Now you understand what im talking about, seriously 2000 TH/s mining Bitcoin at 2400w (where the latest Antminer S17 is 72Th/s), or mining ETH and the profit is so big that it will cover the miner cost faster then month. And another thing, they using the same hardware to mine multiple currencies which every one of them needs different hardware. Worst thing is that people will loose money, and most likely some of them already did. People think they will get rich after buying this miner, which they will never receive. Their fake products look so bad, their cheapest version ZiBit 2.0 looks like an ATX power supply. https://preview.redd.it/sj7oslyl3cb41.jpg?width=1606&format=pjpg&auto=webp&s=470d5ceb04049cb3b617eb3fa1294e414def0b90 Few things to also note is :
They have support chat on their website. I did send them a message and got response after about 20 minutes. So they told me that they only accept crypto currency, and the products are shipped from United Kingdom. My last line of the chat was "im coming for you you'll be in jail soon ".
When you google miner name, there is few websites coming up describing how great is their product. This most likely is owned websites for this scammer or this is purchased content posts.
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This post is a temporary resting place for FAQs while we wait for the release of VertDocs.
What is Vertcoin?
Vertcoin is a digital peer to peer currency focused on decentralization and ASIC resistance. Vertcoin is aiming to be easily accessible to the everyday user without extensive technical knowledge. Vertcoin has started to lower the barrier of entry with lots of video guides and the development of the One Click Miner (OCM).
Why does ASIC Resistance Matter?
ASICs (Application Specific Integrated Circuits) are dedicated mining devices that can only mine one algorithm. Coins like Bitcoin and Litecoin both made GPU mining obsolete when SHA-256 and Scrypt ASICs were created.
ASIC Resistance and How it Makes Vertcoin Decentralized
Vertcoin believes that ASIC resistance goes hand in hand with decentralization. ASICs are made by companies like Bitmain and almost all the original sellers of ASICs sell on a preorder basis. When pre ordering an ASIC you are buying from a limited batch that the ASIC company has produced. Often times the batch will not be fully filled and the ASIC company will often have left over ASICs. When the ASIC company has left over ASICs they will put them to work mining. Soon enough the ASIC company will have a very large amount of unsold ASICs that are mining and slowly the ASIC company starts to own a large part of the network’s hashrate. When an ASIC company(s) starts to own a large majority of the hashrate the network can become very centralized after a while. Having your network consist of a few large companies can be very dangerous as they could eventually get 51% hashing power and 51% attack your network, destabilizing the network. When your network is made out of a lot of smaller miners, like Vertcoin, it is much harder for your network to be 51% attacked, therefore increasing network security. By having centralized hashing power your coin effectively centralizing the network as the centralized hashing power can deny transactions and stop any activity they don’t want.
What Ways is Vertcoin Superior to Litecoin and Bitcoin?
Network Difficulty Adjustments with Kimoto Gravity Well
Vertcoin uses a difficulty adjustment called Kimoto Gravity Well which adjusts the difficulty every block, whereas Bitcoin and Litecoin’s difficulty changes every 2016 blocks. By adjusting the difficulty every block Vertcoin’s block time can stay consistent by adjusting for the fluctuation in network hash rate from hash rate renting and part time miners. If a large miner switches off Bitcoin or Litecoin mining the network could be slowed to a crawl until 2016 blocks are mined and the difficulty can change to adjust for the new network hash rate. We observed this happen to Bitcoin when Bitcoin Cash became more profitable than Bitcoin and Bitcoin’s network hash rate saw a steep fall off, slowing the network to a crawl. If this was to happen with Vertcoin the difficulty would adjust after 1 block was mined, allowing Vertcoin to always be profitable to mine.
Anyone can Meaningfully help Verify Transactions
In Proof-of-Work crypto currencies miners help secure the blockchain and get rewarded with the block reward. In ASIC mineable coins like Bitcoin and Litecoin you can’t meaningfully verify transactions unless you pay 1000-2000$ for a ASIC miner. When you mine with a CPU or GPU in a ASIC mineable coin you make no meaningful impact on the network. It is like trying to break concrete with a shovel while everyone else has a jackhammer.
Simple Upgrades Aren’t Held back by 1-2 Large Miners
In ASIC market people buy ASICs in batches in a preorder. With Bitcoin ASICs there is not enough demand for ASICs so the batch often doesn’t get sold out so now the manufacturer has spare ASICs. Now that the manufacturer has spare ASICs they will often start mining with them and eventually the ASIC company has one of the highest hash rates. If the ASIC company doesn’t want a certain upgrade to go through, for example SegWit, they can vote with their hash rate to hold back the upgrade forever or at least until people who want SegWit get more hash rate.
You Have a Say in Protocol Rules and Consensus
In Bitcoin you are a passive observer because you can only issue transactions and you have no part in the process after that. In Vertcoin you can be apart of the process for deciding the ordering of transactions and deciding what transactions get into blocks.
Block Rewards and Transaction Fees are Distributed Evenly
In Bitcoin and Litecoin the block rewards and transaction fees are often given to the large miners in China due to mining centralization created by ASICs. Vertcoin distributes its mining rewards to people all around the world thanks to the mining decentralization.
When will Atomic Swaps Be Ready?
Atomic Swaps can be done in two flavors: On-chain and Off-chain (via Lightning Network). On-chain swaps were actually done already using Blocknet, you can see it in use on Youtube. We're looking into doing it again using Interledger. However our main focus is to do off-chain Atomic Swaps using Lightning Network technology. Because it has the same benefits as Lightning transactions: No network fees and instant transactions. For off-chain swaps we need Lightning Network to be fully operational. It's difficult to give an ETA on that since we aren't the ones developing it. U/gertjaap posted a video on the current state of the Lightning Network for Vertcoin a while ago, which you can see here. This was actually the "bleeding edge" of Lightning Network at the time. was able to use it on VTC's main net, meaning that our blockchain is ready for the good stuff. As you can see however, it can't yet be considered production ready (most users would want a little better UX than a command line app). Now off-chain Atomic Swaps is a technique based on the same principles as Lightning Network, but adds an extra complexity for it being across chains. So it's basically the same as a "multi hop" Lightning payment, which is not yet built by any of the implementations. They're still working hard on making the single-hop payments robust. So in order for AS to be possible, LN has to be fully operational. A timeline cannot be given at this time, because frankly we don't know. The implementation of Lightning Network we feel has the most potential is LIT, because it supports multiple currencies in its protocol (where LND is bitcoin-only at the time and requires significant work to support other currencies, which is an essential part of being able to work across multiple blockchains). LIT is open source and there's nothing secretive about its progress, you can see the development on Github. We even have our lead dev James Lovejoy (u/jamesl22) close to the action and contributing to it where possible (and our team as well through testing it on the Vertcoin chain). So we're not developing LN or AS ourselves, we're just ready with our blockchain technology whenever it becomes available. If we have any real progress that has some substance, you can expect us to let the world know. We're not interested in fluffy marketing - we post something when we achieve real progress. And we are not keeping that secret.
How do I Choose the Right Vertcoin Wallet?
Deciding what Vertcoin wallet you should choose can be a difficult process. You can choose between three different wallets: Core, Electrum and Paper. Once you decide you can use the "How to Setup Your Vertcoin Wallets" video guide to assist you.
The Core wallet is the wallet that most people should use. It will store the entire blockchain (~2GB) on your computer. The Core wallet is the only wallet that fully supports P2Pool mining. You will also have to use the Core wallet if you plan to run a P2Pool node or any Vertcoin related server.
The Electrum wallet is a light wallet for Vertcoin. You do not have to download the blockchain on your computer, but you will still have your own private keys on your computer. This is recommended for people who don't need to store Vertcoins for very long and just need a quick but secure place to store them.
The Paper wallet is as the name implies, a physical paper wallet. When generating a paper wallet you will get a pdf that will need to print out. A paper wallet is normally used for long term storage since it is the safest way to store Vertcoins. A paper wallet can also be called "cold storage." Cold storage references the storage of your coins offline, preventing you from getting hacked over the internet.
Ledger Nano S
The Ledger Nano S is a hardware wallet designed by Ledger. A hardware wallet is similar to a paper wallet since it is normally used for cold storage. The hardware wallet is on par with the security of a paper wallet while being easy to use and setup. Note: You should never mine directly to a Ledger hardware wallet.
You can get the latest version of the One Click Miner in the Vertcoin Discord. The download is pinned to the top of the #oneclick channel.
What do all the Numbers Mean on P2Pool’s Web Interface
I've seen a lot of confusion from new miners on public p2pool nodes, so here's a primer for the most common static node page style, for first time miners: https://imgur.com/K48GmMw
Active Miners on this Node
Address - This is the list of addresses currently mining on this node. If your address does not show up here, you are not mining on this node.
This is a snapshot of your hashrate as seen by the node. It will fluctuate up to 15% from the hashrate you are seeing on your mining software, but will average out to match the output in your mining software.
This is the amount of your hashing contribution that is rejected, both in hashrate and as a percentage of your total contribution. Running your own p2pool node minimizes this number. Mining on a node that is geographically close to reduce lag also minimizes this number. Ideally you would like it to be less than 1%, but most people seem happy keeping it under 3%.
This speaks for itself, it is the difficulty of the share being currently worked on. Bigger numbers are more difficult.
Time to Share
This is how long you need to mine before you will receive any payouts, or any "predicted payout." The lower your hashrate, the higher your time to share.
This is the reward you would receive if a block was found by p2pool right now. If it reads "no shares yet" then you have not yet been mining the requisite amount of time as seen in the previous "time to share" column.
This is the total hashrate of all the miners mining vertcoin everywhere, regardless of where or how.
Global Pool Hashrate
This is the total hashrate of all the miners mining vertcoin on this p2pool network, be it the first network or the second network.
Local Pool Hashrate
This is the total hashrate of all the miners mining Vertcoin on this node.
Current Block Value
This is the reward that will be given for mining the current block. The base mining reward is currently 50 VTC per block, so any small decimal over that amount is transaction fees being paid by people using the network.
Network Block Difficulty
This is the difficulty of the block being mined. The higher the number, the higher the difficulty. This number rises as the "Network Hashrate" rises, so that blocks will always be found every 2.5 minutes. Inversely, this number falls when the "Network Hashrate" lowers as well.
Expected Time to Block
This is a guess at how much time will elapse between blocks being found by this p2pool network. This guess is accurate on average, but very inaccurate in the short term. Since you only receive a payout when the network finds a block, you can think of this as "Estimated Time to Payout."
Why is P2Pool Recommended Over Traditional Pools?
P2Pool is peer to peer allowing a decentralized pool mining system. There are many nodes setup around the world that connect to each other too mine together. Many other coins have 1 very large pool that many miners connect to and sometimes the largest pool can have 51% or more of the network hash rate which makes the network vulnerable to a 51% attack. If P2Pool is the largest network then that prevents the Vertcoin network to be susceptible to a 51% attack as P2Pool is decentralized.
PPLNS Payout System
P2Pool uses a PPLNS (Pay Per Last N Shares) payout system which awards miners more the longer they mine, sort of like a loyalty system. A drawback to this system is that part time miners that aren't 24/7 won't be able to earn that much.
While Network 1 is catered towards 24/7 miners and people who have dedicated mining rigs, Vertcoin has a second P2Pool network where part time miners and miners under 100 MH/s can go to mine.
Mines Directly to Your Wallet
P2Pool mines directly to your wallet and cuts out the middleman. This reduces the likely hood that the pool will run away with your coins.
Since P2Pool is decentralized and has different nodes for you to choose from there will be no downtime because the P2Pool network does not die if one node goes down. You can setup a backup server in your miner so that you will have no downtime when mining.
Anonymity and Security
When using P2Pool you use a wallet address making your real identity anonymous, you are simply known by a random 34 letter string. Along with using a wallet address instead of a username there is no password involved P2Pool preventing the possibility of cracking your pool account (If you were on a traditional pool,) and stealing all your coins.
How do I Find a Nearby P2Pool Node
You can find the public p2pool nodes the the P2Pool Node Scanners. If you want to find a network 1 node go here. If you want to find a network 2 node go here.
The quickest way for you to get help is for you to join the Vertcoin Discord Group. We almost always have knowledgable Vertans, whether that be developers or experienced Vertans, online to help you with whatever problems you may have.
How can I donate to the Developers?
You can donate to the dev fund at https://vertcoin.org/donate/. You can select what you want your funds to go to by donating to the corresponding address. You can also see how much funding is required and how much we have donated.
The Vertcoin developers currently have a trello board where you can see the goals and what the status of said goal is. You can also vote on what you want the Vertcoin developers to focus on next.
What is the Status of the AMD Optimized Miner?
The AMD Optimized Miner internal beta is aiming to be ready by the end of September. The AMD Optimized Miner is currently being developed by @turekaj on the Vertcoin Discord. He currently does not have a Reddit account and Discord is the only way you can contact him.
What Does Halving Mean?
Halving means that the block reward for miners will be split in half. Halving happens around every 4 years for Vertcoin or 840,000 blocks. This means around December miners will only receive 25 VTC per block instead of the current 50 VTC per block. If you would like to add another question to this list please comment it and I will get around to adding it ASAP.
Jihan going to F*** us until August to prove a point he can do whatever he wants . Antminer L3+ Was produced in November 2016 https://bitcoinwisdom.com/litecoin/difficulty at that time the whole Litecoin Network was 1,500 Gh/s . From November 2016 till February 2017 Litecoin network increased another 1000 Gh/s to 2,500 Gh/s . Therefore, Jihan must produced around 2000 Antminer L3+ running at 504 Mh/s and He might sold some or all of it . The total of all of the Gh/s Litecoin community has is around 2,300 Gh/s , anything above is in Jihan controlled. Based on the time frame Jihan sales Antminer L3+ , He sales a few for April 15 , May 15 , June 15 but a lot for July 15 and July 15 is still selling . He will always have on hand more Gh/s to block 75% Segwit and also USAF at 51%. People are buying Antminer L3+ like crazy. He collects the money, it won't be refunded (you can't force a refund by wire transfers or Bitcoin transfers) . I think that he will produce around 14,000 Antminer L3+ to bring the whole Litecoin Network to around 10,000 Gh/s by around August with a lot of L3+ ship around July 15. Why 14,000 Antminer L3+ miners because it is give Antminer L3+ owners a little profit. Why July 15 because it going to give him enough time to produce fourteen thousands Antminer L3+ miners. Segwit will happen around August because at that time Jihan won't have the hash rate to block USAF and Litecoin price will go up. Jihan starts producing new Miner Antminer L4 .. to be continue ...
After the ETH/ETC fork we saw the miners split their hashpower proportionally to the market price of that coin. That is indeed what math predicts for a coin split, when the difficulty is "instantaneously" adjusted for each coin so as to keep the number of coins of reward per hour fixed, no matter how much hashpower is mining it. The equilibrium split occurs because, as miners shift their hashpower to the coin that they find more profitable to mine, its profitability (in coins per hash) decreases. Thus, after reaching that equilibrium, a miner who shifts his hashpower either way would see his revenue decrease. However, in the case of bitcoin, the difficulty is adjusted only every two weeks, and even then the change is limited to 4x or 1/4x. Until an adjustment occurs, the number of coins of reward is fixed per GH, not per day. Then it seems that the above equilibrium is not expected to occur. All miners are expected to shift their entire hashpower to the coin that offers the higher dollars per GH. Thus, for example, if the market prices of BTC and BCC just after the fork are $3000 and $500, and the BCC coin has its difficulty artificially lowered at the fork to 1/10 of its then-current value, the same number of hashes that yields 1 BTC ($3000) will yield 10 BCC ($5000), irrespectively of how much hashpower is already mining each coin. Then, all miners are expected to shift to mining BCC. On the other hand, if the same market prices hold but the difficulty is lowered to only 1/5 of the then-current value, then the same amount of hashing that yields $3000 when mining BTC will yield only $2500 when mining BCC. Then all miners will want to stick to BTC. This analysis does not take into account political motivations and longer-range strategies, nor the effect that the shift of hashpower will have on the market price. For instance, in the first scenario, the BTC chain will be dead until the BCC difficulty is readjusted. If BCC uses the same difficulty readjustment algorithm as BTC, it should occur after ~30 hours; and then the same amount of hashing woudl yield only 1/4 as much BCC. Then, for example, if the market prices of BTC and BCC are still about $3000 and $500, the same amount of hashing that yields 1 BTC ($3000) will yield only 2.5 BCC ($1250). Then all miners would shift back to BTC, leaving BCC dead. But if the prices have changed to $2000 and $1000 by then, respectively, then all miners will stay on BCC. Does this make sense?
I have been closely watching the mining scene for only about 3 months, so excuse me if this sort of question is asked frequently, or is too speculative. Is all BTC mining now underwater, with a negative ROI? That's what it looks like to me. I initially got interested years ago, when the return was small and BTC was not worth much. I didn't mine because it seemed like a miniscule return on investment. Oh I wish I had started back then, those "worthless" BTCs would be worth a lot now. But I started getting more interested again when that Ars Technica article on the BFL Jalapeno appeared. Holy crap, a machine that prints free money. He made hundreds of bucks in a week. So I started checking it out. With the delays in BFL's product shipping, all the mining calculators show that any new investment in mining hardware will never break even. Difficulty is increasing so fast, that the only machines making money are already in place, and soon they won't even pay for the cost of electricity. Now just to screw this up even further, BFL did a classic "Osborne Effect" announcement of their new Monarch board. Their existing ASIC machines are obsolete. The new 28nm machine that does not exist yet, is promised to deliver 600Gh for 350 watts, and costs $4680. I ran the numbers through the mining calculator at The Genesis Block. Unfortunately their calculator seems to be down at the moment, but I recall running numbers on a Monarch, delivered even in December, would not break even unless BTC went up to 2000 per dollar! Now even accounting for BFL's broken promises, if I could buy mining hardware like this today and turn it on now, it would make a negative ROI. I run the numbers for every possible hardware I could buy, none of them are as cheap in dollars/Gh or Gh/watt as the Monarch. And none of them break even. I decided to track the existing performance of mining using my dinky Mac mini's GPU. It won't mine much, and GPU mining will never break even in a network full of ASICs. But it would give a rough index of how difficulty is affecting mining. Here's a rough description of my results. At this point, it looks like mining is doubling in difficulty every month. Nobody can make money unless either BTC rises in value dramatically, or the majority of miners give up and unplug their unprofitable mining hardware. So someone tell me if this assessment is realistic or not. At the moment, it looks like any new investment in mining hardware will result in turning every dollar of investment into 50 cents worth of BTC at most. With increasing difficulty, soon even existing mining hardware will be turning every dollar of electricity into less than a dollar worth of BTC. ROI is underwater now for new hardware, and soon will be underwater for all hardware, even advanced ASICs that haven't even shipped yet. There are only two ways that mining might ever make a profit. One is if almost everyone gives up when their miners become unprofitable. The other is if BTC goes up massively in value to like $2500/USD, which will only fuel the arms race even more. Yeah, I know there is a big incentive to spread disinformation to convince people to drop out of mining. So don't try to BS me. Let me hear your honest assessments, or please point me in a direction where I can do research to figure this out.
What is your intended use for this build? The more details the better. I’d like to build a gaming/mining rig. I would like to run 6 graphics cards at one point, might not buy them all outright. So the goal. A gaming computer running the 1070 separately so I can still game and do stuff while the other 5 cards are mining. When im not using the computer, I have the option to put the 1070 to work as well. Is it a stupid idea to combine the two purposes into one super computer? Also, I’m having trouble finding a compatible motherboard and would love suggestions. Finally, I have tried reading on the riser connection info and I’m still not sure. Hopefully those are the correct risers? If gaming, what kind of performance are you looking for? (Screen resolution, framerate, game settings) Nothing too crazy. I have done the research on that side of things and the things selected should make me happy. What is your budget (ballpark is okay)? $2000-3000 (depending on how many gpu’s I buy at onece) In what country are you purchasing your parts? U.S.A (amazon, here is the link my current list. https://www.amazon.com/gp/registry/wishlist/2NAC9YOHISTRI/ref=nav_wishlist_lists_4) Post a draft of your potential build here (specific parts please). Consider formatting your parts list. Don't ask to be spoonfed a build (read the rules!). CPU: AMD Ryzen 5 1600 Processor with Wraith Spire Cooler Motherboard: Im not sure! Memory: Corsair - Vengeance LPX 16GB (2 x 8GB) DDR4-3000 Storage: Samsung 850 EVO 250GB 2.5-Inch SATA III Internal SSD (MZ-75E250B/AM) WD Blue 1TB SATA 6 Gb/s 7200 RPM 64MB Cache 3.5 Inch Desktop Hard Drive (WD10EZEX) Case: Aluminum Stackable Mining Case Rig Open Air Frame For ETH/ETC/ ZCash (Black) Power Supply: (2) EVGA SuperNOVA 750 G2, 80+ GOLD 750W, Fully Modular, EVGA ECO Mode Graphics Cards: (5) XFX Rs XXX Edition Rx 570 4GB OC+ 1284Mhz DDR5 3xDP HDMI DVI Graphic Cards RX-570P4DFD6 (1) EVGA GeForce GTX 1070 SC GAMING ACX 3.0 Black Edition, 8GB GDDR5, LED, DX12 OSD Support (PXOC) 08G-P4-5173-KR GPU Risers: 6-Pack VICTONY PCI-E 16x to 1x GPU Riser Adapter 60cm USB 3.0 Riser Flexible Extension Cable & MOLEX to SATA Power Cable,Powered Riser Adapter Card with LED Indicator Would it also be possible to run a "Antminer S7 ~4.73TH/s @ .25W/GH 28nm ASIC Bitcoin Miner" on this set up if I increased the power suply? I think it looks decent? But I’m happy to hear advice/suggestions. Thanks so much!
https://hashflare.io/3724EA75 (founded 2013): Contracts (One-year contracts): SHA-256: 1.5$ for 10 GH/s -> 150$ 1TH/s -> 1950$ 13TH/s (Yet 1950$ is only 1-year rental whereas your rig will stay yours forever) Fees: 0.0035 USD per every 10 GH/s (currently approx. 30% of daily earnings) ->Hashflare Profit: 3.79$-1.5$(Hardware)-1.2775$(Maintenance)=1.01$/year per 10 GH/s -> 1313$/year per 13 TH/s SHA-256 (real S9 Miner): 2000$ 13TH/s (cf. Hashflare 1950$) Fees: 0.003$ USD per every 10 GH/s (currently approx. 25% of daily earnings) ->S9 mining rig(1400w with 0.1$ Cost pet KW/h) Profit: 3.79$-1.53$(Hardware)-1.095$(Maintenance)=1.16$/year per 10 GH/s -> 1508$/year per 13 TH/s (cf. Hashflare 1313$) But keep in mind that you can sell your hardware at any time as it stays yours forever (not 1-Year Contract) Profit w/o hardware: 3.79$-1.095$(Maintenance)=2.7$/year per 10 GH/s -> 3510$/year per 13 TH/s *As you pay only for the hardware, you have to pay for the maintenance fees in both cases. Conclusion: If you decide to buy your own hardware it will will stay yours forever. Nevertheless, keep in mind that you need a storage place for your mining rig and have to deal with the noise, so it should not be turned on 24/7 in your apartment. Scrypt: 7.5$ for 1 MH/s -> 3750$ for 500 MH/s Fees: 0.01$ per every 1 MH/s (currently approx. 62% of daily earnings) ->(cf. real miner only 15%) Profit: 9.54$-7.5$(Hardware)-5$(Maintenance)=-2.96$/year per 1 MH/s -> -1480$/year per 500 MH/s) Scrypt(real L3+ Miner): 5$ for 1 MH/s -> 2500$ for 500 MH/s Fees: 0.0038$ per every 1 MH/s (currently approx. 15% of daily earnings) ->L3+ mining rig (800w with 0.1$ Cost pet KW/h) Profit: 9.54$-5$(Hardware)-1.387$(Maintenance)=3.153$/year per 1 MH/s -> 1576$/year per 500 MH/s But keep in mind that you can sell your hardware at any time as it stays yours forever (not 1-Year Contract) Profit w/o hardware: 9.54$-1.387$(Maintenance)=8.153$/year per 1 MH/s -> 4076.5$/year per 500 MH/s Conclusion: At this point I strongly advise not to buy any Scrypt contracts on Hashflare since you will end up losing money by doing so unless LTC suddenly skyrockets. As other Hashflare contracts (Zero-fee contracts) are not profitable in my opinion, I will only briefly summarize the results: ETHASH: 2.2$ for 100 KH/s -> 220$ for 10 MH/s -> yields approx. 153$/year (0.51ETH), thus you will lose 67$ unless ETH goes magically up X11: 3.2$ for 1 MH/s -> 320$ for 100 MH/s -> yields approx. 60$/year (0.2 DASH), thus you will lose 260$ unless DASH goes magically up EQUIHASH: 2$ for 1 H/s -> 200$ for 100 H/s -> yields approx. 127$/year (0.54 ZEC), thus you will lose 73$ unless ZEC goes magically up To sum it up, of course you can try your luck and hope that one of the altcoins will skyrocket to the moon and then you will make some money by joining these contracts. Nevertheless, you could also simply buy the following altcoin and make some money by simply holding the altcoin currency on an exchange. So as far as I am concerned, the only reasonable contract in Hashflare at the moment is the SHA-256 Contract. https://www.eobot.com/new.aspx?referid=261758 (founded 2013): Eobot offers several contracts like Cloud Folding, SETI, Scrypt etc. Though they are not very profitable and thus I dont want to discuss them in detail. The only reasonable contract would be the SHA-256 5-Year Rental: 6.8$ for 10 GH/s (cf. Hashflare only 1.5$) but also keep in mind that it is a 5 Year Contract and not one year contract(cf. 1.5$*5=7.5$ for 5-Year Hashflare SHA-256). SHA-256 5-Year Rental: 6.8$ for 10 GH/s Fees: 0.0021$ per every 10 GH/s (cf. Hashflare 0.0035$) Profit: 3.79$-(6.8$/5=1.36$)-0.77$(Maintenance)=1.66$/year per 10 GH/s -> 2158$/year per 13 TH/s (cf. Hashflare 1313$) https://www.hashnest.com/(founded 2013): Hashnest belongs to BitMain(world's foremost producer of ASIC bitcoin mining hardware) and offers you different cloud mining possibilities. What is interesting about this site is the fact that you can buy other people´s cloud mining power vice versa (can sell it back at any time) on the Market. It is very beginner-friendly since they have the possibility to start with as little as 8000 Satoshi and buy 1 GH/s. Yet keep in mind that the withdrawal fee is 20.000 Satoshi, so you should invest at least 40.000 Satoshi in order to make some money after the withdrawal fees are deducted. Contracts (lifetime): AntL3+: 7$ for 1 MH/s -> 3500$ for 500 MH/s (cf. L3+ mining rig discussed above) Fees: 0.0027$ USD per every 1 MH/s (currently approx. 10% of daily earnings) Profit: 9.57$-7$(Hardware)-0.98$(Maintenance)=1.59$/year per 1MH/s -> 795$/year per 500 MH/s (cf. Hashflare - 1480$) But keep in mind that you can sell your hardware at any time and it is a lifetime contract so it stays yours forever (no 1-Year Contract) Profit w/o hardware: 9.57$-0.98$(Maintenance)=8.59$/year per 1MH/s -> 4295$/year per 500 MH/s AntS9: 3.51$ for 10 GH/s -> 351$ 1TH/s -> 4563$ 13TH/s (cf. Hashflare 1950$) Fees: 0.0019$ USD per every 10 GH/s (currently approx. 18.5% of daily earnings) Profit: 3.79$-3.51$(Hardware)-0.69$(Maintenance)=-0.4$/year per 10 GH/s -> -533$/year per 13 TH/s But keep in mind that you can sell your hardware at any time and it is a lifetime contract so it stays yours forever (no 1-Year Contract) Profit w/o hardware: 3.79$-0.69$(Maintenance)=3.1$/year per 10 GH/s -> 4300 $/year per 13 TH/s (cf. Hashflare 1313$) AntS7: 2.45$ for 10 GH/s -> 245$ 1TH/s -> 3185$ 13TH/s (cf. Hashflare 1950$) Fees: 0.0041$ USD per every 10 GH/s (currently approx. 40% of daily earnings) Profit: 3.79$-2.45$(Hardware)-1.49$(Maintenance)=-0.15$/year per 10 GH/s -> -195$/year per 13 TH/s But keep in mind that you can sell your hardware at any time and it is a lifetime contract so it stays yours forever Profit w/o hardware: 3.79$-1.49$(Maintenance)=2.3$/year per 10 GH/s -> 2990$/year per 13 TH/s https://www.genesis-mining.com/a/1671951: (founded 2014; discussing only small contracts, bigger contracts cheeper) BTC (Lifetime contract): 1.5$ for 10 GH/s -> 30$ for 200 GH/s -> 150$ for 1TH/s -> 1950$ for 13 TH/s Fees: 0.0028$ per every 10 GH/s (currently approx. 29% of daily earnings) Profit: 3.79$-1.5$(Hardware)-1.02$(Maintenance)=1.27$/year per 10 GH/s -> 1651$/year per 13 TH/s (cf. Hashflare 1313$) But keep in mind that it is a lifetime contract so the hardware stays yours as long as profitable Profit w/o hardware: 3.79$-1.02$(Maintenance)=2.77$/year per 10 GH/s -> 3601$/year per 13 TH/s Contracts (2 years w/o fees) ETH: 30$ for 1 MH/s -> 300$ for 10 MH/s Profit: 15.31$*2-30$(Hardware)= 0.62$/2 years per 1 MH/s -> 6.2$/2 years per 10 MH/s LTC: 14$ for 1 MH/s -> 28$ for 2 MH/s -> 140$ for 10 MH/s Profit: 9.57$*2-14$(Hardware)= 5.14$/2 years per 1 MH/s -> 51.4$/2 years per 10 MH/s ZCASH: 48$ for 25H/s Profit: 31.78$*2-48$(Hardware)= 13.56$/2 years per 25H/s MONERO: 50$ for 60H/s Profit: 32.58$*2-50$(Hardware)= 15.16$/2 years per 60H/s DASH: 6$ for 1 MH/s -> 30$ for 5 MH/s -> 60$ for 10 MH/s Profit: 0.59$*2-6$(Hardware)= -4.82$/2 years per 1 MH/s -> -48.2$/2 years per 10 MH/s Best contracts at the moment: Genesis Mining: SHA-256-> 1651$/year per 13 TH/s Hashflare: SHA-256 -> 1313$/year per 13 TH/s Eobot: SHA-256 -> 2158$/year per 13 TH/s (*buying a 5yr contract, thus the outcome may be quite unpredictable!) Hashnest: L3+ -> 795$/year per 500 MH/s This review should not be taken as financial advice, merely an analysis of current options. Since cryptocurrencies are highly volatile, cloud mining as well as mining in general involve certain risks e.g. difficulty increase, price drops etc. If you have any additional information or questions feel free to comment and I will try to answer as soon as possible :)