Their planned projects are targeted for a vertical integration into the Bitcoin ecosystem, with mining being the first step….

SCAM / 17th January 2016

GIGAHASH INTRODUCTION GIGAHASH offers Bitcoin Cloud Services an easy and safe way to purchase hashpower without having to deal with the complex hardware and software setup. The company is registered in Varna, Bulgaria / European Union and operate under EU and Bulgarian law. They start mining on December 2013 and continue to grow in 2014. Тhe idea to create a company and launch their own business came after several private investors wanted to invest money in crypto currency like Bitcoin. Their first investor was a sailor who wanted at all costs to invest in Bitcoin, but knew nothing about mining hardware. The services they offer are geared to such clients. Understand the importance and future of crypto currencies, but lack the necessary knowledge and free time to dig alone. Мinimum percentage of all competitors are actually real companies with real hardware. Time and our customers will prove that we are not phantoms. GIGAHASH FACTS GIGAHASH | N0T PAYING was last modified: August 9th, 2017 by Bitcoin Cloud Mining

CLOSED / 17th January 2016

ZEUSHASH | MOVED TO OXBT ZEUSHASH Integrated Systems Limited is known for its ability to deliver state of the art crypto currency ASIC chip design and miner manufacturing. Their mission is to connect global crypto currency lovers together and provide excellent goods and services for the community They want to introduce a win-win solution to the community to make the best of global resources to better serve you. Their Global Mining Network consists of many reliable partners together to deliver the most cost-efficient hashing power and cloud service for all customers. Backed by the team that brought the most popular LTC (Scrypt) miner in the world – ZeusMiner, ZeusHash is stable with superior performance from day 1. With their proven track record and transparency, it’s a service you can trust. ALL CLOUDHASH TRANSFFERED TO OXBTC ZEUSHASH FACTS ZEUSHASH | MOVED TO OXBTC was last modified: June 2nd, 2017 by Bitcoin Cloud Mining


MINING RIG RENTALS INTRODUCTION MINING RIG RENTALS is based on our own experience renting multiple Bitcoin mining rigs from them.  MRR has the largest inventory of mining rigs available for rent.  Their service offers every single mining algorithm available. You can rent multiple rigs at one time. You can define up to 5 pools which gives you security and peace of mind that your miners will always be mining.  You can even create profiles to make it easier to rent miners for specific coins. The only real drawback we’ve found with Mining Rig Rentals is that it is annoying to update a lot of rigs at one time.  We had 27 rigs rented at once and when one of our primary pools started to have difficulties we had to go back and add some new pools to our rigs. There isn’t a single screen to update multiple rigs. Instead you have to click on each one to update separately. This isn’t a problem for most people.  Most people aren’t renting a lot of rigs at one time.  Additionally most people have a regular set of pools they mine. We were mining a new coin where new pools were being created daily….

Mining Sweden
SCAM / 17th November 2015

MINING SWEDEN INTRODUCTION MINING SWEDEN objective is to provide a mining solution to investors that are looking for a solution where the miners really exist and where there ist still profitable to mine. As Mining Sweden get investors for their VIP Shares. 50% will be their investors as Mining Shares and 50% will be for the company giving them a platform to develope their capital base and also develope their other services to provide their investors a good return on their VIP Share that they have invested in. MINING SWEDEN FACTS MINING SWEDEN | NOT PAYING was last modified: May 27th, 2016 by Bitcoin Cloud Mining

SCAM / 11th November 2015

TERABOX INTRODUCTION TERABOX is using one of the most advanced bitcoin miners on the market today with great efficiency therefore lower power costs and low maintenance fees. TeraBox has a powerful network of ASIC (Application-specific integrated circuit) powered computers specifically designed to mine bitcoins. The power those machines generate is used to solve blocks which in turn will reward you with bitcoins. The power generated to be able to mine bitcoins is called “Hashing Power”. They sell hashing power in the form of bitcoin mining contracts which are measured in Gigahashes per second(GH/s). The more GH/s you purchase the more bitcoins you will be able to mine. TERABOX FACTS TERABOX | NOT PAYING was last modified: June 27th, 2017 by Bitcoin Cloud Mining

NOT MONITORING / 11th November 2015

HASHNEST INTRODUCTION Bitmain launched HASHNEST in mid-2014 as a joint venture with Umisoo to provide a hardware-backed cloud mining service. Although they have a short history, I have personally dealt with Bitmain, Umisoo and HashNest, and service has been great so far – although I admit that there can be a bit of a language barrier at times. I’ll keep this post updated as I get more experience with HashNest. HashNest is one of the most likely services to be backed by physical Bitcoin mining hardware, due to their connection with Bitmain. My only concern with HashNest is what will happen if Bitcoin falls to levels where mining revenue is less than maintenance fees. Will contracts automatically expire, or will they be reinstated as soon as mining becomes profitable once again? Time will tell, but I being associated with one of the largest mining hardware manufacturers helps me to trust HashNest a lot more than other cloud mining firms out there. HashNest originally offered some decent pricing on cloud mining contracts when they first launched, but after the recent Bitcoin price drop, their pricing dropped as well. At the time of this review, pricing is 1.68802฿ for 2 TH/S. That works…