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Bitcoin Core (formerly Satoshi Client) was designed by the inventor of Bitcoin in 2009. Today, 10 years later there are over 40 million wallets as blockchain download now exceeds 250 gigabytes submitted by kupwjtdo to CryptoCurrency [link] [comments]

Bitcoin Core (formerly Satoshi Client) was designed by the inventor of Bitcoin in 2009. Today, 10 years later there are over 40 million wallets as blockchain download now exceeds 250 gigabytes

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Golden Star Casino Full Review

Payment processing has always been the biggest strain on the online gambling industry. Changing regulatory environments have sent casinos into a tailspin when they find out their main source of deposits is suddenly not available to them. In other cases, when an online casino finds a company willing to take them on as a client, the rates they are charged are as close to robbery as can be; this ends up cutting margins down to a bare minimum, making running an online casino less of an enticing career move.
The introduction of crypto-currency over the last few years has shown some signs of promise in the online gaming space. As the general public gets more accustomed to the idea of Bitcoin and its uses, we will see it adopted across more traditional purchasing. The gaming industry has adopted the technology from the start, with several Bitcoin-only sites popping up in 2013 and beyond. Recently, many providers have added cryptocurrency to their traditional payment methods, offering special bonuses for players to use the option.
Golden Star Casino is one of the true hybrid casinos when it comes to payments. As you will see in the review, the casino has integrated Bitcoin into all facets of their operations, from games to payments to promotions. This is a great way for players who aren’t familiar with the product to be able to give it a try without committing to a Bitcoin-only site.

About Golden Star Casino

Golden Star Casino is owned and operated by Jubise International N.V. Casinos, a Curacao based company. Established in 2012, the company also has a gaming license from the Curacao Gaming Authority. This license isn’t exactly rock-solid for players; the country tends to turn a blind eye to company behavior until it is too late. With the license, however, Jubise is able to attract the payment processors and software vendors it needs to provide you with a positive gaming experience at their site.
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Who Can Play at Golden Star Casino?

Even though the company is licensed in Curacao, which would clearly give the impression that they would take players from the U.S., Golden Star doesn’t allow Americans to deposit or gamble. Well, actually… there is a way, but you need to be aware of what you are getting into. It seems that U.S. players who use Bitcoin to deposit can actually create real money accounts and play at the tables. However, there have been several instances of players trying to withdraw their funds which, once it was determined they were in the U.S., had those funds confiscated and accounts closed. It is hard to say if you can withdraw right into your Bitcoin account without it being detected, but for the time being, I do not advise you try this from the States unless you are willing to take the risk that your deposit may be taken away from you.
As for other restricted countries, here is the list:
  • United Kingdom
  • Spain
  • United States
Also, please bear in mind that certain software suppliers restrict what countries are allowed to access their games. As a result, you may find some of the games written about in this review are not actually available in your country. The best thing to do is to create an account, and you will be able to see all the options for your casino play.

Software Suppliers

As mentioned, Golden Star has chosen to work with several software partners for their brand. This is excellent news for you; the company has chosen a broad spectrum of vendors including some of the most prestigious in the industry. You can find games from the following companies currently at Golden Star Casino:
  • Microgaming
  • Betsoft
  • Net Entertainment
  • iSoftBet
  • Endorphina
  • Ezugi
  • Amatic
  • SoftSwiss
  • Quickfire
  • Belatra
  • Pragmatic Play
The casino games at Golden Star are available in a no-download format, meaning you can play them instantly through your browser. Many of the games are also formatted to be able to be played on most mobile phones or tablets, allowing you to take your casino experience on the move with you no matter where you are.
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The Good Stuff

Jackpots

I love a casino that not only has several progressive jackpots available for its players but one who isn’t shy about telling you who has won them. At Golden Star, you can select from over 20 different jackpot games, and if you look on their jackpots page, there is a scrolling bar of recent winners; no one like to see that a jackpot isn’t paying out. Give some of their jackpot games a go if you want to get a little something extra out of your slots experience.

Bitcoin Slots

This is an interesting option for players; there are slots in the casino lobby that are designed for Bitcoin-only play. Why would a casino do this? Well, with the fluctuating value of Bitcoin these days, players may not want to get hosed on exchange rates. Also, this is an excellent way to have players learn about Bitcoin by having to think regarding the cryptocurrency throughout their entire casino experience.
Satoshi’s Secret is the most popular Bitcoin game in the industry, and you can try it at Golden Star Casino for free if you like to get a feel for the slot machine.

The Bad Stuff

Complaints about Terms and Conditions

No one likes to see complaints about an online casino, and many times I can dismiss them as individuals who are just upset that they lost their money. However, there are recurring concerns about the changing Terms and Conditions at Golden Star Casino. The company denies that they have made any changes without letting their players know, and have taken a strong stance on that accusation. I will continue to monitor that situation; if I find it to be actually happening, then it will be a big strike against the casino.

Games limited by Country

I’ll add this to the Bad Stuff because I live in Canada, and as a result, I am not able to access some of the better games that Golden Star Casino has on their site. While I totally understand why the casino isn’t allowed to offer all their games to all their players, it would be beneficial to have this information laid out in a clear manner somewhere on their website. I would much rather know going in instead of reading a review like this only to find out a game I love is not available when I make my deposit.

Game Selection

As I mentioned, you will find over 900 games at Golden Star Casino. I am going to take a look at all the different categories in more detail for you now.

Slots

It isn’t surprising to hear that the majority of available games in the Golden Star Casino lobby are slots games – this goes for almost every casino in the industry, whether online or land-based. However, having the multiple providers allows this casino to provide you several different looks to their slots catalog. They range from the fantastic content of the Microgaming slots to the 3D slot games that made Betsoft famous.

Table Games

The table games options at Golden Star Casino are a bit underwhelming considering how many suppliers the company has partnered with. Now, I may be missing some of the table games because of where I am reviewing the site from; all accounts are that they aren’t using Microgaming or NetEnt for games outside North America.

Video Poker

Along the same theme, there aren’t as many video poker variants as I would like to see at Golden Star Casino. I know that I am in the minority when it comes to video poker; I like the game more than most people do. Still, an online casino should easily be able to offer as many games as they can. Maybe they will read this review and add some from their vendors; I know they are available!

Specialty Games

One area where Golden Star Casino has apparently spent some time in development is in the Specialty Games offering. Using their partners like Quickfire, the casino gives you many different types of games to play that are not like the typical table games and slots. Many of these games have worse chances of coming out a winner, but I always consider them to be a nice way to take a break from a long session at the Blackjack table.

Live Dealer

Golden Star Casino has selected Ezugi as their Live Dealer provider. While the studios and dealers used by Ezugi are quite nice, there isn’t much in the way of selection from a games perspective. You can play the following games via the Live Dealer function:
  • Bet on Numbers (Bingo variant)
  • Keno
  • Blackjack
  • Roulette
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PROMOTIONS

The promotions at Golden Star are pretty bland overall. They are focused on the deposit bonuses as their primary form of attracting to you to their brand. Here is an overview of the bonuses currently available on the website:

First Deposit Bonus

  • 100% up to €100 or 100 mBTC + 100 FREE SPINS
Make your first deposit in Golden Star Casino and get up to €100 or 100 mBTC and 100 free spins in the Lucky Sweets slot

Second Deposit Bonus

  • 75% up to €100 or 100 mBTC
Keep having fun! Make your second deposit, and we will refill your balance up to €100 or 100 mBTC.

Third Deposit Bonus

  • 50% up to €100 or 100 mBTC
More and more bonuses for you! Get up to €100 or 100 mBTC on third deposit!
The company does have one ongoing bonus for players who play on the weekend. They have a “Have A Nice Weekend” recurring bonus of 50% up to $50 or 50 mBTC.
Overall, it is pretty disappointing to see no leaderboard or jackpot promotions, especially given how many games they could use for these types of offers.

Tournaments

Golden Star Casino does have a large selection of tournaments running on a daily and weekly basis. For someone who gets bored with slots play pretty quickly, I enjoy the tournament concept; if I go on a long run, I can make some additional cash, and it is the only way I actually see any other screen names while I am at the casino.
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Banking

As I have discussed many times in this review, the company seems to be very focused on making you a Bitcoin user, offering special games and bonuses for players who use the cryptocurrency. Golden Star does also have traditional payment methods available to its players; of course, each will be restricted by what countries are available. The most up-to-date payment methods for your country will be listed in the cashier section of the lobby after you login to your account.

Deposit Methods

  • MasterCard
  • Neteller
  • Visa
  • iDEAL
  • Sofortuberwaisung
  • QIWI
  • Trustly
  • Skrill
  • Yandex Money
  • Sberbank Online
  • Cubits
  • Comepay
  • Mobile Commerce

Withdrawal Methods

  • Bank Wire Transfer
  • Neteller
  • Visa
  • iDEAL
  • QIWI
  • Skrill
  • Trustly
  • Yandex Money
  • Cubits
  • Comepay
  • Evroset
  • Mobile Commerce
  • Sberbank

Comp/VIP Program

Golden Star Casino does offer its players a hybrid Comp/VIP program. In essence, this is a comp program that has tiers to it, giving you more enticing conversion rates for your comp points. While I am a big fan of casinos that give you comp points that you can cash in for real money, I am disappointed that there isn’t more to the VIP part of the program. I am hopeful that there is a more individual program that they just don’t advertise.
Here are the levels of the system and what conversion rates come with each level.
  • New Star – (0-149 CP) – no exchange
  • Bronze – (150-999 CP) – 14:1 Exchange
  • Silver – (1000-4999 CP) – 13:1 Exchange
  • Golden – (5000-14,999 CP) – 12:1 Exchange
  • Platinum – (15,000-29,999 CP) – 11:1 Exchange
  • Diamond – (30,000 CP) – 10:1 Exchange

Customer Service

Customer Service at Golden Star is available three ways: a web form on the Support page of their website, email or Live Chat. There is no phone number to reach the casino at this point; the only way to get a hold of them in real time is via the Live Chat function.
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Change the secret key after some time like blockchain support each month, with the goal that the email ID doesn't get defenseless
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Try not to get to the messages on open gadgets, for example, public work area, PC, and on the off chance that you do, make it sure that you log out.
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submitted by Environmental-Dig671 to u/Environmental-Dig671 [link] [comments]

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A blockchain, initially block chain, is a developing rundown of records, called blocks, that are connected utilizing cryptography..A blockchain is basically a computerized record of exchanges that is copied and conveyed over the whole organization of PC frameworks on the blockchain.
On the off chance that you have an inquiry or an issue with the wallet, we urge you to peruse our Support Center. You can peruse articles by means of the primary classifications on the landing page or utilize the hunt bar legitimately to check whether your inquiry as of now has an answer.
In case you can't discover a solution to your inquiry or answer for your issue on the Support Center, you can present a pass to our support group here. It would be ideal if you note that we don't offer support through telephone as of now and don't have a number that you can call. For tips on presenting a ticket, look at our blog entry regarding the matter.
To be the first to know when we turn out new highlights or delivery new substance, follow us on Twitter, similar to us on Facebook, or buy in to our blog. You can likewise connect with us legitimately on Twitter.
In the improvement of the web, one can feature achievement events that can be used to confine the cycle into stages. Among these noteworthy achievements are the creation of the essential wide-zone PC networks during the 1960s, the improvement of an electronic mail system during the 1970s, the development of ethernet later in that decade, the beginning of the web during the 1990s and the creation of the principle projects and web lists later in that decade, among others. Following all of these brand name enhancements, the web changed in a thrilling way. Every movement was indispensable in making the web that we know and rely upon today.
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In like manner, it's possible to recollect the progression blockchain and besides parcel it into stages which are isolated by noteworthy new developments and improvements. Blockchain development has recently been in presence for a modest quantity of the time that the web has, so it's likely this blockchain to come. To be sure, even now, be that as it may, pros have begun to segment the chronicled scenery of blockchain into in any occasion three noteworthy stages.
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While the contemplations that would go into the blockchain were spinning around in programming designing organizations, it was the pseudonymous creator of, who plot the blockchain as we likely am mindful it in the for BTC. Thusly, blockchain advancement began with the Bitcoin association. While blockchain has since continued to see use in a massive grouping of in some sense it was arranged phenomenally for this and for impelling the targets of modernized financial structures even more extensively.
In the most prompt stages, blockchain set up of a common openly available report that reinforces an advanced cash association. Satoshi's idea of blockchain uses 1 megabyte (MB) squares of information on bitcoin trades. Squares are associated together through a , outlining a constant chain. To be sure, even in its most dependable appearances, blockchain development set up tremendous numbers of the Blockchain Support Number central features of these structures, which remain today. Certainly, bitcoin's blockchain stays generally unaltered from these most reliable undertakings.
Stage 2: Smart Contracts
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As time went on, planners began to acknowledge that a blockchain could achieve something other than record trades. Creators of , for instance, had the likelihood that and trust plans could similarly benefit by blockchain the board. Along these lines, ethereum addresses the second-age of the blockchain development.
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The huge headway accomplished by ethereum was the presence of sharp arrangements. Typically, contracts in the standard business world are directed between two separate substances, sometimes with various components helping the oversight cycle. Astute arrangements are those that are self-supervising on a blockchain. They are set off by an event like the demise of an or the achievement of a particular worth target; likewise, the directs itself, making changes shifting and without the Blockchain Support Number commitment of outside components.
Presently, we may regardless be right now handling the unfamiliar ability of splendid arrangements. Thusly, whether or not we have truly continued ahead to the subsequent period of the progression of blockchain is anything but difficult to discredit.
Stage 3: The Future
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One of the critical issues defying blockchain is scaling. Bitcoin remains upset by trade getting ready occasions and Many new progressed Blockchain service number money related structures have attempted to redesign their blockchains to oblige these issues, yet with moving degrees of progress. Later on, one of the most noteworthy enhancements planning for blockchain advancement proceeding will likely have to do with flexibility.
In what capacity will specialized experts give help with getting begun with Blockchain?
Blockchainis one in all the best email services that accompanies totally extraordinary and particular alternatives. It offers customized mail skill that may help you to keep associated alongside your partners, companions and heaps of various people. Sending and accepting messages with Blockchainis done kind of an expert. Here are a few stages that you are needed to follow on the off chance that you might want to actuate began with the email services of Blockchain. We should have a look at them:
Open your program and sort mail.Blockchain.com in it.
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In the event that you are as of now having an AIM screen name then you'll utilize a comparable for your current screen name and secret word. With this, you may get an AIM Mail address that can be supported by the screen name.
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It is correct a similar that on the off chance that you are exploitation any email services that you will even need to confront its specialized accidents. There are times once clients get irritated inferable from specialized issues like worker issues, page not opening, secret phrase issues and a lot of extra. The best and snappiest response to those issues is to incite quick encourage from the geeks. Here are a few manners by which during which authorities will encourage Blockchainusers:
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The initial step is to logout from the record and again sign in by getting into all the central matters.
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After this, join and investigate recover the messages.
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Presently, select "overlooked secret phrase" and enter your username then snap on straightaway.
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How to import messages from Blockchain?
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What is the best approach to send connections?
How to reset the secret phrase of the mail?
What should be possible on the off chance that somebody has overlooked the mail?
How to make envelopes to sort everything?
What are the approaches to set up auto-answer?
How to determine Blerk blunder 1 in Blockchain?
A portion of the counsel to keep away from the glitches
It is very essential to guard your record from outside programmers and interlopers. Simply take a few hints that are given beneath and maintain a strategic distance from the basic defects.
Change the secret key after some time like blockchain support each month, with the goal that the email ID doesn't get defenseless
Convenient clean your throws out from the envelopes utilizing the record more clean
Try not to get to the messages on open gadgets, for example, public work area, PC, and on the off chance that you do, make it sure that you log out.
On the off chance that you have an individual cell phone, at that point just spare the secret phrase, in any case, don't spare your secret word.
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submitted by Environmental-Dig671 to u/Environmental-Dig671 [link] [comments]

Don't blindly follow a narrative, its bad for you and its bad for crypto in general

I mostly lurk around here but I see a pattern repeating over and over again here and in multiple communities so I have to post. I'm just posting this here because I appreciate the fact that this sub is a place of free speech and maybe something productive can come out from this post, while bitcoin is just fucking censorship, memes and moon/lambo posts. If you don't agree, write in the comments why, instead of downvoting. You don't have to upvote either, but when you downvote you are killing the opportunity to have discussion. If you downvote or comment that I'm wrong without providing any counterpoints you are no better than the BTC maxis you despise.
In various communities I see a narrative being used to bring people in and making them follow something without thinking for themselves. In crypto I see this mostly in BTC vs BCH tribalistic arguments:
- BTC community: "Everything that is not BTC is shitcoin." or more recently as stated by adam on twitter, "Everything that is not BTC is a ponzi scheme, even ETH.", "what is ETH supply?", and even that they are doing this for "altruistic" reasons, to "protect" the newcomers. Very convenient for them that they are protecting the newcomers by having them buy their bags
- BCH community: "BTC maxis are dumb", "just increase block size and you will have truly p2p electronic cash", "It is just that simple, there are no trade offs", "if you don't agree with me you are a BTC maxi", "BCH is satoshi's vision for p2p electronic cash"
It is not exclusive to crypto but also politics, and you see this over and over again on twitter and on reddit.
My point is, that narratives are created so people don't have to think, they just choose a narrative that is easy to follow and makes sense for them, and stick with it. And people keep repeating these narratives to bring other people in, maybe by ignorance, because they truly believe it without questioning, or maybe by self interest, because they want to shill you their bags.
Because this is BCH community, and because bitcoin is censored, so I can't post there about the problems in the BTC narrative (some of which are IMO correctly identified by BCH community), I will stick with the narrative I see in the BCH community.
The culprit of this post was firstly this post by user u/scotty321 "The BTC Paradox: “A 1 MB blocksize enables poor people to run their own node!” “Okay, then what?” “Poor people won’t be able to use the network!”". You will see many posts of this kind being made by u/Egon_1 also. Then you have also this comment in that thread by u/fuck_____________1 saying that people that want to run their own nodes are retarded and that there is no reason to want to do that. "Just trust block explorer websites". And the post and comment were highly upvoted. Really? You really think that there is no problem in having just a few nodes on the network? And that the only thing that secures the network are miners?
As stated by user u/co1nsurf3r in that thread:
While I don't think that everybody needs to run a node, a full node does publish blocks it considers valid to other nodes. This does not amount to much if you only consider a single node in the network, but many "honest" full nodes in the network will reduce the probability of a valid block being withheld from the network by a collusion of "hostile" node operators.
But surely this will not get attention here, and will be downvoted by those people that promote the narrative that there is no trade off in increasing the blocksize and the people that don't see it are retarded or are btc maxis.
The only narrative I stick to and have been for many years now is that cryptocurrency takes power from the government and gives power to the individual, so you are not restricted to your economy as you can participate in the global economy. There is also the narrative of banking the bankless, which I hope will come true, but it is not a use case we are seeing right now.
Some people would argue that removing power from gov's is a bad thing, but you can't deny the fact that gov's can't control crypto (at least we would want them not to).
But, if you really want the individuals to remain in control of their money and transact with anyone in the world, the network needs to be very resistant to any kind of attacks. How can you have p2p electronic cash if your network just has a handful couple of nodes and the chinese gov can locate them and just block communication to them? I'm not saying that this is BCH case, I'm just refuting the fact that there is no value in running your own node. If you are relying on block explorers, the gov can just block the communication to the block explorer websites. Then what? Who will you trust to get chain information? The nodes needs to be decentralized so if you take one node down, many more can appear so it is hard to censor and you don't have few points of failure.
Right now BTC is focusing on that use case of being difficult to censor. But with that comes the problem that is very expensive to transact on the network, which breaks the purpose of anyone being able to participate. Obviously I do think that is also a major problem, and lightning network is awful right now and probably still years away of being usable, if it ever will. The best solution is up for debate, but thinking that you just have to increase the blocksize and there is no trade off is just naive or misleading. BCH is doing a good thing in trying to come with a solution that is inclusive and promotes cheap and fast transactions, but also don't forget centralization is a major concern and nothing to just shrug off.
Saying that "a 1 MB blocksize enables poor people to run their own" and that because of that "Poor people won’t be able to use the network" is a misrepresentation designed to promote a narrative. Because 1MB is not to allow "poor" people to run their node, it is to facilitate as many people to run a node to promote decentralization and avoid censorship.
Also an elephant in the room that you will not see being discussed in either BTC or BCH communities is that mining pools are heavily centralized. And I'm not talking about miners being mostly in china, but also that big pools control a lot of hashing power both in BTC and BCH, and that is terrible for the purpose of crypto.
Other projects are trying to solve that. Will they be successful? I don't know, I hope so, because I don't buy into any narrative. There are many challenges and I want to see crypto succeed as a whole. As always guys, DYOR and always question if you are not blindly following a narrative. I'm sure I will be called BTC maxi but maybe some people will find value in this. Don't trust guys that are always posting silly "gocha's" against the other "tribe".
EDIT: User u/ShadowOfHarbringer has pointed me to some threads that this has been discussed in the past and I will just put my take on them here for visibility, as I will be using this thread as a reference in future discussions I engage:
When there was only 2 nodes in the network, adding a third node increased redundancy and resiliency of the network as a whole in a significant way. When there is thousands of nodes in the network, adding yet another node only marginally increase the redundancy and resiliency of the network. So the question then becomes a matter of personal judgement of how much that added redundancy and resiliency is worth. For the absolutist, it is absolutely worth it and everyone on this planet should do their part.
What is the magical number of nodes that makes it counterproductive to add new nodes? Did he do any math? Does BCH achieve this holy grail safe number of nodes? Guess what, nobody knows at what number of nodes is starts to be marginally irrelevant to add new nodes. Even BTC today could still not have enough nodes to be safe. If you can't know for sure that you are safe, it is better to try to be safer than sorry. Thousands of nodes is still not enough, as I said, it is much cheaper to run a full node as it is to mine. If it costs millions in hash power to do a 51% attack on the block generation it means nothing if it costs less than $10k to run more nodes than there are in total in the network and cause havoc and slowing people from using the network. Or using bot farms to DDoS the 1000s of nodes in the network. Not all attacks are monetarily motivated. When you have governments with billions of dollars at their disposal and something that could threat their power they could do anything they could to stop people from using it, and the cheapest it is to do so the better
You should run a full node if you're a big business with e.g. >$100k/month in volume, or if you run a service that requires high fraud resistance and validation certainty for payments sent your way (e.g. an exchange). For most other users of Bitcoin, there's no good reason to run a full node unless you reel like it.
Shouldn't individuals benefit from fraud resistance too? Why just businesses?
Personally, I think it's a good idea to make sure that people can easily run a full node because they feel like it, and that it's desirable to keep full node resource requirements reasonable for an enthusiast/hobbyist whenever possible. This might seem to be at odds with the concept of making a worldwide digital cash system in which all transactions are validated by everybody, but after having done the math and some of the code myself, I believe that we should be able to have our cake and eat it too.
This is recurrent argument, but also no math provided, "just trust me I did the math"
The biggest reason individuals may want to run their own node is to increase their privacy. SPV wallets rely on others (nodes or ElectronX servers) who may learn their addresses.
It is a reason and valid one but not the biggest reason
If you do it for fun and experimental it good. If you do it for extra privacy it's ok. If you do it to help the network don't. You are just slowing down miners and exchanges.
Yes it will slow down the network, but that shows how people just don't get the the trade off they are doing
I will just copy/paste what Satoshi Nakamoto said in his own words. "The current system where every user is a network node is not the intended configuration for large scale. That would be like every Usenet user runs their own NNTP server."
Another "it is all or nothing argument" and quoting satoshi to try and prove their point. Just because every user doesn't need to be also a full node doesn't mean that there aren't serious risks for having few nodes
For this to have any importance in practice, all of the miners, all of the exchanges, all of the explorers and all of the economic nodes should go rogue all at once. Collude to change consensus. If you have a node you can detect this. It doesn't do much, because such a scenario is impossible in practice.
Not true because as I said, you can DDoS the current nodes or run more malicious nodes than that there currently are, because is cheap to do so
Non-mining nodes don't contribute to adding data to the blockchain ledger, but they do play a part in propagating transactions that aren't yet in blocks (the mempool). Bitcoin client implementations can have different validations for transactions they see outside of blocks and transactions they see inside of blocks; this allows for "soft forks" to add new types of transactions without completely breaking older clients (while a transaction is in the mempool, a node receiving a transaction that's a new/unknown type could drop it as not a valid transaction (not propagate it to its peers), but if that same transaction ends up in a block and that node receives the block, they accept the block (and the transaction in it) as valid (and therefore don't get left behind on the blockchain and become a fork). The participation in the mempool is a sort of "herd immunity" protection for the network, and it was a key talking point for the "User Activated Soft Fork" (UASF) around the time the Segregated Witness feature was trying to be added in. If a certain percentage of nodes updated their software to not propagate certain types of transactions (or not communicate with certain types of nodes), then they can control what gets into a block (someone wanting to get that sort of transaction into a block would need to communicate directly to a mining node, or communicate only through nodes that weren't blocking that sort of transaction) if a certain threshold of nodes adheres to those same validation rules. It's less specific than the influence on the blockchain data that mining nodes have, but it's definitely not nothing.
The first reasonable comment in that thread but is deep down there with only 1 upvote
The addition of non-mining nodes does not add to the efficiency of the network, but actually takes away from it because of the latency issue.
That is true and is actually a trade off you are making, sacrificing security to have scalability
The addition of non-mining nodes has little to no effect on security, since you only need to destroy mining ones to take down the network
It is true that if you destroy mining nodes you take down the network from producing new blocks (temporarily), even if you have a lot of non mining nodes. But, it still better than if you take down the mining nodes who are also the only full nodes. If the miners are not the only full nodes, at least you still have full nodes with the blockchain data so new miners can download it and join. If all the miners are also the full nodes and you take them down, where will you get all the past blockchain data to start mining again? Just pray that the miners that were taken down come back online at some point in the future?
The real limiting factor is ISP's: Imagine a situation where one service provider defrauds 4000 different nodes. Did the excessive amount of nodes help at all, when they have all been defrauded by the same service provider? If there are only 30 ISP's in the world, how many nodes do we REALLY need?
You cant defraud if the connection is encrypted. Use TOR for example, it is hard for ISP's to know what you are doing.
Satoshi specifically said in the white paper that after a certain point, number of nodes needed plateaus, meaning after a certain point, adding more nodes is actually counterintuitive, which we also demonstrated. (the latency issue). So, we have adequately demonstrated why running non-mining nodes does not add additional value or security to the network.
Again, what is the number of nodes that makes it counterproductive? Did he do any math?
There's also the matter of economically significant nodes and the role they play in consensus. Sure, nobody cares about your average joe's "full node" where he is "keeping his own ledger to keep the miners honest", as it has no significance to the economy and the miners couldn't give a damn about it. However, if say some major exchanges got together to protest a miner activated fork, they would have some protest power against that fork because many people use their service. Of course, there still needs to be miners running on said "protest fork" to keep the chain running, but miners do follow the money and if they got caught mining a fork that none of the major exchanges were trading, they could be coaxed over to said "protest fork".
In consensus, what matters about nodes is only the number, economical power of the node doesn't mean nothing, the protocol doesn't see the net worth of the individual or organization running that node.
Running a full node that is not mining and not involved is spending or receiving payments is of very little use. It helps to make sure network traffic is broadcast, and is another copy of the blockchain, but that is all (and is probably not needed in a healthy coin with many other nodes)
He gets it right (broadcasting transaction and keeping a copy of the blockchain) but he dismisses the importance of it
submitted by r0bo7 to btc [link] [comments]

There are many wallet applications across various mobile and desktop operating systems, here are some recommendations

Blue wallet – A custodial or non-custodial wallet (depending on configuration) with On-chain and Lightning payment capability. Users also have the ability to purchase Bitcoin directly on the wallet through P2P exchange HodlHodl. (Google Play/App Store/Mac)
Wallet Of Satoshi – A custodial wallet that supports Lightning payments. (Available Google Play/App Store)
Breez Wallet – An open-source non-custodial wallet with easy Lightning network channel set-up. (Google Play/App Store)
Electrum Wallet – An open-source non-custodial wallet on Desktop and mobile with easy Lightning network channel set-up. (Google Play/Linux/PC/MacOS/Python)

Source
submitted by parakite to lightningnetwork [link] [comments]

Remote node rapidly cycling between connecting and disconnecting

I couldn't find a post where someone has asked about a similar issue, so hopefully someone can either point me in the right direction or knows how to resolve this issue!
I have a remote full node running as a Tor hidden service which is open to inbound connections (confirmed via bitcoin-cli getpeerinfo and also connects with my other wallet.
I pointed the Bisq client to my remote node as [address].onion:8333 and can see it will briefly connect but then disconnect again. It will then cycle through this connecting / dying / reconnecting endlessly.
A segment of the log output looks like this (I have redacted my precise onion address though I will probably cycle a new set of keys soon - just privacy reasons I don't want a paper trail associated with this account - if you need it to help provide support DM me):
Jul-17 11:16:40.318 [BlockingClient network thread for xxxxxxxxx.onion:8333] INFO o.b.c.l.DownloadProgressTracker: Chain download switched to [xxxxxxxxx.onion]:8333
Jul-17 11:16:40.399 [JavaFX Application Thread] INFO b.c.d.node.parser.BlockParser: Parsing 1 transactions at block height 633842 took 0 ms
Jul-17 11:16:40.619 [JavaFX Application Thread] INFO b.c.d.node.parser.BlockParser: Parsing 0 transactions at block height 633843 took 0 ms
Jul-17 11:16:40.814 [BlockingClient network thread for xxxxxxxxx.onion:8333] INFO org.bitcoinj.core.PeerGroup: [xxxxxxxxx.onion]:8333: Peer died (0 connected, 0 pending, 1 max)
Jul-17 11:16:40.814 [BlockingClient network thread for xxxxxxxxx.onion:8333] INFO org.bitcoinj.core.PeerGroup: Download peer died. Picking a new one.
Jul-17 11:16:40.814 [BlockingClient network thread for xxxxxxxxx.onion:8333] INFO org.bitcoinj.core.PeerGroup: Unsetting download peer: [xxxxxxxxx.onion]:8333
Jul-17 11:16:40.815 [PeerGroup Thread] INFO org.bitcoinj.core.PeerGroup: Peer discovery took 5.431 μs and returned 0 items
Jul-17 11:16:40.815 [PeerGroup Thread] INFO org.bitcoinj.core.PeerGroup: Waiting 1500 msec before next connect attempt to [xxxxxxxxx.onion]:8333
Jul-17 11:16:42.058 [JavaFX Application Thread] INFO b.c.d.node.parser.BlockParser: Parsing 1 transactions at block height 633848 took 0 ms
Jul-17 11:16:42.216 [JavaFX Application Thread] INFO b.c.d.node.parser.BlockParser: Parsing 0 transactions at block height 633849 took 0 ms
Jul-17 11:16:42.316 [PeerGroup Thread] INFO org.bitcoinj.core.PeerGroup: Attempting connection to [xxxxxxxxx.onion]:8333 (0 connected, 1 pending, 1 max)
Jul-17 11:16:42.378 [JavaFX Application Thread] INFO b.c.d.node.parser.BlockParser: Parsing 0 transactions at block height 633850 took 0 ms
Jul-17 11:16:42.538 [JavaFX Application Thread] INFO b.c.d.node.parser.BlockParser: Parsing 0 transactions at block height 633851 took 0 ms
Jul-17 11:16:42.598 [BlockingClient network thread for xxxxxxxxx.onion:8333] INFO org.bitcoinj.core.Peer: Announcing to xxxxxxxxx.onion:8333 as: /bitcoinj:0.14.7.bisq.1-SNAPSHOT/Bisq:1.3.5/
Jul-17 11:16:42.703 [JavaFX Application Thread] INFO b.c.d.node.parser.BlockParser: Parsing 1 transactions at block height 633852 took 0 ms
Jul-17 11:16:42.879 [BlockingClient network thread for xxxxxxxxx.onion:8333] INFO org.bitcoinj.core.Peer: [xxxxxxxxx.onion]:8333: Got version=70015, subVer='/Satoshi:0.20.99/', services=0x1033, time=2020-07-17 11:16:41, blocks=639615
Jul-17 11:16:42.880 [BlockingClient network thread for xxxxxxxxx.onion:8333] INFO org.bitcoinj.core.PeerGroup: [xxxxxxxxx.onion]:8333: New peer (1 connected, 0 pending, 1 max)

and then will die and repeat the cycle etc.
Any ideas?
submitted by Athator to bisq [link] [comments]

Building Ergo: SPV security

There’s often a tension in the crypto world between security and convenience. That trade-off is unacceptable if we want these technologies to be widely used. Here’s how Ergo addresses one common and very important issue.
We all know that the most secure way to use Bitcoin, or any crypto, is to download a copy of the blockchain and run a full node yourself. That way, every time you or anyone else makes a transaction, your client checks the blockchain to ensure it’s valid. You don’t have to trust anyone else.
A full Bitcoin node checks all the blocks in the blockchain (using headers) and makes sure there are no fraudulent transactions. It’s a very secure way of using crypto – but there’s a problem. It requires significant bandwidth, storage and processing power. That kind of commodity hardware is expensive, and using a full node to validate and make transactions is in any case unsuitable for mobile devices. This is particularly true for Bitcoin, where the blockchain is over 270 GB and counting.
SPV
Simplified Payment Verification (SPV) is designed to address this problem, as described in the Bitcoin white paper:
Satoshi notes that this is not a perfect solution, and is vulnerable to an attacker overpowering the network and fooling SPV users.
Moreover, while SPV mode is intended for resource-limited devices, even this ‘lite’ approach is not always feasible. Ethereum’s headers alone total around 5 GB to download. Thus Ethereum mobile clients do not validate chain validity and so blindly have to trust third parties.
There are proposals to reduce the requirements for SPV mode by checking just a few random headers, instead of all of them. But it’s hard to do that securely.
Efficient SPV
Several years have been spent researching and developing secure protocols that allow for efficient SPV clients. The two best-known and most reliable protocols are NiPoPoWs and FlyClient.
Ergo implements NiPoPoWs, or Non-interactive Proof-of-Proof-of-Work. This technology can be explored in full on this dedicated website: https://nipopows.com:
This enables us to build a mobile SPV client that requires around just 100KB of block headers to be downloaded.
A super-efficient Ergo wallet with SPV security is in development, so stay tuned for more updates!
submitted by eleanorcwhite to btc [link] [comments]

Building Ergo: SPV security

There’s often a tension in the crypto world between security and convenience. That trade-off is unacceptable if we want these technologies to be widely used. Here’s how Ergo addresses one common and very important issue.
We all know that the most secure way to use Bitcoin, or any crypto, is to download a copy of the blockchain and run a full node yourself. That way, every time you or anyone else makes a transaction, your client checks the blockchain to ensure it’s valid. You don’t have to trust anyone else.
A full Bitcoin node checks all the blocks in the blockchain (using headers) and makes sure there are no fraudulent transactions. It’s a very secure way of using crypto – but there’s a problem. It requires significant bandwidth, storage and processing power. That kind of commodity hardware is expensive, and using a full node to validate and make transactions is in any case unsuitable for mobile devices. This is particularly true for Bitcoin, where the blockchain is over 270 GB and counting.
SPV
Simplified Payment Verification (SPV) is designed to address this problem, as described in the Bitcoin white paper:
Satoshi notes that this is not a perfect solution, and is vulnerable to an attacker overpowering the network and fooling SPV users.
Moreover, while SPV mode is intended for resource-limited devices, even this ‘lite’ approach is not always feasible. Ethereum’s headers alone total around 5 GB to download. Thus Ethereum mobile clients do not validate chain validity and so blindly have to trust third parties.
There are proposals to reduce the requirements for SPV mode by checking just a few random headers, instead of all of them. But it’s hard to do that securely.
Efficient SPV
Several years have been spent researching and developing secure protocols that allow for efficient SPV clients. The two best-known and most reliable protocols are NiPoPoWs and FlyClient.
Ergo implements NiPoPoWs, or Non-interactive Proof-of-Proof-of-Work. This technology can be explored in full on this dedicated website: https://nipopows.com:
This enables us to build a mobile SPV client that requires around just 100KB of block headers to be downloaded.
A super-efficient Ergo wallet with SPV security is in development, so stay tuned for more updates!
submitted by eleanorcwhite to btc [link] [comments]

Liquid CAD: Canadian dollar payments on the Liquid Sidechain

Hello fellow Canadian bitcoiners or bitcoinca! You will find below all the information related to the launch of Liquid CAD and Bull Bitcoin's Liquid Bitcoin integration. I'll be checking comments here to answer your questions! I'm also posting some comments on my announcement tweet here: https://twitter.com/francispouliot\_/status/1245758698120605697?s=20

Making the Canadian Dollar Bleed Into Bitcoin

Building the infrastructure for the Bitcoin Standard in Canada before the collapse of fiat currencies is the critical mission objective that drives innovation at Bull Bitcoin.
We are very excited to announce an important milestone in fulfilling this duty: the public release of Liquid CAD, our newest product designed to accelerate and facilitate the adoption of Bitcoin.
Liquid CAD is a non-custodial prepaid payment system denominated in Canadian dollars. Units of Liquid CAD (L-CAD) consist of vouchers issued on the Liquid Network as confidential bearer assets that can be transacted peer-to-peer using a Liquid wallet.
Users acquire Liquid CAD by withdrawing their account balance out of Bull Bitcoin, by purchasing Liquid CAD with Bitcoin on Bull Bitcoin, by using the Liquid CAD withdrawal method on other Bitcoin liquidity providers such as Aquanow or by accepting L-CAD as method of payment.
L-CAD assets can only be redeemed for Bitcoin. They cannot be redeemed for a fiat currency payment.
Liquid CAD is a unique project rethinking the concept of fiat-pegged assets, avoiding the banking business model of “fiatcoin” (aka stablecoins) in favor of a prepaid payments model entirely centred around Bitcoin on-ramp and off-ramp. Liquid CAD is not a currency, nor is it a security: it is a prepaid card.
Importantly, the business model of Liquid CAD is not to collect interest on funds in our custody, unlike fiatcoins, but rather to drive the sales of Bitcoin from which we derive our revenue and we benefit from Liquid CAD assets being cashed out and thus removed from our balance sheet. Bull Bitcoin does not get any revenue from interest.
Every time an L-CAD token is purchased by a user, the amount of dollars deposited on Bull Bitcoin is guaranteed to one day be used by someone to purchase Bitcoin. It’s a one-way street: once a unit of fiat is tokenized as L-CAD, it’s never going back to its off-chain fiat form and will ultimately result in a buy order on a Bitcoin trading platform.
The Liquid CAD logo is a drop of blood because our objective is to accelerate “fiat bleed”, a phenomenon best described by Pierre Rochard in his magnificent essay Speculative Attack:
“Bitcoin will not be eagerly adopted by the mainstream, it will be forced upon them. Forced, as in “compelled by economic reality”. People will be forced to pay with bitcoins, not because of ‘the technology’, but because no one will accept their worthless fiat for payments. Contrary to popular belief, good money drives out bad. This “driving out” has started as a small fiat bleed. It will rapidly escalate into Class IV hemorrhaging due to speculative attacks on weak fiat currencies. The end result will be hyperbitcoinization, i.e. “your money is no good here. Bitcoins are not just good money, they are the best money. The Bitcoin network has the best monetary policy and the best brand. We should therefore expect that bitcoins will drive out bad, weak currencies. My own prediction is that slow bleed has been accelerating and is only the first step. The second step will be speculative attacks that use bitcoins as a platform. The third and final step will be hyperbitcoinization.”
Different representations of Canadian dollars compete to be used as payment methods (cash, bank balances, PayPal balances, closed-loop prepaid cards, open-loop prepaid cards, etc.) and that the winner will be the one that has the best Bitcoin saleability, i.e. which can be most easily sold for Bitcoin at a moment’s notice.
We’re very proud to provide this alternative payment method to Canadians in a time where the banking system is falling deeper into crisis, especially as the Canadian dollar is demonstrating itself to be one of the most pointless and weakest currencies that nobody really wants to hold.
Finally, we’re very happy to be partnering with Aquanow, our recommended institutional liquidity provider for high-volume BTC-CAD trading. They will accept Liquid CAD deposits and withdrawals as being interchangeable with Canadian dollars. We hope that Liquid CAD will become the standard representation of Canadian dollar value among Canadian Bitcoin users.

Liquid Bitcoin (L-BTC) integration

In addition to Liquid CAD, Bull Bitcoin is also announcing that Liquid Bitcoin (L-BTC) payments are now supported interchangeably with Bitcoin transactions for all Bull Bitcoin services. This means that our users can buy, sell and spend L-BTC instead of BTC.
Canadian Bitcoin traders can purchase L-BTC from BullBitcoin.com and fund their international trading accounts with L-BTC using ultra fast and cheap confidential transactions. They can also cash-out their Bitcoin balance as L-BTC from these platforms and sell those L-BTC for fiat on Bylls.com, avoiding risky and expensive international wire transfers to unknown and untrusted foreign banks.
The transactional benefits of L-BTC are very potent:
Disclaimer: Liquid Bitcoin (L-BTC) is not the same as Bitcoin (BTC). L-BTC Liquid Network assets are IOUs for Bitcoin held in a multisignature contract by the Liquid Network federation. The custody of the underlying Bitcoin is managed by a decentralized network of 15 members which process transactions and withdrawals from the multisignature contract according to the Liquid Federation protocol rules.

Liquid CAD detailed overview

Peer-to-peer prepaid payments by Bull Bitcoin

Liquid CAD is a non-custodial prepaid payment system denominated in Canadian dollars. Units of Liquid CAD (L-CAD) consist of vouchers issued on the Liquid Network as confidential bearer assets that can be transacted peer-to-peer using a Liquid wallet. Users acquire Liquid CAD by withdrawing their account balance out of the Bull Bitcoin, by purchasing Liquid CAD with Bitcoin on Bull Bitcoin, by using the Liquid CAD withdrawal method on other Bitcoin liquidity providers such as Aquanow or by accepting L-CAD as method of payment.

A new payment method in Canada

Liquid CAD can be used by anyone to send and receive payments denominated in Canadian dollars. Because of the permissionless nature of the Liquid Network, Bull Bitcoin cannot prevent Liquid CAD from being traded on secondary markets. Merchants, individuals and institutions must accept that only Bull Bitcoin can guarantee redemption of the L-CAD and that this redemption will be exclusively paid out in Bitcoin. Accepting Liquid CAD as payment is, in effect, the same as accepting gift cards as payment. However, Bitcoin being the most liquid commodity on the market, it can be transformed into any other currency easily for example using services such a Bylls which allow Canadians to pay all their utility bills, send bank transfers to third parties or sell Bitcoin to their bank account.

Making Canadian dollars bleed into Bitcoin

The purpose of Liquid CAD is to facilitate the transfer fiat in the context of the purchase and sale of Bitcoin and providing innovative new services that help Bitcoin users hedge the value of Canadian dollars against Bitcoin in the context of their commercial transactions. Our goal is to create a payment method that is specifically targeting Bitcoin users that wish to liquidate Canadian dollar payments for Bitcoin. Our mission is to accelerate the phenomenon known as “fiat bleed” whereby Canadians will gradually abandon inferior money (such as the Canadian dollar) for the superior Bitcoin alternative. Every Liquid CAD issued will ultimately be exchanged into Bitcoin. We are excited for the day Liquid CAD will be made obsolete by the inevitable hyperbitcoinization of the Canadian economy.

Regulation: is Liquid CAD a stablecoin?

Liquid CAD is not a general-purpose “stablecoin”. It is a closed-loop Bitcoin prepaid card. It can exclusively be redeemed for Bitcoin on the Bull Bitcoin platform (or at affiliated merchants). Bull Bitcoin is the only counterparty, and it cannot be redeemed for a canadian dollar payment. It is substantively the same as Canadian Tire money. Unlike stablecoins, Bull Bitcoin makes money with L-CAD by driving the sales of Bitcoin on its platform, and doesn’t collect interest on the deposits of Liquid CAD users.
The purchase of Liquid CAD with Canadian dollars is regulated in the Province of Quebec as a prepaid card under the Consumer Protection Act and the Regulation respecting the application of the Consumer Protection Act Consumer Protection Act which define a prepaid card as “a certificate, card or other medium of exchange that is paid in advance and allows the consumer to acquire goods or services from one or more merchants”.
The purchase of Bitcoin using Liquid CAD is regulated in Canada by the Financial Transactions and Reports Analysis Centre of Canada under the Proceeds of Crime (Money Laundering) and Terrorist Financing Act (S.C. 2000, c. 17).

Counterparty risk

Like all other closed-loop prepaid instruments, Liquid CAD has counterparty risk. The owners are trusting that they will eventually be able to use Liquid CAD as a payment method on the Bull Bitcoin platform to fund their account and purchase Bitcoin. When a Bull Bitcoin user withdraws his Bull Bitcoin account balance as an L-CAD token, the Canadian dollars he used to fund this balance remains in our possession in the same manner as regular Bull Bitcoin vouchers. These funds are used to execute Bitcoin purchases when L-CAD owners decide to redeem their L-CAD for Bitcoin. In essence, each L-CAD is “backed” by the Canadian dollar deposit of the user that withdraws it from the platform in the first place.

Benefits of using and accepting Liquid CAD for payments

Irreversible, non-custodial and no bank required

Liquid CAD payments cannot be charged back, cancelled, delayed or frozen. There is no intermediary between the sender and the recipient. It is a bearer asset: whoever owns the keys owns the coins. It is a perfect way to accept payments or transact securely without depending on banks and payment processors. Canadians can use Liquid CAD to purchase Bitcoin and then use Bylls.com to pay billers, personal payees or simply sell Bitcoin to their bank account.

Fast transaction and cheap fees

Liquid Network transactions are sent and received instantly and require 1 minute for settlement. Transaction fees paid using Liquid Bitcoin can be as low as 300 satoshis per transaction (a few cents). In order to benefit from these cheap fees, make sure to download the latest version of the Elements software and ensure that the minimum transaction fee is set at 100 satoshis per kilobye. It only takes a few minutes to set up a free Liquid Network wallet, such a Green Wallet by blockstream.

Confidential transactions

Unlike Bitcoin, transactions between the sender and the recipient are encrypted. It is impossible for third parties observing Liquid CAD transactions on a block explorer to determine the amount of the transaction. In addition, it’s also impossible to even know you are using Liquid CAD, since the data identifying the asset itself is also encrypted!

What are the use-cases of Liquid CAD?

Buying and selling Bitcoin

The primary use-case of Liquid CAD is to make it easier to buy and sell Bitcoin on the Bull Bitcoin platform. By withdrawing their balance from Bull Bitcoin, users are reducing some (but not all) of the custody risk associated with keeping fiat currency on an exchange. For example, use Liquid CAD to create your own non-custodial dollar-cost-averaging schedule!

Onboarding new Bitcoin users

New users can be overwhelmed by the experience of dealing with banks to buy Bitcoin (and the heavier KYC process of account funding). You may be tempted to buy Bitcoin for them, but that will impose a lot of burdens on you. It’s much easier to set them up with a Green wallet, send them Liquid CAD and show them how to use Bull Bitcoin! They decide when is the right time for them to invest, with a lower KYC burden.

Hedging Bitcoin price

You may believe the price of Bitcoin will go down in the short term, but you still want to hold Bitcoin in the long term. Normally you have two options: short the Bitcoin price (very risky!) or sell your Bitcoin and receive Canadian dollars in your bank account (inconvenient!). By selling your Bitcoin for Liquid CAD, you can lock in the value of Bitcoin right now and buy them back later without needing to use your bank account or taking risks with leverage.

Accepting payments

As a merchant, you want to receive the settlement of payments in Bitcoin. But this imposes a burden on your customers, which have to deal with the Bitcoin price volatility when they are paying you. Ask your clients to pay you with Liquid CAD, and you can get the settlement with Bitcoin on your own terms.

Payroll and suppliers

What if your staff or suppliers want to get paid in Bitcoin? It can be very difficult, because this means you are effectively buying Bitcoin on their behalf. Instead, you can pay them in Liquid CAD and let them deal with the process of choosing the exchange rate and using their own wallet. Let them deal with the tax burden, exchange rates and Bitcoin wallet security.

List of Bull Bitcoin Liquid Network features

Withdraw account balance as L-CAD

This is conceptually the same as “buying” Liquid CAD with your account balance. We call it “Withdrawing L-CAD” because on the Bull Bitcoin platform, we consider L-CAD and CAD to be interchangeable and fungible.

Fund account balance with L-CAD

To redeem Liquid CAD for Bitcoin, users need to first fund their account by selecting the “Deposit L-CAD” payment method. Bull Bitcoin users must always fund their account first before buying Bitcoin, and then purchase Bitcoin with their account balances. Reminder: account balances cannot be withdraw as fiat payments, but can later be withdrawn again as L-CAD.

Sell Bitcoin for L-CAD

You can sell Bitcoin and receive Liquid CAD payments instead of a bill payment, personal payee payment or bank payment. As soon as the Bitcoin transaction is confirmed, the Liquid CAD transaction is sent to the address you provided.

Liquid Bitcoin (L-BTC) and Bitcoin interchangeability

For every service which involves a Bitcoin payment, the user can substitute traditional Bitcoin payments for Liquid Bitcoin payments. This includes:
***********************************
Original medium post: https://medium.com/@francispouliot/liquid-cad-canadian-dollar-payments-on-the-liquid-sidechain-f7e3309f8a5f
Official landing page: lcad.bullbitcoin.com
Application page: bullbitcoin.com/l-cad
submitted by FrancisPouliot to BitcoinCA [link] [comments]

Building Ergo: SPV security

There’s often a tension in the crypto world between security and convenience. That trade-off is unacceptable if we want these technologies to be widely used. Here’s how Ergo addresses one common and very important issue.
We all know that the most secure way to use Bitcoin, or any crypto, is to download a copy of the blockchain and run a full node yourself. That way, every time you or anyone else makes a transaction, your client checks the blockchain to ensure it’s valid. You don’t have to trust anyone else.
A full Bitcoin node checks all the blocks in the blockchain (using headers) and makes sure there are no fraudulent transactions. It’s a very secure way of using crypto – but there’s a problem. It requires significant bandwidth, storage and processing power. That kind of commodity hardware is expensive, and using a full node to validate and make transactions is in any case unsuitable for mobile devices. This is particularly true for Bitcoin, where the blockchain is over 270 GB and counting.
SPV
Simplified Payment Verification (SPV) is designed to address this problem, as described in the Bitcoin white paper:
Satoshi notes that this is not a perfect solution, and is vulnerable to an attacker overpowering the network and fooling SPV users.
Moreover, while SPV mode is intended for resource-limited devices, even this ‘lite’ approach is not always feasible. Ethereum’s headers alone total around 5 GB to download. Thus Ethereum mobile clients do not validate chain validity and so blindly have to trust third parties.
There are proposals to reduce the requirements for SPV mode by checking just a few random headers, instead of all of them. But it’s hard to do that securely.
Efficient SPV
Several years have been spent researching and developing secure protocols that allow for efficient SPV clients. The two best-known and most reliable protocols are NiPoPoWs and FlyClient.
Ergo implements NiPoPoWs, or Non-interactive Proof-of-Proof-of-Work. This technology can be explored in full on this dedicated website: https://nipopows.com:
This enables us to build a mobile SPV client that requires around just 100KB of block headers to be downloaded.
A super-efficient Ergo wallet with SPV security is in development, so stay tuned for more updates!
Share post:
Facebook
Twitter
Ergoplatform.org
submitted by kushti to ergoplatformorg [link] [comments]

Building Ergo: SPV security

There’s often a tension in the crypto world between security and convenience. That trade-off is unacceptable if we want these technologies to be widely used. Here’s how Ergo addresses one common and very important issue.
We all know that the most secure way to use Bitcoin, or any crypto, is to download a copy of the blockchain and run a full node yourself. That way, every time you or anyone else makes a transaction, your client checks the blockchain to ensure it’s valid. You don’t have to trust anyone else.
A full Bitcoin node checks all the blocks in the blockchain (using headers) and makes sure there are no fraudulent transactions. It’s a very secure way of using crypto – but there’s a problem. It requires significant bandwidth, storage and processing power. That kind of commodity hardware is expensive, and using a full node to validate and make transactions is in any case unsuitable for mobile devices. This is particularly true for Bitcoin, where the blockchain is over 270 GB and counting.
SPV
Simplified Payment Verification (SPV) is designed to address this problem, as described in the Bitcoin white paper:
Satoshi notes that this is not a perfect solution, and is vulnerable to an attacker overpowering the network and fooling SPV users.
Moreover, while SPV mode is intended for resource-limited devices, even this ‘lite’ approach is not always feasible. Ethereum’s headers alone total around 5 GB to download. Thus Ethereum mobile clients do not validate chain validity and so blindly have to trust third parties.
There are proposals to reduce the requirements for SPV mode by checking just a few random headers, instead of all of them. But it’s hard to do that securely.
Efficient SPV
Several years have been spent researching and developing secure protocols that allow for efficient SPV clients. The two best-known and most reliable protocols are NiPoPoWs and FlyClient.
Ergo implements NiPoPoWs, or Non-interactive Proof-of-Proof-of-Work. This technology can be explored in full on this dedicated website: https://nipopows.com:
This enables us to build a mobile SPV client that requires around just 100KB of block headers to be downloaded.
A super-efficient Ergo wallet with SPV security is in development, so stay tuned for more updates!
submitted by eleanorcwhite to CryptoMarkets [link] [comments]

Building Ergo: SPV security

There’s often a tension in the crypto world between security and convenience. That trade-off is unacceptable if we want these technologies to be widely used. Here’s how Ergo addresses one common and very important issue.
We all know that the most secure way to use Bitcoin, or any crypto, is to download a copy of the blockchain and run a full node yourself. That way, every time you or anyone else makes a transaction, your client checks the blockchain to ensure it’s valid. You don’t have to trust anyone else.
A full Bitcoin node checks all the blocks in the blockchain (using headers) and makes sure there are no fraudulent transactions. It’s a very secure way of using crypto – but there’s a problem. It requires significant bandwidth, storage and processing power. That kind of commodity hardware is expensive, and using a full node to validate and make transactions is in any case unsuitable for mobile devices. This is particularly true for Bitcoin, where the blockchain is over 270 GB and counting.
SPV
Simplified Payment Verification (SPV) is designed to address this problem, as described in the Bitcoin white paper:
Satoshi notes that this is not a perfect solution, and is vulnerable to an attacker overpowering the network and fooling SPV users.
Moreover, while SPV mode is intended for resource-limited devices, even this ‘lite’ approach is not always feasible. Ethereum’s headers alone total around 5 GB to download. Thus Ethereum mobile clients do not validate chain validity and so blindly have to trust third parties.
There are proposals to reduce the requirements for SPV mode by checking just a few random headers, instead of all of them. But it’s hard to do that securely.
Efficient SPV
Several years have been spent researching and developing secure protocols that allow for efficient SPV clients. The two best-known and most reliable protocols are NiPoPoWs and FlyClient.
Ergo implements NiPoPoWs, or Non-interactive Proof-of-Proof-of-Work. This technology can be explored in full on this dedicated website: https://nipopows.com:
This enables us to build a mobile SPV client that requires around just 100KB of block headers to be downloaded.
A super-efficient Ergo wallet with SPV security is in development, so stay tuned for more updates!
submitted by eleanorcwhite to CryptoCurrencies [link] [comments]

[How-To] Crafting an offline TXN with the trezorlib python API

With the rollout of the new 0.12.0 Trezor API, I thought it might be time to update some of my old offline_txn scripts. The following is about 80 lines of python that will craft and sign a VERY simple transaction on Testnet.
The new rollout also comes with some new tools. The build_tx.py that is useful in conjunction with the trezorctl sign_tx command.
Both of the methods below will produce a signed TXN that can then be imported into Electrum using the "Tools -> Load transaction -> From text" command.
Note: u/Crypto-Guide has a good walkthrough for installing trezorlib in Windows if you haven't already done that.

Example of using trezorctl btc sign-tx

This example uses the build_tx.py script to build JSON to feed to the sign-tx command. You will need to download the build_tx.py file from github. It is not automatically installed with the trezor package.
```

python build_tx.py | trezorctl btc sign-tx -

Coin name [Bitcoin]: Testnet Blockbook server [btc1.trezor.io]: tbtc1.trezor.io
Previous output to spend (txid:vout) []: e294c4c172c3d87991...060fad1ed31d12ff00:0 BIP-32 path to derive the key: m/84'/1'/0'/0/0 Input amount: 129999866 Sequence Number to use (RBF opt-in enabled by default) [4294967293]: Input type (address, segwit, p2shsegwit) [segwit]:
Previous output to spend (txid:vout) []:
Output address (for non-change output) []: 2MsiAgG5LVDmnmJUPnYaCeQnARWGbGSVnr3 Amount to spend (satoshis): 129999706
Output address (for non-change output) []: BIP-32 path (for change output) []: Transaction version [2]: Transaction locktime [0]: Please confirm action on your Trezor device.
Signed Transaction: 0200000000010100ff121dd31ead0f06...f279b642d85c48798685f86200000000 ```

Example of using crafting a TXN using trezorlib directly

If your good with python, or want to see how everything works under the hood, here's 80 lines of python to generate a similar signed transaction.
```python

!/usbin/env python3

[repo] https://github.com/brianddk/reddit ... python/offline_txn.py

[req] pip3 install trezor

from trezorlib import btc, messages as proto, tools, ui from trezorlib import MINIMUM_FIRMWARE_VERSION as min_version from trezorlib.client import TrezorClient from trezorlib.transport import get_transport from trezorlib.btc import from_json from json import loads from decimal import Decimal from sys import exit

Tested with SLIP-0014 allallall seed (slip-0014.md)

User Provided Fields; These are pulled from test scripts

CHANGE THESE!!!

coin = "Testnet"

Get legacy UTXO prev_txn hex from blockbook server. For example:

https://tbtc1.trezor.io/api/tx-specific/ \

e294c4c172c3d87991b0369e45d6af8584be92914d01e3060fad1ed31d12ff00

in1_prev_txn_s = '{"txid":' \ '"e294c4c172c3d87991b0369e45d6af8584be92914d01e3060fad1ed31d12ff00"}'
in1_prev_index = 0 in1_addr_path = "m/84'/1'/0'/0/0" # allallall seed in1_amount = 129999867 out1_address = "2MsiAgG5LVDmnmJUPnYaCeQnARWGbGSVnr3" out1_amount = in1_amount - 192

Defaults

tx_version = 2 tx_locktime = 0 sequence = 4294967293

Code

in1_prev_txn_j = loads(in1_prev_txn_s, parse_float=Decimal) in1_prev_hash = in1_prev_txn_j['txid'] in1_prev_hash_b = bytes.fromhex(in1_prev_hash) device = get_transport() client = TrezorClient(transport=device, ui=ui.ClickUI())
fw_version = (client.features.major_version, client.features.minor_version, client.features.patch_version) if fw_version < min_version[client.features.model]: print("Please flash to the latest FW") exit(1)
signtx = proto.SignTx( version = tx_version, lock_time = tx_locktime )
ins = [proto.TxInputType( address_n=tools.parse_path(in1_addr_path), prev_hash=in1_prev_hash_b, prev_index=in1_prev_index, amount=in1_amount, script_type=proto.InputScriptType.SPENDWITNESS, sequence=sequence )] outs = [proto.TxOutputType( address=out1_address, amount=out1_amount, script_type=proto.OutputScriptType.PAYTOADDRESS )]
txes = None for i in ins: if i.script_type == proto.InputScriptType.SPENDADDRESS: tx = from_json(in1_prev_txn_j) txes = {in1_prev_hash_b: tx} break
_, serialized_tx = btc.sign_tx(client, coin, ins, outs, details=signtx, prev_txes=txes) client.close() print(f'{{"hex": "{serialized_tx.hex()}"}}') ```
From here, you simple take the resultant TXN hex and import it into Electrum using the "Tools -> Load transaction -> From text" clickpath
submitted by brianddk to Bitcoin [link] [comments]

Building Ergo: SPV security

There’s often a tension in the crypto world between security and convenience. That trade-off is unacceptable if we want these technologies to be widely used. Here’s how Ergo addresses one common and very important issue.
We all know that the most secure way to use Bitcoin, or any crypto, is to download a copy of the blockchain and run a full node yourself. That way, every time you or anyone else makes a transaction, your client checks the blockchain to ensure it’s valid. You don’t have to trust anyone else.
A full Bitcoin node checks all the blocks in the blockchain (using headers) and makes sure there are no fraudulent transactions. It’s a very secure way of using crypto – but there’s a problem. It requires significant bandwidth, storage and processing power. That kind of commodity hardware is expensive, and using a full node to validate and make transactions is in any case unsuitable for mobile devices. This is particularly true for Bitcoin, where the blockchain is over 270 GB and counting.

SPV

Simplified Payment Verification (SPV) is designed to address this problem, as described in the Bitcoin white paper:
Satoshi notes that this is not a perfect solution, and is vulnerable to an attacker overpowering the network and fooling SPV users.
Moreover, while SPV mode is intended for resource-limited devices, even this ‘lite’ approach is not always feasible. Ethereum’s headers alone total around 5 GB to download. Thus Ethereum mobile clients do not validate chain validity and so blindly have to trust third parties.
There are proposals to reduce the requirements for SPV mode by checking just a few random headers, instead of all of them. But it’s hard to do that securely.

Efficient SPV

Several years have been spent researching and developing secure protocols that allow for efficient SPV clients. The two best-known and most reliable protocols are NiPoPoWs and FlyClient.
Ergo implements NiPoPoWs, or Non-interactive Proof-of-Proof-of-Work. This technology can be explored in full on this dedicated website: https://nipopows.com:
This enables us to build a mobile SPV client that requires around just 100KB of block headers to be downloaded.
A super-efficient Ergo wallet with SPV security is in development, so stay tuned for more updates!
submitted by Guilty_Pea to CryptoCurrencies [link] [comments]

Building Ergo: SPV security

There’s often a tension in the crypto world between security and convenience. That trade-off is unacceptable if we want these technologies to be widely used. Here’s how Ergo addresses one common and very important issue.
We all know that the most secure way to use Bitcoin, or any crypto, is to download a copy of the blockchain and run a full node yourself. That way, every time you or anyone else makes a transaction, your client checks the blockchain to ensure it’s valid. You don’t have to trust anyone else.
A full Bitcoin node checks all the blocks in the blockchain (using headers) and makes sure there are no fraudulent transactions. It’s a very secure way of using crypto – but there’s a problem. It requires significant bandwidth, storage and processing power. That kind of commodity hardware is expensive, and using a full node to validate and make transactions is in any case unsuitable for mobile devices. This is particularly true for Bitcoin, where the blockchain is over 270 GB and counting.
SPV
Simplified Payment Verification (SPV) is designed to address this problem, as described in the Bitcoin white paper:
Satoshi notes that this is not a perfect solution, and is vulnerable to an attacker overpowering the network and fooling SPV users.
Moreover, while SPV mode is intended for resource-limited devices, even this ‘lite’ approach is not always feasible. Ethereum’s headers alone total around 5 GB to download. Thus Ethereum mobile clients do not validate chain validity and so blindly have to trust third parties.
There are proposals to reduce the requirements for SPV mode by checking just a few random headers, instead of all of them. But it’s hard to do that securely.
Efficient SPV
Several years have been spent researching and developing secure protocols that allow for efficient SPV clients. The two best-known and most reliable protocols are NiPoPoWs and FlyClient.
Ergo implements NiPoPoWs, or Non-interactive Proof-of-Proof-of-Work. This technology can be explored in full on this dedicated website: https://nipopows.com:
This enables us to build a mobile SPV client that requires around just 100KB of block headers to be downloaded.
A super-efficient Ergo wallet with SPV security is in development, so stay tuned for more updates!
submitted by Guilty_Pea to CryptoMarkets [link] [comments]

[How-To] Crafting an offline TXN with the trezorlib python API

With the rollout of the new 0.12.0 API, I thought it might be time to update some of my old offline_txn scripts. The following is about 80 lines of python that will craft and sign a VERY simple transaction on Testnet.
The new rollout also comes with some new tools. The build_tx.py that is useful in conjunction with the trezorctl sign_tx command.
Both of the methods below will produce a signed TXN that can then be imported into Electrum using the "Tools -> Load transaction -> From text" command.
Note: u/Crypto-Guide has a good walkthrough for installing trezorlib in Windows if you haven't already done that.

Example of using trezorctl btc sign-tx

This example uses the build_tx.py script to build JSON to feed to the sign-tx command. You will need to download the build_tx.py file from github. It is not automatically installed with the trezor package.
```

python build_tx.py | trezorctl btc sign-tx -

Coin name [Bitcoin]: Testnet Blockbook server [btc1.trezor.io]: tbtc1.trezor.io
Previous output to spend (txid:vout) []: e294c4c172c3d87991...060fad1ed31d12ff00:0 BIP-32 path to derive the key: m/84'/1'/0'/0/0 Input amount: 129999866 Sequence Number to use (RBF opt-in enabled by default) [4294967293]: Input type (address, segwit, p2shsegwit) [segwit]:
Previous output to spend (txid:vout) []:
Output address (for non-change output) []: 2MsiAgG5LVDmnmJUPnYaCeQnARWGbGSVnr3 Amount to spend (satoshis): 129999706
Output address (for non-change output) []: BIP-32 path (for change output) []: Transaction version [2]: Transaction locktime [0]: Please confirm action on your Trezor device.
Signed Transaction: 0200000000010100ff121dd31ead0f06...f279b642d85c48798685f86200000000 ```

Example of using crafting a TXN using trezorlib directly

If your good with python, or want to see how everything works under the hood, here's 80 lines of python to generate a similar signed transaction.
```python

!/usbin/env python3

[repo] https://github.com/brianddk/reddit ... python/offline_txn.py

[req] pip3 install trezor

from trezorlib import btc, messages as proto, tools, ui from trezorlib import MINIMUM_FIRMWARE_VERSION as min_version from trezorlib.client import TrezorClient from trezorlib.transport import get_transport from trezorlib.btc import from_json from json import loads from decimal import Decimal from sys import exit

Tested with SLIP-0014 allallall seed (slip-0014.md)

User Provided Fields; These are pulled from test scripts

CHANGE THESE!!!

coin = "Testnet"

Get legacy UTXO prev_txn hex from blockbook server. For example:

https://tbtc1.trezor.io/api/tx-specific/ \

e294c4c172c3d87991b0369e45d6af8584be92914d01e3060fad1ed31d12ff00

in1_prev_txn_s = '{"txid":' \ '"e294c4c172c3d87991b0369e45d6af8584be92914d01e3060fad1ed31d12ff00"}'
in1_prev_index = 0 in1_addr_path = "m/84'/1'/0'/0/0" # allallall seed in1_amount = 129999867 out1_address = "2MsiAgG5LVDmnmJUPnYaCeQnARWGbGSVnr3" out1_amount = in1_amount - 192

Defaults

tx_version = 2 tx_locktime = 0 sequence = 4294967293

Code

in1_prev_txn_j = loads(in1_prev_txn_s, parse_float=Decimal) in1_prev_hash = in1_prev_txn_j['txid'] in1_prev_hash_b = bytes.fromhex(in1_prev_hash) device = get_transport() client = TrezorClient(transport=device, ui=ui.ClickUI())
fw_version = (client.features.major_version, client.features.minor_version, client.features.patch_version) if fw_version < min_version[client.features.model]: print("Please flash to the latest FW") exit(1)
signtx = proto.SignTx( version = tx_version, lock_time = tx_locktime )
ins = [proto.TxInputType( address_n=tools.parse_path(in1_addr_path), prev_hash=in1_prev_hash_b, prev_index=in1_prev_index, amount=in1_amount, script_type=proto.InputScriptType.SPENDWITNESS, sequence=sequence )] outs = [proto.TxOutputType( address=out1_address, amount=out1_amount, script_type=proto.OutputScriptType.PAYTOADDRESS )]
txes = None for i in ins: if i.script_type == proto.InputScriptType.SPENDADDRESS: tx = from_json(in1_prev_txn_j) txes = {in1_prev_hash_b: tx} break
_, serialized_tx = btc.sign_tx(client, coin, ins, outs, details=signtx, prev_txes=txes) client.close() print(f'{{"hex": "{serialized_tx.hex()}"}}') ```
From here, you simple take the resultant TXN hex and import it into Electrum using the "Tools -> Load transaction -> From text" clickpath
submitted by brianddk to TREZOR [link] [comments]

Groestlcoin 6th Anniversary Release

Introduction

Dear Groestlers, it goes without saying that 2020 has been a difficult time for millions of people worldwide. The groestlcoin team would like to take this opportunity to wish everyone our best to everyone coping with the direct and indirect effects of COVID-19. Let it bring out the best in us all and show that collectively, we can conquer anything.
The centralised banks and our national governments are facing unprecedented times with interest rates worldwide dropping to record lows in places. Rest assured that this can only strengthen the fundamentals of all decentralised cryptocurrencies and the vision that was seeded with Satoshi's Bitcoin whitepaper over 10 years ago. Despite everything that has been thrown at us this year, the show must go on and the team will still progress and advance to continue the momentum that we have developed over the past 6 years.
In addition to this, we'd like to remind you all that this is Groestlcoin's 6th Birthday release! In terms of price there have been some crazy highs and lows over the years (with highs of around $2.60 and lows of $0.000077!), but in terms of value– Groestlcoin just keeps getting more valuable! In these uncertain times, one thing remains clear – Groestlcoin will keep going and keep innovating regardless. On with what has been worked on and completed over the past few months.

UPDATED - Groestlcoin Core 2.18.2

This is a major release of Groestlcoin Core with many protocol level improvements and code optimizations, featuring the technical equivalent of Bitcoin v0.18.2 but with Groestlcoin-specific patches. On a general level, most of what is new is a new 'Groestlcoin-wallet' tool which is now distributed alongside Groestlcoin Core's other executables.
NOTE: The 'Account' API has been removed from this version which was typically used in some tip bots. Please ensure you check the release notes from 2.17.2 for details on replacing this functionality.

How to Upgrade?

Windows
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer.
OSX
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), run the dmg and drag Groestlcoin Core to Applications.
Ubuntu
http://groestlcoin.org/forum/index.php?topic=441.0

Other Linux

http://groestlcoin.org/forum/index.php?topic=97.0

Download

Download the Windows Installer (64 bit) here
Download the Windows Installer (32 bit) here
Download the Windows binaries (64 bit) here
Download the Windows binaries (32 bit) here
Download the OSX Installer here
Download the OSX binaries here
Download the Linux binaries (64 bit) here
Download the Linux binaries (32 bit) here
Download the ARM Linux binaries (64 bit) here
Download the ARM Linux binaries (32 bit) here

Source

ALL NEW - Groestlcoin Moonshine iOS/Android Wallet

Built with React Native, Moonshine utilizes Electrum-GRS's JSON-RPC methods to interact with the Groestlcoin network.
GRS Moonshine's intended use is as a hot wallet. Meaning, your keys are only as safe as the device you install this wallet on. As with any hot wallet, please ensure that you keep only a small, responsible amount of Groestlcoin on it at any given time.

Features

Download

iOS
Android

Source

ALL NEW! – HODL GRS Android Wallet

HODL GRS connects directly to the Groestlcoin network using SPV mode and doesn't rely on servers that can be hacked or disabled.
HODL GRS utilizes AES hardware encryption, app sandboxing, and the latest security features to protect users from malware, browser security holes, and even physical theft. Private keys are stored only in the secure enclave of the user's phone, inaccessible to anyone other than the user.
Simplicity and ease-of-use is the core design principle of HODL GRS. A simple recovery phrase (which we call a Backup Recovery Key) is all that is needed to restore the user's wallet if they ever lose or replace their device. HODL GRS is deterministic, which means the user's balance and transaction history can be recovered just from the backup recovery key.

Features

Download

Main Release (Main Net)
Testnet Release

Source

ALL NEW! – GroestlcoinSeed Savior

Groestlcoin Seed Savior is a tool for recovering BIP39 seed phrases.
This tool is meant to help users with recovering a slightly incorrect Groestlcoin mnemonic phrase (AKA backup or seed). You can enter an existing BIP39 mnemonic and get derived addresses in various formats.
To find out if one of the suggested addresses is the right one, you can click on the suggested address to check the address' transaction history on a block explorer.

Features

Live Version (Not Recommended)

https://www.groestlcoin.org/recovery/

Download

https://github.com/Groestlcoin/mnemonic-recovery/archive/master.zip

Source

ALL NEW! – Vanity Search Vanity Address Generator

NOTE: NVidia GPU or any CPU only. AMD graphics cards will not work with this address generator.
VanitySearch is a command-line Segwit-capable vanity Groestlcoin address generator. Add unique flair when you tell people to send Groestlcoin. Alternatively, VanitySearch can be used to generate random addresses offline.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then VanitySearch is the right choice for you to create a more personalized address.
VanitySearch is a groestlcoin address prefix finder. If you want to generate safe private keys, use the -s option to enter your passphrase which will be used for generating a base key as for BIP38 standard (VanitySearch.exe -s "My PassPhrase" FXPref). You can also use VanitySearch.exe -ps "My PassPhrase" which will add a crypto secure seed to your passphrase.
VanitySearch may not compute a good grid size for your GPU, so try different values using -g option in order to get the best performances. If you want to use GPUs and CPUs together, you may have best performances by keeping one CPU core for handling GPU(s)/CPU exchanges (use -t option to set the number of CPU threads).

Features

Usage

https://github.com/Groestlcoin/VanitySearch#usage

Download

Source

ALL NEW! – Groestlcoin EasyVanity 2020

Groestlcoin EasyVanity 2020 is a windows app built from the ground-up and makes it easier than ever before to create your very own bespoke bech32 address(es) when whilst not connected to the internet.
If you're tired of the random, cryptic bech32 addresses generated by regular Groestlcoin clients, then Groestlcoin EasyVanity2020 is the right choice for you to create a more personalised bech32 address. This 2020 version uses the new VanitySearch to generate not only legacy addresses (F prefix) but also Bech32 addresses (grs1 prefix).

Features

Download

Source

Remastered! – Groestlcoin WPF Desktop Wallet (v2.19.0.18)

Groestlcoin WPF is an alternative full node client with optional lightweight 'thin-client' mode based on WPF. Windows Presentation Foundation (WPF) is one of Microsoft's latest approaches to a GUI framework, used with the .NET framework. Its main advantages over the original Groestlcoin client include support for exporting blockchain.dat and including a lite wallet mode.
This wallet was previously deprecated but has been brought back to life with modern standards.

Features

Remastered Improvements

Download

Source

ALL NEW! – BIP39 Key Tool

Groestlcoin BIP39 Key Tool is a GUI interface for generating Groestlcoin public and private keys. It is a standalone tool which can be used offline.

Features

Download

Windows
Linux :
 pip3 install -r requirements.txt python3 bip39\_gui.py 

Source

ALL NEW! – Electrum Personal Server

Groestlcoin Electrum Personal Server aims to make using Electrum Groestlcoin wallet more secure and more private. It makes it easy to connect your Electrum-GRS wallet to your own full node.
It is an implementation of the Electrum-grs server protocol which fulfils the specific need of using the Electrum-grs wallet backed by a full node, but without the heavyweight server backend, for a single user. It allows the user to benefit from all Groestlcoin Core's resource-saving features like pruning, blocks only and disabled txindex. All Electrum-GRS's feature-richness like hardware wallet integration, multi-signature wallets, offline signing, seed recovery phrases, coin control and so on can still be used, but connected only to the user's own full node.
Full node wallets are important in Groestlcoin because they are a big part of what makes the system be trust-less. No longer do people have to trust a financial institution like a bank or PayPal, they can run software on their own computers. If Groestlcoin is digital gold, then a full node wallet is your own personal goldsmith who checks for you that received payments are genuine.
Full node wallets are also important for privacy. Using Electrum-GRS under default configuration requires it to send (hashes of) all your Groestlcoin addresses to some server. That server can then easily spy on your transactions. Full node wallets like Groestlcoin Electrum Personal Server would download the entire blockchain and scan it for the user's own addresses, and therefore don't reveal to anyone else which Groestlcoin addresses they are interested in.
Groestlcoin Electrum Personal Server can also broadcast transactions through Tor which improves privacy by resisting traffic analysis for broadcasted transactions which can link the IP address of the user to the transaction. If enabled this would happen transparently whenever the user simply clicks "Send" on a transaction in Electrum-grs wallet.
Note: Currently Groestlcoin Electrum Personal Server can only accept one connection at a time.

Features

Download

Windows
Linux / OSX (Instructions)

Source

UPDATED – Android Wallet 7.38.1 - Main Net + Test Net

The app allows you to send and receive Groestlcoin on your device using QR codes and URI links.
When using this app, please back up your wallet and email them to yourself! This will save your wallet in a password protected file. Then your coins can be retrieved even if you lose your phone.

Changes

Download

Main Net
Main Net (FDroid)
Test Net

Source

UPDATED – Groestlcoin Sentinel 3.5.06 (Android)

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 wallet.
Groestlcoin Sentinel is a fork of Groestlcoin Samourai Wallet with all spending and transaction building code removed.

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UPDATED – P2Pool Test Net

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Download

Pre-Hosted Testnet P2Pool is available via http://testp2pool.groestlcoin.org:21330/static/

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submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

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Satoshis instantaneos BestRotator V1 - Gana Bitcoins en segundos

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