SCRYPT

SHA-256,scryptScrypt (by Wikipadia) In cryptography, scrypt is a password-based key derivation function created by Colin Percival, originally for the Tarsnap online backup service. The algorithm was specifically designed to make it costly to perform large-scale custom hardware attacks by requiring large amounts of memory. In 2012, the scrypt algorithm was published by IETF as an Internet Draft, intended to become an informational RFC. A simplified version of scrypt is used as a proof-of-work scheme by a number of cryptocurrencies first implemented by an anonymous programmer called ArtForz in Tenebrix followed by Fairbrix and Litecoin soon.

SCRYPT

A password-based key derivation function (password-based KDF) is generally designed to be computationally intensive, so that it takes a relatively long time to compute (say on the order of several hundred milliseconds). Legitimate users only need to perform the function once per operation (e.g., authentication), and so the time required is negligible. However, a brute-force attack would likely need to perform the operation billions of times, at which point the time requirements become significant and, ideally, prohibitive.

Previous password-based KDFs (such as the popular PBKDF2 from RSA Laboratories) have relatively low resource demands, meaning they do not require elaborate hardware or very much memory to perform. They are therefore easily and cheaply implemented in hardware (for instance on an ASIC or even an FPGA). This allows an attacker with sufficient resources to launch a large-scale parallel attack by building hundreds or even thousands of implementations of the algorithm in hardware and having each search a different subset of the key space. This divides the amount of time needed to complete a brute-force attack by the number of implementations available, very possibly bringing it down to a reasonable time frame.

The scrypt function is designed to hinder such attempts by raising the resource demands of the algorithm. Specifically, the algorithm is designed to use a large amount of memory compared to other password-based KDFs, making the size and the cost of a hardware implementation much more expensive, and therefore limiting the amount of parallelism an attacker can use, for a given amount of financial resources.

BTCERY BITCOIN BAKERY
1
5/10
BTCERY BITCOIN BAKERY | NOT MONITORING
NOT MONITORING / 17th March 2017

BTCERY INTRODUCTION BTCERY offers anonymous, safe, fast, quality mining pools for cryptocurrency like DASH, BITCOIN, LITECOIN, ZCASH, Z-CLASSICS making your mining experience flawless is their core mission so they charge only 0,1% transaction fee which is lowest in the industry. It only takes minutes to get up and mining with them. They are currently mining the most popular SHA256, Scrypt and X11 coins. Also they run separate pull for mining Zcash and Zclassic. These coins based on zero-knowledge protocol providing you true anonymity. Connect your miners with them today to mine Bitcoins, Litecoins, Dash, Z-cash, Ether, Dogecoin and other precious crypto currency bringing you greater return on your investment with BTCERY. FROM PRIVATE INVESTORS IN BITCOINS TO ONE OF THE LARGEST MINING SERVICE PROVIDERS. BTCERY is a London based company; their founders are a diverse group of Mining Experts, Engineers, Entrepreneurs and Investors. They provide the easiest and most cost effective option for individuals to start their crypto-currency mining journey. Their solution is easy to understand, safe investment, user-friendly interface and offers a great ROI. This is the currency of the future and their job is to make it accessible to everyone. THEIR MISSION IS TO MAKE MINING ACCESSIBLE FOR…

GENESIS MINING 9.9/10
GENESIS MINING

GENESIS MINING INTRODUCTION GENESIS MINING is the world’s leading and most transparent hosted hashpower provider for Bitcoin and Altcoins. Reliable & Customer Oriented. They are heavily investing in the best available hardware to stay at the edge of technology. For you, it is the easiest way of mining: no need to assemble rigs or to have hot, loud miners in your home. Genesis Mining offers you a smart and easy way to invest your money. Their solution is suitable for those who are new to the world of crypto currencies, as well as for cryptocurrency experts and large-scale investors. Genesis Mining is the World’s first large scale multi-algorithm cloud mining service offering an alternative to those who would like to engage in Bitcoin and altcoin mining. They are a team of experts in the digital currency sector, and their core service is to provide the most efficient and reliable mining rigs for rent. No matter which package you choose, you are renting the latest technology, which guarantees profitability for as long as possible. Also, the rigs you rent consume very cheap electricity and are cooled efficiently, thanks to the optimal locations of their farms. To top this, there is no waiting for…

BITLIONER
8
8/10
BITLIONER
BITCOIN CLOUD MINING COMPANIES / 9th September 2016

BITLIONER INTRODUCTION BITLIONER:  You can start earning with your small investment now. Invest Now and get relaxed because they will set your share with out bitcoin mining hardware. Few steps and you can start mining with them. They establish hardware within maximum 3 days. They manage your investment/fund share and hardware during this time. Once your hardware is perfectally managed, Mining gain will be added daily to your wallet. They normally recommend user to make withdraw weekly. They do not have any hidden fees on weekly withdraw. But if you want daily withdraw then they charge 10% of withdraw amount. BITLIONER FACTS BITLIONER was last modified: April 19th, 2017 by Bitcoin Cloud Mining

STARTHASH
0
5/10
STARTHASH | NOT MONITORING
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….

CRYPTOMONITOR
1
7.9/10
GigaHash
5
9/10
GIGAHASH
BITCOIN CLOUD MINING COMPANIES / 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 was last modified: April 19th, 2017 by Bitcoin Cloud Mining

ZeusHash
0
6.5/10
ZEUSHASH | MOVED TO OXBTC
CLOSED / 17th January 2016

ZEUSHASH INTRODUCTION 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: April 1st, 2016 by Bitcoin Cloud Mining

Ore Mine
0
1/10
ORE MINE | DOMAIN HAS BEEN SEIZED
CLOSED / 16th December 2015

ORE MINE INTRODUCTION ORE MINE is an interesting concept that looks overwhelming but is actually rather simple. It is a faucet that works while you are away, but you will still need to check-in on it at least 1 time every 40 hours to collect the earnings generated every 8 hours. So let it tick over and earn for you, or get busy and promote, buy or gamble for upgrades that will increase your rate of return or add to your total bitcoin balance. ORE MINE FACTS ORE MINE | DOMAIN HAS BEEN SEIZED was last modified: April 1st, 2016 by Bitcoin Cloud Mining

MiningRigRentals
1
8/10
MINING RIG RENTALS
BITCOIN CLOUD MINING COMPANIES / 4th December 2015

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….