Bitcoin Hashrate chart - BitInfoCharts

Nano How 4: Proof of Work

Tl;dr Every block in Nano contains a small Proof-of-Work (PoW) that is used to discourage spam. When a block contains a proof with a value below the threshold, it is discarded by nodes in the network. If the proof is valid, then the block is processed.

Proof-of-Work

The term PoW was coined in 1999 though the concept behind it dates from a 1993 journal article. It was initially designed to combat email spam, forcing the sender to incur a computational burden in order to have its email not be immediately rejected by servers. In theory, scaling this computation to a large number of emails (the case of spam) would be impractical.
PoW was largely popularized by Bitcoin, the first decentralized cryptocurrency network. Its purpose is to prevent double-spending by having miners compete for the solution of a [nowadays] very difficult math problem that requires a large number of blind attempts to complete.
There are several PoW functions available to use. For cryptocurrencies, the ones of interest can be categorized in two schemes:

Why

In Nano, PoW is used only to discourage spam transactions. Without it, and given the asynchronous nature of Nano’s block lattice, anyone would be able to push valid transactions to the network at a theoretically infinite rate, which would quickly saturate nodes in terms of bandwidth and other resources.
As such, and as we saw in a previous Nano How, every block must contain a small proof.
A commonly asked question is “Why do receive blocks require PoW?”. While the complete answer is more complex than what we intend to go on, it is discussed in detail here. Basically, it is used to discourage from creating high depth forks in the network.

How it works

The ideal proof of work is a mathematical problem that is really hard to calculate but simple to verify.
Nano currently uses blake2b as its PoW hash function, a CPU-bound algorithm, due to it being very fast to verify. It is noteworthy that this could change in the future should a more appropriate solution present itself.

https://preview.redd.it/rtsv38qhgwk21.png?width=594&format=png&auto=webp&s=e1c867d3030436751dc77a1b6434591ac52245e5

In order to enforce a new PoW for every block, the equation that the proof must satisfy depends on the previous block’s hash, as follows:

https://preview.redd.it/ghpc415lgwk21.png?width=618&format=png&auto=webp&s=f757b6d710ed2cc637e0688dc8ba0baf46a733c0

In this equation:
As the equation depends on the previous block, there is the special case of the first block (open block) of any account, in which the account’s public key is used instead (read the first Nano How).
While generating a proof requires, on average, 67108864 nonces to be tried (hence the same number of hashes), in order to verify a proof only a single blake2b hash is performed. This means that if it takes one second, on average, to obtain a proof, it will take 14.9 nanoseconds to verify it (assuming it doesn't take any time to start, which is a crude approximation).

Dynamic and Prioritized PoW

Up until version 18 (Dolphin) of the Nano node, all blocks were treated equally, in the sense that they were processed in a random order or in the order that they arrived. However, in cases of a large transaction rate in the network, nodes might get a great amount of blocks in their processing queue.
In the upcoming version 19 (Solidus), if the network becomes congested then blocks will start to be prioritized by the value of their PoW. Essentially, this means that in the case of network congestion, anyone can have their transaction be prioritized (e.g. if it’s urgent) by computing a higher value proof. It is simple to achieve this effect, as only the threshold has to be changed (to a higher value) when generating the PoW.
The intended effect with Dynamic PoW is to further discourage spamming the network. The most effective spam, currently, is pre-generating blocks and proofs, then pushing all of them to the network at the same time. In this event, the nodes in the network will quickly find that the block processing queues get saturated. By using prioritized PoW, non-attackers will still be able to transact at normal speeds by generating a larger value proof. Note that the attacker can’t change the value of their proof in this kind of spam, as they have already pre-generated all blocks and proofs.
Casual users of the Nano network can spend additional time pre-computing their next PoW so that their transactions are prioritised, while larger services can use auxiliary services such as DPoW to quickly provide PoW on demand for their transactions.

Previous Nano How articles

Nano How 1: Seeds and Keys
Nano How 2: Blocks and Lattices
Nano How 3: Light Wallets

Thanks

To jayycox for this and all previous Nano How articles.
submitted by DotcomL to nanocurrency [link] [comments]

What's the difference between Litcoin and Bitcoin?

In 2009, Satoshi Nakamoto launched bitcoin as the world’s first cryptocurrency. The code is open source, which means it can be modified by anyone and freely used for other projects. Many cryptocurrencies have launched with modified versions of this code, with varying levels of success.
Litecoin was announced in 2011 with the goal of being the ‘silver’ to bitcoin’s ‘gold’. At the time of writing, Litecoin has the highest market cap of any mined cryptocurrency, after bitcoin.
Here’s our guide to show you the crucial difference between bitcoin and litecoin.
Mining differences
Just like bitcoin, litecoin is a crytocurrency that is generated by mining. Litecoin was created in October 2011 by former Google engineer Charles Lee. The motivation behind its creation was to improve upon bitcoin. The key difference for end-users being the 2.5 minute time to generate a block, as opposed to bitcoin’s 10 minutes. Charles Lee now works for Coinbase, one of the most popular online bitcoin wallets.
ASIC Mining
For miners and enthusiasts though, litecoin holds a much more important difference to bitcoin, and that is its different proof of work algorithm. Bitcoin uses the SHA-256 hashing algorithm, which involves calculations that can be greatly accelerated in parallel processing. It is this characteristic that has given rise to the intense race in ASIC technology, and has caused an exponential increase in bitcoin’s difficulty level.
Litecoin, however, uses the scrypt algorithm – originally named as s-crypt, but pronounced as ‘script’. This algorithm incorporates the SHA-256 algorithm, but its calculations are much more serialised than those of SHA-256 in bitcoin. Scrypt favours large amounts of high-speed RAM, rather than raw processing power alone. As a result, scrypt is known as a ‘memory hard problem‘.
The consequences of using scrypt mean that there has not been as much of an ‘arms race’ in litecoin (and other scrypt currencies), because there is (so far) no ASIC technology available for this algorithm. However, this is soon to change, thanks to companies like Alpha Technologies, which is now taking preorders.
GPU mining
To highlight the difference in hashing power, at the time of writing, the total hashing rate of the bitcoin network is over 20,000 Terra Hashes per second, while litecoin is just 95,642 Mega Hashes per second.
For the time being, ‘state of the art’ litecoin mining rigs come in the form of custom PCs fitted with multiple graphics cards (ie: GPUs). These devices can handle the calculations needed for scrypt and have access to blisteringly fast memory built into their own circuit boards.
There was a time when people could use GPU mining for bitcoin, but ASICs have made this method not worth the effort.
If you are a developer, cryptocurrency investor, or just a curious person and want to invest some time to learn about cryptocurrency visit BTCNEWZ
Transaction differences
The main difference is that litecoin can confirm transactions must faster than bitcoin. The implications of that are as follows:
Transaction speed (or faster block time) and confirmation speed are often touted as moot points by many involved in bitcoin, as most merchants would allow zero-confirmation transactions for most purchases. It is necessary to bear in mind that a transaction is instant, it is just confirmed by the network as it propagates.
submitted by alifkhalil469 to BtcNewz [link] [comments]

AN INTRODUCTION TO DIGIBYTE

DigiByte

What are cryptocurrencies?
Cryptocurrencies are peer to peer technology protocols which rely on the block-chain; a system of decentralized record keeping which allows people to exchange unmodifiable and indestructible information “coins,” globally in little to no time with little to no fees – this translates into the exchange of value as these coins cannot be counterfeit nor stolen. This concept was started by Satoshi Nakamoto (allegedly a pseudonym for a single man or organization) whom described and coded Bitcoin in 2009.
What is DigiByte?
DigiByte (DGB) is a cryptocurrency like Bitcoin. It is also a decentralized applications protocol in a similar fashion to Neo or Ethereum.
DigiByte was founded and created by Jared Tate in 2014. DigiByte allows for fast (virtually instant) and low cost (virtually free) transactions. DigiByte is hard capped at 21 billion coins which will ever be mined, over a period of 21 years. DigiByte was never an ICO and was mined/created in the same way that Bitcoin or Litecoin initially were.
DigiByte is the fastest UTXO PoW scalable block-chain in the world. We’ll cover what this really means down below.
DigiByte has put forth and applied solutions to many of the problems that have plagued Bitcoin and cryptocurrencies in general – those being:
We will address these point by point in the subsequent sections.
The DigiByte Protocol
DigiByte maintains these properties through use of various technological innovations which we will briefly address below.
Why so many coins? 21 Billion
When initially conceived Bitcoin was the first of a kind! And came into the hands of a few! The beginnings of a coin such as Bitcoin were difficult, it had to go through a lot of initial growth pains which following coins did not have to face. It is for this reason among others why I believe Bitcoin was capped at 21 million; and why today it has thus secured a place as digital gold.
When Bitcoin was first invented no one knew anything about cryptocurrencies, for the inventor to get them out to the public he would have to give them away. This is how the first Bitcoins were probably passed on, for free! But then as interest grew so did the community. For them to be able to build something and create something which could go on to have actual value, it would have to go through a steady growth phase. Therefore, the control of inflation through mining was extremely important. Also, why the cap for Bitcoin was probably set so low - to allow these coins to amass value without being destroyed by inflation (from mining) in the same way fiat is today! In my mind Satoshi Nakamoto knew what he was doing when setting it at 21 million BTC and must have known and even anticipated others would take his design and build on top of it.
At DigiByte, we are that better design and capped at 21 billion. That's 1000 times larger than the supply of Bitcoin. Why though? Why is the cap on DigiByte so much higher than that of Bitcoin? Because DigiByte was conceived to be used not as a digital gold, nor as any sort of commodity, but as a real currency!
Today on planet Earth, we are approximately 7.6 billion people. If each person should want or need to use and live off Bitcoin; then equally split at best each person could only own 0.00276315789 BTC. The market cap for all the money on the whole planet today is estimated to have recently passed 80 trillion dollars. That means that each whole unit of Bitcoin would be worth approximately $3,809,523.81!
$3,809,523.81
This is of course in an extreme case where everyone used Bitcoin for everything. But even in a more conservative scenario the fact remains that with such a low supply each unit of a Bitcoin would become absurdly expensive if not inaccessible to most. Imagine trying to buy anything under a dollar!
Not only would using Bitcoin as an everyday currency be a logistical nightmare but it would be nigh impossible. For each Satoshi of a Bitcoin would be worth much, much, more than what is realistically manageable.
This is where DigiByte comes in and where it shines. DigiByte aims to be used world-wide as an international currency! Not to be hoarded in the same way Bitcoin is. If we were to do some of the same calculations with DigiByte we'd find that the numbers are a lot more reasonable.
At 7.6 billion people, each person could own 2.76315789474 DGB. Each whole unit of DGB would be worth approximately $3,809.52.
$3,809.52
This is much more manageable and remember in an extreme case where everyone used DigiByte for everything! I don't expect this to happen anytime soon, but with the supply of DigiByte it would allow us to live and transact in a much more realistic and fluid fashion. Without having to divide large numbers on our phone's calculator to understand how much we owe for that cup of coffee! With DigiByte it's simple, coffee cost 1.5 DGB, the cinema 2.8 DGB, a plane ticket 500 DGB!
There is a reason for DigiByte's large supply, and it is a good one!
Decentralisation
Decentralisation is an important concept for the block-chain and cryptocurrencies in general. This allows for a system which cannot be controlled nor manipulated no matter how large the organization in play or their intentions. DigiByte’s chain remains out of the reach of even the most powerful government. This allows for people to transact freely and openly without fear of censorship.
Decentralisation on the DigiByte block-chain is assured by having an accessible and fair mining protocol in place – this is the multi-algorithm (MultiAlgo) approach. We believe that all should have access to DigiByte whether through purchase or by mining. Therefore, DigiByte is minable not only on dedicated mining hardware such as Antminers, but also through use of conventional graphics cards. The multi-algorithm approach allows for users to mine on a variety of hardware types through use of one of the 5 mining algorithms supported by DigiByte. Those being:
Please note that these mining algorithms are modified and updated from time to time to assure complete decentralisation and thus ultimate security.
The problem with using only one mining algorithm such as Bitcoin or Litecoin do is that this allows for people to continually amass mining hardware and hash power. The more hash power one has, the more one can collect more. This leads to a cycle of centralisation and the creation of mining centres. It is known that a massive portion of all hash power in Bitcoin comes from China. This kind of centralisation is a natural tendency as it is cheaper for large organisations to set up in countries with inexpensive electricity and other such advantages which may be unavailable to the average miner.
DigiByte mitigates this problem with the use of multiple algorithms. It allows for miners with many different kinds of hardware to mine the same coin on an even playing field. Mining difficulty is set relative to the mining algorithm used. This allows for those with dedicated mining rigs to mine alongside those with more modest machines – and all secure the DigiByte chain while maintaining decentralisation.
Low Fees
Low fees are maintained in DigiByte thanks to the MultiAlgo approach working in conjunction with MultiShield (originally known as DigiShield). MultiShield calls for block difficulty readjustment between every single block on the chain; currently blocks last 15 seconds. This continuous difficulty readjustment allows us to combat any bad actors which may wish to manipulate the DigiByte chain.
Manipulation may be done by a large pool or a single entity with a great amount of hash power mining blocks on the chain; thus, increasing the difficulty of the chain. In some coins such as Bitcoin or Litecoin difficulty is readjusted every 2016 blocks at approximately 10mins each and 2mins respectively. Meaning that Bitcoin’s difficulty is readjusted about every two weeks. This system can allow for large bad actors to mine a coin and then abandon it, leaving it with a difficulty level far too high for the present hash rate – and so transactions can be frozen, and the chain stopped until there is a difficulty readjustment and or enough hash power to mine the chain. In such a case users may be faced with a choice - pay exorbitant fees or have their transactions frozen. In an extreme case the whole chain could be frozen completely for extended periods of time.
DigiByte does not face this problem as its difficulty is readjusted per block every 15 seconds. This innovation was a technological breakthrough and was adopted by several other coins in the cryptocurrency environment such as Dogecoin, Z-Cash, Ubiq, Monacoin, and Bitcoin Gold.
This difficulty readjustment along with the MultiAlgo approach allows DigiByte to maintain the lowest fees of any UTXO – PoW – chain in the world. Currently fees on the DigiByte block-chain are at about 0.0001 DGB per transaction of 100 000 DGB sent. This depends on the amount sent and currently 100 000 DGB are worth around $2000.00 with the fee being less than 0.000002 cents. It would take 500 000 transactions of 100 000 DGB to equal 1 penny’s worth. This was tested on a Ledger Nano S set to the low fees setting.
Fast transaction times
Fast transactions are ensured by the conjunctive use of the two aforementioned technology protocols. The use of MultiShield and MultiAlgo allows the mining of the DigiByte chain to always be profitable and thus there is always someone mining your transactions. MultiAlgo allows there to a greater amount of hash power spread world-wide, this along with 15 second block times allows for transactions to be near instantaneous. This speed is also ensured by the use DigiSpeed. DigiSpeed is the protocol by which the DigiByte chain will decrease block timing gradually. Initially DigiByte started with 30 second block times in 2014; which today are set at 15 seconds. This decrease will allow for ever faster and ever more transactions per block.
Robust security + The Immutable Ledger
At the core of cryptocurrency security is decentralisation. As stated before decentralisation is ensured on the DigiByte block chain by use of the MultiAlgo approach. Each algorithm in the MultiAlgo approach of DigiByte is only allowed about 20% of all new blocks. This in conjunction with MultiShield allows for DigiByte to be the most secure, most reliable, and fastest UTXO block chain on the planet. This means that DigiByte is a proof of work (PoW) block-chain where all transactional activities are stored on the immutable public ledger world-wide. In DigiByte there is no need for the Lightning protocol (although we have it) nor sidechains to scale, and thus we get to keep PoW’s security.
There are many great debates as to the robustness or cleanliness of PoW. The fact remains that PoW block-chains remain the only systems in human history which have never been hacked and thus their security is maximal.
For an attacker to divert the DigiByte chain they would need to control over 93% of all the hashrate on one algorithm and 51% of the other four. And so DigiByte is immune to the infamous 51% attack to which Bitcoin and Litecoin are vulnerable.
Moreover, the DigiByte block-chain is currently spread over 200 000 plus servers, computers, phones, and other machines world-wide. The fact is that DigiByte is one of the easiest to mine coins there is – this is greatly aided by the recent release of the one click miner. This allows for ever greater decentralisation which in turn assures that there is no single point of failure and the chain is thus virtually un-attackable.
On Chain Scalability
The biggest barrier for block-chains today is scalability. Visa the credit card company can handle around 2000 transactions per second (TPS) today. This allows them to ensure customer security and transactional rates nation-wide. Bitcoin currently sits at around 7 TPS and Litecoin at 28 TPS (56 TPS with SegWit). All the technological innovations I’ve mentioned above come together to allow for DigiByte to be the fastest PoW block-chain in the world and the most scalable.
DigiByte is scalable because of DigiSpeed, the protocol through which block times are decreased and block sizes are increased. It is known that a simple increase in block size can increase the TPS of any block-chain, such is the case with Bitcoin Cash. This is however not scalable. The reason a simple increase in block size is not scalable is because it would eventually lead to some if not a great amount of centralization. This centralization occurs because larger block sizes mean that storage costs and thus hardware cost for miners increases. This increase along with full blocks – meaning many transactions occurring on the chain – will inevitably bar out the average miner after difficulty increases and mining centres consolidate.
Hardware cost, and storage costs decrease over time following Moore’s law and DigiByte adheres to it perfectly. DigiSpeed calls for the increase in block sizes and decrease in block timing every two years by a factor of two. This means that originally DigiByte’s block sizes were 1 MB at 30 seconds each at inception in 2014. In 2016 DigiByte increased block size by two and decreased block timing by the same factor. Perfectly following Moore’s law. Moore’s law dictates that in general hardware increases in power by a factor of two while halving in cost every year.
This would allow for DigiByte to scale at a steady rate and for people to adopt new hardware at an equally steady rate and reasonable expense. Thus so, the average miner can continue to mine DigiByte on his algorithm of choice with entry level hardware.
DigiByte was one of the first block chains to adopt segregated witness (SegWit in 2017) a protocol whereby a part of transactional data is removed and stored elsewhere to decrease transaction data weight and thus increase scalability and speed. This allows us to fit more transactions per block which does not increase in size!
DigiByte currently sits at 560 TPS and could scale to over 280 000 TPS by 2035. This dwarfs any of the TPS capacities; even projected/possible capacities of some coins and even private companies. In essence DigiByte could scale worldwide today and still be reliable and robust. DigiByte could even handle the cumulative transactions of all the top 50 coins in coinmarketcap.com and still run smoothly and below capacity. In fact, to max out DigiByte’s actual maximum capacity (today at 560 TPS) you would have to take all these transactions and multiply them by a factor of 10!
Oher Uses for DigiByte
Note that DigiByte is not only to be used as a currency. Its immense robustness, security and scalability make it ideal for building decentralised applications (DAPPS) which it can host. DigiByte can in fact host DAPPS and even centralised versions which rely on the chain which are known as Digi-Apps. This application layer is also accompanied by a smart contract layer.
Thus, DigiByte could host several Crypto Kitties games and more without freezing out or increasing transaction costs for the end user.
Currently there are various DAPPS being built on the DigiByte block-chain, these are done independently of the DigiByte core team. These companies are simply using the DigiByte block-chain as a utility much in the same way one uses a road to get to work. One such example is Loly – a Tinderesque consensual dating application.
DigiByte also hosts a variety of other platform projects such as the following:
The DigiByte Foundation
As previously mentioned DigiByte was not an ICO. The DigiByte foundation was established in 2017 by founder Jared Tate. Its purpose is as a non-profit organization dedicated to supporting and developing the DigiByte block-chain.
DigiByte is a community effort and a community coin, to be treated as a public resource as water or air. Know that anyone can work on DigiByte, anyone can create, and do as they wish. It is a permissionless system which encourages innovation and creation. If you have an idea and or would like to get help on your project do not hesitate to contact the DigiByte foundation either through the official website and or the telegram developer’s channel.
For this reason, it is ever more important to note that the DigiByte foundation cannot exist without public support. And so, this is the reason I encourage all to donate to the foundation. All funds are used for the maintenance of DigiByte servers, marketing, and DigiByte development.
DigiByte Resources and Websites
DigiByte
Wallets
Explorers
Please refer to the sidebar of this sub-reddit for more resources and information.
Edit - Removed Jaxx wallet.
Edit - A new section was added to the article: Why so many coins? 21 Billion
Edit - Adjusted max capacity of DGB's TPS - Note it's actually larger than I initially calculated.
Edit – Grammar and format readjustment
Hello,
I hope you’ve enjoyed my article, I originally wrote this for the reddit sub-wiki where it generally will most likely, probably not, get a lot of attention. So instead I've decided to make this sort of an introductory post, an open letter, to any newcomers to DGB or for those whom are just curious.
I tried to cover every aspect of DGB, but of course I may have forgotten something! Please leave a comment down below and tell me why you're in DGB? What convinced you? Me it's the decentralised PoW that really convinced me. Plus, just that transaction speed and virtually no fees! Made my mouth water!
-Dereck de Mézquita
I'm a student typing this stuff on my free time, help me pay my debts? Thank you!
D64fAFQvJMhrBUNYpqUKQjqKrMLu76j24g
https://digiexplorer.info/address/D64fAFQvJMhrBUNYpqUKQjqKrMLu76j24g
submitted by xeno_biologist to Digibyte [link] [comments]

IRC Log from Ravencoin Open Developer Meeting - Aug 24, 2018

[14:05] <@wolfsokta> Hello Everybody, sorry we're a bit late getting started
[14:05] == block_338778 [[email protected]/web/freenode/ip.72.214.222.226] has joined #ravencoin-dev
[14:06] <@wolfsokta> Here are the topics we would like to cover today • 2.0.4 Need to upgrade - What we have done to communicate to the community • Unique Assets • iOS Wallet • General Q&A
[14:06] == Chatturga changed the topic of #ravencoin-dev to: 2.0.4 Need to upgrade - What we have done to communicate to the community • Unique Assets • iOS Wallet • General Q&A
[14:06] <@wolfsokta> Daben, could you mention what we have done to communicate the need for the 2.0.4 upgrade?
[14:07] == hwhwhsushwban [[email protected]/web/freenode/ip.172.58.37.35] has joined #ravencoin-dev
[14:07] <@wolfsokta> Others here are free to chime in where they saw the message first.
[14:07] == hwhwhsushwban [[email protected]/web/freenode/ip.172.58.37.35] has quit [Client Quit]
[14:08] Whats up bois
[14:08] hi everyone
[14:08] hi hi
[14:08] <@wolfsokta> Discussing the 2.0.4 update and the need to upgrade.
[14:08] <@Chatturga> Sure. As most of you are aware, the community has been expressing concerns with the difficulty oscillations, and were asking that something be done to the difficulty retargeting. Many people submitted suggestions, and the devs decided to implement DGW.
[14:09] <@Tron> I wrote up a short description of why we're moving to a new difficulty adjustment. https://medium.com/@tronblack/ravencoin-dark-gravity-wave-1da0a71657f7
[14:09] <@Chatturga> I have made posts on discord, telegram, bitcointalk, reddit, and ravencointalk.org from testnet stages through current.
[14:10] <@Chatturga> If there are any other channels that can reach a large number of community members, I would love to have more.
[14:10] <@wolfsokta> Thanks Tron, that hasn't been shared to the community at large yet, but folks feel free to share it.
[14:10] When was this decision made and by whom and how?
[14:10] <@Chatturga> I have also communicated with the pool operators and exchanges about the update. Of all of the current pools, only 2 have not yet updated versions.
[14:11] <@wolfsokta> The decision was made by the developers through ongoing requests for weeks made by the community.
[14:12] <@wolfsokta> Evidence was provided by the community of the damages that could be caused to projects when the wild swings continue.
[14:12] So was there a meeting or vote? How can people get invited
[14:12] <@Tron> It was also informed by my conversations with some miners that recommended that we make the change before the coin died. They witnessed similar oscillations from which other coins never recovered.
[14:13] only two pools left to upgrade is good, what about the exchanges? Any word on how many of those have/have not upgraded?
[14:13] <@wolfsokta> We talked about here in our last meeting Bruce_. All attendees were asked if they had any questions or concerns.
[14:13] == blondfrogs [[email protected]/web/freenode/ip.185.245.87.219] has joined #ravencoin-dev
[14:13] == roshii [[email protected]/web/freenode/ip.41.251.25.100] has joined #ravencoin-dev
[14:13] sup roshii long time no see
[14:14] <@Chatturga> Bittrex, Cryptopia, and IDCM have all either updated or have announced their intent to update.
[14:14] == wjcgiwgu283ik3cj [[email protected]/web/freenode/ip.172.58.37.35] has joined #ravencoin-dev
[14:15] sup russki
[14:15] what's the status here?
[14:15] I don’t think that was at all clear from the last dev meeting
[14:15] I can’t be the only person who didn’t understand it
[14:15] <@wolfsokta> Are there any suggestions on how to communicate the need to upgrade even further? I am concerned that others might also not understand.
[14:17] I’m not sold on the benefit and don’t understand the need for a hard fork — I think it’s a bad precedent to simply go rally exchanges to support a hard fork with little to no discussion
[14:17] so just to note, the exchanges not listed as being upgraded or have announced their intention to upgrade include: qbtc, upbit, and cryptobridge (all with over $40k usd volume past 24 hours according to coinmarketcap)
[14:18] <@wolfsokta> I don't agree that there was little or no discussion at all.
[14:19] <@wolfsokta> Looking back at our meeting notes from two weeks ago "fork" was specifically asked about by BrianMCT.
[14:19] If individual devs have the power to simple decide to do something as drastic as a hard fork and can get exchanges and miners to do it that’s got a lot of issues with centralization
[14:19] <@wolfsokta> It had been implemented on testnet by then and discussed in the community for several weeks before that.
[14:19] == under [[email protected]/web/freenode/ip.72.200.168.56] has joined #ravencoin-dev
[14:19] howdy
[14:19] Everything I’ve seen has been related to the asset layer
[14:19] I have to agree with Bruce_, though I wasn't able to join the last meeting here. That said I support the fork
[14:20] Which devs made this decision to do a fork and how was it communicated?
[14:20] well mostly the community made the decision
[14:20] Consensus on a change is the heart of bitcoin development and I believe the devs have done a great job building that consensus
[14:20] a lot of miners were in uproar about the situation
[14:20] <@wolfsokta> All of the devs were supporting the changes. It wasn't done in isolation at all.
[14:21] This topic has been a huge discussion point within the RVN mining community for quite some time
[14:21] the community and miners have been having issues with the way diff is adjusted for quite some time now
[14:21] Sure I’m well aware of that -
[14:21] Not sold on the benefits of having difficulty crippled by rented hashpower?
[14:21] The community saw a problem. The devs got together and talked about a solution and implemented a solution
[14:21] I’m active in the community
[14:22] So well aware of the discussions on DGW etc
[14:22] Hard fork as a solution to a problem community had with rented hashpower (nicehash!!) sounds like the perfect decentralized scenario!
[14:23] hard forks are very dangerous
[14:23] mining parties in difficulty drops are too
[14:23] <@wolfsokta> Agreed, we want to keep them to an absolute minimum.
[14:23] But miners motivation it’s the main vote
[14:24] What would it take to convince you that constantly going from 4 Th/s to 500 Gh/s every week is worse for the long term health of the coin than the risk of a hard fork to fix it?
[14:24] == Tron [[email protected]/web/freenode/ip.173.241.144.77] has quit [Ping timeout: 252 seconds]
[14:24] This hardfork does include the asset layer right? if so why is it being delayed in implementation?
[14:24] <@wolfsokta> Come back Tron!
[14:24] coudl it have been implement through bip9 voting?
[14:24] also hard fork is activated by the community! that's a vote thing!
[14:24] @mrsushi to give people time to upgrade their wallet
[14:25] @under, it would be much hard to keep consensus with a bip9 change
[14:25] <@wolfsokta> We investigated that closely Under.
[14:25] == Tron [[email protected]/web/freenode/ip.173.241.144.77] has joined #ravencoin-dev
[14:25] <@wolfsokta> See Tron's post for more details about that.
[14:25] <@spyder_> Hi Tron
[14:25] <@wolfsokta> https://medium.com/@tronblack/ravencoin-dark-gravity-wave-1da0a71657f7
[14:25] Sorry about that. Computer went to sleep.
[14:26] I'm wrong
[14:26] 2 cents. the release deadline of october 31st puts a bit of strain on getting code shipped. (duh). but fixing daa was important to the current health of the coin, and was widely suppported by current mining majority commuity. could it have been implemented in a different manner? yes . if we didnt have deadlines
[14:27] == wjcgiwgu283ik3cj [[email protected]/web/freenode/ip.172.58.37.35] has quit [Quit: Page closed]
[14:27] sushi this fork does not include assets. it's not being delayed though, we're making great progress for an Oct 31 target
[14:28] I don’t see the urgency but my vote doesn’t matter since my hash power is still CPUs
[14:28] <@wolfsokta> We're seeing the community get behind the change as well based on the amount of people jumping back in to mine through this last high difficulty phase.
[14:28] So that will be another hardfork?
[14:28] the fork does include the asset code though set to activate on oct 30th
[14:28] yes
[14:29] <@wolfsokta> Yes, it will based on the upgrade voting through the BIP9 process.
[14:29] I wanted to ask about burn rates from this group: and make a proposal.
[14:29] we're also trying hard to make it the last for awhile
[14:29] Can you clear up the above — there will be this one and another hard fork?
[14:29] <@wolfsokta> Okay, we could discuss that under towards the end of the meeting.
[14:30] If this one has the asset layer is there something different set for October
[14:30] <@wolfsokta> Yes, there will be another hard fork on October 31st once the voting process is successful.
[14:31] <@wolfsokta> The code is in 2.0.4 now and assets are active on testnet
[14:31] Bruce, the assets layer is still being worked on. Assets is active on mainnet. So in Oct 31 voting will start. and if it passes, the chain will fork.
[14:31] this one does NOT include assets for mainnet Bruce -- assets are targeted for Oct 31
[14:31] not***
[14:31] not active****
[14:31] correct me if I'm wrong here, but if everyone upgrades to 2.0.4 for this fork this week, the vote will automatically pass on oct 31st correct? nothing else needs to be done
[14:31] Will if need another download or does this software download cover both forks?
[14:31] <@wolfsokta> Correct Urgo
[14:32] thats how the testnet got activated and this one shows "asset activation status: waiting until 10/30/2018 20:00 (ET)"
[14:32] Will require another upgrade before Oct 31
[14:32] thank you for the clarification wolfsokta
[14:32] <@wolfsokta> It covers both forks, but we might have additional bug fixes in later releases.
[14:32] So users DL one version now and another one around October 30 which activates after that basically?
[14:33] I understand that, but I just wanted to make it clear that if people upgrade to this version for this fork and then don't do anything, they are also voting for the fork on oct 31st
[14:33] Oh okay — one DL?
[14:33] Bruce, Yes.
[14:33] Ty
[14:33] well there is the issue that there maybe some further consensus bugs dealing with the pruneability of asset transactions that needs to be corrected between 2.0.4 and mainnet. so i would imagine that there will be further revisions required to upgrade before now and october 31
[14:33] @under that is correct.
[14:34] I would highly recommend bumping the semver up to 3.0.0 for the final pre 31st release so that the public know to definitely upgrade
[14:34] @under +1
[14:35] out of curiosity, have there been many bugs found with the assets from the version released in july for testnet (2.0.3) until this version? or is it solely a change to DGW?
[14:35] <@wolfsokta> That's not a bad idea under.
[14:35] <@spyder_> @under good idea
[14:35] @urgo. Bugs are being found and fixed daily.
[14:35] Any time the protocol needs to change, there would need to be a hard fork (aka upgrade). It is our hope that we can activate feature forks through the BIP process (as we are doing for assets). Mining pools and exchanges will need to be on the newest software at the point of asset activation - should the mining hash power vote for assets.
[14:35] blondfrogs: gotcha
[14:35] There have been bugs found (and fixed). Testing continues. We appreciate all the bug reports you can give us.
[14:36] <@wolfsokta> Yes! Thank you all for your help in the community.
[14:37] (pull requests with fixes and test coverage would be even better!)
[14:37] asset creation collision is another major issue. current unfair advantage or nodes that fore connect to mining pools will have network topologies that guarantee acceptance. I had discussed the possibility of fee based asset creation selection and i feel that would be a more equal playing ground for all users
[14:38] *of nodes that force
[14:38] <@wolfsokta> What cfox said, we will always welcome development help.
[14:38] So just to make sure everyone know. When assets is ready to go live on oct 31st. Everyone that wants to be on the assets chain without any problems will have to download the new binary.
[14:39] <@wolfsokta> The latest binary.
[14:39] under: already in the works
[14:39] excellent to hear
[14:39] == UserJonPizza [[email protected]/web/freenode/ip.24.218.60.237] has joined #ravencoin-dev
[14:39] <@wolfsokta> Okay, we've spent a bunch of time on that topic and I think it was needed. Does anybody have any other suggestions on how to get the word out even more?
[14:40] maybe preface all 2.0.X releases as pre-releases... minimize the number of releases between now and 3.0 etc
[14:41] <@wolfsokta> Bruce_ let's discuss further offline.
[14:41] wolfsokta: which are the remaining two pools that need to be upgraded? I've identified qbtc, upbit, and cryptobridge as high volume exchanges that haven't said they were going to do it yet
[14:41] so people can help reach out to them
[14:41] f2pool is notoriously hard to contact
[14:41] are they on board?
[14:42] <@wolfsokta> We could use help reaching out to QBTC and Graviex
[14:42] I can try to contact CB if you want?
[14:42] <@Chatturga> The remaining pools are Ravenminer and PickAxePro.
[14:42] <@Chatturga> I have spoken with their operators, the update just hasnt been applied yet.
[14:42] ravenminer is one of the largest ones too. If they don't upgrade that will be a problem
[14:42] okay good news
[14:42] (PickAxePro sounds like a Ruby book)
[14:43] I strongly feel like getting the word out on ravencoin.org would be beneficial
[14:44] that site is sorely in need of active contribution
[14:44] Anyone can volunteer to contribute
[14:44] <@wolfsokta> Okay, cfox can you talk about the status of unique assets?
[14:44] sure
[14:45] <@wolfsokta> I'll add website to the end of our topics.
[14:45] code is in review and will be on the development branch shortly
[14:45] would it make sense to have a page on the wiki (or somewhere else) that lists the wallet versions run by pools & exchanges?
[14:45] will be in next release
[14:45] furthermore, many sites have friendly link to the standard installers for each platform, if the site linked to the primary installers for each platform to reduce github newb confusion that would be good as well
[14:46] likely to a testnetv5 although that isn't settled
[14:46] <@wolfsokta> Thanks cfox.
[14:46] <@wolfsokta> Are there any questions about unique assets, and how they work?
[14:47] after the # are there any charachters you cant use?
[14:47] will unique assets be constrained by the asset alphanumeric set?
[14:47] ^
[14:47] <@Chatturga> @Urgo there is a page that tracks and shows if they have updated, but it currently doesnt show the actual version that they are on.
[14:47] a-z A-Z 0-9
[14:47] <@Chatturga> https://raven.wiki/wiki/Exchange_notifications#Pools
[14:47] There are a few. Mostly ones that mess with command-line
[14:47] you'll be able to use rpc to do "issueunique MATRIX ['Neo','Tank','Tank Brother']" and it will create three assets for you (MATRIX#Neo, etc.)
[14:47] @cfox - No space
[14:48] @under the unique tags have an expanded set of characters allowed
[14:48] Chatturga: thank you
[14:48] @UJP yes there are some you can't use -- I'll try to post gimmie a sec..
[14:49] Ok. Thank you much!
[14:49] 36^36 assets possible and 62^62 uniques available per asset?
[14:49] <@spyder_> std::regex UNIQUE_TAG_CHARACTERS("^[[email protected]$%&*()[\\]{}<>_.;?\\\\:]+$");
[14:50] regex UNIQUE_TAG_CHARACTERS("^[[email protected]$%&*()[\\]{}<>_.;?\\\\:]+$")
[14:50] oh thanks Mark
[14:51] <@wolfsokta> Okay, next up. I want to thank everybody for helping test the iOS wallet release.
[14:51] <@wolfsokta> We are working with Apple to get the final approval to post it to the App Store
[14:51] @under max asset length is 30, including unique tag
[14:51] Does the RVN wallet have any other cryptos or just RVN?
[14:52] == BruceFenton [[email protected]/web/freenode/ip.67.189.233.170] has joined #ravencoin-dev
[14:52] will the android and ios source be migrated to the ravenproject github?
[14:52] I've been adding beta test users. I've added about 80 new users in the last few days.
[14:52] <@wolfsokta> Just RVN, and we want to focus on adding the asset support to the wallet.
[14:53] == Bruce_ [[email protected]/web/freenode/ip.67.189.233.170] has quit [Ping timeout: 252 seconds]
[14:53] <@wolfsokta> Yes, the code will also be freely available on GitHub for both iOS and Android. Thank you Roshii!
[14:53] Would you consider the iOS wallet to be a more secure place for one's holdings than say, a Mac connected to the internet?
[14:53] will there be a chance of a more user freindly wallet with better graphics like the iOS on PC?
[14:53] the android wallet is getting updated for DGW, correct?
[14:53] <@wolfsokta> That has come up in our discussion Pizza.
[14:54] QT framework is pretty well baked in and is cross platform. if we get some qt gurus possibly
[14:54] Phones are pretty good because the wallet we forked uses the TPM from modern phones.
[14:54] Most important is to write down and safely store your 12 word seed.
[14:54] TPM?
[14:54] <@wolfsokta> A user friendly wallet is one of our main goals.
[14:55] TPM == Trusted Platform Module
[14:55] Ahhh thanks
[14:55] just please no electron apps. they are full of security holes
[14:55] <@spyder_> It is whats makes your stuffs secure
[14:55] not fit for crypto
[14:55] under: depends on who makes it
[14:55] The interface screenshots I've seen look like Bread/Loaf wallet ... I assume that's what was forked from
[14:55] ;)
[14:56] <@wolfsokta> @roshii did you see the question about the Android wallet and DGW?
[14:56] Yes, it was a fork of breadwallet. We like their security.
[14:56] chromium 58 is the last bundled electron engine and has every vuln documented online by google. so unless you patch every vuln.... methinks not
[14:56] Agreed, great choice
[14:57] <@wolfsokta> @Under, what was your proposal?
[14:58] All asset creation Transactions have a mandatory OP_CHECKLOCKTIMEVERIFY of 1 year(or some agreed upon time interval), and the 500 RVN goes to a multisig devfund, run by a custodial group. We get: 1) an artificial temporary burn, 2) sustainable community and core development funding for the long term, after OSTK/Medici 3) and the reintroduction of RVN supply at a fixed schedule, enabling the removal of the 42k max cap of total As
[14:58] *im wrong on the 42k figure
[14:58] <@wolfsokta> Interesting...
[14:59] <@wolfsokta> Love to hear others thoughts.
[14:59] Update: I posted a message on the CryptoBridge discord and one of their support members @stepollo#6276 said he believes the coin team is already aware of the fork but he would forward the message about the fork over to them right now anyway
[14:59] Ifs 42 million assets
[14:59] yep.
[15:00] I have a different Idea. If the 500 RVN goes to a dev fund its more centralized. The 500 RVN should go back into the unmined coins so miners can stay for longer.
[15:01] *without a hardfork
[15:01] <@wolfsokta> lol
[15:01] that breaks halving schedule, since utxos cant return to an unmined state.
[15:01] @UJP back into coinbase is interesting. would have to think about how that effects distribution schedule, etc.
[15:01] only way to do that would be to dynamicaly grow max supply
[15:02] and i am concerned already about the max safe integer on various platforms at 21 billion
[15:02] js chokes on ravencoin already
[15:02] <@wolfsokta> Other thoughts on Under's proposal? JS isn't a real language. ;)
[15:02] Well Bitcoin has more than 21 bn Sats
[15:02] Is there somebody who wants to volunteer to fix js.
[15:02] hahaha
[15:03] I honestly would hate for the coins to go to a dev fund. It doesn't seem like Ravencoin to me.
[15:03] Yep, but we're 21 billion x 100,000,000 -- Fits fine in a 64-bit integer, but problematic for some languages.
[15:03] <@wolfsokta> Thanks UJP
[15:04] <@wolfsokta> We're past time but I would like to continue if you folks are up for it.
[15:04] Yeah no coins can go anywhere centrality contorted like a dev fund cause that would mean someone has to run it and the code can’t decide that so it’s destined to break
[15:05] currently and long term with out the financial backing of development then improvements and features will be difficult. we are certainly thankful for our current development model. but if a skunkworks project hits a particular baseline of profitability any reasonable company would terminate it
[15:05] Yes let’s contibue for sure
[15:05] the alternative to a dev fund in my mind would be timelocking those funds back to the issuers change address
[15:06] But we can’t have dev built in to the code — it has to be open source like Bitcoin and monero and Litecoin - it’s got drawbacks but way more advantages- it’s the best model
[15:06] Dev funding
[15:06] i highly reccommend not reducing the utility of raven by removing permanently the supply
[15:07] == BW_ [[email protected]/web/freenode/ip.138.68.243.202] has joined #ravencoin-dev
[15:07] timelocking those funds accompllishes the same sacrifice
[15:07] @under timelocking is interesting too
[15:07] How exactly does timelocking work?
[15:07] <@wolfsokta> ^
[15:07] I mean you could change the price of assets with the Block reward halfing.
[15:07] == Roshiix [[email protected]/web/freenode/ip.105.67.2.212] has joined #ravencoin-dev
[15:08] funds cant be spent from an address until a certain time passes
[15:08] but in a what magical fairy land do people continue to work for free forever. funding development is a real issue... as much as some might philosphically disagree. its a reality
[15:08] You’d still need a centralized party to decide how to distribute the funds
[15:08] even unofficially blockstream supports bitcoin devs
[15:08] on chain is more transparent imho
[15:09] == Tron_ [[email protected]/web/freenode/ip.173.241.144.77] has joined #ravencoin-dev
[15:09] @UJP yes there are unlimited strategies. one factor that I think is v important is giving application developers a way to easily budget for projects which leads to flat fees
[15:09] If the project is a success like many of believe it will be, I believe plenty of people will gladly done to a dev fund. I don't think the 500 should be burned.
[15:09] *donate
[15:09] centralized conservatorship, directed by community voting process
[15:10] == Tron [[email protected]/web/freenode/ip.173.241.144.77] has quit [Ping timeout: 252 seconds]
[15:10] <@wolfsokta> Thanks Under, that's an interesting idea that we should continue to discuss in the community. You also mentioned the existing website.
[15:10] It would need to be something where everyone with a QT has a vote
[15:10] think his computer went to sleep again :-/
[15:10] I agree UJP
[15:10] with the website
[15:10] No that’s ico jargon — any development fund tied to code would have to be centralized and would therefor fail
[15:11] ^
[15:11] ^
[15:11] ^
[15:11] dashes model for funding seems to be pretty decentralized
[15:11] community voting etc
[15:11] Once you have a dev fund tied to code then who gets to run it? Who mediates disputes?
[15:11] oh well another discussion
[15:11] Dash has a CEO
[15:12] <@wolfsokta> Yeah, let's keep discussing in the community spaces.
[15:12] Dash does have a good model. It's in my top ten.
[15:12] having the burn go to a dev fund is absolute garbage
[15:12] These dev chats should be more target than broad general discussions — changing the entire nature of the coin and it’s economics is best discussed in the RIPs or other means
[15:13] <@wolfsokta> Yup, let's move on.
[15:13] just becuase existing implementation are garbage doesnt mean that all possible future governance options are garbage
[15:13] <@wolfsokta> To discussing the website scenario mentioned by under.
[15:13] the website needs work. would be best if it could be migrated to github as well.
[15:13] What about this: Anyone can issue a vote once the voting feature has been added, for a cost. The vote would be what the coins could be used for.
[15:14] features for the site that need work are more user friendly links to binaries
[15:14] <@wolfsokta> We investigated how bitcoin has their website in Github to make it easy for contributors to jump in.
[15:14] that means active maintenance of the site instead of its current static nature
[15:15] <@wolfsokta> I really like how it's static html, which makes it super simple to host/make changes.
[15:15] the static nature isn’t due to interface it’s due to no contributors
[15:15] no contribution mechanism has been offered
[15:15] github hosted would allow that
[15:16] We used to run the Bitcoin website from the foundation & the GitHub integration seemed to cause some issues
[15:16] its doesnt necessarily have to be hosted by github but the page source should be on github and contributions could easily be managed and tracked
[15:17] for example when a new release is dropped, the ability for the downlaods section to have platform specific easy links to the general installers is far better for general adoption than pointing users to github releases
[15:18] <@wolfsokta> How do people currently contribute to the existing website?
[15:18] they dont?
[15:18] We did that and it was a complete pain to host and keep working — if someone wants to volunteer to do that work hey can surely make the website better and continually updated — but they could do that in Wordpress also
[15:19] I’d say keep an eye out for volunteers and maybe we can get a group together who can improve the site
[15:19] == digitalvap0r-xmr [[email protected]/web/cgi-irc/kiwiirc.com/ip.67.255.25.134] has joined #ravencoin-dev
[15:19] And they can decide best method
[15:20] I host the source for the explorer on github and anyone can spin it up instantly on a basic aws node. changes can be made to interface etc, and allow for multilingual translations which have been offered by some community members
[15:20] there are models that work. just saying it should be looked at
[15:20] i gotta run thank you all for your contributions
[15:20] <@wolfsokta> I feel we should explore the source for the website being hosted in GitHub and discuss in our next dev meeting.
[15:21] <@Chatturga> Thanks Under!
[15:21] == under [[email protected]/web/freenode/ip.72.200.168.56] has quit [Quit: Page closed]
[15:21] <@wolfsokta> Thanks, we also need to drop soon.
[15:21] There is no official site so why care. Someone will do better than the next if RVN is worth it anyway. That's already the case.
[15:21] <@wolfsokta> Let's do 10 mins of open Q&A
[15:22] <@wolfsokta> Go...
[15:23] <@Chatturga> Beuller?
[15:24] No questions ... just a comment that the devs and community are great and I'm happy to be a part of it
[15:24] I think everyone moved to discord. I'll throw this out there. How confident is the dev team that things will be ready for oct 31st?
[15:24] <@wolfsokta> Alright! Thanks everybody for joining us today. Let's plan to get back together as a dev group in a couple of weeks.
[15:25] thanks block!
[15:25] <@wolfsokta> Urgo, very confident
[15:25] Please exclude trolls from discord who havent read the whitepaper
[15:25] great :)
[15:25] "things" will be ready..
[15:25] Next time on discord right?
[15:25] woah why discord?
[15:25] some of the suggestions here are horrid
[15:25] this is better less point
[15:25] == blondfrogs [[email protected]/web/freenode/ip.185.245.87.219] has quit [Quit: Page closed]
[15:25] Assets are working well on testnet. Plan is to get as much as we can safely test by Sept 30 -- this includes dev contributions. Oct will be heavy testing and making sure it is safe.
[15:26] people
[15:26] <@wolfsokta> Planning on same time, same IRC channel.
[15:26] == BW_ [[email protected]/web/freenode/ip.138.68.243.202] has quit [Quit: Page closed]
[15:26] @xmr any in particular?
[15:27] (or is "here" discord?)
[15:27] Cheers - Tron
[15:27] "Cheers - Tron" - Tron
submitted by Chatturga to Ravencoin [link] [comments]

The Nexus FAQ - part 1

Full formatted version: https://docs.google.com/document/d/16KKjVjQH0ypLe00aoTJ_hZyce7RAtjC5XHom104yn6M/
 

Nexus 101:

  1. What is Nexus?
  2. What benefits does Nexus bring to the blockchain space?
  3. How does Nexus secure the network and reach consensus?
  4. What is quantum resistance and how does Nexus implement this?
  5. What is Nexus’ Unified Time protocol?
  6. Why does Nexus need its own satellite network?
 

The Nexus Currency:

  1. How can I get Nexus?
  2. How much does a transaction cost?
  3. How fast does Nexus transfer?
  4. Did Nexus hold an ICO? How is Nexus funded?
  5. Is there a cap on the number of Nexus in existence?
  6. What is the difference between the Oracle wallet and the LLD wallet?
  7. How do I change from Oracle to the LLD wallet?
  8. How do I install the Nexus Wallet?
 

Types of Mining or Minting:

  1. Can I mine Nexus?
  2. How do I mine Nexus?
  3. How do I stake Nexus?
  4. I am staking with my Nexus balance. What are trust weight, block weight and stake weight?
 

Nexus 101:

1. What is Nexus (NXS)?
Nexus is a digital currency, distributed framework, and peer-to-peer network. Nexus further improves upon the blockchain protocol by focusing on the following core technological principles:
Nexus will combine our in-development quantum-resistant 3D blockchain software with cutting edge communication satellites to deliver a free, distributed, financial and data solution. Through our planned satellite and ground-based mesh networks, Nexus will provide uncensored internet access whilst bringing the benefits of distributed database systems to the world.
For a short video introduction to Nexus Earth, please visit this link
 
2. What benefits does Nexus bring to the blockchain space?
As Nexus has been developed, an incredible amount of time has been put into identifying and solving several key limitations:
Nexus is also developing a framework called the Lower Level Library. This LLL will incorporate the following improvements:
For information about more additions to the Lower Level Library, please visit here
 
3. How does Nexus secure the network and reach consensus?
Nexus is unique amongst blockchain technology in that Nexus uses 3 channels to secure the network against attack. Whereas Bitcoin uses only Proof-of-Work to secure the network, Nexus combines a prime number channel, a hashing channel and a Proof-of-Stake channel. Where Bitcoin has a difficulty adjustment interval measured in weeks, Nexus can respond to increased hashrate in the space of 1 block and each channel scales independently of the other two channels. This stabilizes the block times at ~50 seconds and ensures no single channel can monopolize block production. This means that a 51% attack is much more difficult to launch because an attacker would need to control all 3 channels.
Every 60 minutes, the Nexus protocol automatically creates a checkpoint. This prevents blocks from being created or modified dated prior to this checkpoint, thus protecting the chain from malicious attempts to introduce an alternate blockchain.
 
4. What is quantum resistance and how does Nexus implement it?
To understand what quantum resistance is and why it is important, you need to understand how quantum computing works and why it’s a threat to blockchain technology. Classical computing uses an array of transistors. These transistors form the heart of your computer (the CPU). Each transistor is capable of being either on or off, and these states are used to represent the numerical values 1 and 0.
Binary digits’ (bits) number of states depends on the number of transistors available, according to the formula 2n, where n is the number of transistors. Classical computers can only be in one of these states at any one time, so the speed of your computer is limited to how fast it can change states.
Quantum computers utilize quantum bits, “qubits,” which are represented by the quantum state of electrons or photons. These particles are placed into a state called superposition, which allows the qubit to assume a value of 1 or 0 simultaneously.
Superposition permits a quantum computer to process a higher number of data possibilities than a classical computer. Qubits can also become entangled. Entanglement makes a qubit dependant on the state of another, enabling quantum computing to calculate complex problems, extremely quickly.
One such problem is the Discrete Logarithm Problem which elliptic curve cryptography relies on for security. Quantum computers can use Shor’s algorithm to reverse a key in polynomial time (which is really really really fast). This means that public keys become vulnerable to quantum attack, since quantum computers are capable of being billions of times faster at certain calculations. One way to increase quantum resistance is to require more qubits (and more time) by using larger private keys:
Bitcoin Private Key (256 bit) 5Kb8kLf9zgWQnogidDA76MzPL6TsZZY36hWXMssSzNydYXYB9KF
Nexus Private Key (571 bit) 6Wuiv513R18o5cRpwNSCfT7xs9tniHHN5Lb3AMs58vkVxsQdL4atHTF Vt5TNT9himnCMmnbjbCPxgxhSTDE5iAzCZ3LhJFm7L9rCFroYoqz
Bitcoin addresses are created by hashing the public key, so it is not possible to decrypt the public key from the address; however, once you send funds from that address, the public key is published on the blockchain rendering that address vulnerable to attack. This means that your money has higher chances of being stolen.
Nexus eliminates these vulnerabilities through an innovation called signature chains. Signature chains will enable access to an account using a username, password and PIN. When you create a transaction on the network, you claim ownership of your signature chain by revealing the public key of the NextHash (the hash of your public key) and producing a signature from the one time use private key. Your wallet then creates a new private/public keypair, generates a new NextHash, including the corresponding contract. This contract can be a receive address, a debit, a vote, or any other type of rule that is written in the contract code.
This keeps the public key obscured until the next transaction, and by divorcing the address from the public key, it is unnecessary to change addresses in order to change public keys. Changing your password or PIN code becomes a case of proving ownership of your signature chain and broadcasting a new transaction with a new NextHash for your new password and/or PIN. This provides the ability to login to your account via the signature chain, which becomes your personal chain within the 3D chain, enabling the network to prove and disprove trust, and improving ease of use without sacrificing security.
The next challenge with quantum computers is that Grover’s algorithm reduces the security of one-way hash function by a factor of two. Because of this, Nexus incorporates two new hash functions, Skein and Keccak, which were designed in 2008 as part of a contest to create a new SHA3 standard. Keccak narrowly defeated Skein to win the contest, so to maximize their potential Nexus combines these algorithms. Skein and Keccak utilize permutation to rotate and mix the information in the hash.
To maintain a respective 256/512 bit quantum resistance, Nexus uses up to 1024 bits in its proof-of-work, and 512 bits for transactions.
 
5. What is the Unified Time protocol?
All blockchains use time-stamping mechanisms, so it is important that all nodes operate using the same clock. Bitcoin allows for up to 2 hours’ discrepancy between nodes, which provides a window of opportunity for the blockchain to be manipulated by time-related attack vectors. Nexus eliminates this vulnerability by implementing a time synchronization protocol termed Unified Time. Unified Time also enhances transaction processing and will form an integral part of the 3D chain scaling solution.
The Unified Time protocol facilitates a peer-to-peer timing system that keeps all clocks on the network synchronized to within a second. This is seeded by selected nodes with timestamps derived from the UNIX standard; that is, the number of seconds since January 1st, 1970 00:00 UTC. Every minute, the seed nodes report their current time, and a moving average is used to calculate the base time. Any node which sends back a timestamp outside a given tolerance is rejected.
It is important to note that the Nexus network is fully synchronized even if an individual wallet displays something different from the local time.
 
6. Why does Nexus need its own satellite network?
One of the key limitations of a purely electronic monetary system is that it requires a connection to the rest of the network to verify transactions. Existing network infrastructure only services a fraction of the world’s population.
Nexus, in conjunction with Vector Space Systems, is designing communication satellites, or cubesats, to be launched into Low Earth Orbit in 2019. Primarily, the cubesat mesh network will exist to give Nexus worldwide coverage, but Nexus will also utilize its orbital and ground mesh networks to provide free and uncensored internet access to the world.
 

The Nexus Currency (NXS):

1. How can I get Nexus?
There are two ways you can obtain Nexus. You can either buy Nexus from an exchange, or you can run a miner and be rewarded for finding a block. If you wish to mine Nexus, please follow our guide found below.
Currently, Nexus is available on the following exchanges:
Nexus is actively reaching out to other exchanges to continue to be listed on cutting edge new financial technologies..
 
2. How much does a transaction cost?
Under Nexus, the fee structure for making a transaction depends on the size of your transaction. A default fee of 0.01 NXS will cover most transactions, and users have the option to pay higher fees to ensure their transactions are processed quickly.
When the 3D chain is complete and the initial 10-year distribution period finishes, Nexus will absorb these fees through inflation, enabling free transactions.
 
3. How fast does Nexus transfer?
Nexus reaches consensus approximately every ~ 50 seconds. This is an average time, and will in some circumstances be faster or slower. NXS currency which you receive is available for use after just 6 confirmations. A confirmation is proof from a node that the transaction has been included in a block. The number of confirmations in this transaction is the number that states how many blocks it has been since the transaction is included. The more confirmations a transaction has, the more secure its placement in the blockchain is.
 
4. Did Nexus hold an ICO? How is Nexus funded?
The Nexus Embassy, a 501(C)(3) not-for-profit corporation, develops and maintains the Nexus blockchain software. When Nexus began under the name Coinshield, the early blocks were mined using the Developer and Exchange (Ambassador) addresses, which provides funding for the Nexus Embassy.
The Developer Fund fuels ongoing development and is sourced by a 1.5% commission per block mined, which will slowly increase to 2.5% after 10 years. This brings all the benefits of development funding without the associated risks.
The Ambassador (renamed from Exchange) keys are funded by a 20% commission per block reward. These keys are mainly used to pay for marketing, and producing and launching the Nexus satellites.
When Nexus introduces developer and ambassador contracts, they will be approved, denied, or removed by six voting groups namely: currency, developer, ambassador, prime, hash, and trust.
Please Note: The Nexus Embassy reserves the sole right to trade, sell and or use these funds as required; however, Nexus will endeavor to minimize the impact that the use of these funds has upon the NXS market value.
 
5. Is there a cap on the number of NXS in existence?
After an initial 10-year distribution period ending on September 23rd, 2024, there will be a total of 78 million NXS. Over this period, the reward gradient for mining Nexus follows a decaying logarithmic curve instead of the reward halving inherent in Bitcoin. This avoids creating a situation where older mining equipment is suddenly unprofitable, encouraging miners to continue upgrading their equipment over time and at the same time reducing major market shocks on block halving events.
When the distribution period ends, the currency supply will inflate annually by a maximum of 3% via staking and by 1% via the prime and hashing channels. This inflation is completely unlike traditional inflation, which degrades the value of existing coins. Instead, the cost of providing security to the blockchain is paid by inflation, eliminating transaction fees.
Colin Cantrell - Nexus Inflation Explained
 
6. What is the difference between the LLD wallet and the Oracle wallet?
Due to the scales of efficiency needed by blockchain, Nexus has developed a custom-built database called the Lower Level Database. Since the development of the LLD wallet 0.2.3.1, which is a precursor to the Tritium updates, you should begin using the LLD wallet to take advantage of the faster load times and improved efficiency.
The Oracle wallet is a legacy wallet which is no longer maintained or updated. It utilized the Berkeley DB, which is not designed to meet the needs of a blockchain. Eventually, users will need to migrate to the LLD wallet. Fortunately, the wallet.dat is interchangeable between wallets, so there is no risk of losing access to your NXS.
 
7. How do I change from Oracle to the LLD wallet?
Step 1 - Backup your wallet.dat file. You can do this from within the Oracle wallet Menu, Backup Wallet.
Step 2 - Uninstall the Oracle wallet. Close the wallet and navigate to the wallet data directory. On Windows, this is the Nexus folder located at %APPDATA%\Nexus. On macOS, this is the Nexus folder located at ~/Library/Application Support/Nexus. Move all of the contents to a temporary folder as a backup.
Step 3 - Copy your backup of wallet.dat into the Nexus folder located as per Step 2.
Step 4 - Install the Nexus LLD wallet. Please follow the steps as outlined in the next section. Once your wallet is fully synced, your new wallet will have access to all your addresses.
 
8. How do I install the Nexus Wallet?
You can install your Nexus wallet by following these steps:
Step 1 - Download your wallet from www.nexusearth.com. Click the Downloads menu at the top and select the appropriate wallet for your operating system.
Step 2 - Unzip the wallet program to a folder. Before running the wallet program, please consider space limitations and load times. On the Windows OS, the wallet saves all data to the %APPDATA%\Nexus folder, including the blockchain, which is currently ~3GB.
On macOS, data is saved to the ~/Library/Application Support/Nexus folder. You can create a symbolic link, which will allow you to install this information in another location.
Using Windows, follow these steps:
On macOS, follow these steps:
Step 3 (optional) - Before running the wallet, we recommend downloading the blockchain database manually. Nexus Earth maintains a copy of the blockchain data which can save hours from the wallet synchronization process. Please go to www.nexusearth.com and click the Downloads menu.
Step 4 (optional) - Extract the database file. This is commonly found in the .zip or .rar format, so you may need a program like 7zip to extract the contents. Please extract it to the relevant directory, as outlined in step 2.
Step 5 - You can now start your wallet. After it loads, it should be able to complete synchronization in a short time. This may still take a couple of hours. Once it has completed synchronizing, a green check mark icon will appear in the lower right corner of the wallet.
Step 6 - Encrypt your wallet. This can be done within the wallet, under the Settings menu. Encrypting your wallet will lock it, requiring a password in order to send transactions.
Step 7 - Backup your wallet.dat file. This can be done from the File menu inside the wallet. This file contains the keys to the addresses in your wallet. You may wish to keep a secure copy of your password somewhere, too, in case you forget it or someone else (your spouse, for example) ever needs it.
You should back up your wallet.dat file again any time you create – or a Genesis transaction creates (see “staking” below) – a new address.
 

Types of Mining or Minting:

1.Can I mine Nexus?
Yes, there are 2 channels that you can use to mine Nexus, and 1 channel of minting:
Prime Mining Channel
This mining channel looks for a special prime cluster of a set length. This type of calculation is resistant to ASIC mining, allowing for greater decentralization. This is most often performed using the CPU.
Hashing Channel
This channel utilizes the more traditional method of hashing. This process adds a random nonce, hashes the data, and compares the resultant hash against a predetermined format set by the difficulty. This is most often performed using a GPU.
Proof of Stake (nPoS)
Staking is a form of mining NXS. With this process, you can receive NXS rewards from the network for continuously operating your node (wallet). It is recommended that you only stake with a minimum balance of 1000 NXS. It’s not impossible to stake with less, but it becomes harder to maintain trust. Losing trust resets the interest rate back to 0.5% per annum.
 
2. How do I mine Nexus?
As outlined above, there are two types of mining and 1 proof of stake. Each type of mining uses a different component of your computer to find blocks, the CPU or the GPU. Nexus supports CPU and GPU mining on Windows only. There are also third-party macOS builds available.
Please follow the instructions below for the relevant type of miner.
 
Prime Mining:
Almost every CPU is capable of mining blocks on this channel. The most effective method of mining is to join a mining pool and receive a share of the rewards based on the contribution you make. To create your own mining facility, you need the CPU mining software, and a NXS address. This address cannot be on an exchange. You create an address when you install your Nexus wallet. You can find the related steps under How Do I Install the Nexus Wallet?
Please download the relevant miner from http://nexusearth.com/mining.html. Please note that there are two different miner builds available: the prime solo miner and the prime pool miner. This guide will walk you through installing the pool miner only.
Step 1 - Extract the archive file to a folder.
Step 2 - Open the miner.conf file. You can use the default host and port, but these may be changed to a pool of your choice. You will need to change the value of nxs_address to the address found in your wallet. Sieve_threads is the number of CPU threads you want to use to find primes. Ptest_threads is the number of CPU threads you want to test the primes found by the sieve. As a general rule, the number of threads used for the sieve should be 75% of the threads used for testing.
It is also recommended to add the following line to the options found in the .conf file:
"experimental" : "true"
This option enables the miner to use an improved sieve algorithm which will enable your miner to find primes at a faster rate.
Step 3 - Run the nexus_cpuminer.exe file. For a description of the information shown in this application, please read this guide.
 
Hashing:
The GPU is a dedicated processing unit housed on-board your graphics card. The GPU is able to perform certain tasks extremely well, unlike your CPU, which is designed for parallel processing. Nexus supports both AMD and Nvidia GPU mining, and works best on the newer models. Officially, Nexus does not support GPU pool mining, but there are 3rd party miners with this capability.
The latest software for the Nvidia miner can be found here. The latest software for the AMD miner can be found here. The AMD miner is a third party miner. Information and advice about using the AMD miner can be found on our Slack channel. This guide will walk you through the Nvidia miner.
Step 1 - Close your wallet. Navigate to %appdata%\Nexus (~/Library/Application Support/Nexus on macOS) and open the nexus.conf file. Depending on your wallet, you may or may not have this file. If not, please create a new txt file and save it as nexus.conf
You will need to add the following lines before restarting your wallet:
Step 2 - Extract the files into a new folder.
Step 3 - Run the nexus.bat file. This will run the miner and deposit any rewards for mining a block into the account on your wallet.
For more information on either Prime Mining or Hashing, please join our Slack and visit the #mining channel. Additional information can be found here.
 
3. How do I stake Nexus?
Once you have your wallet installed, fully synchronized and encrypted, you can begin staking by:
After you begin staking, you will receive a Genesis transaction as your first staking reward. This establishes a Trust key in your wallet and stakes your wallet balance on that key. From that point, you will periodically receive additional Trust transactions as further staking rewards for as long as your Trust key remains active.
IMPORTANT - After you receive a Genesis transaction, backup your wallet.dat file immediately. You can select the Backup Wallet option from the File menu, or manually copy the file directly. If you do not do this, then your Nexus balance will be staked on the Trust key that you do not have backed up, and you risk loss if you were to suffer a hard drive failure or other similar problem. In the future, signature chains will make this precaution unnecessary.
 
4. I am staking with my Nexus balance. What are interest rate, trust weight, block weight, and stake weight?
These items affect the size and frequency of staking rewards after you receive your initial Genesis transaction. When staking is active, the wallet displays a clock icon in the bottom right corner. If you hover your mouse pointer over the icon, a tooltip-style display will open up, showing their current values.
Please remember to backup your wallet.dat file (see question 3 above) after you receive a Genesis transaction.
Interest Rate - The minting rate at which you will receive staking rewards, displayed as an annual percentage of your NXS balance. It starts at 0.5%, increasing to 3% after 12 months. The rate increase is not linear but slows over time. It takes several weeks to reach 1% and around 3 months to reach 2%.
With this rate, you can calculate the average amount of NXS you can expect to receive each day for staking.
Trust Weight - An indication of how much the network trusts your node. It starts at 5% and increases much more quickly than the minting (interest) rate, reaching 100% after one month. Your level of trust increases your stake weight (below), thus increasing your chances of receiving staking transactions. It becomes easier to maintain trust as this value increases.
Block Weight - Upon receipt of a Genesis transaction, this value will begin increasing slowly, reaching 100% after 24 hours. Every time you receive a staking transaction, the block weight resets. If your block weight reaches 100%, then your Trust key expires and everything resets (0.5% interest rate, 5% trust weight, waiting for a new Genesis transaction).
This 24-hour requirement will be replaced by a gradual decay in the Tritium release. As long as you receive a transaction before it decays completely, you will hold onto your key. This change addresses the potential of losing your trust key after months of staking simply because of one unlucky day receiving trust transactions.
Stake Weight - The higher your stake weight, the greater your chance of receiving a transaction. The exact value is a derived by a formula using your trust weight and block weight, which roughly equals the average of the two. Thus, each time you receive a transaction, your stake weight will reset to approximately half of your current level of trust.
submitted by scottsimon36 to nexusearth [link] [comments]

Will Vertcoin always be minable?

The recent jump in price above $5 caused a big increase in hashing power and difficulty, as a lot of people who previously had no interest in Vertcoin jumped on board.
As someone who had been mining continuously for months, I was left unable to mine. I kept suffering from this problem of the node saying "no shares yet" after my name.
Eventually I realised that my time to share had become so high, that the node didn't consider me to be contributing any more. It didn't matter that the price was higher, because I wasn't just earning fewer VTC, I was earning none at all. My miner was contributing hashes, but the time to get a share was too high, so once every 3 days I was lucky to be given 0.001 VTC a couple of times, until I was back to "no shares yet".
Now that the difficulty has dropped again, I can once again mine (as someone with just one graphics card).
This seems like something that is inevitable. Despite ASIC resistance, at some point it will only be profitable for big mining farms of thousands of miners in a country with low cost electricity to mine.
Which means my question is: what's the point of ASIC resistance?

Why is ASIC resistance important?

Bitcoin uses the SHA-256 hashing algorithm, which has now been around for many years and the algorithm hasn’t been changed since its genesis. This means that large hardware companies have created ASICs in order to mine at a very high rate compared to those who mine with their GPUs (graphics cards) and CPUs (processors) at home. As a result of this, the cryptocurrency’s difficulty increases and means that GPU mining isn’t profitable for many people. Therefore, people stop mining and the large companies control a lot of the hash power. A large amount of hashing power in the control of one entity can mean the network isn’t decentralised and therefore create 51% attacks. Learn more about 51% attacks here. [1]
It seems to me this is exactly what will happen anyway. At some point it will stop being profitable for the little guy to mine, and we saw a glimpse of it last week.
submitted by WizardryAwaits to vertcoin [link] [comments]

The /r/btc China Dispatch - Episode 5 - The Chinese Bitcoin Community Responds to the Possibility of a PoW Algorithm Change by Core

After a brief hiatus, the /btc Bitcoin Dispatch is back! In this installment of the Dispatch, we take a look at how the Chinese bitcoin community responded to SouperNerd’s recent summary of stirrings within the Core developer contingent regarding a possible change to Core’s PoW algorithm in the event of a hard fork of the bitcoin protocol supporting up to 2 MB blocks.
Your humble correspondent translated the above summary and posted it to 8btc.com. The post precipitated a lively discussion over the following couple of days and I have taken a sample of the responses and translated them into English below for your enjoyment. If you haven't done so, I recommend that you first read SouperNerd’s post here in order to better follow the discussion.
[Response 1]
Posted by ralsax
If they actually make such a change btc will basically be dead.
[Response 2]
Posted by Sword Meets Knife
So which do you guys think takes the voice of bitcoin holders into account: Core or Classic?
[Response 3]
Posted by Sword Meets Knife
If core never changes or is too slow to change, they will be made obsolete.
[Response 5]
Posted by vatten
If they change POW then they just become another altcoin.
[Response 8]
Posted by bling
BTC must pass through the inferno before it can be born anew.
[Response 11]
Posted by Ma_Ya
@vatten
What determines whether a crypto is an altcoin or not is not hashpower and it’s not PoW or PoS, but rather the number of supporters and the level of use. If the supporters and use don’t change then bitcoin is still bitcoin, no matter what changes are made.
[Response 14]
Posted by Dashenshi_Qiqiguai
Changing the algorithm will not resolve the centralization problem.
The reason that you have large mining operations is because you have miners who are willing to invest significant amounts of capital into the act of mining. As far as they are concerned, a mining rig is just a mining rig - you spend money on a mining rig to mine. What is the fundamental difference if it’s an ASIC rig or a graphics card? If the PoW algorithm was changed to a graphics card-friendly algorithm, miners who are willing to invest will buy a large number of graphics card-based mining rigs and will still take up the bulk of the hashing power.
[Response 16]
Posted by jb9802
This Core mafia won’t give up until they kill bitcoin. It’s a good thing that we still have Classic as an option. Let’s let Core fade into history.
[Response 18]
Posted by vatten
It seems like the the programmers think too highly of themselves. This is a problem that has been discussed countless times; once you change the algorithm you immediately become an altcoin:
A crypto without the support of a substantial amount of hashpower is an altcoin and is practically worthless. It’s not the case that a coin has value as long as it has supporters and users. The reason is simple: the difference between a cryptocurrency and fiat currency is that no one is forcing you to use cryptocurrency, anyone can mine a cryptocurrency and anyone can issue a cryptocurrency. Therefore the price is primarily dependent on the cost of mining (altcoin exchanges can pump their own offerings for their own benefit but that does not change the above).
Why does the market price depend on the cost of mining? For example, if Core were to suddenly change the algorithm such that it was not supported by any of the existing haspower and could only be mined using a GPU, then hash rate / difficulty will drop sharply and the cost of mining will go down to 1 USD while the market price remains 400 USD. Once this happens, everyone’s just going to take whatever GPUs they can get their hands on and dump what they mine onto the market. After all, who would pass up the opportunity to magically turn 1 USD worth of effort into 400 USD? The result is ultimately that on the one hand the difficulty and cost of mining would rapidly go up while on the other hand the market price would fall sharply until the two converge and the price of Corecoin reaches around 10 USD.
All the while this is happening, the hashrate of Classic would not change and the cost basis would remain 400 USD. It goes without saying that the market will get behind the coin with the higher price since a high cost indicates high hashing power and a more secure network. Therefore, the vast majority of investors will invest in Classic while Core turns into another altcoin.
[Response 19]
Posted by sumubaobei
This whole thing just leaves me speechless.
submitted by KoKansei to btc [link] [comments]

QuarkChain Testnet 2.0 Mining.

QuarkChain Testnet 1.0 was built based on standardized blockchain system requirements, which included network, wallet, browser, and virtual machine functionalities. Other than the fact that the token was a test currency, the environment was completely compatible with the main network. By enhancing the communication efficiency and security of the network, Testnet 2.0 further improves the openness of the network. In addition, Testnet 2.0 will allow community members (other than citizens or residents of the United States) to contribute directly to the network, i.e. running a full node and mining, and receive testnet tokens as rewards.
QuarkChain Testnet 2.0 will support multiple mining algorithms, including two typical algorithms: Ethash and Double SHA256, as well as QuarkChain’s unique algorithm called Qkchash – a customized ASIC-resistant, CPU mining algorithm, exclusively developed by QuarkChain. Mining is available both on the root chain and on shards due to QuarkChain’s two-layered blockchain structure. Miners can flexibly choose to mine on the root chain with higher computing power requirements or on shards based on their own computing power levels. Our Goal By allowing community members to participate in mining on Testnet 2.0, our goal is to enhance QuarkChain’s community consensus, encourage community members to participate in testing and building the QuarkChain network, and gain first-hand experience of QuarkChain’s high flexibility and usability. During this time, we hope that the community can develop a better understanding about our mining algorithms, sharding technologies, and governance structures, etc. Furthermore, this will be a more thorough challenge to QuarkChain’s design before the launch of mainnet! Thus, we sincerely invite you to join the Testnet 2.0 mining event and build QuarkChain’s infrastructure together!
Today, we’re pleased to announce that we are officially providing the CPU mining demo to the public (other than citizens and residents of the United States)! Everyone can participate in our mining event, and earn tQKC, which can be exchanged to real rewards by non-U.S. persons after the launch of our mainnet. Also, we expect to upgrade our testnet over time, and expect to allow GPU mining for Ethash, and ASIC mining for Double SHA256 in the future. In addition, in the near future, a mining pool that is compatible with all mining algorithms of QuarkChain is also expected to be supported.
We hope all the community members can join in with us, and work together to complete this milestone! 2 Introduction to Mining Algorithms 2.1 What is mining? Mining is the process of generating the new blocks, in which the records of current transactions are added to the record of past transactions. Miners use software that contribute their mining power to participate in the maintenance of a blockchain. In return, they obtain a certain amount of QKC per block, which is called coinbase reward. Like many other blockchain technologies, QuarkChain adopts the most widely used Proof of Work (PoW) consensus algorithm to secure the network.
A cryptographically-secure PoW is a costly and time-consuming process which is difficult to solve due to computation-intensity or memory intensity but easy for others to verify. For a block to be valid it must satisfy certain requirements and hash to a value less than the current target threshold. Reverting a block requires recreating all successor blocks and redoing the work they contain, which is costly.
By running a cluster, everyone can become a miner and participate in the mining process. The mining rewards are proportional to the number of blocks mined by each individual.
2.2 Introduction to QuarkChain Algorithms and Mining setup According to QuarkChain’s two-layered blockchain structure and Boson consensus, different shards can apply different consensus and mining algorithms. As part of the Boson consensus, each shard can adjust the difficulty dynamically to increase or decrease the hash power of each shard chain.
In order to fully test QuarkChain testnet 2.0, we adopt three different types of mining algorithms” Ethash, Double SHA256, and Qkchash, which is ASIC resistant and exclusively developed by QuarkChain founder Qi Zhou. These first two hash algorithms correspond to the mining algorithms dominantly conducted on the graphics processing unit (GPU) and application-specific integrated circuits (ASIC), respectively.
I. Ethash Ethash is the PoW mining algorithm for Ethereum. It is the latest version of earlier Dagger-Hashimoto. Ethash is memory intensive, which makes it require large amounts of memory space in the process of mining. The efficiency of mining is basically independent of the CPU, but directly related to memory size and bandwidth. Therefore, by design, building Ethash ASIC is relatively difficult. Currently, the Ethash mining is dominantly conducted on the GPU machines. Read more about Ethash: https://github.com/ethereum/wiki/wiki/Ethash
II. Double SHA256 Double SHA256 is the PoW mining algorithms for Bitcoin. It is computational intensive hash algorithm, which uses two SHA256 iterations for the block header. If the hash result is less than the specific target, the mining is successful. ASIC machine has been developed by Bitmain to find more hashes with less electrical power usage. Read more about Double SHA256: https://en.bitcoin.it/wiki/Block_hashing_algorithm
III. Qkchash Originally, Bitcoin mining was conducted on the CPU of individual computers, with more cores and greater speed resulting in more profitability. After that, the mining process became dominated by GPU machines, then field-programmable gate arrays (FPGA) and finally ASIC, in a race to achieve more hash rates with less electrical power usage. Due to this arms race, it has become increasingly harder for prospective new miners to join. This raises centralization concerns because the manufacturers of the high-performance ASIC are concentrated in a small few.
To solve this, after extensive research and development, QuarkChain founder Dr. Qi Zhou has developed mining algorithm — Qkchash, that is expected to be ASIC-resistant. The idea is motivated by the famous date structure orders-statistic tree. Based on this data structure, Qkchash requires to perform multiple search, insert, and delete operations in the tree, which tries to break the ASIC pipeline and makes the code execution path to be data-dependent and unpredictable besides random memory-access patterns. Thus, the mining efficiency is closely related to the CPU, which ensures the security of Boston consensus and encourges the mining decentralization.
Please refer to Dr. Qi’s paper for more details: https://medium.com/quarkchain-official/order-statistics-based-hash-algorithm-e40f108563c4
2.3 Testnet 2.0 mining configuration Numbers of Shards: 8 Cluster: According to the real-time online mining node The corresponding mining algorithm is Read more about Ethash with Guardian: https://github.com/QuarkChain/pyquarkchain/wiki/Ethash-with-Guardian)
We will provide cluster software and the demo implementation of CPU mining to the public. Miners are able to arbitrarily select one shard or multiple shards to mine according to the mining difficulty and rewards of different shards. GPU / ASIC mining is allowed if the public manages to get it working with the current testnet. With the upgrade of our testnet, we will further provide the corresponding GPU / ASIC software.
QuarkChain’s two-layered blockchain structure, new P2P mode, and Boson consensus algorithm are expected tobe fully tested and verified in the QuarkChain testnet 2.0. 3 Mining Guidance In order to encourage all community members to participate in QuarkChain Testnet 2.0 mining event, we have prepared three mining guidances for community members of different backgrounds.
Today we are releasing the Docker Mining Tutorial first. This tutorial provides a command line configuration guide for developers and a docker image for multiple platforms, including a concise introduction of nodes and mining settings. Follow the instructions here: Quick Start with QuarkChain Mining.
Next we will continue to release: A tutorial for community members who don’t have programming background. In this tutorial, we will teach how to create private QuarkChain nodes using AWS, and how to mine QKC step by step. This tutorial is expected to be released in the next few days. Programs and APIs integrated with GPU / ASIC mining. This is expected to allow existing miners to switch to QKC mining more seamlessly. Frequently Asked Questions: 1. Can I use my laptop or personal computer to mine? Yes, we will provide cluster software and the demo implementation of CPU mining to the public. Miners will be able to arbitrarily select one shard or multiple shards to mine according to the work difficulty and rewards of different shards. 2. What is the minimum requirements for my laptop or personal computer to mine? Please prepare a Linux or MacOs machine with public IP address or port forwarding set up. 3. Can I mine with my GPU or an ASIC machine? For now, we will only be providing the demo implementation of CPU mining as our first step. Interested miners/developers can rewrite the corresponding GPU / ASIC mining program, according to the JSON RPC API we provided. With the upgrade of our testnet, we expect to provide the corresponding GPU / ASIC interface at a later date. 4. What is the difference among the different mining algorithms? Which one should I choose? Double SHA256 is a computational intensive algorithm, but Ethash and Qkchash are memory intensive algorithms, which have certain requirements on the computer’s memory. Since currently we only support CPU mining, the mining efficiency entirely depends on the cores and speed of CPU. 5. For testnet mining, what else should I know? First, the mining process will occupy a computer’s memory. Thus, it is recommended to use an idle computer for mining. In Testnet 2.0 settings, the target block time of root chain is 60 seconds, and the target block time of shard chain is 10 seconds. The mining is a completely random process, which will take some time and consume a certain amount of electricity. 6. What are the risks of testnet mining? Currently our testnet is still under the development stage and may not be 100% stable. Thus, there would be some risks for QuarkChain main chain forks in testnet, software upgrades and system reboots. These may cause your tQKC or block record to be lost despite our best efforts to ensure the stability and security of the testnet.
For more technical questions, welcome to join our developer community on Discard: https://discord.me/quarkchain. 4 Reward Mechanism Testnet 2.0 and all rewards described herein, including mining, are not being offered and will not be available to any citizens or residents of the United States and certain other jurisdictions. All rewards will only be payable following the mainnet launch of QuarkChain. In order to claim or receive any of the following rewards after mainnet launch, you will be required to provide certain identifying documentation and information about yourself. Failure to provide such information or demonstrate compliance with the restrictions herein may result in forfeiture of all rewards, prohibition from participating in future QuarkChain programs, and other sanctions.
NO U.S. PERSONS MAY PARTICIPATE IN TESTNET 2.0 AND QUARKCHAIN WILL STRICTLY ENFORCE THIS VIA OUR KYC PROCEDURES. IF YOU ARE A CITIZEN OR RESIDENT OF THE UNITED STATES, DO NOT PARTICIPATE IN TESTNET 2.0. YOU WILL NOT RECEIVE ANY REWARDS FOR YOUR PARTICIPATION.
4.1 Mining Rewards
  1. Prize Pool A total of 5 million QKC prize pool have been reserved to motivate all miners to participate in the testnet 2.0 mining event. According to the different mining algorithms, the prize pool is allocated as follows:
Total Prize Pool: 5,000,000 QKC Prize Pool for Ethash Algorithm: 2,000,000 QKC Prize Pool for Double SHA256 Algorithm: 1,000,000 QKC Prize Pool for Qkchash Algorithm: 2,000,000 QKC
The number of QKC each miner is eligible to receive upon mainnet launch will be calculated on a pro rata basis for each mining algorithm set forth above, based on the ratio of sharded block mined by each miner to the total number of sharded block mined by all miners employing such mining algorithm in Testnet 2.0.
  1. Early-bird Rewards To encourage more people to participate early, we will provide early bird rewards. Miners who participate in the first month (December 2018, PST) will enjoy double points. This additional point reward will be ended on December 31, 2018, 11:59pm (PST).
4.2 Bonus for Bug Submission: If you find any bugs for QuarkChain testnet, please feel free to create an issue on our Github page: https://github.com/QuarkChain/pyquarkchain/issues, or send us an email to [email protected]. We may provide related rewards based on the importance and difficulty of the bugs.
4.3 Reward Rules: QuarkChain reserves the right to review the qualifications of the participants in this event. If any cheating behaviors were to be found, the participant will be immediately disqualified from any rewards. QuarkChain further reserves the right to update the rules of the event, to stop the event/network, or to restart the event/network in its sole discretion, including the right to interpret any rules, terms or conditions. For the latest information, please visit our official website or follow us on Telegram/Twitter. About QuarkChain QuarkChain is a flexible, scalable, and user-oriented blockchain infrastructure by applying blockchain sharding technology. It is one of the first public chains that successfully implemented state sharding technology for blockchain in the world. QuarkChain aims to deliver 100,000+ on-chain TPS. Currently, 14,000+ peak TPS has already been achieved by an early stage testnet. QuarkChain already has over 50 partners in its ecosystem. With flexibility, scalability, and usability, QuarkChain is enabling EVERYONE to enjoy blockchain technology at ANYTIME and ANYWHERE.
Testnet 2.0 and all rewards described herein are not being and will not be offered in the United States or to any U.S. persons (as defined in Regulation S promulgated under the U.S. Securities Act of 1933, as amended) or any citizens or residents of countries subject to sanctions including the Balkans, Belarus, Burma, Cote D’Ivoire, Cuba, Democratic Republic of Congo, Iran, Iraq, Liberia, North Korea, Sudan, Syria, Zimbabwe, Central African Republic, Crimea, Lebanon, Libya, Somalia, South Suda, Venezuela and Yemen. QuarkChain reserves the right to terminate, suspend or prohibit participation of any user in Testnet 2.0 at any time.
In order to claim or receive any rewards, including mining rewards, you will be required to provide certain identifying documentation and information. Failure to provide such information or demonstrate compliance with the restrictions herein may result in termination of your participation, forfeiture of all rewards, prohibition from participating in future QuarkChain programs, and other actions.
This announcement is provided for informational purposes only and does not guarantee anyone a right to participate in or receive any rewards in connection with Testnet 2.0.
Note: The use of Testnet 2.0 is subject to our terms and conditions available at: https://quarkchain.io/testnet-2-0-terms-and-conditions/
more about qurakchain: Website: https://quarkchain.io/cn/ Facebook: https://www.facebook.com/quarkchainofficial/ Twitter: https://twitter.com/Quark_Chain Telegram: https://t.me/quarkchainio
submitted by Rahadsr to u/Rahadsr [link] [comments]

My draft for a new /r/btc FAQ explaining the split from /r/Bitcoin to new users

If /btc is going to actually compete with /Bitcoin, it needs to be just as friendly and informative to new users, especially given its position as the “non default” or “breakaway” sub. The current /btc sticky saying "Welcome to the Wiki" doesn't even have any content in it and I feel this is a bit of a wasted opportunity to create an informative resource that new users will see by default and everyone else can link to instead of retyping things over and over about the history and difference between the subs.
Here's what I've written as a starting point. I've done my best to keep it as concise and relevant as possible but in all honesty it is a complicated issue and a short but effective explanation is basically impossible. I hope the community can expand/improve on it further.
Quick bit about me
I got into Bitcoin in October 2013, when /Bitcoin had around 40k subscribers if I remember correctly, so by now I've actually personally experienced a large portion of Bitcoin's history - including the events preceding and since the creation of this sub. I have been an active and popular poster on /Bitcoin for almost all of that time, until the split and my subsequent banning. With the recent censorship fiasco, I'm finding I have to reiterate the same points over and over again to explain to newer users what happened with the /Bitcoin vs /btc split, questions about hard forks, what is likely to happen in the future and so on. So I put a couple of hours into writing this post to save myself the trouble in future.

/btc FAQ - Historical split from /Bitcoin megathread - v0.1

There is a TL:DR; at the bottom, but it is exactly that. If you skip straight to the TL:DR; then don’t expect sympathy when you post questions that have already been covered in the lengthy and detailed main post.

New to Bitcoin?

I am totally new to Bitcoin. What is it? How does it work? Can/should I mine any? Where can I buy some? How do I get more information?
All of these questions are actually really well covered in the /Bitcoin FAQ. Check it out in a new tab here. Once you've got a bit of a handle on the technology as a whole, come back here for the rest of the story.

History: /btc vs /Bitcoin

What's the difference between /btc and /Bitcoin? What happened to create two such strongly opposed communities? Why can't I discuss /btc in /Bitcoin?
Historically, the /Bitcoin subreddit was the largest and most active forum for discussing Bitcoin. As Bitcoin grew close to a cap in the number of transactions it could process, known as the 1MB block size limit, the community had differing opinions on the best way to proceed. Note that this upcoming issue was anticipated well ahead of time, with Satoshi's chosen successor to lead the project Gavin Andresen posting about it in mid 2015. Originally, there was quite a broad spread of opinions - some people favoured raising the blocksize to various extents, some people favoured implementing a variety of second layer solutions to Bitcoin, probably most people thought both could be a good idea in one form or another.
This topic was unbelievably popular at the time, taking up almost every spot on the front page of /Bitcoin for weeks on end.
Unfortunately, the head moderator of /Bitcoin - theymos - felt strongly enough about the issue to use his influence to manipulate the debate. His support was for the proposal of existing software (called Bitcoin Core) NOT to raise the blocksize limit past 1MB and instead rely totally on second layer solutions - especially one called Segregated Witness (or SegWit). With some incredibly convoluted logic, he decided that any different implementations of Bitcoin that could potentially raise the limit were effectively equivalent to separate cryptocurrencies like Litecoin or Ethereum and thus the block size limit or implement other scaling solutions were off-topic and ban-worthy. At the time the most popular alternative was called Bitcoin XT and was supported by experienced developers Gavin Andresen and Mike Hearn, who have since both left Bitcoin Core development in frustration at their marginalisation. Theymos claimed that for Bitcoin XT or any other software implementation to be relevant to /Bitcoin required "consensus", which was never well defined, despite it being seemingly impossible for everyone to agree on the merits of a new project if no one was allowed to discuss it in the first place. Anyone who didn't toe the line of his vaguely defined moderation policy was temporarily or permanently banned. There was also manipulation of the community using the following tactics - which can still be seen today:
This created enormous uproar among users, as even many of those in favour of Bitcoin Core thought it was authoritarian to actively suppress this crucial debate. theymos would receive hundreds of downvotes whenever he posted: for example here where he gets -749 for threatening to ban prominent Bitcoin business Coinbase from the subreddit.
In an extraordinary turn of events, Theymos posted a thread which received only 26% upvotes in a sample size of thousands announcing that he did not care if even 90% of users disagreed with his policy, he would not change his opinion or his moderation policy to facilitate the discussion the community wanted to have. His suggested alternative was instead for those users, however many there were, to leave.
Here are Theymos' exact words, as he describes how he intends to continue moderating Bitcoin according to his own personal rules rather than the demands of the vast majority of users, who according to him clearly don't have any "real arguments" or "any brains".
Do not violate our rules just because you disagree with them. This will get you banned from /Bitcoin , and evading this ban will get you (and maybe your IP) banned from Reddit entirely.
If 90% of /Bitcoin users find these policies to be intolerable, then I want these 90% of /Bitcoin users to leave. Both /Bitcoin and these people will be happier for it. I do not want these people to make threads breaking the rules, demanding change, asking for upvotes, making personal attacks against moderators, etc. Without some real argument, you're not going to convince anyone with any brains -- you're just wasting your time and ours. The temporary rules against blocksize and moderation discussion are in part designed to encourage people who should leave /Bitcoin to actually do so so that /Bitcoin can get back to the business of discussing Bitcoin news in peace.
/btc was therefore born in an environment not of voluntary departure but of forced exile.
This forced migration caused two very unfortunate occurrences:
  1. It polarised the debate around Bitcoin scaling. Previously, there was a lot of civil discussion about compromise and people with suggestions from all along the spectrum were working to find the best solution. That was no longer possible when a moderation policy would actively suppress anyone with opinions too different from Theymos. Instead it forced everyone into a "with us or against us" situation, which is why the /btc subreddit has been pushed so far in favour of the idea of a network hard fork (discussed below).
  2. It has distracted Bitcoin from its mission of becoming a useful, global, neutral currency into a war of information. New users often find /Bitcoin and assume it to be the authoritative source of information, only to later discover that a lot of important information or debate has been invisibly removed from their view.
Since then, like any entrenched conflict, things have degenerated somewhat on both sides to name calling and strawman arguments. However, /btc remains committed to permitting free and open debate on all topics and allowing user downvotes to manage any "trolling" (as /Bitcoin used to) instead of automatic shadow-banning or heavy-handed moderator comment deletion (as /Bitcoin does now). Many users in /Bitcoin deny that censorship exists at all (it is difficult to see when anyone pointing out the censorship has their comment automatically hidden by the automoderator) or justify it as necessary removal of "trolls", which at this point now includes thousands upon thousands of current and often long-standing Bitcoin users and community members.
Ongoing censorship is still rampant, partially documented in this post by John Blocke
For another detailed account of this historical sequence of events, see singularity87 s posts here and here.
/btc has a public moderator log as demonstration of its commitment to transparency and the limited use of moderation. /Bitcoin does not.
Why is so much of the discussion in /btc about the censorship in /Bitcoin? Isn't a better solution to create a better community rather than constantly complaining?
There are two answers to this question.
  1. Over time, as /btc grows, conversation will gradually start to incorporate more information about the Bitcoin ecosystem, technology, price etc. Users are encouraged to aid this process by submitting links to relevant articles and up/downvoting on the /new and /rising tab as appropriate. However, /btc was founded effectively as a refuge for confused and angry users banned from /Bitcoin and it still needs to serve that function so at least some discussion of the censorship will probably always persist (unless there is a sudden change of moderation policy in /Bitcoin).
  2. The single largest issue in Bitcoin right now is the current cap on the number of transactions the network can process, known as the blocksize limit. Due to the censorship in /Bitcoin, open debate of the merits of different methods of addressing this problem is impossible. As a result, the censorship of /Bitcoin (historically the most active and important Bitcoin community forum) has become by proxy the single most important topic in Bitcoin, since only by returning to open discussion would there be any hope of reaching agreement on the solution to the block size limit itself. As a topic of such central importance, there is naturally going to be a lot of threads about this until a solution is found. This is simply how Bitcoin works, that at any one time there is one key issue under discussion for lengthy periods of time (previous examples of community "hot topics" include the demise of the original Bitcoin exchange Mt Gox, the rise to a 51% majority hash rate of mining pool GHash.io and the supposed "unveiling" of Bitcoin's anonymous creator Satoshi Nakamoto).

Bitcoin Network Hard Forks

What is a hard fork? What happens if Bitcoin hard forks?
A network hard fork is when a new block of transactions is published under a new set of rules that only some of the network will accept. In this case, Bitcoin diverges from a single blockchain history of transactions to two separate blockchains of the current state of the network. With any luck, the economic incentive for all users to converge quickly brings everyone together on one side of the fork, but this is not guaranteed especially since there is not a lot of historical precedent for such an event.
A hard fork is necessary to raise the block size limit above its 1MB cap.
Why is /btc generally in favour of a hard fork and /Bitcoin generally against?
According to a lot of users on /Bitcoin - a hard fork can be characterised as an “attack” on the network. The confusion and bad press surrounding a hard fork would likely damage Bitcoin’s price and/or reputation (especially in the short term). They point to the ongoing turmoil with Ethereum as an example of the dangers of a hard fork. Most of /Bitcoin sees the stance of /btc as actively reckless, that pushing for a hard fork creates the following problems:
According to a lot of users on /btc - a hard fork is necessary despite these risks. Most of /btc sees the stance of /Bitcoin as passively reckless, that continuing to limit Bitcoin’s blocksize while remaining inactive creates the following problems:
Bitcoiners are encouraged to examine all of the information and reach their own conclusion. However, it is important to remember that Bitcoin is an open-source project founded on the ideal of free market competition (between any/all software projects, currencies, monetary policies, miners, ideas etc.). In one sense, /btc vs /Bitcoin is just another extension of this, although Bitcoiners are also encouraged to keep abreast of the top posts and links on both subreddits. Only those afraid of the truth need to cut off opposing information.
What do Bitcoin developers, businesses, users, miners, nodes etc. think?
Developers
There are developers on both sides of the debate, although it is a common argument in /Bitcoin to claim that the majority supports Bitcoin Core. This is true in the sense that Bitcoin Core is the current default and has 421 listed code contributors but misleading because not only are many of those contributors authors of a single tiny change and nothing else but also many major figures like Gavin Andresen, Mike Hearn and Jeff Garzik have left the project while still being counted as historical contributors.
Businesses including exchanges etc.
A definite vote of confidence is not available from the vast majority of Bitcoin businesses, and wouldn't be binding in any case. The smart decision for most businesses is to support both chains in the event of a fork until the network resolves the issue (which may only be a day or two).
Users
Exact user sentiment is impossible to determine, especially given the censorship on /Bitcoin.
Miners and Nodes
Coin.dance hosts some excellent graphical representations of the current opinion on the network.
Node Support Information
Miner Support Information
What do I do if the network hard forks?* Do we end up with two Bitcoins?
Firstly, in the event of a hard fork there is no need to panic. All Bitcoins are copied to both chains in the case of a split, so any Bitcoins you have are safe. HOWEVER, in the event of a fork there will be some period of confusion where it is important to be very careful about how/why you spend your Bitcoins. Hopefully (and most likely) this would not last long - everyone in Bitcoin is motivated to converge into agreement for everyone's benefit as soon as possible - but it's impossible to say for sure.
There isn't a lot of historical data about cryptocurrency hard forks, but one example is alternative cryptocurrency Ethereum that forked into two coins after the events of the DAO and currently exists as two separate chains, ETH (Ethereum) and ETC (Ethereum Classic).
The Ethereum fork is not a good analogy for Bitcoin because its network difficulty target adjusts every single block, so a massive drop in hash rate does not significantly impede its functioning. Bitcoin’s difficult target adjusts only every 2100 blocks - which under usual circumstances takes two weeks but in the event of a hard fork could be a month or more for the smaller chain. It is almost inconceivable that a minority of miners would willingly spend millions of dollars over a month or more purely on principle to maintain a chain that was less secure and processed transactions far slower than the majority chain - even assuming the Bitcoins on this handicapped chain didn't suffer a market crash to close to worthless.
Secondly, a hard fork is less likely to be a traumatic event than it is often portrayed in /Bitcoin:

What Happens Now

How do I check on the current status of opinion?
Coin.dance hosts some excellent graphical representations of the current opinion on the network.
Node Support Information
Miner Support Information
Users are also welcome to engage in anecdotal speculation about community opinion based on their impression of the commentary and activity in /btc and /Bitcoin.
Haven't past attempts to raise the blocksize failed?
There is no time limit or statute of limitations on the number of attempts the community can make to increase the block size and scale Bitcoin. Almost any innovation in the history of mankind required several attempts to get working and this is no different.
The initial attempt called Bitcoin XT never got enough support for a fork because key developer Mike Hearn left out of frustration at trying to talk around all the censorship and community blockading.
The second major attempt called Bitcoin Classic gained massive community momentum until it was suddenly halted by the drastic implementation of censorship by Theymos described above.
The most popular attempt at the moment is called Bitcoin Unlimited.
/btc is neutral and welcoming to any and all projects that want to find a solution to scaling Bitcoin - either on-or off-chain. However, many users are suspicious of Bitcoin Core's approach that involves only SegWit, developed by a private corporation called Blockstream and that has already broken its previous promises in a document known as the Hong Kong Agreement to give the network a block size limit raise client along with Segregated Witness (only the latter was delivered) .
What if the stalemate is irreconcilable and nothing ever happens?
Increasing transaction fees and confirmation times are constantly increasing the pressure to find a scaling solution - leading some to believe that further adoption of Bitcoin Unlimited or a successor scaling client will eventually occur. Bitcoin Core's proposed addition of SegWit is struggling to gain significant support and as it is already the default client (and not censored in /Bitcoin) it is unlikely to suddenly grow any further.
If the stalemate is truly irreconcilable, eventually users frustrated by the cost, time and difficulty of Bitcoin will begin migrating to alternative cryptocurrencies. This is obviously not a desirable outcome for long standing Bitcoin supporters and holders, but cannot be ignored as the inevitable free market resort if Bitcoin remains deadlocked for long enough.

TL:DR;

I don’t know anything about Bitcoin. Help me?
What’s the /btc vs /Bitcoin story?
  • Bitcoin is at its transaction capacity and needs to scale to onboard more users
  • The community was discussing different ways to do this until the biased head moderator of /Bitcoin Theymos got involved
  • Theymos, started an authoritarian censorship rampage which culminated in telling 90% of /Bitcoin users to leave. /btc is where they went. Here is the thread where it all started. Note the 26% upvoted on the original post, the hundreds of upvotes of community outcry in the comments and the graveyard of [removed] posts further down the chain. Highly recommended reading in its entirety.
  • To this day, /Bitcoin bans all discussion of alternative scaling proposals and /btc
  • Bitcoin is about freedom, and can’t function effectively with either an artificially restricted transaction cap or a main community forum that is so heavily manipulated. This subreddit is the search for solutions to both problems as well as general Bitcoin discussion.
What’s the deal with hard forks?
  • No TL:DR; possible, read the whole post.
What happens now?
  • Node Support Information
  • Miner Support Information
  • Debate continues in /btc, and generally doesn't continue in /Bitcoin - although posts referencing /btc or Bitcoin Unlimited regularly sneak past the moderators because it is such a crucial topic
  • Eventually one side or the other breaks, enough miners/nodes/users get on one side and Bitcoin starts scaling. This may or may not involve a hard fork.
  • If not, fees and average confirmation times continue to rise until users migrate en masse to an altcoin. This is not an imminent danger, as can be seen by the BTC marketcap dominance at its historical levels of 80+% but could change at any time
submitted by Shibinator to btc [link] [comments]

Groestlcoin Release September 2018

Introduction

As always, the past 3 months since 22nd June have been crazy busy. The bears might still be around, but the show must go on and of course has not slowed the Groestlcoin development team in the slightest. Here’s a quick overview of what has already happened since the last release: - Integrated into the bitbns exchange, with the ability to buy Groestlcoin directly with the Indian Rupee. - Groestlcoin Rebrand Vote – Whilst there was much talk and push for a rebrand vote, the overall result was almost unanimously in favour of keeping our unique and conversation-starting name. With just 83 votes to Rebrand, and 2577 votes to No Rebrand. Thank you for all who voted, the funds raised are being used to fund ongoing hosting and development costs. - Integrated into the Cryptobridge exchange. Cryptobridge is a popular decentralised exchange where you always hold the private keys to your funds, only YOU have access to them. - Groestlcoin has been added to SimpleSwap – Groestlcoin can now be swapped with over 100 other cryptocurrencies, without signing up! - Groestlcoin has been added to UnoDax, one of the leading cryptocurrency exchanges in India, with TUSD, BTC and INR trading pairs. - Groestlcoin has been added to SwapLab.cc, where you can buy Groestlcoin using Bitcoin and over 50 other altcoins. Purchasing with VISA/Mastercard is coming VERY SOON. Discussed later: - Groestlcoin has been listed on #3 largest exchange in the world on volume, Huobi Global! More on this to come further on in the announcements. - Groestlcoin has been added to the Guarda Multi-Currency Wallet. - Groestlcoin has been added to Melis Multi-Device, Multi-Account, Multi-Platform, Multi-Signature advanced wallet! Already this list is far more than most other cryptocurrencies have achieved in the past 3 months. But this is just the tip of the iceberg of what has been developed.

What's been Happening?

GRSPay Released

We are so excited for this, that it has it's own separate reddit thread. Head over there now at https://www.reddit.com/groestlcoin/comments/9ikr5m/groestlcoin_releases_grspay/? to see more on this!
https://www.melis.io/assets/logo-navbar-4b6f0d372f15b2446d3fa4c68f346e4fb08ee113941186cee58fd6135f3f8b7d.svg

Melis Wallet

The the most advanced wallet for Bitcoin, Bitcoin Cash, Litecoin and now Groestlcoin.
With Melis you have the complete control of your bitcoins and private keys, you can define spending limits policies and make use of two or more factors authentication. Melis is open source, published on GitHub.

How Melis Works?

You can create as many accounts as you want. An account is a part of your wallet that can be customised to your requirements. You can choose how many co-signers are required to spend funds. The accounts are completely independent and act like separate wallets from each other but can be accessed via the same details. A core feature of Melis is the ability to set a ‘primary’ device. With this you can set an account as ‘Secure’ so it is only viewable (and accessible at all) from the Primary device. You can have a savings account hidden from the outside world whilst also having your ‘spending’ funds available on the go. With Melis you can create a multi-signature account between N people, where up to N signatures are required to sign a transaction, choosing if any of those should be mandatory.
Core Features:
https://guarda.co/assets/images/1PGo4ID.svg?1537791124643

Guarda Wallet

Safer than ever! Desktop Light Wallet - Anonymous and fast!
With Guarda Multi-currency Desktop Light Wallet you don’t need to register. Guarda has no access to your private keys or funds. You can receive, send, store, buy and exchange cryptocurrencies in complete anonymity and safety. All these features are available on Linux, Windows or MacOS. Choose the one that suits you!
More info about Guarda wallet on www.guarda.co
https://holytransaction.com/images/logo.png

Integrated into HolyTransaction

What is HolyTransaction?

HolyTransaction gives users access to the crypto world with a universal cryptocurrency wallet and instant exchange.

Features

For more information, visit Holy Transaction here.
https://www.groestlcoin.org/wp-content/uploads/2018/09/next-grs-groestlcoin.jpg

Integrated into NEXT Wallet

What is NEXT?

NEXT is a modern, next-generation stylish open-source Desktop wallet.

Features

For more information, visit NextWallet here.
https://blockchainfinancial.com/mediaserve2018/09/admin-06143647-bcf_logo_vec_256x256.png

Integrated into Blockchain Financial

What is Blockchain Financial?

Blockchain Financial is a set of web based services for individuals and companies that want to make things happen with the Cryptocurrencies Ecosystem. - For those that don't know anything about cryptocurrencies, we offer tools that will let them receive, send and operate with an assortment of coins. - For those that are already riding the wave, we offer tools that will let them do all those things that they weren't able to do.

Blockchain Financials mission

We're not here to reinvent the wheel. We're here to make it run smoother for you, and we provide some of the most useful services you'll find on the internet, made in a way that is easy to understand and use on a daily basis. In short, we're a bunch of people that claim to be Crypto Evangelists. We strongly believe in cryptocurrencies, and our main promise is to push them up so more people get involved and take all the advantages they offer.

More information from Blockchain Financial

Back in 2014, the world was taken by storm when Facebook approved the first cryptocurrencies tipping apps. The first was for Dogecoin, and the second was for multiple coins.
The project was hosted on whitepuma.net, and persisted for almost two years, built up a massive user community and gave a home to Bitcoin, Litecoin, Dogecoin and dozens of other bitcoin-based altcoins.
After very active months, the tipping hype started to fade away. Then, the developers decided to jump into the next stage: bringing not only tipping, but also mining and a widget that could be embedded on websites to allow everyone to accept payments. Sadly, the work was never completed because the project started to require an unsustainable amount of resources. Then, in a painful decision, a shutdown was announced by December 2015.
A couple of months after whitepuma.net was closed, the source code was released by its creator as Open Source on GitHub. But it wasn't maintained.
Now, some of the original members of the dev and admin teams gathered up with a handful of the WhitePuma's elite users, and decided to make something good with the best pieces of the old source code. That, with fresh new ideas and the power of the BardCanvas engine, synthesized the core of Blockchain Financial.
More info about Blockchain Financial wallet on .
For more information, visit [Blockchain Financial](www.blockchainfinancial.com)
https://www.huobi.com/image/logo.aeb4723.svg

Groestlcoin Listed on Huobi

Who are Huobi?

Huobi was founded in China and is now based in Singapore, with offices in Hong Kong, South Korea, Japan and the North America, currently sitting #3 in volume on Coinmarketcap. Huobi is a great leap forward for our growing presence in Asia and we are very excited to be listed here!
You can find the official Huobi announcement here.

Groestlcoin Core v2.16.3 - Please Update ASAP

A new major Groestlcoin Core version 2.16.3 is now available for download which includes both a Denial of Service component and a critical inflation vulnerability, so it is recommended to upgrade to it if you are running a full Groestlcoin node or a local Groestlcoin Core wallet.
v2.16.3 is now the official release version of Groestlcoin Core. This is a new major version release with a very important security updates. It is recommended to upgrade to this version as soon as possible. Please stop running versions of Groestlcoin Core affected by CVE-2018-17144 ASAP: These are 2.13.3 and 2.16.0.
As a result in this, all exchanges and services have been asked to upgrade to this version, so please be patient if wallets go in to maintenance mode on these services.

What's new in version v2.16.3?

This is a major release of Groestlcoin Core fixing a Denial of Service component and a critical inflation vulnerability (https://nvd.nist.gov/vuln/detail/CVE-2018-17144) exploitable by miners that has been discovered in Groestlcoin Core version 2.13.3 and 2.16.0. It is recommended to upgrade to 2.16.3 as soon as possible. If you only occasionally run Groestlcoin Core, then it's not necessary to run out and upgrade it right this second. However, you should upgrade it before you next run it. If you know anyone who is running an older version, tell them to upgrade it ASAP. Stored funds are not at risk, and never were at risk. At this time we believe over half of the Groestlcoin hashrate has upgraded to patched nodes. We are unaware of any attempts to exploit this vulnerability. However, it still remains critical that affected users upgrade and apply the latest patches to ensure no possibility of large reorganizations, mining of invalid blocks, or acceptance of invalid transactions occurs.

The Technicals

In Groestlcoin Core 2.13.3, an optimization was added (Bitcoin Core PR #9049) which avoided a costly check during initial pre-relay block validation that multiple inputs within a single transaction did not spend the same input twice which was added in 2012 (Bitcoin Core PR #443). While the UTXO-updating logic has sufficient knowledge to check that such a condition is not violated in 2.13.3 it only did so in a sanity check assertion and not with full error handling (it did, however, fully handle this case twice in prior to 2.1.0.6). Thus, in Groestlcoin Core 2.13.3, any attempts to double-spend a transaction output within a single transaction inside of a block will result in an assertion failure and a crash, as was originally reported. In Groestlcoin Core 2.16.0, as a part of a larger redesign to simplify unspent transaction output tracking and correct a resource exhaustion attack the assertion was changed subtly. Instead of asserting that the output being marked spent was previously unspent, it only asserts that it exists. Thus, in Groestlcoin Core 2.16.0, any attempts to double-spend a transaction output within a single transaction inside of a block where the output being spent was created in the same block, the same assertion failure will occur. However, if the output being double-spent was created in a previous block, an entry will still remain in the CCoin map with the DIRTY flag set and having been marked as spent, resulting in no such assertion. This could allow a miner to inflate the supply of Groestlcoin as they would be then able to claim the value being spent twice.
Groestlcoin would like to publicly thank Reddit user u/Awemany for finding CVE-2018-17144 and reporting it (https://lists.linuxfoundation.org/pipermail/bitcoin-core-dev/2018-Septembe000064.html). You deserve gratitude and appreciation from cryptoworld, and you have ours. If you want to support him for his work, please consider donating to him on his bitcoin cash address: bitcoincash:qr5yuq3q40u7mxwqz6xvamkfj8tg45wyus7fhqzug5
http://i.imgur.com/3YhyNZK.png

Groestlcoin Electrum-GRS 3.2.2 - Ledger & Trezor Edition

What is Electrum-GRS?
Electrum-GRS is a lightweight "thin client" groestlcoin wallet Windows, MacOS and Linux based on a client-server protocol. Its main advantages over the original Groestlcoin client include support for multi-signature wallets and not requiring the download of the entire block chain.

Changes:

http://i.imgur.com/3YhyNZK.png

Electrum-GRS Mobile Android

What is Electrum-GRS Mobile?

Electrum-grs is a lightweight "thin client" groestlcoin wallet Android based on a client-server protocol. Its main advantages over the original Groestlcoin client include support for multi-signature wallets and not requiring the download of the entire block chain.

Changes

Groestlcoin EasyVanity Released

Groestlcoin EasyVanity is a Windows app is built from the ground-up in C# and makes it easier than ever before to create your very own bespoke Groestlcoin address(es), even whilst not connected to the internet! You can even generate multiple keys with the same prefix and leave it on overnight whilst your CPU or GPU collects and stores these addresses locally.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then Groestlcoin EasyVanity is the right choice for you to create a more personalized address.

Features

• Ability to continue finding keys after first one is found • Includes warning on startup if connected to the internet • Ability to output keys to a text file (And shows button to open that directory) • Ability to make your match case sensitive (Where possible) • Show and hide the private key with a simple toggle switch, and copy the private key straight to your clipboard • Show full output of commands • Includes statistics whilst the application is running • Ability to choose between Processor (CPU) and Graphics Card (GPU) • Automatically detects 32 or 64 bit systems • Features both a Light and Dark Material Design inspired Themes • EasyVanity's search is probabilistic, and the amount of time required to find a given pattern depends on how complex the pattern is, the speed of your computer, and whether you get lucky. • EasyVanity includes components to perform address searching on your CPU (vanitygen) and your OpenCL-compatible GPU (oclvanitygen). Both can be built from source, and both are included in the Windows binary package. • Prefixes are exact strings that must appear at the beginning of the address. When searching for prefixes, Easyvanity will ensure that the prefix is possible, and will provide a difficulty estimate. • The percentage displayed just shows how probable it is that a match would be found in the session so far. If it finds your address with 5% on the display, you are extremely lucky. If it finds your address with 92% on the display, you are unlucky. If you stop EasyVanity with 90% on the display, restart it, and it finds your address with 2% on the display, your first session was unlucky, but your second session was lucky. • EasyVanity uses the OpenSSL random number generator. This is the same RNG used by groestlcoin and a good number of HTTPS servers. It is regarded as well-scrutinized. Guessing the private key of an address found by EasyVanity will be no easier than guessing a private key created by groestlcoin itself. • To speed up address generation, EasyVanity uses the RNG to choose a private key, and literally increments the private key in a loop searching for a match. As long as the starting point is not disclosed, if a match is found, the private key will not be any easier to guess than if every private key tested were taken from the RNG. EasyVanity will also reload the private key from the RNG after 10,000,000 unsuccessful searches (100M for oclvanitygen), or when a match is found and multiple patterns are being searched for. • Free software - MIT. Anyone can audit the code. • Written in C# - The code is short, and easy to review.

Groestlcoin Sentinel (Android & Blackberry) – Mainnet + Testnet

What is Sentinel?

Groestlcoin Sentinel is the easiest and fastest way to track/receive/watch payments in your offline Groestlcoin Wallets. Groestlcoin Sentinel is compatible with any standard Groestlcoin address, BIP44 XPUB (Extended Public Key) BIP49 YPUB and BIP84 ZPUB
Groestlcoin Sentinel is a great solution for anyone who wants the convenience and utility of a hot wallet for receiving payments directly into their cold storage (or hardware wallets). Sentinel accepts XPUB's, YPUB'S, ZPUB's and individual Groestlcoin address. Once added you will be able to view balances, view transactions, and (in the case of XPUB's, YPUB's and ZPUB's) deterministically generate addresses for that particular wallet.

What's New?

The P2SH paperwallet supports creating P2SH paperwallets in bulk, keypair generation with QR codes and sweeping tool. Groestlcoin believes strongly in privacy, the live version does not collect and store IP or transaction data.
Changes
Features
The BECH32 paperwallet supports creating BECH32 paperwallets in bulk, keypair generation with QR codes and sweeping tool. Groestlcoin believes strongly in privacy, the live version does not collect and store IP or transaction data.
Features
![WebWallet](https://i.imgur.com/Z2oj7bj.png)

Groestlcoin Web Wallet Update 1.4

What is Groestlcoin Web Wallet?
Groestlcoin Webwallet is an open source, multisignature, HD Wallet and more! Webwallet is a a open source browser based Groestlcoin webwallet.
Webwallet is a playground for Groestlcoin in javascript to experiment with. It supports multisig, OP_HODL, RBF and many more. Groestlcoin believes strongly in privacy, the live version does not collect and store IP or transaction data.
Changes:
submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

Radeon VII Ethereum Mining Performance - Specs Hashrate Profits & More BITCOIN DIFFICULTY ADJUSTMENT  Satoshi Nakamoto's Wallet  Market Analysis and Bitcoin News 1660 TI Mining Hashrate Benchmark & Review  BEST Efficiency GPU for Mining  Overclocks  Miners Bitcoin basics: What is the difficulty target and how does it adjust itself? BTC hashrate all-time high, Chainlink to the Moon  Bitwala Candles Ep.1

Although Bitcoin’s exact hashing power is unknown, it is possible to estimate it from the number of blocks being mined and the current block difficulty. Notes Daily numbers (raw values) may periodically rise or drop as a result of the randomness of block discovery : even with a hashing power constant, the number of blocks mined can vary in day. As you already probably know, AMD released a new series of GPUs – the RX570 and RX580 – a couple of weeks ago. Those are upgraded versions of the existing RX470 and RX480, respectively.The RX 5xx series were really anticipated by the mining community; however, those two new models received mixed reviews. Find out what your expected return is depending on your hash rate and electricity cost. Find out if it's profitable to mine Bitcoin, Ethereum, Litecoin, DASH or Monero. Do you think you've got what it takes to join the tough world of cryptocurrency mining? Mining Difficulty. Ethereum miners experienced increased hash rate since 2016, but nothing even close to Bitcoin’s numbers. Ethereum is still mined using graphics processing unit (GPU) miners. While these devices are far more powerful than central processing units (CPUs), they can’t compare to the capabilities of ASIC miners. 117 Hash/s: Equihash: 110 Watts: 1489 MHz-Asus: Nvidia: Asus GTX 950 Hashrate : GTX 1050 Ti WindForce OC: 300 Hash/s: CryptoNote: 60W-Gigabyte: Nvidia: Gigabyte GTX 1050 Ti WindForce OC Hashrate : GTX 1060: 23.2 MHash/s: Ethereum: 75W: 1733 MHz-Asus: Nvidia: Asus GTX 1060 Hashrate : RX 480 8GB: 28.63 MHash/s: Ethereum: 1290 MHz-Gigabyte: AMD

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Radeon VII Ethereum Mining Performance - Specs Hashrate Profits & More

Bitcoin Mining Difficulty: An Overview - Duration: 4:37. AMBCrypto Recommended for you. 4:37. Why there will never be more than 21 million bitcoin. - Duration: 8:18. Keifer Kif 751 views. What is Bitcoin's "hashrate", and just what does it actually mean? Is there a reason that a greater hashrate is more desirable and what happens when the rate goes down? In this video, shot in ... Bitcoin difficulty 2-month average chart. Source: BlockchainDifficulty refers to the effort required to solve equations on the Bitcoin blockchain, while hash rate is a rough measure of the ... Inside a Bitcoin mine that earns $70K a day - Duration: 5:09. Digital Trends 1,155,514 views. 5:09. Buying a $800 Pre-built Bitcoin Cryptocurrency Mining Rig? Hash rate is used as the speed indicator of a machine that mines Bitcoin on the Blockchain. ... Network Difficulty Rising Faster Than Bitcoin Price - Duration: 14:47. VoskCoin 12,478 views.

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