Bitcoin-Mining-Profit-Rechner in BTC & Euro bitcoinMag.de

Post Bitcoin, my country is a heaven for Haswell-based PC gaming

Just want to share this "phenomenon" I've noticed for quite sometime. When my brother's mainboard failed, we thought of selling whatever that's left and upgrade to Ryzen. But it would never hurt to do another check, so I went on my wife's favourite online shopping platform to search for one. And voila, I found a B85 mainboard for ~$40.
Their recommendation engine quickly kicked in. To my surprise, "8GB DDR3" is one of the most popular search keywords. This means a lot of people were looking for them, so Haswell builds must be popular. I know mine is still running well.
So I decided to calculate the cost for a whole Haswell-based build, and this is what it cost to have an extremely decent gaming machine:
Total, minus HDD/SDD, monitor or mouse/kb: $275
There are, of course, a lot of risks:

And yes this build ins't going to win any speed contest, and the RX580 most likely gets bottlenecked by the CPU... But the beauty of this is, for $275, people can get a PC that can play pretty much ALL the AAA titles decently without breaking the bank. On my PC with similar configuration, I often get ~70-80fps out of TD1 and BF1. Even at Ultra in BF1, in smaller maps, I can still get ~60fps.
This is something I don't think has ever happened. I don't recall being able to play AAA games on a $275 build. Thank you, Bitcoin crash.
Edit: I just checked again and the price of the GPU went up, the cheapest RX 580 8GB now goes for ~$75. However $50 can still net you a RX 570 4GB, in this build the difference isn’t quite noticeable
submitted by EgoDivinus to buildapc [link] [comments]

White Paper, Miner, Pizza … | "Old Objects" in the Cryptocurrency Museum

White Paper, Miner, Pizza … |
https://preview.redd.it/giu1ssilga151.jpg?width=900&format=pjpg&auto=webp&s=41510785ccdc0d99544ec74229f62427d1c0ce3e
Museum has played the role of a time recorder. Talking about bitcoin, more than ten years has passed since the creation of it. Although it is uncomparable to the stock market with a hundred years of history, during the ten years, in the different stages of the development of bitcoin and blockchain have continuously poured in geeks, miners, speculators, newbies, leaving keywords such as sudden rich, myth, scam, belief, revolution, etc.
There are also many “old objects” with stories in the “Museum” of the cryptocurrency realm. On Museum Day, let ’s review the stories brought by these “old objects”.
The First Digital Currency White Paper — Bitcoin White Paper
On Oct. 31, 2008, Satoshi Nakamoto released the Bitcoin white paper — A Peer-to-Peer Electronic Cash System in the cryptographic mail group where he belongs, and Bitcoin was born since then.
A white paper is a document that explains the purpose and technology used in cryptocurrency. Usually a cryptocurrency uses the white paper to help people understand what it provides, and it is also an important information channel for investors to understand a project. Therefore, the level of the white paper affects people’s confidence towards the coin.
In a word, in the cryptocurrency and blockchain industry, the value of a white paper is equivalent to that of a standard financing speech. The white paper plays a vital role in this emerging market.
The First Public Bitcoin-Physical Transaction — Pizza
Since Satoshi Nakamoto mined the Bitcoin genesis block on January 3, 2009, Bitcoin has only been spread among the small crowd and has not realized its value.
Not until May 22, 2010, Bitcoin enthusiast “Laszlo Hanyecz” bought a pizza coupon worth $25 with 10,000 bitcoins. This is the first public bitcoin-physical transaction. Bitcoin has its price with 0.3 cents per bitcoin.


This day has also become the famous “Bitcoin Pizza Day” in Bitcoin history. Bitcoin as the imagination of the financial system has more practical significance. The tenth anniversary is coming. How will you commemorate it? Will you buy a pizza?
The First Digital Asset Exchange — Bitcoinmarket.com
After the birth of Bitcoin, in addition to mining, the only way to get Bitcoin in the early days was to conduct transactions on forums or IRC (commonly known as Internet Relay Chat). However, this method involves both long transaction time and great security risk.
In March 2010, the first digital asset exchange — Bitcoinmarket.com launched. However, due to lack of liquidity and transaction depth, it disappeared soon after its establishment, but Bitcoinmarket.com opened the era of the operation of the cryptocurrency realm exchange 1.0.


On June 9, 2011, China’s first Bitcoin exchange — Bitcoin China (BTCChina) launched. Its founder, Yang Linke, translated Bitcoin into Chinese “比特币” for the first time. In 2013, China’s bitcoin trading entered the golden age, and exchanges sprung up. China monopolized more than 90% of the world’s bitcoin transactions. Now, if the top three exchanges Binance, Huobi Global, OKEx are the Exchange 2.0, then the index exchange represented by 58COIN called the 3.0 version, leading the trend.
The First Generation of High-Performance Miner — ASIC Miner
When Satoshi Nakamoto created Bitcoin, the only way to get it is to use computers (including home computers) to mine, mainly relying on the CPU to calculate. However, as the value of digital currencies such as Bitcoin has become higher and higher, mining has become an industry with the competition is getting fiercer, accompanied by increasing difficulty of mining. Therefore, hardware performance competition starts.
In July 2012, the genius Jiang Xinyu (Internet nickname is “Friedcat”) from the junior class of the University of Science and Technology declared at the forum that he could make ASIC miners (chips). As far as mining computing power is concerned, ASICs can be tens of thousands or more higher than the same-generation CPUs and GPUs.
At the beginning of 2013, Zhang Nanqian (Pumpkin Zhang), a suspended doctoral student from the Beijing University of Aeronautics and Astronautics, developed the ASIC miner and named it “Avalon”.


In June 2013, the Friedcat’s miner USB was finally released, and it maintained 20% of the computing power of the entire network.
At the end of 2013, Wu Jihan, used the tens of millions yuan earned from Friedcat through investment, worked together with Jenke group, to develop the Antminer S1. Since then, the miner manufacturer Bitmain began to enter the stage of history.
It is no exaggeration to say that Friedcat and Zhang Nangeng have opened the domestic “mining” era.
The Birthplace of China’s Bitcoin — Garage Coffee
It is not only the “old objects” that record history, but also a place that everyone in the cryptocurrency realm aspires to.
Guo Hongcai once said, “Without no The Garage Café, there will be no cryptocurrency realm today. Since it is a very mysterious place that all waves of people from the café joint together to create today’s digital asset industry.

▲ In March 2013, American student Jake Smith successfully purchased a cup of coffee at The Garage Café with 0.131 bitcoins. This move attracted the attention of CCTV, and it conducted an interview.
Indeed, The Garage Café is the world ’s first entrepreneurial-themed coffee shop. It has been legendary since its establishment in 2011. The Garage Cafét is not only the core coordinate on China’s Bitcoin map, but also the birthplace of the Chinese cryptocurrency circle, where digital asset realm tycoons including Guo Hongcai, Zhao Dong, Li Xiaolai, Li Lin have made their ways.
The development of digital currency is only 11 years old. Through these “old objects”, we review the various stories of this wave of technology together, hoping to help you understand the development process of the digital currency field. Meanwhile, I also remind all practitioners to use history as a mirror and forge ahead.
Website: https://www.58ex.com/
Twitter: https://twitter.com/58_coin
Facebook: https://www.facebook.com/coin.58COIN
Telegram: https://t.me/official58
Medium: https://medium.com/@58coin_blog/
submitted by 58CoinExchange to u/58CoinExchange [link] [comments]

Is mining feasible to generate bitcoins in background while I use my system for my main tasks?

I just want to make enough to make tips on reddit or maybe buy gold once a year. I am completely new to this. Also is there any newbie guide? What do I need to get started? I think my system is not ancient, but it's not state of the art either. I don't mean to make a living or heck even a profit, just want to know if I can mine in the background (minimised or something) while I use my computer for everyday tasks, most of my CPU time goes idle. This way I would atleast put it to some use. Now I am not even sure if my question sounds stupid or anything, so my apologies in advance.
submitted by achshar to BitcoinMining [link] [comments]

What is Cryptocurrency Mining?

There are various ways of gaining cryptocurrencies and one major way is through cryptocurrency mining. So, Cryptofactsbc will help you understand what is cryptocurrency Mining and how to mine these cryptos. There is nothing to worry about because we will give you everything you need to know about cryptocurrency mining and suggest some steps to follow if you want to mine cryptocurrencies. Let us dig into our topic for the day, What is cryptocurrency Mining?

Understanding Mining

When we take Gold Mining for example miners go into pits to dig for Gold, others use machines one the surface on the lands to detect possible places where Gold will be located.. They find and wash the gold and refine it and get it ready to be sold. That is how Gold mining is done in the real world but when we come to the crypto world it is slightly different. For our fiat currency, the government decides the quantity to be printed and when to print and circulate them because it is centralised.

Cryptocurrency Mining

Cryptocurrency Mining is the process where by verified transactions are added to a ledger which is known as Blockchain. Crypto coins are decentralized therefore no authority or government persons can order for the circulation of cryptos. Mining Cryptocoins is an arms race that rewards early adopters. Anyone can participate in mining provided they have the necessary materials to start.
I am pretty sure you have heard pf Bitcoins, the first decentralised cryptocurrency that was released in early 2009. Similar digital currencies have crept into the world-wide market since then, including a spin-off from Bitcoin called Bitcoin Cash. You can get in on the cryptocurrency rush if you take the time to learn the basics properly.

Methods of Cryptocurrency Mining

There are various ways of mining and we will look a few methods; Cloud Mining Basically these are some of the cryptocurrencies that can be mined, Bitcoin, Ethereum, Ripple, Thether, Bitcoin Cash and others. The main cryptocurrency we will talk about it’s mining is Bitcoin. Cloud Mining is process whereby miners pay money to rent some hardware from a host company. A company owns bitcoin hardware and then gives them out on rent so miners in-turn rent part of these bitcoin hardware and utilize them remotely.

CPU Mining

The use of Central Processing Unit of your computer, which is the brain of your computer was the very first method people adopted for mining bitcoins when bitcoins were first launched in the year 2009. Back then the mining difficulty was very low so just your CPU could help your gain some huge fractions of Bitcoins. But as stuff were advancing the mining difficulty increase and became higher so people started to look for something better and higher than a normal CPU.

GPU Mining

When technology was advancing, Graphics Processing Units were created. They are programmable electronic chip or circuit that helps the computer to solve complex problems. Most Especially for gamer to be to install games with high graphics requirements on the computer. GPU become very popular therefore people began to use them to mine for bitcoins and amazingly the mining power of 1 GPU equals about 30 CPUs. So, in order for you to gain higher fractions of bitcoins as mine you need to upgrade whiles the system also advances.

FPGA Mining

Another invention came into the system to out smart the GPU mining which was the FPGA. It is an integrated circuit that also helps the computer to carry out a set of calculations. It is almost 10- 100 times better and faster than GPU mining.

ASIC Mining

The full meaning of ASIC is Application Specific Integrated Circuit and it was a breed of miner that was introduced in the year 2019. The sole purpose of this ASIC was to mine bitcoins so you can imagine how fast it would be.
submitted by cryptofactsbc to u/cryptofactsbc [link] [comments]

Transcript of discussion between an ASIC designer and several proof-of-work designers from #monero-pow channel on Freenode this morning

[08:07:01] lukminer contains precompiled cn/r math sequences for some blocks: https://lukminer.org/2019/03/09/oh-kay-v4r-here-we-come/
[08:07:11] try that with RandomX :P
[08:09:00] tevador: are you ready for some RandomX feedback? it looks like the CNv4 is slowly stabilizing, hashrate comes down...
[08:09:07] how does it even make sense to precompile it?
[08:09:14] mine 1% faster for 2 minutes?
[08:09:35] naturally we think the entire asic-resistance strategy is doomed to fail :) but that's a high-level thing, who knows. people may think it's great.
[08:09:49] about RandomX: looks like the cache size was chosen to make it GPU-hard
[08:09:56] looking forward to more docs
[08:11:38] after initial skimming, I would think it's possible to make a 10x asic for RandomX. But at least for us, we will only make an ASIC if there is not a total ASIC hostility there in the first place. That's better for the secret miners then.
[08:13:12] What I propose is this: we are working on an Ethash ASIC right now, and once we have that working, we would invite tevador or whoever wants to come to HK/Shenzhen and we walk you guys through how we would make a RandomX ASIC. You can then process this input in any way you like. Something like that.
[08:13:49] unless asics (or other accelerators) re-emerge on XMR faster than expected, it looks like there is a little bit of time before RandomX rollout
[08:14:22] 10x in what measure? $/hash or watt/hash?
[08:14:46] watt/hash
[08:15:19] so you can make 10 times more efficient double precisio FPU?
[08:16:02] like I said let's try to be productive. You are having me here, let's work together!
[08:16:15] continue with RandomX, publish more docs. that's always helpful.
[08:16:37] I'm trying to understand how it's possible at all. Why AMD/Intel are so inefficient at running FP calculations?
[08:18:05] midipoet ([email protected]/web/irccloud.com/x-vszshqqxwybvtsjm) has joined #monero-pow
[08:18:17] hardware development works the other way round. We start with 1) math then 2) optimization priority 3) hw/sw boundary 4) IP selection 5) physical implementation
[08:22:32] This still doesn't explain at which point you get 10x
[08:23:07] Weren't you the ones claiming "We can accelerate ProgPoW by a factor of 3x to 8x." ? I find it hard to believe too.
[08:30:20] sure
[08:30:26] so my idea: first we finish our current chip
[08:30:35] from simulation to silicon :)
[08:30:40] we love this stuff... we do it anyway
[08:30:59] now we have a communication channel, and we don't call each other names immediately anymore: big progress!
[08:31:06] you know, we russians have a saying "it was smooth on paper, but they forgot about ravines"
[08:31:12] So I need a bit more details
[08:31:16] ha ha. good!
[08:31:31] that's why I want to avoid to just make claims
[08:31:34] let's work
[08:31:40] RandomX comes in Sep/Oct, right?
[08:31:45] Maybe
[08:32:20] We need to audit it first
[08:32:31] ok
[08:32:59] we don't make chips to prove sw devs that their assumptions about hardware are wrong. especially not if these guys then promptly hardfork and move to the next wrong assumption :)
[08:33:10] from the outside, this only means that hw & sw are devaluing each other
[08:33:24] neither of us should do this
[08:33:47] we are making chips that can hopefully accelerate more crypto ops in the future
[08:33:52] signing, verifying, proving, etc.
[08:34:02] PoW is just a feature like others
[08:34:18] sech1: is it easy for you to come to Hong Kong? (visa-wise)
[08:34:20] or difficult?
[08:34:33] or are you there sometimes?
[08:34:41] It's kind of far away
[08:35:13] we are looking forward to more RandomX docs. that's the first step.
[08:35:31] I want to avoid that we have some meme "Linzhi says they can accelerate XYZ by factor x" .... "ha ha ha"
[08:35:37] right? we don't want that :)
[08:35:39] doc is almost finished
[08:35:40] What docs do you need? It's described pretty good
[08:35:41] so I better say nothing now
[08:35:50] we focus on our Ethash chip
[08:36:05] then based on that, we are happy to walk interested people through the design and what else it can do
[08:36:22] that's a better approach from my view than making claims that are laughed away (rightfully so, because no silicon...)
[08:36:37] ethash ASIC is basically a glorified memory controller
[08:36:39] sech1: tevador said something more is coming (he just did it again)
[08:37:03] yes, some parts of RandomX are not described well
[08:37:10] like dataset access logic
[08:37:37] RandomX looks like progpow for CPU
[08:37:54] yes
[08:38:03] it is designed to reflect CPU
[08:38:34] so any ASIC for it = CPU in essence
[08:39:04] of course there are still some things in regular CPU that can be thrown away for RandomX
[08:40:20] uncore parts are not used, but those will use very little power
[08:40:37] except for memory controller
[08:41:09] I'm just surprised sometimes, ok? let me ask: have you designed or taped out an asic before? isn't it risky to make assumptions about things that are largely unknown?
[08:41:23] I would worry
[08:41:31] that I get something wrong...
[08:41:44] but I also worry like crazy that CNv4 will blow up, where you guys seem to be relaxed
[08:42:06] I didn't want to bring up anything RandomX because CNv4 is such a nailbiter... :)
[08:42:15] how do you guys know you don't have asics in a week or two?
[08:42:38] we don't have experience with ASIC design, but RandomX is simply designed to exactly fit CPU capabilities, which is the best you can do anyways
[08:43:09] similar as ProgPoW did with GPUs
[08:43:14] some people say they want to do asic-resistance only until the vast majority of coins has been issued
[08:43:21] that's at least reasonable
[08:43:43] yeah but progpow totally will not work as advertised :)
[08:44:08] yeah, I've seen that comment about progpow a few times already
[08:44:11] which is no surprise if you know it's just a random sales story to sell a few more GPUs
[08:44:13] RandomX is not permanent, we are expecting to switch to ASIC friendly in a few years if possible
[08:44:18] yes
[08:44:21] that makes sense
[08:44:40] linzhi-sonia: how so? will it break or will it be asic-able with decent performance gains?
[08:44:41] are you happy with CNv4 so far?
[08:45:10] ah, long story. progpow is a masterpiece of deception, let's not get into it here.
[08:45:21] if you know chip marketing it makes more sense
[08:45:24] linzhi-sonia: So far? lol! a bit early to tell, don't you think?
[08:45:35] the diff is coming down
[08:45:41] first few hours looked scary
[08:45:43] I remain skeptical: I only see ASICs being reasonable if they are already as ubiquitous as smartphones
[08:45:46] yes, so far so good
[08:46:01] we kbew the diff would not come down ubtil affter block 75
[08:46:10] yes
[08:46:22] but first few hours it looks like only 5% hashrate left
[08:46:27] looked
[08:46:29] now it's better
[08:46:51] the next worry is: when will "unexplainable" hashrate come back?
[08:47:00] you hope 2-3 months? more?
[08:47:05] so give it another couple of days. will probably overshoot to the downside, and then rise a bit as miners get updated and return
[08:47:22] 3 months minimum turnaround, yes
[08:47:28] nah
[08:47:36] don't underestimate asicmakers :)
[08:47:54] you guys don't get #1 priority on chip fabs
[08:47:56] 3 months = 90 days. do you know what is happening in those 90 days exactly? I'm pretty sure you don't. same thing as before.
[08:48:13] we don't do any secret chips btw
[08:48:21] 3 months assumes they had a complete design ready to go, and added the last minute change in 1 day
[08:48:24] do you know who is behind the hashrate that is now bricked?
[08:48:27] innosilicon?
[08:48:34] hyc: no no, and no. :)
[08:48:44] hyc: have you designed or taped out a chip before?
[08:48:51] yes, many years ago
[08:49:10] then you should know that 90 days is not a fixed number
[08:49:35] sure, but like I said, other makers have greater demand
[08:49:35] especially not if you can prepare, if you just have to modify something, or you have more programmability in the chip than some people assume
[08:50:07] we are chipmakers, we would never dare to do what you guys are doing with CNv4 :) but maybe that just means you are cooler!
[08:50:07] and yes, programmability makes some aspect of turnaround easier
[08:50:10] all fine
[08:50:10] I hope it works!
[08:50:28] do you know who is behind the hashrate that is now bricked?
[08:50:29] inno?
[08:50:41] we suspect so, but have no evidence
[08:50:44] maybe we can try to find them, but we cannot spend too much time on this
[08:50:53] it's probably not so much of a secret
[08:51:01] why should it be, right?
[08:51:10] devs want this cat-and-mouse game? devs get it...
[08:51:35] there was one leak saying it's innosilicon
[08:51:36] so you think 3 months, ok
[08:51:43] inno is cool
[08:51:46] good team
[08:51:49] IP design house
[08:51:54] in Wuhan
[08:52:06] they send their people to conferences with fake biz cards :)
[08:52:19] pretending to be other companies?
[08:52:26] sure
[08:52:28] ha ha
[08:52:39] so when we see them, we look at whatever card they carry and laugh :)
[08:52:52] they are perfectly suited for secret mining games
[08:52:59] they made at most $6 million in 2 months of mining, so I wonder if it was worth it
[08:53:10] yeah. no way to know
[08:53:15] but it's good that you calculate!
[08:53:24] this is all about cost/benefit
[08:53:25] then you also understand - imagine the value of XMR goes up 5x, 10x
[08:53:34] that whole "asic resistance" thing will come down like a house of cards
[08:53:41] I would imagine they sell immediately
[08:53:53] the investor may fully understand the risk
[08:53:57] the buyer
[08:54:13] it's not healthy, but that's another discussion
[08:54:23] so mid-June
[08:54:27] let's see
[08:54:49] I would be susprised if CNv4 ASICs show up at all
[08:54:56] surprised*
[08:54:56] why?
[08:55:05] is only an economic question
[08:55:12] yeah should be interesting. FPGAs will be near their limits as well
[08:55:16] unless XMR goes up a lot
[08:55:19] no, not *only*. it's also a technology question
[08:55:44] you believe CNv4 is "asic resistant"? which feature?
[08:55:53] it's not
[08:55:59] cnv4 = Rabdomx ?
[08:56:03] no
[08:56:07] cnv4=cryptinight/r
[08:56:11] ah
[08:56:18] CNv4 is the one we have now, I think
[08:56:21] since yesterday
[08:56:30] it's plenty enough resistant for current XMR price
[08:56:45] that may be, yes!
[08:56:55] I look at daily payouts. XMR = ca. 100k USD / day
[08:57:03] it can hold until October, but it's not asic resistant
[08:57:23] well, last 24h only 22,442 USD :)
[08:57:32] I think 80 h/s per watt ASICs are possible for CNv4
[08:57:38] linzhi-sonia where do you produce your chips? TSMC?
[08:57:44] I'm cruious how you would expect to build a randomX ASIC that outperforms ARM cores for efficiency, or Intel cores for raw speed
[08:57:48] curious
[08:58:01] yes, tsmc
[08:58:21] Our team did the world's first bitcoin asic, Avalon
[08:58:25] and upcoming 2nd gen Ryzens (64-core EPYC) will be a blast at RandomX
[08:58:28] designed and manufactured
[08:58:53] still being marketed?
[08:59:03] linzhi-sonia: do you understand what xmr wants to achieve, community-wise?
[08:59:14] Avalon? as part of Canaan Creative, yes I think so.
[08:59:25] there's not much interesting oing on in SHA256
[08:59:29] Inge-: I would think so, but please speak
[08:59:32] hyc: yes
[09:00:28] linzhi-sonia: i am curious to hear your thoughts. I am fairly new to this space myself...
[09:00:51] oh
[09:00:56] we are grandpas, and grandmas
[09:01:36] yet I have no problem understanding why ASICS are currently reviled.
[09:01:48] xmr's main differentiators to, let's say btc, are anonymity and fungibility
[09:01:58] I find the client terribly slow btw
[09:02:21] and I think the asic-forking since last may is wrong, doesn't create value and doesn't help with the project objectives
[09:02:25] which "the client" ?
[09:02:52] Monero GUI client maybe
[09:03:12] MacOS, yes
[09:03:28] What exactly is slow?
[09:03:30] linzhi-sonia: I run my own node, and use the CLI and Monerujo. Have not had issues.
[09:03:49] staying in sync
[09:03:49] linzhi-sonia: decentralization is also a key principle
[09:03:56] one that Bitcoin has failed to maintain
[09:04:39] hmm
[09:05:00] looks fairly decentralized to me. decentralization is the result of 3 goals imo: resilient, trustless, permissionless
[09:05:28] don't ask a hardware maker about physical decentralization. that's too ideological. we focus on logical decentralization.
[09:06:11] physical decentralization is important. with bulk of bitnoin mining centered on Chinese hydroelectric dams
[09:06:19] have you thought about including block data in the PoW?
[09:06:41] yes, of course.
[09:07:39] is that already in an algo?
[09:08:10] hyc: about "centered on chinese hydro" - what is your source? the best paper I know is this: https://coinshares.co.uk/wp-content/uploads/2018/11/Mining-Whitepaper-Final.pdf
[09:09:01] linzhi-sonia: do you mine on your ASICs before you sell them?
[09:09:13] besides testing of course
[09:09:45] that paper puts Chinese btc miners at 60% max
[09:10:05] tevador: I think everybody learned that that is not healthy long-term!
[09:10:16] because it gives the chipmaker a cost advantage over its own customers
[09:10:33] and cost advantage leads to centralization (physical and logical)
[09:10:51] you guys should know who finances progpow and why :)
[09:11:05] but let's not get into this, ha ha. want to keep the channel civilized. right OhGodAGirl ? :)
[09:11:34] tevador: so the answer is no! 100% and definitely no
[09:11:54] that "self-mining" disease was one of the problems we have now with asics, and their bad reputation (rightfully so)
[09:13:08] I plan to write a nice short 2-page paper or so on our chip design process. maybe it's interesting to some people here.
[09:13:15] basically the 5 steps I mentioned before, from math to physical
[09:13:32] linzhi-sonia: the paper you linked puts 48% of bitcoin mining in Sichuan. the total in China is much more than 60%
[09:13:38] need to run it by a few people to fix bugs, will post it here when published
[09:14:06] hyc: ok! I am just sharing the "best" document I know today. it definitely may be wrong and there may be a better one now.
[09:14:18] hyc: if you see some reports, please share
[09:14:51] hey I am really curious about this: where is a PoW algo that puts block data into the PoW?
[09:15:02] the previous paper I read is from here http://hackingdistributed.com/2018/01/15/decentralization-bitcoin-ethereum/
[09:15:38] hyc: you said that already exists? (block data in PoW)
[09:15:45] it would make verification harder
[09:15:49] linzhi-sonia: https://the-eye.eu/public/Books/campdivision.com/PDF/Computers%20General/Privacy/bitcoin/meh/hashimoto.pdf
[09:15:51] but for chips it would be interesting
[09:15:52] we discussed the possibility about a year ago https://www.reddit.com/Monero/comments/8bshrx/what_we_need_to_know_about_proof_of_work_pow/
[09:16:05] oh good links! thanks! need to read...
[09:16:06] I think that paper by dryja was original
[09:17:53] since we have a nice flow - second question I'm very curious about: has anyone thought about in-protocol rewards for other functions?
[09:18:55] we've discussed micropayments for wallets to use remote nodes
[09:18:55] you know there is a lot of work in other coins about STARK provers, zero-knowledge, etc. many of those things very compute intense, or need to be outsourced to a service (zether). For chipmakers, in-protocol rewards create an economic incentive to accelerate those things.
[09:19:50] whenever there is an in-protocol reward, you may get the power of ASICs doing something you actually want to happen
[09:19:52] it would be nice if there was some economic reward for running a fullnode, but no one has come up with much more than that afaik
[09:19:54] instead of fighting them off
[09:20:29] you need to use asics, not fight them. that's an obvious thing to say for an asicmaker...
[09:20:41] in-protocol rewards can be very powerful
[09:20:50] like I said before - unless the ASICs are so useful they're embedded in every smartphone, I dont see them being a positive for decentralization
[09:21:17] if they're a separate product, the average consumer is not going to buy them
[09:21:20] now I was talking about speedup of verifying, signing, proving, etc.
[09:21:23] they won't even know what they are
[09:22:07] if anybody wants to talk about or design in-protocol rewards, please come talk to us
[09:22:08] the average consumer also doesn't use general purpose hardware to secure blockchains either
[09:22:14] not just for PoW, in fact *NOT* for PoW
[09:22:32] it requires sw/hw co-design
[09:23:10] we are in long-term discussions/collaboration over this with Ethereum, Bitcoin Cash. just talk right now.
[09:23:16] this was recently published though suggesting more uptake though I guess https://btcmanager.com/college-students-are-the-second-biggest-miners-of-cryptocurrency/
[09:23:29] I find it pretty hard to believe their numbers
[09:24:03] well
[09:24:09] sorry, original article: https://www.pcmag.com/news/366952/college-kids-are-using-campus-electricity-to-mine-crypto
[09:24:11] just talk, no? rumors
[09:24:18] college students are already more educated than the average consumer
[09:24:29] we are not seeing many such customers anymore
[09:24:30] it's data from cisco monitoring network traffic
[09:24:33] and they're always looking for free money
[09:24:48] of course anyone with "free" electricity is inclined to do it
[09:24:57] but look at the rates, cannot make much money
[09:26:06] Ethereum is a bloated collection of bugs wrapped in a UI. I suppose they need all the help they can get
[09:26:29] Bitcoin Cash ... just another get rich quick scheme
[09:26:38] hmm :)
[09:26:51] I'll give it back to you, ok? ha ha. arrogance comes before the fall...
[09:27:17] maye we should have a little fun with CNv4 mining :)
[09:27:25] ;)
[09:27:38] come on. anyone who has watched their track record... $75M lost in ETH at DAO hack
[09:27:50] every smart contract that comes along is just waiting for another hack
[09:27:58] I just wanted to throw out the "in-protocol reward" thing, maybe someone sees the idea and wants to cowork. maybe not. maybe it's a stupid idea.
[09:29:18] linzhi-sonia: any thoughts on CN-GPU?
[09:29:55] CN-GPU has one positive aspect - it wastes chip area to implement all 18 hash algorithms
[09:30:19] you will always hear roughly the same feedback from me:
[09:30:52] "This algorithm very different, it heavy use floating point operations to hurt FPGAs and general purpose CPUs"
[09:30:56] the problem is, if it's profitable for people to buy ASIC miners and mine, it's always more profitable for the manufacturer to not sell and mine themselves
[09:31:02] "hurt"
[09:31:07] what is the point of this?
[09:31:15] it totally doesn't work
[09:31:24] you are hurting noone, just demonstrating lack of ability to think
[09:31:41] what is better: algo designed for chip, or chip designed for algo?
[09:31:43] fireice does it on daily basis, CN-GPU is a joke
[09:31:53] tevador: that's not really true, especially in a market with such large price fluctuations as cryptocurrency
[09:32:12] it's far less risky to sell miners than mine with them and pray that price doesn't crash for next six months
[09:32:14] I think it's great that crypto has a nice group of asicmakers now, hw & sw will cowork well
[09:32:36] jwinterm yes, that's why they premine them and sell after
[09:32:41] PoW is about being thermodynamically and cryptographically provable
[09:32:45] premining with them is taking on that risk
[09:32:49] not "fork when we think there are asics"
[09:32:51] business is about risk minimization
[09:32:54] that's just fear-driven
[09:33:05] Inge-: that's roughly the feedback
[09:33:24] I'm not saying it hasn't happened, but I think it's not so simple as saying "it always happens"
[09:34:00] jwinterm: it has certainly happened on BTC. and also on XMR.
[09:34:19] ironically, please think about it: these kinds of algos indeed prove the limits of the chips they were designed for. but they don't prove that you cannot implement the same algo differently! cannot!
[09:34:26] Risk minimization is not starting a business at all.
[09:34:34] proof-of-gpu-limit. proof-of-cpu-limit.
[09:34:37] imagine you have a money printing machine, would you sell it?
[09:34:39] proves nothing for an ASIC :)
[09:35:05] linzhi-sonia: thanks. I dont think anyone believes you can't make a more efficient cn-gpu asic than a gpu - but that it would not be orders of magnitude faster...
[09:35:24] ok
[09:35:44] like I say. these algos are, that's really ironic, designed to prove the limitatios of a particular chip in mind of the designer
[09:35:50] exactly the wrong way round :)
[09:36:16] like the cache size in RandomX :)
[09:36:18] beautiful
[09:36:29] someone looked at GPU designs
[09:37:31] linzhi-sonia can you elaborate? Cache size in RandomX was selected to fit CPU cache
[09:37:52] yes
[09:38:03] too large for GPU
[09:38:11] as I said, we are designing the algorithm to exactly fit CPU capabilities, I do not claim an ASIC cannot be more efficient
[09:38:16] ok!
[09:38:29] when will you do the audit?
[09:38:35] will the results be published in a document or so?
[09:38:37] I claim that single-chip ASIC is not viable, though
[09:39:06] you guys are brave, noone disputes that. 3 anti-asic hardforks now!
[09:39:18] 4th one coming
[09:39:31] 3 forks were done not only for this
[09:39:38] they had scheduled updates in the first place
[09:48:10] Monero is the #1 anti-asic fighter
[09:48:25] Monero is #1 for a lot of reasons ;)
[09:48:40] It's the coin with the most hycs.
[09:48:55] mooooo
[09:59:06] sneaky integer overflow, bug squished
[10:38:00] p0nziph0ne ([email protected]/vpn/privateinternetaccess/p0nziph0ne) has joined #monero-pow
[11:10:53] The convo here is wild
[11:12:29] it's like geo-politics at the intersection of software and hardware manufacturing for thermoeconomic value.
[11:13:05] ..and on a Sunday.
[11:15:43] midipoet: hw and sw should work together and stop silly games to devalue each other. to outsiders this is totally not attractive.
[11:16:07] I appreciate the positive energy here to try to listen, learn, understand.
[11:16:10] that's a start
[11:16:48] <-- p0nziph0ne ([email protected]/vpn/privateinternetaccess/p0nziph0ne) has quit (Quit: Leaving)
[11:16:54] we won't do silly mining against xmr "community" wishes, but not because we couldn'd do it, but because it's the wrong direction in the long run, for both sides
[11:18:57] linzhi-sonia: I agree to some extent. Though, in reality, there will always be divergence between social worlds. Not every body has the same vision of the future. Reaching societal consensus on reality tomorrow is not always easy
[11:20:25] absolutely. especially at a time when there is so much profit to be made from divisiveness.
[11:20:37] someone will want to make that profit, for sure
[11:24:32] Yes. Money distorts.
[11:24:47] Or wealth...one of the two
[11:26:35] Too much physical money will distort rays of light passing close to it indeed.
submitted by jwinterm to Monero [link] [comments]

BNC public chain officially launched on March 19

BNC public chain officially launched on March 19
According to the official BNC public chain, they will be launching synchronous on 19th March globally in nine countries (China, Malaysia, Thailand, Vietnam, Cambodia, Indonesia, Singapore, Philippines and Brunei) and 30 communities. This cause strong attention within the industry, especially attention to value and ecology of Proof-of-Capacity (PoC) from blockchain experts. Website and forum in Europe, America and Southeast Asia have a hot pursuit of BNC, hundreds of media vying for coverage. At the same time, attention of BNC is rising because of Proof-of-Capacity (PoC) technology development have a worldwide boom.

https://preview.redd.it/jcseqh15cem41.png?width=559&format=png&auto=webp&s=cef25e0877980f50d7c565eff679c502be62b163
Easy to say, nature of PoC is mining through hard disk, PoW is mining through CPU (or graphics cards, ASIC, these are stronger computing chips, PoS is mining through the proportion of cryptocurrency holdings, while DPoS is voting to decide super node.

https://preview.redd.it/c2kwytw8cem41.png?width=600&format=png&auto=webp&s=169a41f4c4577049ea799b61a14827b2f29fc715
Our main character today PoC has something in common with Bitcoin PoW, but there are some substantive differences. As we know, Bitcoin PoW requires miners to perform hash calculations continuously and repeatedly. miners need to run their computing chips with high intensity and consume extremely high power resources.
BNC will change the pyramid situation that BTC facing at present: The high monopoly of the big mining farm caused the increasing centralization of mines leading to monopolization of large households and national policy pressures.
Large electricity consumption and noise and heat from mining machines do not meet environmental restrictions in more than 159 countries so the whole mining was ruled by the elite. As a result, ordinary users can't participate in BTC's decision-making at all.
BNC's ultimate dream is to focus on the pain of the existing market, achieve low threshold entry mining for everyone! Everyone mining!

https://preview.redd.it/r3rl26vbcem41.png?width=436&format=png&auto=webp&s=1c3d1377febf5993b1158c24a8f5a0c961f15d4a
Computing power cost is also one of the important indexes of mining revenue. Computing power cost include competition for performance and equipment, mining machine's computing power determined the day's mining earnings. Quality of PoW machine depends on computing power, but the higher the power, the higher the price. The impact of a mining machine worth tens of thousands on the return cycle is also significant. The greater the computing power, the greater the energy consumption. Electricity consumption of mining is staggering, so mining farm have to relocate to low electricity fees area, but a lot of power is wasted. By comparison, power consumption of BNC hard disk is lower, energy consumption is the same as running a computer.

https://preview.redd.it/psbezjjecem41.png?width=640&format=png&auto=webp&s=95c88aa9241d184a46fd1a3525bdf2183137614e
After the industry goes through the bull bear cycle, heat and cold alternate reshuffle period, PoC hard disk mining direction effect will become more and more obvious. Failure to focus on compliance, lack of quality asset-selection capabilities, lack of technology build-up and business innovation capabilities will be difficult to survive.
BNC cling to the front of the times, each time the layout is only for better brilliance. At a time when the mature Internet is combined with blockchain, BNC will create a new wave of wealth, bring more investors to believe that everyone can mining, every investor in cryptocurrency is back at the top of wealth. BNC strive to build PoC hard disk mining, creating unparalleled wealth myths.

https://preview.redd.it/f8s7yuogcem41.png?width=531&format=png&auto=webp&s=92785eb07805d4b9f3970f8303eaae81943e7f6a
BNC knows that innovation can drive development and create new brilliance.
BNC lets you experience the explosion of POC hard disk mining mode! If you have a dream, come to BNC to make your digital assets truly valuable!
submitted by BitcoinNC_BNC to u/BitcoinNC_BNC [link] [comments]

NOTARY NODES 2019 - Candidature of Crypto Economy

NOTARY NODES 2019 - Candidature of Crypto Economy

NOTARY NODES 2019 - Candidature of Crypto Economy


https://preview.redd.it/x7yivgjxdts21.jpg?width=1210&format=pjpg&auto=webp&s=7108516f70f0b0fb68bf9e3845dab5a24efa3d74

WHO WE ARE

Crypto Economy is an independent multilingual platform dedicated to blockchain technology and the vast world of cryptocurrencies, in which we share and analyze the latest news about existing and future projects in the sector.
Our platform not only provides information but also gives added value to users in the form of useful applications on the site. Such as our mining profitability calculator; a prices tracking section of the top 100 of the main cryptocurrencies updated in real time; or our list of ICOs with a useful countdown set to be informed about the relevant dates of each phase of the projects. We continue working on new and interesting tools to offer attractive and valuable content to our readers.
We are a team with true enthusiasm for Bitcoin and all other projects in the ecosystem and we are sure of the benefits that the adoption of Blockchain technology can provide. With over 6 years of experience in the sector, passionate in our purpose to raise awareness about the existence of this technology.
As a media site, we are a young project, growing since 2016 that makes us very positive about the potential of our diffusion throughout the world, with thousands of direct visits per day and thousands of followers in our social networks.

Crypto Economy and Komodo Platform

Crypto Economy team has followed the steps of the Komodo project since its inception, its main members were already followers of the Bitcoin Dark project and participated as investors in the Komodo ICO in 2016.
As a crypto-digital media, we were supporting the Komodo project in its earliest phase to promote its adoption, since we believe that privacy is a fundamental pillar that should guide an important part of the developments in the field of cryptocurrencies.
That is why in our mining profitability calculator we only added coins to mine focused on these beliefs, and therefore, KMD was one of the first ones to be added and get their place in it on its own merits.

https://preview.redd.it/06x6ix0zdts21.jpg?width=696&format=pjpg&auto=webp&s=639caf0d13ed6475919c713d3d8fed440d850800
https://www.crypto-economy.net/en/komodo-and-the-consensus-on-digital-currencies/
https://www.crypto-economy.net/en/jumblr-the-new-sharedrop-for-komodo-holders/

As a Notary Node, what can Crypto Economy provide?

Crypto Economy wants to be part of the Komodo community in a more active and committed way, that is why, if elected as Notary Node for 2019, Crypto Economy will contribute with the project not only by providing the node with the power and capacity necessary for the proper functioning of the notarization of the Komodo network, along with the required knowledge to make it possible, but also making use of our media group to spread the Komodo brand among our readers and for this:
  • We will publish all the relevant news about Komodo that may arise
  • We will publish reviews, guides and tutorials, and more content with the aim of promoting the adoption of KMD
  • We will run a giveaway among our readers to let them know Komodo Platform and help, as a result, the KMD user community grow.
Furthermore, we will destinate the 50% of our mining rewards as Notary Operator to support Komodo projects in the following way:
  • 40% - CHIPS development
  • 10% - We will mantain a fund for other KMD projects in development who request it

Server Info

EU Server

Voting address: RXxDVSpCyWEn2bkVGAauAQDugX9UgWYLUM
  • CPU: Intel i7-7700K OC - 4c/8t - 4,7GHz /5GHz
  • RAM: 64GB DDR4 2400 MHz
  • Bandwidth: 500 Mbit/s
  • HDD 5Tb
submitted by Crypto-Economy to komodoplatform [link] [comments]

[Blockchain Classroom] Lesson 26:What is a miner?

Take Bitcoin as an example, a Bitcoin miner is a professional device that obtains a newly generated Bitcoin reward by running a large number of calculations to compete for bookkeeping rights. It generally consists of a mining chip, a heat sink and a fan. It only performs a single calculation program and consumes a large amount of power.

Mining is actually a competition of computing power between miners. Miners with more computing power have a higher probability of mining Bitcoin. As the computing power of the entire network rises, it becomes more and more difficult to mine Bitcoin with traditional equipment (CPU, GPU). People have developed chips specifically for mining. The chip is the core part of the mining machine. During the operation of the chip, a large amount of heat is generated. In order to cool down, Bitcoin miners are generally equipped with heat sinks and fans.

The user downloads the Bitcoin mining software on the computer, uses the software to assign the tasks of each mining machine, and then can start mining. The algorithm of each currency is different, and the mining machines required are also different.
submitted by BitRabbit_Team to u/BitRabbit_Team [link] [comments]

Mining ERC-918 Tokens (0xBitcoin)

GENERAL INFORMATION

0xBitcoin (0xBTC) is the first mineable ERC20 token on Ethereum. It uses mining for distribution, unlike all previous ERC20 tokens which were assigned to the contract deployer upon creation. 0xBTC is the first implementation of the EIP918 mineable token standard (https://eips.ethereum.org/EIPS/eip-918), which opened up the possibility of a whole new class of mineable assets on Ethereum. Without any ICO, airdrop, pre-mine, or founder’s reward, 0xBitcoin is arguably the most decentralized asset in the Ethereum ecosystem, including even Ether (ETH), which had a large ICO.
The goal of 0xBitcoin is to be looked at as a currency and store of value asset on Ethereum. Its 21 million token hard cap and predictable issuance give it scarcity and transparency in terms of monetary policy, both things that Ether lacks. 0xBitcoin has certain advantages over PoW based currencies, such as compatibility with smart contracts and decentralized exchanges. In addition, 0xBTC cannot be 51% attacked (without attacking Ethereum), is immune from the “death spiral”, and will receive the benefits of scaling and other improvements to the Ethereum network.

GETTING 0xBITCOIN TOKENS

0xBitcoin can be mined using typical PC hardware, traded on exchanges (either decentralized or centralized) or purchased from specific sites/contracts.

-Mined using PC hardware

-Traded on exchanges such as


MINING IN A NUTSHELL

0xBitcoin is a Smart Contract on the Ethereum network, and the concept of Token Mining is patterned after Bitcoin's distribution. Rather than solving 'blocks', work is issued by the contract, which also maintains a Difficulty which goes up or down depending on how often a Reward is issued. Miners can put their hardware to work to claim these rewards, in concert with specialized software, working either by themselves or together as a Pool. The total lifetime supply of 0xBitcoin is 21,000,000 tokens and rewards will repeatedly halve over time.
The 0xBitcoin contract was deployed by Infernal_Toast at Ethereum address: 0xb6ed7644c69416d67b522e20bc294a9a9b405b31
0xBitcoin's smart contract, running on the Ethereum network, maintains a changing "Challenge" (that is generated from the previous Ethereum block hash) and an adjusting Difficulty Target. Like traditional mining, the miners use the SoliditySHA3 algorithm to solve for a Nonce value that, when hashed alongside the current Challenge and their Minting Ethereum Address, is less-than-or-equal-to the current Difficulty Target. Once a miner finds a solution that satisfies the requirements, they can submit it into the contract (calling the Mint() function). This is most often done through a mining pool. The Ethereum address that submits a valid solution first is sent the 50 0xBTC Reward.
(In the case of Pools, valid solutions that do not satisfy the full difficulty specified by the 0xBitcoin contract, but that DO satisfy the Pool's specified Minimum Share Difficulty, get a 'share'. When one of the Miners on that Pool finds a "Full" solution, the number of shares each miner's address has submitted is used to calculate how much of the 50 0xBTC reward they will get. After a Reward is issued, the Challenge changes.
A Retarget happens every 1024 rewards. In short, the Contract tries to target an Average Reward Time of about 60 times the Ethereum block time. So (at the time of this writing):
~13.9 seconds \* 60 = 13.9 minutes
If the average Reward Time is longer than that, the difficulty will decrease. If it's shorter, it will increase. How much longer or shorter it was affects the magnitude with which the difficulty will rise/drop, to a maximum of 50%. * Click Here to visit the stats page~ (https://0x1d00ffff.github.io/0xBTC-Stats) to see recent stats and block times, feel free to ask questions about it if you need help understanding it.

MINING HARDWARE

Presently, 0xBitcoin and "Alt Tokens" can be mined on GPUs, CPUs, IGPs (on-CPU graphics) and certain FPGAs. The most recommended hardware is nVidia graphics cards for their efficiency, ubiquity and relatively low cost. As general rules, the more cores and the higher core frequency (clock) you can get, the more Tokens you will earn!
Mining on nVidia cards:
Mining on AMD cards:
Mining on IGPs (e.g. AMD Radeon and Intel HD Graphics):
Clocks and Power Levels:

MINING SOFTWARE AND DESCRIPTIONS

For the most up-to-date version info, download links, thread links and author contact information, please see this thread: https://www.reddit.com/0xbitcoin/comments/8o06dk/links_to_the_newestbest_miners_for_nvidia_amd/ Keep up to date for the latest speed, stability and feature enhancements!
COSMiC Miner by LtTofu:
SoliditySha3Miner by Amano7:
AIOMiner All-In-One GPU Miner:
TokenMiner by MVis (Mining-Visualizer):
"Nabiki"/2.10.4 by Azlehria:
~Older Miners: Older and possibly-unsupported miner versions can be found at the above link for historical purposes and specific applications- including the original NodeJS CPU miner by Infernal Toast/Zegordo, the '1000x' NodeJS/C++ hybrid version of 0xBitcoin-Miner and Mikers' enhanced CUDA builds.

FOR MORE INFORMATION...

If you have any trouble, the friendly and helpful 0xBitcoin community will be happy to help you out. Discord has kind of become 0xBTC's community hub, you can get answers the fastest from devs and helpful community members. Or message one of the community members on reddit listed below.
Links
submitted by GeoffedUP to gpumining [link] [comments]

Bitcoin is about to halve, maybe you could mine DISC?

There are less than 200 days to Bitcoin's halving cycle, and the bull market is coming soon? Sorry, I don't know if the bull market will come, but I know that there will be a large number of small hashrate miners who can't participate in BTC mining. Under the effect of halving, the reward for a single block will be reduced to 6.5 Bitcoins. If you want to maintain the current revenue, this means that the miner's hashrate must increase. You said that the mining machine is tens of thousands, and there is no money to add hashrate? Sorry, then you can only quit, no money, you may be unable to mine Bitcoin.
"The risk of leverage is high, the contract does not dare to join, and life can only be maintained by mining." - Che Guevara Miner
Although it is a joke, it is indeed a true portrayal of most miners, especially small miners. The biggest shortcoming of a small miner is that there is no money in the pocket, so they will choose to mine. After all, the risk of mining is lower and the revenue is relatively stable compared to the coin trading.
In this way, mining is really a good way, don't be too happy. Looking at the previous article, Bitcoin will soon be halved! This means that the fullnet hashrate will increase dramatically, the mining machine will have higher hashrate, and the individual is likely to no longer be able to participate in mining.
Then where should this group of small miners go? There are still tens of thousands of dollars, can you mine? I can tell you very responsible,yes, you can! And you can mine all the time, what will we mine? DISC!
What is DISC?
DISC is a crypto currency that uses CPOC (Conditioned Proof Of Capacity). You could use hardisk to mine the DISC. Is it incredible, and the hardisk can also mine? Don't be surprised, when the graphics card was used to mine Bitcoin, a large group of people was also surprised.
What is POC?
POC is the hardisk mining, POC uses the mechanical hardisk to store the answers needed for mining. The whole mining process is just using the computer's CPU to scan the hardisk space. Whoever has the larger hardisk capacity, who has a greater probability to crack the Block puzzles and get the block rewards.
POC strictly speaking, it can not be regarded as a new consensus algorithm, it is also a kind of POW, the biggest difference between the two is that one uses computing equipment (CPU, GPU, ASIC chip) mining, one use Storage equipment (mechanical hardisk) mining.
What are the advantages of DISC+POC?
It is no exaggeration to tell you that the current cost of mining a Bitcoin is about 40,000 kWh. Bitcoin miners are not paying for electricity, or they are on the way to paying electricity. Well, when it comes to this, you should be able to guess what the advantages of DISC are. Yes, it is power saving. The reasons are as follows:
The process of mining Bitcoin is to calculate the answer required for mining. This is similar to the students who do not work hard. When they are doing the work, they need to keep checking the books all the time, which is time-consuming and laborious. Mining Bitcoin is not only extremely inefficient, but also wastes a lot of power because of the long-term use of computationally intensive equipment.
The DISC hardisk mining is like a hard-working student. When you are doing a problem, you only need to fill in the answers in your head, which is easy and enjoyable. DISC hardisk mining, high efficiency and low power consumption, mainly before the start of mining, it uses the CPU, GPU to calculate a large number of answers, and then store the answer of the mining in the hardisk, the mining process is only every Scan the hardisk space in a few minutes.
This is the first advantage of DISC, saving power.
Some people may refute it: I have paid money on Bitcoin mining fees, and the electricity bill has been handed over to the country. Bitcoin has driven economic development. Yes, it is undeniable that Bitcoin has indeed brought some opportunities for economic development in some economically underdeveloped inland areas. But don't forget other reasons to mine Bitcoin in the inland area.
Anyone who knows Bitcoin mining knows that mining machines that mine Bitcoins are often overloaded, in which case machines often generate huge amounts of noise and heat. If the human body is in an environment of 80 to 90 decibels for a long time, permanent hearing damage will occur. It is said that if you are in a high-noise environment for a long time, you will be deaf. You said that a machine will not affect anything, then a Mine with hundreds of thousands of mining machines?
Bitcoin mining will accelerate global warming. In addition to the heat emitted by the machine itself, a large number of thermal power stations will release a large amount of carbon emissions. Bitcoin currently generates 22 million tons of carbon emissions per year. The global Internet's carbon dioxide emissions are only 33 million tons, and Bitcoin mining produces carbon emissions equivalent to one year's emissions in Hamburg, Germany or Las Vegas.
The mechanical hardisk used in DISC mining has its own characteristics of low power consumption, low heat and low noise. Even if you mine at home, it will not affect anyone or anything.
This is the second advantage of DISC hardisk mining. Energy saving and environmental protection.
In addition to power consumption and environmental protection, Bitcoin mining has problems such as high risk and centralization.
The risk is high. As mentioned earlier, Bitcoin mining requires 24 hours of uninterrupted calculations and the machine is in an overloaded state for a long time. In this case, the mining machine is prone to irreparable conditions. In many cases, the mining machine is damaged. In addition, the impact of the currency price on the mining machine is also very large. The ASIC integrated chip used by the Bitcoin mining machine is a device that only has one function (mining). If the price of the currency drops sharply, because the power consumed by the mining machine itself is extremely high, and the electricity expenditure of mining is the majority of the revenue, it is easy to make ends meet. At this time, the miners can only stop mining.
The hardisk and the graphics card, in addition to being used for mining, and the role of storing data, even if you can not participate in mining, you could format the hardisk, used to save movies, photos is also a good choice. And the price of the hardisk is extremely low, you can not use it, you can also sell it to people in need at low prices.
This is the third advantage of DISC hardisk mining. The residual value of the equipment is high and the risk of mining is low.
After 10 years of development, Bitcoin has gradually changed from a white paper concept of one person to one vote to a game in which only a few elites can participate. At present, the six mines headed by Bitland have mastered a hashrate of over 51%. In this case, it is very simple for six mines to do evil. They can modify the algorithm, roll back the transaction, and more. You can think that these six mines have controlled the Bitcoin network.
In addition to being a mining pool, Bitland has a status as a mining machine manufacturer. Bitcoin mining equipment can only be manufactured by a few mining machine manufacturers. They are both your friendly and your enemy. So it is not difficult to explain why Bitcoin is becoming more and more centralized. The mining machines they manufacture, the mine pool they control.
Everything is controlled by others, what else do you play?
The hardisk itself is the cornerstone of the construction of the Internet world. Therefore, it has many brands and large shipments. There is no one or two hardisk businesses monopolizing the hardisk. You raise the price and I go elsewhere to buy it. Therefore, from the source to eliminate the harvest of the hardisk business.
DISC hardisk mining through the hardisk capacity as a consensus basis, so that everyone can participate in mining at a very low cost, this way more decentralized, nodes are more dispersed, so its decentralization is higher than Bitcoin.
This is the fourth advantage of DISC hardisk mining, with a higher degree of decentralization.
Summary
The first decade of the blockchain belongs to Bitcoin, but POW also brings a lot of "troubles" to Bitcoin. The monopoly caused by centralization, the huge consumption of electricity, and environmental pollution have all become the pain points of the mining industry. The emergence of DISC has once again seen hope.
In a gossip, many people feel that the DISC, including the entire hardisk mining, has no hope. Indeed, the performance of the currency price is not satisfactory, but I hope that everyone will hold it and wait for the bull market to come. You only need to look at the advantages of DISC, it does not consume electricity.
The last sentence is given to a firm DISC believer. "hold coins in the bear market, makes money in the bull market, and when the bull market comes, you fly." - DISC Miner
submitted by Diskcoin to DiskcoinOrg [link] [comments]

An in depth look into Sparkster and why I believe it is in a league of its own

Introduction
Today I am writing about a project I truly believe in. I am on the same page with Ian Balina when I state that I see this project is an all-star ICO. This is not your average run-of-the-mill vapour ware ICO with No MVP. This is a working platform with a great team behind it. You can find AMA’s on YouTube(Link 1)with live demonstrations of their TPS progress to date and you can also try out their platform for yourself on their website, these are linked at the end of the article for your convenience. Also, they have a pretty good bounty programme running at the moment which I shall link also(Link 2).
Please don’t consider this investment advice, I hope you will read this article and consider it a starting point for your own research. At the time of writing the market has taken another nasty dip, however this is the time when smart investments need to be made, And I truly fell this is one of them. I would also like any of you who enjoy this article to please upvote it and check out my previous work and stay tuned for more.
I will be diving deep into this whitepaper (Link 3) today and basing my article off videos and my personal experience on their platform. All this information can be found within their website and whitepaper. As such I imagine this is going to be a long article.
So, to begin Sparkster is essentially a decentralised cloud platform that will allow anybody to build software in plain English via simple drag and drop function. In their whitepaper they confess that this was inspired by MIT scratch. In today’s world programmers work in various kinds of code languages, these all require training in different types of languages. For example solidity is one of the most popular used today which “is a contract-oriented programming language for writing smart contracts” (Wikipedia, 2018). This is currently used on many blockchain platforms, it was developed by Ethereum’s project solidity team for use on the Ethereum virtual machine and is the most popular language used at present.
Sparkster aims to provide a platform which will allow smart contracts to run at 10 million TPS per second, which would make it the fastest decentralised cloud software in the world.
Concept development
In their whitepaper they suggest this project was conceived after spending 14 years working with software engineers designing and building ERP software for a start-up. Sparkster was born from the frustration of this process and after 6 years of R&D they have the working product we see today. This is an enterprise ready platform. They also claim they have already signed deals with large tech companies (ARM & Libelium).
They also talk about how the entry is trying to make things more practical but it is not far enough. Sparkster are the market leaders here as they are targeting an audience of 99% non-software developers and allowing them to build software. Interestingly in 2018 at the mobile world congress they presented the use of this platform using AI facial recognition to detect a cleaner in a house and opening a door lock, I seen this on YouTube video, which I will link below(Link 4). This is a team which have proved they have a working product.
Claims/ Vision
  1. In their whitepaper they claim they want to become the world’s first platform where people can build their own visions into reality and create financial independence for themselves and contribute to society.
  2. Sparkster will tear apart the barrier to entry to software creation. Their drag and drop functionality on the platform allows this. Up until yesterday I had no clue how a smart contract worked at the basic level, now I consider myself an expert software developer- Who would have thought I could throw away my old life and upskill over 24 hours? Ha.
  3. What I also love about this project is that it will empower people to bring their own ideas to the table and be able to sell them, thus creating financial independence.
  4. The Sparkster, (2018) website(Link 5)suggests they will further disrupt the 200 billion cloud computing industry and combat the extortionate prices large centralised cloud provides like AWS, Microsoft, Google and IBM charge.
  5. This is a finished product guys, please try it yourself if you don’t believe me.
Problem today
As per Sparkster, (2018) claim the biggest problem faced today is that organisations and individuals who wish to implement AI, IOT and smart contract technology have limitations placed on them. Most notably being that their own IT departments are adapting too slowly and there is a serious lack of experienced personnel in these areas. When I watched the AMA that Sajjad Daya (CEO) did with IAN Balina, he described that it is hard to interpret what you want to a developer and get the result you require; the end result then often does not meet your expectations. This of course leads to time wasting as it requires much back and forth correspondence. He stated that this can be months down the line (Something I have experienced in my own organisation). This traditional “software development lifecycle” is truly a slow and painful process, just as they claim in their whitepaper. Also, when changes need to be made to the software down the line it is very expensive.
Further-more the team claim that most business software used today (SAP, Oracle, Microsoft etc… is in-capable of interfacing with the technologies of the future (IOT, AI, Smart contracts). The Sparkster whitepaper further goes on to suggest that the talent is just not there in the industry today to face this challenge either and much up-skilling is required. The team believe that the high capital cost and time periods to replicate vision onto software in the traditional manner is the biggest problem facing enterprises today as it curbs innovation. I concur with this sentiment.
How they will achieve/solve this
According to their whitepaper, this platform is the solution to all of the above problems. It is a Platform which targets the new era of AI, IOT and smart contracts and all tailored to non-developesoftware experts “making is accessible to the 99% who do not know how to code and don’t want to learn” (Sparkster, 2018).
They will create this platform by targeting users of cell phones, notebooks, laptops and other personal devices- who in essence will all become miners on the network. This will then in turn provide users with Spark tokens as a reward for contributing spare capacity. Using these devices is far cheaper than todays centralised systems according to the team. They further proclaim in their whitepaper this lower cost will arise from using inexpensive nodes and as this scales the cost goes down; compared to traditional cloud computing which remains constant. Companies will provide the value via paying for the software creation.
Fees
To scale the platform, they will make personal use free, but limited to a certain number of transactions per month. This restriction can be lifted by referring others. The commercial use will be via ongoing fees (licences, transaction fees, storage fees etc...). The team also describe how the platform and cloud are complimentary, which will allow users to build software 100x faster and cheaper than traditional means, so this will be a very popular mass blockchain adoption platform in my view.
Their plan for growth
A marketplace will essentially become available when users sell their software creations via peer to peer transactions. So, value really depends on how users use the platform. Also, users lending their free memory (CPU) on phones etc… will be awarded spark tokens. These can all be used to negate the fees paid.
According to their whitepaper they will also focus on strategic partnership. As mentioned above they have already partnerships with ARM (World’s largest computer chip designer) and Libellium (Industrial sensor and gateway distributor). They also plan to target vertical markets, specifically IOT and smart contracts as growth is forecast to be huge in both. I personally see the use of smart contracts in society as the single biggest use case of blockchain in the future.
Platform
What is amazing about this platform is that you can actually try it for yourself on their website. I conducted the 6 walkarounds myself and was very impressed by what I experienced. I have never attempted to try create anything with software, but the process was made so simple by Sparkster. You can literally drag and drop different interfaces together and define the behaviour of each block. It’s a very simple and intuitive approach to building smart contracts. As described by Sparkster, (2018) whitepaper you just snap together blocks that describe the “what” you want without worry about “how” it works, they even attribute it to building with Lego. The walkthroughs bring you through how to create a simple calculator and by the 6th lesson you have developed a complex insurance smart contract from which premiums can be calculated and payments automatically made.
Sparkster claim that this will make the creation of smart contracts 100 times faster and cheaper than traditional software development, a claim which I am starting to believe after experience their walkthrough. This is a rare project which already has a working platform- Why wouldn’t you be impressed?
Most ICO’s today are nothing but vapourware, who look for you money and don’t even have minimum viable projects to offer. I would advise you all to look at their AMA’s on YouTube and partake in their walkthroughs and you will see for yourself.
A more detailed look into their platform
According to Sparkster, (2018) their smart software is made up of:
  1. Flows- The definition of the software, made up of all core components of the platform.
  2. Functions- Single building blocks that perform units of work which can be plugged together to build processes (e.g. an insurance policy as seen in their walkthrough video). The have a well-defined user interface also.
  3. Documents- Basic data storage entities on the platform, they differ from functions as they are there to retrieve, persist, update and delete data. Sparkster say that they are there to represent an entity in the real world e.g. a user’s car insurance policy. Furthermore, storage nodes on the cloud will be rewarded for this storage and retrieval of data.
  4. Integrations- This is the interface to the outside world. Sparkster say they provide a simple abstraction to a 3rd party API or webservices. What I like about this is that somebody can create this (e.g. shipping quotation) and allow others to use after its created via the market place. Sparkster aim to allow people to do this without worrying how it all works.
  5. Devices- These replicate devices in the real world comprising of commands and fields (Bidirectional data transfer). In their whitepaper they use an example of a temperature probe in a greenhouse where the temperature feeds back to the action field. It is very complex stuff.
  6. Gateways- these represent a group of devices connected to one gateway. Sparkster say these are all connected to the internet allowing the platform interact with them all individually or as a group.
  7. Smart Contracts- This is the element I found most fascinating during the Sparkster walkthrough videos. This allows you to create smart contracts to allow transactions on the platform. Currently they are using Ethereum smart contracts and Iota smart transactions. I found the whole process so easy. They further state that all the above components can interact with the smart contracts, which was proven to me in the walkarounds.
Their claim of 10 million TPS
From what I can understand from their whitepaper and from an AMA with their CEO this will be a step by step approach to 10 million tps, admittedly a few years down the line but they already proved their platform works and is running at over 50k TPS with 50 cells. They don’t seem to have hit any scalability issues just yet. And I should not need to remind you that 50k TPS is much more than other blockchains products out there.
In their whitepaper they tell us that this is designed to be a specialised blockchain for the use of “smart software”, What is important to understand is that they can reach higher TPS because they don’t have to “act” like other blockchains, in that most of their clients will want to keep data private which “eliminates the necessity of maintaining global state” (Sparkster, 2018). This in turns allows them to shard their distributed hash tables into client groups, where “one shard never needs to have any awareness of another other shard” (Sparkster, 2018). They will essentially isolate cells from one another in order to scale to this level. They give a great example in their whitepaper where if a company like Air BNB want to put customer data into cells (usernames broke into separate letters per cell), where millions of customers make up their base.
Overall their theory is that there is technically no limit to the number of TPS they can achieve, this is just a target number. I have full confidence they can pull it off, what other blockchain is proving this live on air like this team is?
Decentralised cloud
Sparkster, (2018) website describes how traditional cloud providers such as Amazon, Microsoft and Google have huge costs, relating to server costs, backup power, staff, security and cooling. Decentralised cloud computing will be the death of these organisations. For instance, Sparkster claim that by executing small software components on one’s mobile phone these costs fall near to zero, they envisage a world where a lot of these miners will join the decentralised cloud and make reduce the costs further.
Their cloud will facilitate the execution of smart software created on the platform. Their whitepaper further suggests that one can simply download the Sparkster mining app on their phones which will provide user generated smart software environment (SRE). Companies will stake bids on the exchange for their software to run in a decentralised fashion and stake Spark tokens (Amount willing to pay). The team are envisaging this as a free market where bidders can stake as much as they like and miners ask for anything they like. Payment is made to the miners via these tokens.
They further say computer and storage nodes can join the network and be paid in Spark tokens, but they are required to stake tokens themselves as collateral to ensure they operate honestly. Sparkster will have verification nodes to validate transactions from computer and storage nodes and if any “bad behaviour” is found then they take these staked tokens in the form of a “bounty”. In my opinion this will make it a very secure platform
Sparkster Technology Stack
The below image from their whitepaper shows the levels “smart software” goes through to facilitate decentralised cloud computing.
https://preview.redd.it/4qnqlgowyf311.png?width=357&format=png&auto=webp&s=fa68bc369d37c14073dcbd4869518f3b1485c057
Source: Sparkster, (2018)
Throughput
What is very interesting is the high throughput they can sustain with such a high TPS. If you know anything about blockchain you will understand this is a challenge for every blockchain, the more users to a platform the more scaling is required. For instance, in the bull run in December I remember how slow the Ethereum blockchain became, this was also attributed to the increase in ICOs and DApps launching on the platform.
Sparkster claim their cloud is capable of “scaling linearly without any overhead curtailing its meteoric performance” (Sparkster, 2018). They can achieve this by isolating cells within the chain. They further claim that the whole Idea is to “isolate” chains, essentially creating independent blockchains which have their own hash tables and never synchronize with each other- they describe this like a human cell, which once splits never shares anything with another cell. It is a very simple concept, user’s data is stored in a specific cell, so why would another unrelated company using the Sparkster platform need to know about of access the information in the 1st cell. Each “cell” is capable of 1000tps and because they each have their own hash table this results in 2k tps and so on and so forth.
Essentially data is streamed in parallel but synching is never needed. This is huge- this is a platform which unlike any other blockchain is designed for mainstream adoption. Any company can use it and store data and be sure of a high throughput. As mentioned above they are already at 50k TPS- which is far better than most blockchains today. This is a true working product and I can see this getting to 10 million.
Consensus
Time for a quick history lesson, bitcoin uses proof of work and Ethereum use proof of stake. These are two most common consensuses used today by blockchains. Bitcoin relies on the party with the highest hashing power whereas Ethereum on the party with the highest amount of money. This team has chosen to implement the Steller Consensus Protocol (SCP), because it is better.
Sparkster describe this as a commercial version of the Federate Byzantine Agreement System (FBAS) (1000tps per second). They will also implement a layer for incentives to keep parties honest and minimise risk of attack as SCP does not have this. This will be done by awarding of Spark tokens to computer (donate CPU memory on device) and storage nodes (contribute storage space and network bandwidth). Clients of the platform will be covering these incentives. The team believe this extra layer is required to ensure the platform surpasses traditional cloud platforms and I tend to agree with them.
Their whitepaper further suggests that a proof of work consensus will be used to calculate these incentives. This will allow misbehaviour to be detected and stakes taken from them by verification nodes. Page 35-39 of the whitepaper goes into detail how these are all calculated, which is linked below for your interest.
Consistent hashing
As they don’t use global state this algorithm allows the platform to “hash the clients ID and extract a bounded number” (Sparkster, 2018). This will identify a particular client within a cell.
Privacy
One of the biggest fears of any data platform is privacy protection. The Sparkster team say that their cloud deconstructs data into fragments, encrypts them and disseminates them across the network of nodes. This is particularly important now with the EU’s general Data Protection Regulation (GDPR), as discussed in their whitepaper. So, any hack to the platform will wield meaningless returns. They also claim they use “zk-SNARKs… a zero-knowledge proof to ensure that client data is obfuscated, even from other network participants” (Sparkster, 2018).
Security
They also claim they can detect software intrusions such as tampering with the code, memory or thread. Once their system detects this all client data is automatically deleted from the memory along with the access keys to the Sparkster network, as claimed on their website.
In their whitepaper they also claim that any software built on the platform is “entirely bug free”. This is true because even though you as the users dictate the logic, the actually underlying code is very uniform and consistent.
Their app will also use public/ private keys and digital signatures and check sums will be used to detect file tampering. In their whitepaper they also state that cache data won’t be stored, all data will be encrypted, all communication is SSL/TLS and they will employ 3rd parties to detect malicious payloads in the memory.
Multi chain interoperability
Sparkster can already be used with both Ethereum and Iota, with plans to increase this down the line. This is all to cater for preferences of the user. This is a very transparent platform and tailored around usability and ease.
https://preview.redd.it/c23z7yl2zf311.png?width=451&format=png&auto=webp&s=81c05aeb65a528dd482fc97c4803cb2712b40fd7
Source: (Sparkster, 2018)
Token economics
Stats
Value
The value model proposed by their whitepaper suggests that the global marketplace will be the value driver of the platform. So, people can create and sell content on an open peer-peer market, with the value flowing though the Spark token. Small platform fees will be charged on transactions on the platform (Not on free contributions).
It is a utility tokens because its purpose is to facilitate payments, it will also be the only currency accepted on the platform. Once the decentralised cloud is released in Q4 2018, miners will be able to earn Spark tokens.
I believe this will be a market leader when it comes to mass adoption of blockchain, this is truly a one model fits all platform and it is with growth of the platform which will drive the value of the tokens up. Also, the Spark token is essential to the cloud functionality as miners need to stake tokens to ensure good behaviour, if the opposite occur verification nodes claim these takes, this makes the tokens essential to the smooth running of the platform.
Breakdown of token distribution
Use of funds:
Team
In my view the team has a huge wealth of experience within it. This consists of:
2 all-star advisors
4 on the leadership team
17 further team members (Sparkster Warriors)
· These team members range from software engineers, developers, designers, project team leaders, programmers and digital marketers.
· There is so much experience in this team it would take all day to write about them, but a wide encompassing team like this shows they are serious about what they doing.
Conclusion
This is a not to be missed ICO. I really feel like this is one of the all star ICO’s this year. There is nothing more that really needs to be said, I would just advise you that if you are considering this project then go to their website and test the platform for yourself. It is the walkthroughs that sold me on this project and one which I will be investing in.
Additional reading (Links)
Link 1- AMA with Ian Balina (All-star ICO): https://www.youtube.com/watch?v=_K9j_EGHbpc
Link 2- Sparkster bounty programme: http://sparkster.me/try?r=DU2VUW45
Link 3- Sparkster whitepaper: https://drive.google.com/file/d/1_341kbDEDc9PWn4lbsCGpAmcqDqcggUq/view
Link 4: Sparkster founder &Ceo speaking at MWC 2018: https://www.youtube.com/watch?v=X-Jf9_fcxYo
Link 5: Sparkster website: https://sparkster.me/
References
· En.wikipedia.org. (2018). Solidity. [online] Available at: https://en.wikipedia.org/wiki/Solidity [Accessed 11 Jun. 2018].
· Sparkster (2018). Build and Run Decentralized Software in Plain English. [ebook] Sparkster whitepaper, pp.1-57. Available at: https://drive.google.com/file/d/1_341kbDEDc9PWn4lbsCGpAmcqDqcggUq/view [Accessed 11 Jun.
· Sparkster.me. (2018). Sparkster – Build Apps, Write No Code. [online] Available at: https://sparkster.me/ [Accessed 11 Jun. 2018].018].
submitted by Mick2018 to Sparkster [link] [comments]

Technical Cryptonight Discussion: What about low-latency RAM (RLDRAM 3, QDR-IV, or HMC) + ASICs?

The Cryptonight algorithm is described as ASIC resistant, in particular because of one feature:
A megabyte of internal memory is almost unacceptable for the modern ASICs. 
EDIT: Each instance of Cryptonight requires 2MB of RAM. Therefore, any Cryptonight multi-processor is required to have 2MB per instance. Since CPUs are incredibly well loaded with RAM (ie: 32MB L3 on Threadripper, 16 L3 on Ryzen, and plenty of L2+L3 on Skylake Servers), it seems unlikely that ASICs would be able to compete well vs CPUs.
In fact, a large number of people seem to be incredibly confident in Cryptonight's ASIC resistance. And indeed, anyone who knows how standard DDR4 works knows that DDR4 is unacceptable for Cryptonight. GDDR5 similarly doesn't look like a very good technology for Cryptonight, focusing on high-bandwidth instead of latency.
Which suggests only an ASIC RAM would be able to handle the 2MB that Cryptonight uses. Solid argument, but it seems to be missing a critical point of analysis from my eyes.
What about "exotic" RAM, like RLDRAM3 ?? Or even QDR-IV?

QDR-IV SRAM

QDR-IV SRAM is absurdly expensive. However, its a good example of "exotic RAM" that is available on the marketplace. I'm focusing on it however because QDR-IV is really simple to describe.
QDR-IV costs roughly $290 for 16Mbit x 18 bits. It is true Static-RAM. 18-bits are for 8-bits per byte + 1 parity bit, because QDR-IV is usually designed for high-speed routers.
QDR-IV has none of the speed or latency issues with DDR4 RAM. There are no "banks", there are no "refreshes", there are no "obliterate the data as you load into sense amplifiers". There's no "auto-charge" as you load the data from the sense-amps back into the capacitors.
Anything that could have caused latency issues is gone. QDR-IV is about as fast as you can get latency-wise. Every clock cycle, you specify an address, and QDR-IV will generate a response every clock cycle. In fact, QDR means "quad data rate" as the SRAM generates 2-reads and 2-writes per clock cycle. There is a slight amount of latency: 8-clock cycles for reads (7.5nanoseconds), and 5-clock cycles for writes (4.6nanoseconds). For those keeping track at home: AMD Zen's L3 cache has a latency of 40 clocks: aka 10nanoseconds at 4GHz
Basically, QDR-IV BEATS the L3 latency of modern CPUs. And we haven't even begun to talk software or ASIC optimizations yet.

CPU inefficiencies for Cryptonight

Now, if that weren't bad enough... CPUs have a few problems with the Cryptonight algorithm.
  1. AMD Zen and Intel Skylake CPUs transfer from L3 -> L2 -> L1 cache. Each of these transfers are in 64-byte chunks. Cryptonight only uses 16 of these bytes. This means that 75% of L3 cache bandwidth is wasted on 48-bytes that would never be used per inner-loop of Cryptonight. An ASIC would transfer only 16-bytes at a time, instantly increasing the RAM's speed by 4-fold.
  2. AES-NI instructions on Ryzen / Threadripper can only be done one-per-core. This means a 16-core Threadripper can at most perform 16 AES encryptions per clock tick. An ASIC can perform as many as you'd like, up to the speed of the RAM.
  3. CPUs waste a ton of energy: there's L1 and L2 caches which do NOTHING in Cryptonight. There are floating-point units, memory controllers, and more. An ASIC which strips things out to only the bare necessities (basically: AES for Cryptonight core) would be way more power efficient, even at ancient 65nm or 90nm designs.

Ideal RAM access pattern

For all yall who are used to DDR4, here's a special trick with QDR-IV or RLDRAM. You can pipeline accesses in QDR-IV or RLDRAM. What does this mean?
First, it should be noted that Cryptonight has the following RAM access pattern:
QDR-IV and RLDRAM3 still have latency involved. Assuming 8-clocks of latency, the naive access pattern would be:
  1. Read
  2. Stall
  3. Stall
  4. Stall
  5. Stall
  6. Stall
  7. Stall
  8. Stall
  9. Stall
  10. Write
  11. Stall
  12. Stall
  13. Stall
  14. Stall
  15. Stall
  16. Stall
  17. Stall
  18. Stall
  19. Read #2
  20. Stall
  21. Stall
  22. Stall
  23. Stall
  24. Stall
  25. Stall
  26. Stall
  27. Stall
  28. Write #2
  29. Stall
  30. Stall
  31. Stall
  32. Stall
  33. Stall
  34. Stall
  35. Stall
  36. Stall
This isn't very efficient: the RAM sits around waiting. Even with "latency reduced" RAM, you can see that the RAM still isn't doing very much. In fact, this is why people thought Cryptonight was safe against ASICs.
But what if we instead ran four instances in parallel? That way, there is always data flowing.
  1. Cryptonight #1 Read
  2. Cryptonight #2 Read
  3. Cryptonight #3 Read
  4. Cryptonight #4 Read
  5. Stall
  6. Stall
  7. Stall
  8. Stall
  9. Stall
  10. Cryptonight #1 Write
  11. Cryptonight #2 Write
  12. Cryptonight #3 Write
  13. Cryptonight #4 Write
  14. Stall
  15. Stall
  16. Stall
  17. Stall
  18. Stall
  19. Cryptonight #1 Read #2
  20. Cryptonight #2 Read #2
  21. Cryptonight #3 Read #2
  22. Cryptonight #4 Read #2
  23. Stall
  24. Stall
  25. Stall
  26. Stall
  27. Stall
  28. Cryptonight #1 Write #2
  29. Cryptonight #2 Write #2
  30. Cryptonight #3 Write #2
  31. Cryptonight #4 Write #2
  32. Stall
  33. Stall
  34. Stall
  35. Stall
  36. Stall
Notice: we're doing 4x the Cryptonight in the same amount of time. Now imagine if the stalls were COMPLETELY gone. DDR4 CANNOT do this. And that's why most people thought ASICs were impossible for Cryptonight.
Unfortunately, RLDRAM3 and QDR-IV can accomplish this kind of pipelining. In fact, that's what they were designed for.

RLDRAM3

As good as QDR-IV RAM is, its way too expensive. RLDRAM3 is almost as fast, but is way more complicated to use and describe. Due to the lower cost of RLDRAM3 however, I'd assume any ASIC for CryptoNight would use RLDRAM3 instead of the simpler QDR-IV. RLDRAM3 32Mbit x36 bits costs $180 at quantities == 1, and would support up to 64-Parallel Cryptonight instances (In contrast, a $800 AMD 1950x Threadripper supports 16 at the best).
Such a design would basically operate at the maximum speed of RLDRAM3. In the case of x36-bit bus and 2133MT/s, we're talking about 2133 / (Burst Length4 x 4 read/writes x 524288 inner loop) == 254 Full Cryptonight Hashes per Second.
254 Hashes per second sounds low, and it is. But we're talking about literally a two-chip design here. 1-chip for RAM, 1-chip for the ASIC/AES stuff. Such a design would consume no more than 5 Watts.
If you were to replicate the ~5W design 60-times, you'd get 15240 Hash/second at 300 Watts.

RLDRAM2

Depending on cost calculations, going cheaper and "making more" might be a better idea. RLDRAM2 is widely available at only $32 per chip at 800 MT/s.
Such a design would theoretically support 800 / 4x4x524288 == 95 Cryptonight Hashes per second.
The scary part: The RLDRAM2 chip there only uses 1W of power. Together, you get 5 Watts again as a reasonable power-estimate. x60 would be 5700 Hashes/second at 300 Watts.
Here's Micron's whitepaper on RLDRAM2: https://www.micron.com/~/media/documents/products/technical-note/dram/tn4902.pdf . RLDRAM3 is the same but denser, faster, and more power efficient.

Hybrid Cube Memory

Hybrid Cube Memory is "stacked RAM" designed for low latency. As far as I can tell, Hybrid Cube memory allows an insane amount of parallelism and pipelining. It'd be the future of an ASIC Cryptonight design. The existence of Hybrid Cube Memory is more about "Generation 2" or later. In effect, it demonstrates that future designs can be lower-power and give higher-speed.

Realistic ASIC Sketch: RLDRAM3 + Parallel Processing

The overall board design would be the ASIC, which would be a simple pipelined AES ASIC that talks with RLDRAM3 ($180) or RLDRAM2 ($30).
Its hard for me to estimate an ASIC's cost without the right tools or design. But a multi-project wafer like MOSIS offers "cheap" access to 14nm and 22nm nodes. Rumor is that this is roughly $100k per run for ~40 dies, suitable for research-and-development. Mass production would require further investments, but mass production at the ~65nm node is rumored to be in the single-digit $$millions or maybe even just 6-figures or so.
So realistically speaking: it'd take ~$10 Million investment + a talented engineer (or team of engineers) who are familiar with RLDRAM3, PCIe 3.0, ASIC design, AES, and Cryptonight to build an ASIC.

TL;DR:

submitted by dragontamer5788 to Monero [link] [comments]

Updated FAQs for newcomers

TL:DR: Don't bother mining if you want to get rich yo. You're way too late to the party.
Welcome to the exciting and often stressful world of bitcoin! You are wondering what looks like a once in a lifetime opportunity to get rich quick. Of course you guys probably heard about this "mining" process but what is this?
Simply put, a bitcoin mining machine that performs complicated calculations and when deemed correct by the network, receives a block which contains 25 bitcoins (XBT). This is how bitcoins are generated. So your brain instantly thinks, "Holy shit, how can I get on this gold rush?"
Before you proceed further, I would like to explain the concept of mining further. Bitcoin is limited 21m in circulation. It is coded to release a certain number of blocks at a certain time frame, ie: this year the network will release close to 500,000 bitcoins. What this means is that the more people (or specifically the amount of mining power) mine, the less each person gets. The network tries to keep to this time frame through the process of difficulty adjustments which makes the calculations harder and this happens every 2 weeks. So every 2 weeks, you get less bitcoins with the same hash rate (mining power) based on what the difficulty changes are. Recently, the changes have been pretty staggering, jumping 226% in 2 months. You can see the difficulty changes here.
Now, why are these changes so large?
A bit of a simple history. Bitcoin's algorithm runs on SHA-256. This algorithm can be solved using many hardware, from CPU to GPU and dedicated hardware (Application Specific Integrated Circuits). When bitcoin first started, mining on CPU was a trivial process, you can pretty much earn 50 XBT (the block size then) every few hours between Q1 and Q2 of 2010.
In late 2010, due to the difficulty increase that is reducing the effectiveness of CPU mining, people started to harness GPU mining. Only AMD GPU's architecture design are better optimized for bitcoin mining so this is what the community used. Immediate improvements of more than 10x was not uncommon.
In time of course, GPUs reached their limit and people started to build dedicated. In the same vein as the CPU to GPU transition, similar performance increase was common. These ASICs can only perform SHA-256 calculation so they can be highly optimized. Their performance mainly depends on the die size of the chips exactly like CPU chips.
In general, think of bitcoin mining's technological advancement no different to mining gold. Gold panning (CPUs) vs pickaxes (GPUs) vs machinery (ASICs) and we are still in the ASIC mining race.
ASIC mining started with ASICMiner and Avalon being first to the market, both producing 130nm and 110nm chips. The technology are antiquated in comparison to CPUs and GPUs which are now 22nm with 14nm slated for Q1 next year by Intel but they are cheap to manufacture and with performance gains similar to the CPU to GPU transition, they were highly successful and popular for early adopters. At that point in time since there were less competing manufacturers and the low batch runs of their products, miners became really rich due to the slow increase in difficulty.
The good days came to an end mid August with an unprecedented 35% increase in difficulty. This is due to existing manufacturers selling more hardware and many other players coming onto the market with better hardware (smaller die). Since die shrinking knowledge and manufacturing process are well known along with a large technological gap (110nm vs 22nm), you get an arms race. Current ASIC makers are closing in on our technological limit and until everyone catches up, the difficulty jumps will be high because it is just too easy to get a performance increase. Most newer products run at 28nm and most chips are not well optimized, so it will be around another 6 to 9 months before we see hit a hard plateau with 22nm or 14nm chips. The estimated time frame is because manufacturing chips at 22nm or 14nm is a more difficult and expensive task. In the meantime most manufacturers will probably settle at 28nm and we will reach a soft plateau in about 3 months.
Now, you might ask these questions and should have them answered and if you have not thought about them at all, then you probably should not touch bitcoin until you understand cause you are highly unprepared and probably lose lots of money.
No. If you have to ask, please do not touch bitcoin yet. You will spend more on electricity cost than mining any substantial bitcoin. Seriously. At all. A 7990 would produce a pitiful 0.02879 XBT (USD $14 @ $500/XBT exchange rate) for the next 30 days starting 23 Nov 2013 at 35% difficulty increase.
And if you think you can mine on your laptop either on a CPU or GPU, you are probably going to melt it before you even get 0.01 XBT.
Probably not because you probably forgot that GPUs and CPUs produce a ton of heat and noise. You can try but I see no point earning < $20 bucks per month.
No, because your machine will probably not mine as much as buying bitcoins. This situation is called the opportunity cost. While you can still make money if XBT rise in value, it is a fallacy.
IE: if you start mining on 1 Dec 2013, a KnC Jupiter running at 450Gh/sec (KnC lies as not all chips run at 550Gh/sec) will yield you a total revenue of 9.5189 XBT with a profit of 0.7859 XBT in profit by 30th Jan 2014 at a constant difficulty increase of 35%. The opportunity cost is: 8.5910 XBT @ USD $580/XBT with USD $5,000 which is the cost of a KnC Jupiter. This is the best you can earn and it's a bloody optimistic assumption because:
The only circumstances where you will earn money is when XBT exchange rates is so high that it makes the opportunity cost pales in comparison. Unfortunately this is not the case. If XBT stabilized at 900/XBT today (20 Nov 2013) then we might have a good case.
The risk is just generally not worth it. Unless you have at least a hundred thousand and can make a contract with a manufacturer for a lower cost, do not bother. Just wait until the arms race is over then you can start mining.
Okay, go buy an AsicMiner USB Block Erupter. They are cheap and pretty fun to have.
Sure, just read the answer below on who NOT to go for. You are doing bitcoin a service by securing the network and you have our (the users') gratitude.
You can check out the manufacturers and their products below along with a calculator here.
If you still insist on buying, do not to go for BFL. Their track record is horrid and borderline scammish. KnC fucked up a lot with defective boards and chips. Personally, I think CoinTerra is the best choice.
Alternatively, you can go on the secondary market to buy a delivered product. You can get a better deal there if you know how to do your "return on investment (ROI)" calculation. Personally, I will go for a 45%-50% difficulty increase for the next 3 months for my calculations and a 2% pool fee.
However, most products on ebay are sold at a cost much higher than it should. bitcointalk.org is a cheaper place because everyone knows what are the true value is so you will find less options. If you are unclear or need assistance, please post a question.
I actually do not use any of the pools recommended to the left because I think they lack features.
My favourite is Bitminter (Variable fees based on features used; max 2%). It has all advanced features for a pool, very responsive and helpful owner on IRC. Variable fees is good for those who do not need a large feature set, even with all features turned on, it is still cheap.
Eligius (0% fees) has high value for money but lacks features. It has anonymous mining which might be attractive to certain subset of people but not for others. Many other community member and I disagree highly with the opinions of the owner on the direction of bitcoin. I do use his pool for now but I do so only because I share my miners with a few partners and anonymous mining allows us to monitor the machines without using an account. Bitminter uses only OpenID which is problematic for me.
BTC Guild (3% fees) is another big pool and is fully featured and does charge a premium for their fees. That said, they are the most stable of the lot. I do use them but do so only because my hoster uses them for monitoring. I try not to use them because a pool with a very large hash rate (they are the largest) presents a large vulnerability to bitcoin's network if compromised.
All of them pay out transaction fees.
submitted by Coz131 to BitcoinMining [link] [comments]

The difference between GPU and CPU mining

The difference between GPU and CPU mining


GPU Mining
  • Coins Mined with CPU: Ethereum, Monero, Bitcoin Gold, Zcash, Electroneum, and many others
GPU (or Graphics Processing Unit) is the chip on your graphics card that does repetitive calculations for processing graphics and was initially used mainly by gamers for better graphics. But once Ethereum came along people started buying them up, the price skyrocketed and now there is a certain shortage of gaming graphics cards on the market.
Ethereum Mining with GPUs
All Ethereum based coins use the Ethash algorithm for mining, an algorithm “designed to be ASIC-resistant via memory-hardness.” There might be several reasons behind this, one of them being the possibility of Ethereum switching from Proof of Work to Proof of Stake.
And since ASIC mining is off-limits for Ethereum, using a GPU is a good alternative.
CPU Mining
  • Coins Mined with CPU: Monero, Electroneum, and Bytecoin
The CPU is the Central Processing Unit of any computer. Basically, it is the brains of the computer.
When Bitcoin was first released, you could mine 100 coins a day using just your CPU, which is impossible today.
CPU design optimizes for quickly switching between different tasks. If a coin allows CPU mining, there’s less power in the hands of large mining farms because everyone who has a computer can easily start mining.
The hashing required for Proof of Work is a repetitive mathematical calculation. CPUs have fewer arithmetic logic units, circuits that perform arithmetic operations, and thus are relatively slow when it comes to performing large amounts of calculations.
The Main Difference
GPU mining is the more powerful and lucrative version of CPU mining and yields a better return on investment. GPUs offer a higher level of processing power which in some cases are up to 800 times more than that of a CPU.
#mining #blockchain #ethereum #fintech #bitcoin #MiningOS #COS#CoinFly #CoinflyCOS #GPUmining #Software
submitted by coinfly to CoinFly [link] [comments]

Will crypto mining kill polar bears?

Bitcoin mining uses as much electricity as a small country. Many people hate it for this reason, its one of the more popular arguments against crypto currencies. Will crypto mining kill polar bears? I think not. I think it will help save polar bears. "Bear" with me.
Germany produces a significant part of its electricity from renewable energy: wind and solar. As we all know, these sources are intermittent and seasonal, as is demand. When the share of renewable energy in the overall energy mix becomes large enough, the result is inevitable: temporary and seasonal overcapacity. This isnt just theoretical, energy prices in germany and the UK where effectively negative last Christmas: http://www.businessinsider.com/renewable-power-germany-negative-electricity-cost-2017-12//?r=AU&IR=T
As explained in the above article, this isnt a rare freak occurrence, its expected and this will have to be become much more common if as a society, we want to transition away from fossil fuels. Because to do that we need (much) more renewable energy sources. A study I saw for Germany calculated they needed at least 89% more capacity, just to handle peak loads. But that also implies an incredible amount of overcapacity when demand isnt anywhere near peak, or when supply is above average due to favorable weather. Storing excess renewable electricity, in most places is very expensive and inefficient. So much so that its rarely even done. This is a major problem. Wind turbines are therefore feathered, solar panels turned off, excess electricity dumped in giant electrical heaters, offered for free or even offered at negative prices. Renewable energy may have become cheaper than other forms per KWH, but thats only if when you can sell all of your production. And its only true if the consumption occurs near the renewable energy source and not 100s or 1000s of kilometers further. Building capacity that can only be used 50% or even 10% of the time, or building infrastructure to store surplus electricity is still very expensive, as is transporting renewable energy over long distances.
I know what you're thinking. Mining wont help here, because mining intermittently is something that seems crazy today; miners keep their expensive machines on 24/7. But thats only because today, the overall cost structure of a (bitcoin) miner is heavily tilted towards hardware depreciation. Particularly for anyone paying retail prices for mining asics. This will change completely, because of two related reasons:
1) mining efficiency improvements will taper off.
Mining asics have been progressing extremely rapidly, from being based on CPUs and FPGA's, to using 20 year old obsolete 180nm process technology in the first asics, to state of the art 16nm chips today. This has resulted in at least a million fold improvement in efficiency in just a few years, which in turn lead to hardware investments that needed to be recovered in a few months or even weeks (!) before they were obsolete. Opportunity cost has been so high, that miners have literally chartered 747s to transport new mining equipment from the manufacturer in China to their datacenters in the US.
This cant and wont last. 12nm and 7nm asics are about to be produced, or are being produced now. It doesnt get better than that today, and it wont for many years to come. Moore's law is often cited to show efficiency will keep going up. That may be true, but until now the giant leaps we have seen had nothing to do with moore's law, which "only" predicts a doubling every 18 months. Moore's law is also hitting a brick wall (you cant scale transistors smaller than atoms), and only states that transistor density increases. Not that chips become more efficient or faster, which increasingly is no longer happening (new cpu's are getting more cores, but run at comparable speeds and comparable power consumption to previous generations).
What all this means is that these upcoming state of the art mining asics will remain competitive for many years, at least 3, possibly more than 5 years, and thus can be used and written off over that many years. But they will still consume electricity during all those years, shifting the overall costs from hardware to electricity.
2) Mining is still too profitable (for anyone making their own asics) and mining hardware is therefore still too expensive (for everyone else)
Miner hardware production rate simply hasnt yet been able to keep up with demand and soaring bitcoin prices. This leads to artificially low mining difficulty, making mining operationally profitable even with expensive electricity, and this also leads to exuberant hardware profit margins. You can see this easily, just look at the difficulty of bitcoin. When the price dropped by 70%, did you see a corresponding drop in difficulty? No, no drop at all, it just keeps growing exponentially. That only makes sense because we are not yet near saturation, or near marginal electricity costs for bitmain & Co. Its not worth it yet for them to turn off their miners. Its not even worth it yet for residential miners. Another piece of evidence for this, is bitmains estimated $4 billion profit. But mining is a zero sum game, over time, market forces will drive hardware prices and the mining itself to become only marginally profitable. We're clearly not close to that -yet. You might think so as a private miner, but thats only because you overpaid for your hardware.
Lets look at todays situation to get an idea. An Antminer S9 retails for $2300 and uses ~1300W at the wall. If you write off the hardware over a year, electricity and hardware costs balance out at an electricity price of $0.2/KWH. Anything below that, and hardware becomes the major cost. But how will that evolve?
As difficulty keeps going up, bitcoin mining revenue per asic will decline proportionally, until demand for mining asics will eventually taper off. To counter that, prices of asics will be lowered until they approach marginal production costs, which by my estimate is closer to $200 than $2000. Let say a 1300W S9 equivalent at that point gets sold at $400 leaving bitmain a healthy profit margin; that would mean each year a miner would spend 5x more on electricity than on hardware. Hardware will remain competitive for more than a single year though. Say you write it off over 3 years, now you're spending 15x more on electricity than on hardware. Intermittent mining like 50% of the time, but with free or virtually free electricity will become economical long before that.
By now, I will hopefully have convinced you of the viability of mining with intermittent excess renewable energy; intermittent mining with renewable energy will not only become viable, it will become the only way to do it profitably. Renewable energy at the source is already cheaper than any carbon burning source. Even in Quatar, they install solar plants because its cheaper than burning their own gas. Its transporting and storing the electricity that usually is the problem. Gas can easily be transported and stored. Wind and solar energy can not. And thats a massive problem for the industry. But mining doesnt need either. You can mine pretty much anywhere and anytime. All you need besides electricity, is a few containers and an internet connection for a solar plant or wind farm to monetize excess energy.
Moreover, mining is a zero sum game, a race to the bottom. As long as its profitable for green energy providers to deploy more hardware (which will be true as long as they can at least recover their hardware investment), difficulty will go up. Until it becomes unprofitable for anyone who has to pay for his electricity. No one gives oil, coal or gas away for free, so anyone depending on those sources of electricity, can not remain competitive. If bitcoin price were to go up so much, that there isnt enough renewable electricity production in the world to accommodate the hashrate, bitcoin miners will simply install more solar and wind farms. Not because of their ecological awareness, but because it makes the most financial sense. And during peak demand periods, why wouldnt they turn off the miners and sell their electricity to the grid for a premium?
Basically crypto mining would fund renewable energy development, and solve the exact problem laid out in the article linked above: provide overcapacity of renewable energy to handle grid peak loads, without needing any government funding or taxation on carbon based sources, without needing expensive and very inefficient energy storage. From the perspective of a green energy producer, energy storage, like a battery or hydrogen production, is just an expensive and intermediate step between producing electricity and getting paid for that electricity. Crypto mining will do the same thing, converting excess electricity in to cash, only much more efficiently.
TL:DR, deploying more renewable electricity overcapacity is both very expensive and very necessary if we want to save polar bears. Financing for these large scale green energy projects will either have to come from tax payer money to store or subsidise the largely unused excess electricity, or it will come from crypto mining. Market forces will drive crypto mining to use the cheapest energy. Renewable energy already is cheaper per KWH than carbon based power, and nothing is cheaper than excess and thus free (or negative value) renewable energy. Bitcoin mining's carbon foot print will therefore become ~zero. If you take in to account the effect of financing and subsidizing large scale renewable energy development that can also be used to supply the grid during peak demand periods, its carbon footprint will be hugely negative.
BTW, if you wonder what Blockchains LLC is going to do with 61K acres near Tesla's factory; my guess is solar plants and crypto mining. Expect to see renewable energy development and crypto mining to merge in to one single industry. Check out envion to get a glimpse of this future. Im not endorsing their token as an investment, I havent researched it at all, but the market they are going after is a very real one and its about to explode.
submitted by Vertigo722 to CryptoCurrency [link] [comments]

howmanyconfs.com - How does the security of different Proof-of-Work blockchains compare to Bitcoin?

https://howmanyconfs.com
Original post in Bitcoin here: https://np.reddit.com/Bitcoin/comments/biokgy/howmanyconfscom_how_does_the_security_of/

https://github.com/lukechilds/howmanyconfs.com/raw/mastescreenshot.png

How are these values calculated?

It's easy to compare blockchain hashrates when the Proof-of-Work algorithm is the same. For example if Bitcoin has a hashrate of SHA-256 @ 40 PH/s and Bitcoin Cash has a hashrate of SHA-256 @ 2 PH/s, it's easy to see that for a given period of time the Bitcoin blockchain will have 20x (40/2) the amount of work securing it than the Bitcoin Cash blockchain. Or to say that differently, you need to wait for 20x more Bitcoin Cash confirmations before an equivalent amount of work has been done compared to the Bitcoin blockchain. So 6 Bitcoin confirmations would be roughly equivalent to 120 Bitcoin Cash confirmations in the amount of work done.
However if the Proof-of-Work algorithms are different, how can we compare the hashrate? If we're comparing Bitcoin (SHA-256 @ 40 PH/s) against Litecoin (Scrypt @ 300 TH/s), the hashes aren't equal, one round of SHA-256 is not equivalent to one round of Scrypt.
What we really want to know is how much energy is being consumed to provide the current hash rate. Literal energy, as in joules or kilowatt hours. It would be great if we had a universal metric across blockchains like kWh/s to measure immutability.
However that's fairly hard to calculate, we need to know the average power consumption of the average device used to mine. For GPU/CPU mined Proof-of-Work algorithms this varies greatly. For ASIC mined Proof-of-Work algorithms it varies less, however it's likely that ASIC manufacturers are mining with next generation hardware long before the public is made aware of them, which we can't account for.
There's no automated way to get this data and no reliable data source to scrape it from. We'd need to manually research all mining hardware and collate the data ourself. And as soon as newer mining hardware comes out our results will be outdated.
Is there a simpler way to get an estimated amount of work per blockchain in a single metric we can use for comparisons?
Yeah, there is, we can use NiceHash prices to estimate the cost in $ to secure a blockchain for a given timeframe. This is directly comparable across blockchains and should be directly proportionate to kWh/s, because after all, the energy needs to be paid for in $.
How can we estimate this?
Now we have an estimated total Proof-of-Work metric measured in dollars per second ($/s).
The $/s metric may not be that accurate. Miners will mark up the cost when reselling on NiceHash and we're making the assumption that NiceHash supply is infinite. You can't actually rent 100% of Bitcoin's hashpower from NiceHash, there isn't enough supply.
However that's not really an issue for this metric, we aren't trying to calculate the theoretical cost to rent an additional 100% of the hashrate, we're trying to get a figure that allows us to compare the cost of the current total hashrate accross blockchains. Even if the exact $ value we end up with is not that accurate, it should still be proportionate to kWh/s. This means it's still an accurate metric to compare the difference in work done over a given amount of time between blockchains.
So how do we compare these values between blockchains?
Once we've done the above calculations and got a $/s cost for each blockchain, we just need to factor in the average block time and calculate the total $ cost for a given number of confirmations. Then see how much time is required on the other blockchain at it's $/s value to equal the total cost.
So to calculate how many Litecoin confirmations are equivalent to 6 Bitcoin confirmations we would do:
Therefore we can say that 240 Litecoin confirmations are roughly equal to 6 Bitcoin confirmations in total amount of work done.

Notes

$/s doesn't mean what it sounds like it means.

The $/s values should not be taken as literal costs.
For example:
This is does not mean you could do a 51% attack on Bitcoin and roll back 6 blocks for a cost of $360,000. An attack like that would be much more expensive.
The $/s value is a metric to compare the amount of work at the current hashrate between blockchains. It is not the same as the cost to add hashrate to the network.
When adding hashrate to a network the cost will not scale linearly with hashrate. It will jump suddenly at certain intervals.
For example, once you've used up the available hashrate on NiceHash you need to add the costs of purchasing ASICs, then once you've bought all the ASICs in the world, you'd need to add the costs of fabricating your own chips to keep increasing hashrate.

These metrics are measuring "work done", not security.

More "work done" doesn't necessarily mean "more security".
For example take the following two blockchains:
Bitcoin Cash has a higher $/s value than Zcash so we can deduce it has more "work done" over a given timeframe than Zcash. More kWh/s are required to secure it's blockchain. However does that really mean it's safer?
Zcash is the dominant blockchain for it's Proof-of-Work algorithm (Equihash). Whereas Bitcoin Cash isn't, it uses the same algorithm as Bitcoin. In fact just 5% of Bitcoin's hashrate is equivalent to all of Bitcoin Cash's hashrate.
This means the cost of a 51% attack against Bitcoin Cash could actually be much lower than a 51% attack against Zcash, even though you need to aquire more kWh/s of work, the cost to aquire those kWh/s will likely be lower.
To attack Bitcoin Cash you don't need to acquire any hardware, you just need to convince 5% of the Bitcoin hashrate to lend their SHA-256 hashpower to you.
To attack Zcash, you would likely need to fabricate your own Equihash ASICs, as almost all the Equihash mining hardware in the world is already securing Zcash.

Accurately calculating security is much more complicated.

These metrics give a good estimated value to compare the hashrate accross different Proof-of-Work blockchains.
However to calculate if a payment can be considered "finalised" involves many more variables.
You should factor in:
If the cryptocurrency doesn't dominate the Proof-of-Work it can be attacked more cheaply.
If the market cap or trading volume is really low, an attacker may crash the price of the currency before they can successfully double spend it and make a profit. Although that's more relevant in the context of exchanges rather than individuals accepting payments.
If the value of the transaction is low enough, it may cost more to double spend than an attacker would profit from the double spend.
Ultimately, once the cost of a double spend becomes higher than an attacker can expect to profit from the double spend, that is when a payment can probably be considered "finalised".
submitted by dyslexiccoder to CryptoCurrency [link] [comments]

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