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Mining Fedoracoin

The subreddit for all things to do with mining fedoracoin.
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Bitcoin

Discussion about Bitcoin. BitcoinSV restores the original Bitcoin protocol, will keep it stable, and allow it to massively scale on-chain. BSV will maintain the vision laid out by Satoshi Nakamoto in the 2008 white paper - Bitcoin: A Peer-to-Peer Electronic Cash System.
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Bob The Magic Custodian



Summary: Everyone knows that when you give your assets to someone else, they always keep them safe. If this is true for individuals, it is certainly true for businesses.
Custodians always tell the truth and manage funds properly. They won't have any interest in taking the assets as an exchange operator would. Auditors tell the truth and can't be misled. That's because organizations that are regulated are incapable of lying and don't make mistakes.

First, some background. Here is a summary of how custodians make us more secure:

Previously, we might give Alice our crypto assets to hold. There were risks:

But "no worries", Alice has a custodian named Bob. Bob is dressed in a nice suit. He knows some politicians. And he drives a Porsche. "So you have nothing to worry about!". And look at all the benefits we get:
See - all problems are solved! All we have to worry about now is:
It's pretty simple. Before we had to trust Alice. Now we only have to trust Alice, Bob, and all the ways in which they communicate. Just think of how much more secure we are!

"On top of that", Bob assures us, "we're using a special wallet structure". Bob shows Alice a diagram. "We've broken the balance up and store it in lots of smaller wallets. That way", he assures her, "a thief can't take it all at once". And he points to a historic case where a large sum was taken "because it was stored in a single wallet... how stupid".
"Very early on, we used to have all the crypto in one wallet", he said, "and then one Christmas a hacker came and took it all. We call him the Grinch. Now we individually wrap each crypto and stick it under a binary search tree. The Grinch has never been back since."

"As well", Bob continues, "even if someone were to get in, we've got insurance. It covers all thefts and even coercion, collusion, and misplaced keys - only subject to the policy terms and conditions." And with that, he pulls out a phone-book sized contract and slams it on the desk with a thud. "Yep", he continues, "we're paying top dollar for one of the best policies in the country!"
"Can I read it?' Alice asks. "Sure," Bob says, "just as soon as our legal team is done with it. They're almost through the first chapter." He pauses, then continues. "And can you believe that sales guy Mike? He has the same year Porsche as me. I mean, what are the odds?"

"Do you use multi-sig?", Alice asks. "Absolutely!" Bob replies. "All our engineers are fully trained in multi-sig. Whenever we want to set up a new wallet, we generate 2 separate keys in an air-gapped process and store them in this proprietary system here. Look, it even requires the biometric signature from one of our team members to initiate any withdrawal." He demonstrates by pressing his thumb into the display. "We use a third-party cloud validation API to match the thumbprint and authorize each withdrawal. The keys are also backed up daily to an off-site third-party."
"Wow that's really impressive," Alice says, "but what if we need access for a withdrawal outside of office hours?" "Well that's no issue", Bob says, "just send us an email, call, or text message and we always have someone on staff to help out. Just another part of our strong commitment to all our customers!"

"What about Proof of Reserve?", Alice asks. "Of course", Bob replies, "though rather than publish any blockchain addresses or signed transaction, for privacy we just do a SHA256 refactoring of the inverse hash modulus for each UTXO nonce and combine the smart contract coefficient consensus in our hyperledger lightning node. But it's really simple to use." He pushes a button and a large green checkmark appears on a screen. "See - the algorithm ran through and reserves are proven."
"Wow", Alice says, "you really know your stuff! And that is easy to use! What about fiat balances?" "Yeah, we have an auditor too", Bob replies, "Been using him for a long time so we have quite a strong relationship going! We have special books we give him every year and he's very efficient! Checks the fiat, crypto, and everything all at once!"

"We used to have a nice offline multi-sig setup we've been using without issue for the past 5 years, but I think we'll move all our funds over to your facility," Alice says. "Awesome", Bob replies, "Thanks so much! This is perfect timing too - my Porsche got a dent on it this morning. We have the paperwork right over here." "Great!", Alice replies.
And with that, Alice gets out her pen and Bob gets the contract. "Don't worry", he says, "you can take your crypto-assets back anytime you like - just subject to our cancellation policy. Our annual management fees are also super low and we don't adjust them often".

How many holes have to exist for your funds to get stolen?
Just one.

Why are we taking a powerful offline multi-sig setup, widely used globally in hundreds of different/lacking regulatory environments with 0 breaches to date, and circumventing it by a demonstrably weak third party layer? And paying a great expense to do so?
If you go through the list of breaches in the past 2 years to highly credible organizations, you go through the list of major corporate frauds (only the ones we know about), you go through the list of all the times platforms have lost funds, you go through the list of times and ways that people have lost their crypto from identity theft, hot wallet exploits, extortion, etc... and then you go through this custodian with a fine-tooth comb and truly believe they have value to add far beyond what you could, sticking your funds in a wallet (or set of wallets) they control exclusively is the absolute worst possible way to take advantage of that security.

The best way to add security for crypto-assets is to make a stronger multi-sig. With one custodian, what you are doing is giving them your cryptocurrency and hoping they're honest, competent, and flawlessly secure. It's no different than storing it on a really secure exchange. Maybe the insurance will cover you. Didn't work for Bitpay in 2015. Didn't work for Yapizon in 2017. Insurance has never paid a claim in the entire history of cryptocurrency. But maybe you'll get lucky. Maybe your exact scenario will buck the trend and be what they're willing to cover. After the large deductible and hopefully without a long and expensive court battle.

And you want to advertise this increase in risk, the lapse of judgement, an accident waiting to happen, as though it's some kind of benefit to customers ("Free institutional-grade storage for your digital assets.")? And then some people are writing to the OSC that custodians should be mandatory for all funds on every exchange platform? That this somehow will make Canadians as a whole more secure or better protected compared with standard air-gapped multi-sig? On what planet?

Most of the problems in Canada stemmed from one thing - a lack of transparency. If Canadians had known what a joke Quadriga was - it wouldn't have grown to lose $400m from hard-working Canadians from coast to coast to coast. And Gerald Cotten would be in jail, not wherever he is now (at best, rotting peacefully). EZ-BTC and mister Dave Smilie would have been a tiny little scam to his friends, not a multi-million dollar fraud. Einstein would have got their act together or been shut down BEFORE losing millions and millions more in people's funds generously donated to criminals. MapleChange wouldn't have even been a thing. And maybe we'd know a little more about CoinTradeNewNote - like how much was lost in there. Almost all of the major losses with cryptocurrency exchanges involve deception with unbacked funds.
So it's great to see transparency reports from BitBuy and ShakePay where someone independently verified the backing. The only thing we don't have is:
It's not complicated to validate cryptocurrency assets. They need to exist, they need to be spendable, and they need to cover the total balances. There are plenty of credible people and firms across the country that have the capacity to reasonably perform this validation. Having more frequent checks by different, independent, parties who publish transparent reports is far more valuable than an annual check by a single "more credible/official" party who does the exact same basic checks and may or may not publish anything. Here's an example set of requirements that could be mandated:
There are ways to structure audits such that neither crypto assets nor customer information are ever put at risk, and both can still be properly validated and publicly verifiable. There are also ways to structure audits such that they are completely reasonable for small platforms and don't inhibit innovation in any way. By making the process as reasonable as possible, we can completely eliminate any reason/excuse that an honest platform would have for not being audited. That is arguable far more important than any incremental improvement we might get from mandating "the best of the best" accountants. Right now we have nothing mandated and tons of Canadians using offshore exchanges with no oversight whatsoever.

Transparency does not prove crypto assets are safe. CoinTradeNewNote, Flexcoin ($600k), and Canadian Bitcoins ($100k) are examples where crypto-assets were breached from platforms in Canada. All of them were online wallets and used no multi-sig as far as any records show. This is consistent with what we see globally - air-gapped multi-sig wallets have an impeccable record, while other schemes tend to suffer breach after breach. We don't actually know how much CoinTrader lost because there was no visibility. Rather than publishing details of what happened, the co-founder of CoinTrader silently moved on to found another platform - the "most trusted way to buy and sell crypto" - a site that has no information whatsoever (that I could find) on the storage practices and a FAQ advising that “[t]rading cryptocurrency is completely safe” and that having your own wallet is “entirely up to you! You can certainly keep cryptocurrency, or fiat, or both, on the app.” Doesn't sound like much was learned here, which is really sad to see.
It's not that complicated or unreasonable to set up a proper hardware wallet. Multi-sig can be learned in a single course. Something the equivalent complexity of a driver's license test could prevent all the cold storage exploits we've seen to date - even globally. Platform operators have a key advantage in detecting and preventing fraud - they know their customers far better than any custodian ever would. The best job that custodians can do is to find high integrity individuals and train them to form even better wallet signatories. Rather than mandating that all platforms expose themselves to arbitrary third party risks, regulations should center around ensuring that all signatories are background-checked, properly trained, and using proper procedures. We also need to make sure that signatories are empowered with rights and responsibilities to reject and report fraud. They need to know that they can safely challenge and delay a transaction - even if it turns out they made a mistake. We need to have an environment where mistakes are brought to the surface and dealt with. Not one where firms and people feel the need to hide what happened. In addition to a knowledge-based test, an auditor can privately interview each signatory to make sure they're not in coercive situations, and we should make sure they can freely and anonymously report any issues without threat of retaliation.
A proper multi-sig has each signature held by a separate person and is governed by policies and mutual decisions instead of a hierarchy. It includes at least one redundant signature. For best results, 3of4, 3of5, 3of6, 4of5, 4of6, 4of7, 5of6, or 5of7.

History has demonstrated over and over again the risk of hot wallets even to highly credible organizations. Nonetheless, many platforms have hot wallets for convenience. While such losses are generally compensated by platforms without issue (for example Poloniex, Bitstamp, Bitfinex, Gatecoin, Coincheck, Bithumb, Zaif, CoinBene, Binance, Bitrue, Bitpoint, Upbit, VinDAX, and now KuCoin), the public tends to focus more on cases that didn't end well. Regardless of what systems are employed, there is always some level of risk. For that reason, most members of the public would prefer to see third party insurance.
Rather than trying to convince third party profit-seekers to provide comprehensive insurance and then relying on an expensive and slow legal system to enforce against whatever legal loopholes they manage to find each and every time something goes wrong, insurance could be run through multiple exchange operators and regulators, with the shared interest of having a reputable industry, keeping costs down, and taking care of Canadians. For example, a 4 of 7 multi-sig insurance fund held between 5 independent exchange operators and 2 regulatory bodies. All Canadian exchanges could pay premiums at a set rate based on their needed coverage, with a higher price paid for hot wallet coverage (anything not an air-gapped multi-sig cold wallet). Such a model would be much cheaper to manage, offer better coverage, and be much more reliable to payout when needed. The kind of coverage you could have under this model is unheard of. You could even create something like the CDIC to protect Canadians who get their trading accounts hacked if they can sufficiently prove the loss is legitimate. In cases of fraud, gross negligence, or insolvency, the fund can be used to pay affected users directly (utilizing the last transparent balance report in the worst case), something which private insurance would never touch. While it's recommended to have official policies for coverage, a model where members vote would fully cover edge cases. (Could be similar to the Supreme Court where justices vote based on case law.)
Such a model could fully protect all Canadians across all platforms. You can have a fiat coverage governed by legal agreements, and crypto-asset coverage governed by both multi-sig and legal agreements. It could be practical, affordable, and inclusive.

Now, we are at a crossroads. We can happily give up our freedom, our innovation, and our money. We can pay hefty expenses to auditors, lawyers, and regulators year after year (and make no mistake - this cost will grow to many millions or even billions as the industry grows - and it will be borne by all Canadians on every platform because platforms are not going to eat up these costs at a loss). We can make it nearly impossible for any new platform to enter the marketplace, forcing Canadians to use the same stagnant platforms year after year. We can centralize and consolidate the entire industry into 2 or 3 big players and have everyone else fail (possibly to heavy losses of users of those platforms). And when a flawed security model doesn't work and gets breached, we can make it even more complicated with even more people in suits making big money doing the job that blockchain was supposed to do in the first place. We can build a system which is so intertwined and dependent on big government, traditional finance, and central bankers that it's future depends entirely on that of the fiat system, of fractional banking, and of government bail-outs. If we choose this path, as history has shown us over and over again, we can not go back, save for revolution. Our children and grandchildren will still be paying the consequences of what we decided today.
Or, we can find solutions that work. We can maintain an open and innovative environment while making the adjustments we need to make to fully protect Canadian investors and cryptocurrency users, giving easy and affordable access to cryptocurrency for all Canadians on the platform of their choice, and creating an environment in which entrepreneurs and problem solvers can bring those solutions forward easily. None of the above precludes innovation in any way, or adds any unreasonable cost - and these three policies would demonstrably eliminate or resolve all 109 historic cases as studied here - that's every single case researched so far going back to 2011. It includes every loss that was studied so far not just in Canada but globally as well.
Unfortunately, finding answers is the least challenging part. Far more challenging is to get platform operators and regulators to agree on anything. My last post got no response whatsoever, and while the OSC has told me they're happy for industry feedback, I believe my opinion alone is fairly meaningless. This takes the whole community working together to solve. So please let me know your thoughts. Please take the time to upvote and share this with people. Please - let's get this solved and not leave it up to other people to do.

Facts/background/sources (skip if you like):



Thoughts?
submitted by azoundria2 to QuadrigaInitiative [link] [comments]

Bitcoin Price Notifier

I have written a very simple bitcoin notifier script. Every minute (or time you chose) the script will look up the live price of bitcoin and tell you if it is up or down, by how much, and read out the price via computer voice. You can just leave it running and minimize the window.
https://www.millersecurityresearch.com/articles/Lets_Code_Bitcoin_Price_Notifier.php
Edit: A lot of people wanted it to play You Suffer from Napalm Death... so if the price drops more that 25$ it will now play.
Here you go:
Add-Type -AssemblyName System.Speech $Voice = New-Object System.Speech.Synthesis.SpeechSynthesizer $Napalm = "https://millersecurityresearch.com/files/scripts/sounds/Napalm%20Death%20-%20You%20Suffer.mp3" $Path = $Env:Temp + "\Napalm Death - You Suffer.mp3" $Webclient = New-Object System.Net.WebClient $Webclient.DownloadFile($Napalm, $Path) Add-Type -AssemblyName presentationCore $MediaPlayer = New-Object system.windows.media.mediaplayer $MediaPlayer.open($Path) $Response = Invoke-WebRequest -URI "https://api.coindesk.com/v1/bpi/currentprice.json" | ConvertFrom-Json $StartingRate = $Response.bpi.USD.rate Write-Host "Starting BTC: $StartingRate" While (0 -lt 1){ Start-Sleep -Seconds 600 $Response = Invoke-WebRequest -URI "https://api.coindesk.com/v1/bpi/currentprice.json" | ConvertFrom-Json $CurrentRate = $Response.bpi.USD.rate If($StartingRate -gt $CurrentRate){ $Difference = $StartingRate - $CurrentRate If($Difference -gt 25){ $MediaPlayer.Play() Start-Sleep -Seconds 2 } $Voiceoutput = "Bitcoin Down by " + $Difference + " Dollars to " + $CurrentRate -replace ".{5}$" $Voice.Speak($Voiceoutput) Write-Host "Current BTC: $CurrentRate - Down" } If($StartingRate -lt $CurrentRate){ $Difference = $StartingRate - $CurrentRate $Voiceoutput = "Bitcoin Up by" + $Difference + " Dollars to " + $CurrentRate -replace ".{5}$" $Voice.Speak($Voiceoutput) Write-Host "Current BTC: $CurrentRate - Up" } If($StartingRate -eq $CurrentRate){ $VoicedRate = $CurrentRate -replace ".{5}$" $Voiceoutput = "Bitcoin same at " + $VoicedRate + " Dollars" $Voice.Speak($Voiceoutput) Write-Host "Current BTC: $CurrentRate" } $StartingRate = $CurrentRate } 

submitted by coldmateplus to PowerShell [link] [comments]

Sobre Tibia, gold farmers y un caso de ayuda y éxito PT2. Son muy buenos consejos de cómo comenzar a programar profesionalmente

Una vez más, reconocimiento al autor original de los post International-Unit-8
Hello,

I have gotten so many replies and messages since my last post in this thread, that I can't answer them all individually. Previous topic:

https://www.reddit.com/TibiaMMO/comments/h8tu5u/a_great_tip_for_brazilians_venezuelans_and_othe

It has been shared on multiple subreddits so I have no idea where to even post this. But I'd like to come up with a follow-up thread with some more information. The internet is the most powerful tool that mankind has ever invented. You have the ability to reach thousands, millions and even billions of people with just a computer and some internet access.

If you're on this subreddit, chances are you're already playing Tibia and you already have a computer and internet access. It doesn't need to be the best internet, but as long as websites will load (eventually) you are good to go.

In this topic I will go more in-depth on web development and software engineering. If you have a very slow internet connection, you may want to look into web development instead of software development. An application/software is much heavier (larger file size) than a website. And most developer jobs require that you send and download files, back and forth, between you and your company's server. So if you feel like your internet is too slow to send a lot of files - do not worry! There are plenty of jobs.

First, I will go through some more details on how to learn web development and software development. After that, I will list a few other kinds of jobs that you can do remotely. These types of jobs can be done from anywhere in the world as long as you have internet access.



Part 1: Some languages you should learn

What is web development? Well, it can be a lot of things. You perhaps make websites for shops/restaurants/hair dressers/dentists, or you work for a big company and work on their web application, like Outlook, Discord or Spotify (which can all be accessed via a browser: their web app). You can also work with design and user experience, instead of programming. Being a web developer can mean so many different things, it's impossible to name them all. But most web developers are just developers: they program. They make websites, and they either sell the websites to companies (as a consultant) or you work full/part-time for a company.

I can not provide in-depth information about every single thing, but I can give you some pointers. The very basics any web developer should know is this:

HTML (HyperText Markup Language) - it's what almost all websites use as a foundation. This is not a programming language, but it is a markup language. If you want to build websites, you pretty much have to know this language. Don't worry though, it is easy. Not so much to learn. You can learn all about it in a few weeks.

CSS (Cascading Style Sheets) - it's what will add colors and shapes to your website. If you want to focus more on design (also known as front end development) then this is where you want to gain a lot of knowledge.

Python - A very simple language to learn. This language is very often the first programming language that developers start using. You can use it for a lot of things. This language is used in the back of a lot of websites. Google has been using Python for years and still is. It's great for web scraping and making web requests. If you want a language to practice your algorithms, then this language is awesome.

PHP - This used to be a very popular language, but not so much these days. However, it is very good to know how this works because it's very simple to learn and also very functional in some cases. If you want to transmit or withdraw information from a database to your website, then this (in combination with SQL) is a great way to do so. Whenever you make a login system or a contact form, the data must be sent somehow to a recipient or a database. PHP will help you do that. It is a server-side language, which means it will run in the back of the website.

SQL - To be able to communicate with databases (for example: save data, update data, or insert data) you can use different languages for that. But SQL is probably the most widely used language for this. It is basically just a bunch of commands that you tell your website or app to do. If you have a web shop for example, you will need a database to store all your product information in. You can for example use MySQL as your database and then use the SQL language to extract data from your database and publish it as a list of products on your website.

JavaScript - Perhaps the most powerful language at the moment. Anyone who is good at JavaScript will be able to learn most other modern programming languages. In recent years, the demand for good JavaScript developers has skyrocketed. It's because more applications are becoming web based, and JavaScript is probably among the most useful languages to use. You can use it for so many things. Previously JavaScript was only being run on the client side of the website (that means in the user's browser). But in recent years, there has been massive development of this language and you are now able to build servers, connect to databases and do very powerful web applications using just this language. A great tutorial for JavaScript was made by Tony Alicea: https://www.youtube.com/watch?v=Bv_5Zv5c-Ts This video is "just" 3.5 hours, but it's the intro. There is a much longer version of it, and you can download it for free if you search for it. Just find it as a torrent and watch it. It's probably the best tutorial I have seen for JavaScript.

C# - It's pronounced as "C Sharp". This language has been dominating the software engineering market for decades at this point. Everyone loves it. It's relatively easy to learn and you can build a lot of stuff in C#. It's very much like JavaScript, but focuses more on application development rather than website development. I would however try to avoid learning this language if you have very slow internet, since you will most likely be sending a ton of files back and forth. But if application (computer & phone) is your thing, then this language is great. There are so many tutorials on this, but there is 1 channel on YouTube which teaches a lot of the basics in C# (and many other languages) and that channel is called ProgrammingKnowledge. Sure, his C# videos may be old now but most of it is still relevant and useful. You will learn a lot by watching his videos. It's always good to start from the beginning and then when you're familiar with that, you can learn more about the recent updates in C#. https://www.youtube.com/watch?v=V2A8tcb_YyY&list=PLS1QulWo1RIZrmdggzEKbhnfvCMHtT-sA

Java - This is pretty much 90% identical to C# as I wrote above. Widely used, relatively easy to learn the basics and there's plenty of jobs. If you like making android apps, this language is for you.



Part 2: Technologies and useful tools

To become a web developer you will need a few tools. You need a text editor, a FTP client, a SSH client and some other things. Also a good browser.

Text editor: Visual Studio Code, Atom, Sublime Text, Brackets - There are many different text editors but at the moment, I highly recommend Visual Studio Code. It has so many built-in features it's honestly the only thing you may need.Don't forget to install Notepad++ as well - this very basic editor is so handy when you just quickly need to edit some files.

File archiving: WinRar, 7-Zip - You need some way of archiving projects and send it to your customer or employer. These are basic tools anyone should use. I personally use Winrar.

FTP (File Transfer Protocol): FileZilla - This tool will allow you to connect to your website's file manager and upload your files to it. There are many tools for connecting to an FTP server but this is the most popular one, it's simple and it works great.

VPS (Virtual Private Server): Amazon Web Services, Google Cloud - If you want to practice building web applications or want to host your own website as a fun project, it's great to use a VPS for that. Both Amazon and Google offers 365 days of free VPS usage. All you need is a credit card. However, they will not charge you, as long as you stay below the free tier limit. A VPS is basically a remote computer that you can connect to. I highly recommend that, if you have a slow internet connection. Those VPS-servers (by Amazon and Google) usually have 500mbit/s internet speed, which is faster than most countries in the world. You simply connect to them via Remote Desktop, or by SSH. Depending on what type of server you are using (Windows or Linux).

SSH (Secure Shell): Solar-PuTTY, PuTTY - If you for example have a web server where you store applications and files, a great way to connect to it is by using SSH. PuTTY is pretty much the standard when it comes to SSH clients. But I really love the version created by SolarWinds. When you download that one, do not enter your personal details. Their sales people will call you and haunt you! Haha.

File Searching: Agent Ransack - When you have many files and try to locate a specific document or file, you may want to use something like Agent Ransack. Much faster than the traditional search feature in Windows and it is much more accurate.

IDE / Code Editor: Visual Studio - Great tool to use when you want to create applications in C# for example. Do not confuse this with Visual Studio Code. These are two very different tools. This tool (Visual Studio) is more designed for Windows applications. Not just websites. I only recommend getting it if you plan to make programs for Windows.

Web host & domain: NameCheap, Epik, SiteGround - If you develop websites on your own, or maybe want to create a portfolio website, you will need a domain name and web hosting. I have personally used all of these 3 and they are very cheap. NameCheap has some of the cheapest domains and great web hosting for a low price. Their support is also great. Same with SiteGround. And if you want to buy a domain anonymously (with Bitcoin for example), then you can use Epik. Low prices and great customer service on all these 3 websites.

Web Server: XAMPP, Nginx - If you plan to practice PHP, you will need to have a web server on your local computer. If you have Windows, I would highly recommend installing XAMPP (Apache). It is very easy to use for beginners. If you're on Linux, I would recommend Nginx. Also check our PhpMyAdmin if you want to quickly setup a MySQL database locally.Bonus tip: If you use Visual Studio Code to create websites in HTML, CSS and JavaScript: then install the extension "live server" and you can run your applications on a live server without setting it up yourself. Tutorial: https://www.youtube.com/watch?v=WzE0yqwbdgU

Web Browser: Mozilla Firefox, Microsoft Edge Insider, Google Chrome - You need one of the latest web browsers to create websites these days. Since I prefer privacy over functionality, I've always loved Firefox. But recently, Microsoft has been improving its new version of Edge a lot (based on Chromium) and it's also very popular. If you want all your personal details to be saved and have good tools for web development, then use Google Chrome. Don't forget to utilize the built-in developer tools. You can access it in any of these browsers by pressing F12.



Other things you may want to look into:

Web services, SSL certificates, Search Engine Optimization, Databases, API, Algorithms, Data Structures



Part 3: Learning platforms

https://www.youtube.com/

https://www.w3schools.com/

https://leetcode.com/

https://stackoverflow.com/



If you want to learn in-depth about algorithms, data structures and more. Then you can take a look at the curriculum of the top-tier universities of USA. Such as: UC Berkeley, Harvard and MIT. These courses are very hard and are specifically for people who want to become experts in software engineering. You can enroll some of them for free, like the one on Harvard. And by having a such diploma (which costs $90 extra) can get you a lot of job opportunities. You can enroll those courses if you want, but it can have a fee. But just take a look at what they are studying and try do their exercises, that is 100% free. Get the knowledge. It's mostly on video too! These course below are the very same courses that many of the engineers at Facebook, Google, Amazon, Apple, Netflix, Uber, AirBnb, Twitter, LinkedIn, Microsoft, etc. has taken. It's what majority of people in Silicon Valley studied. And it's among the best classes that you can take. These course are held by some of the world's best professors in IT.



UC Berkeley: CS 61a & CS 61b:

https://inst.eecs.berkeley.edu/~cs61a/fa19/

Video playlist here: https://www.youtube.com/watch?v=0_LryzvBxFw&list=PL6BsET-8jgYVAaK0jGVTWr9R5g7kSMQ8i

https://inst.eecs.berkeley.edu/~cs61b/fa19/

Videos: https://www.youtube.com/channel/UCNBSbBTFx8nFahcQyZOYOgQ



Harvard University: CS50 (free enrollment --- 90$ to get a certificate).

https://online-learning.harvard.edu/course/cs50-introduction-computer-science



MIT (Massachusetts Institute of Technology): 6.006

https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-006-introduction-to-algorithms-fall-2011/

Held by Erik Demaine. One of the best - if not THE best - professor at MIT. Just look at this resume. It's almost 50 pages long! https://erikdemaine.org/cv.pdf



Part 4: Finding jobs

https://www.linkedin.com/

https://marketing.hackerrank.com/

https://www.glassdoor.com/index.htm

Facebook groups for web developers, freelancing, remote work, etc.

Portfolio / Code Sharing / Source Control:

https://github.com/



Part 5: Other types of jobs you can work with (remotely) - with/without coding experience

SEO (Search Engine Optimization)

Translations (Spanish/Portuguese, etc.)

Affiliate Marketing (look into Clickbank.com - and use Facebook Ads to promote products)

Design (web design, photo design, etc.)

Copywriting (write sales letters for companies)

Database manager (monitor and administrate a company's database)

YouTube - make YouTube videos to gain views. Views = Money.

Dropshipping (use Shopify.com for example) and sell products in a webshop. Benefit with dropshipping is that you don't personally store the products.

Customer support

more...? Banking, economics, etc.



You can find information about all of the things I have mentioned by using YouTube or Google search.

Hope it helps.



And I hope that in 1 year, there will be at least some new web developers in Brazil, Venezuela and other countries in South America.
submitted by jesuskater to memezuela [link] [comments]

Bitcoin Price Notifier

I have written a very simple bitcoin notifier script. Every minute (or time you chose) the script will look up the live price of bitcoin and tell you if it is up or down, by how much, and read out the price via computer voice. You can just leave it running and minimize the window.
https://www.millersecurityresearch.com/articles/Lets_Code_Bitcoin_Price_Notifier.php
Edit: A lot of people wanted it to play You Suffer from Napalm Death... so if the price drops more that 25$ it will now play.
Here you go:
Add-Type -AssemblyName System.Speech $Voice = New-Object System.Speech.Synthesis.SpeechSynthesizer $Napalm = "https://millersecurityresearch.com/files/scripts/sounds/Napalm%20Death%20-%20You%20Suffer.mp3" $Path = $Env:Temp + "\Napalm Death - You Suffer.mp3" $Webclient = New-Object System.Net.WebClient $Webclient.DownloadFile($Napalm, $Path) Add-Type -AssemblyName presentationCore $MediaPlayer = New-Object system.windows.media.mediaplayer $MediaPlayer.open($Path) $Response = Invoke-WebRequest -URI "https://api.coindesk.com/v1/bpi/currentprice.json" | ConvertFrom-Json $StartingRate = $Response.bpi.USD.rate Write-Host "Starting BTC: $StartingRate" While (0 -lt 1){ Start-Sleep -Seconds 600 $Response = Invoke-WebRequest -URI "https://api.coindesk.com/v1/bpi/currentprice.json" | ConvertFrom-Json $CurrentRate = $Response.bpi.USD.rate If($StartingRate -gt $CurrentRate){ $Difference = $StartingRate - $CurrentRate If($Difference -gt 25){ $MediaPlayer.Play() Start-Sleep -Seconds 2 } $Voiceoutput = "Bitcoin Down by " + $Difference + " Dollars to " + $CurrentRate -replace ".{5}$" $Voice.Speak($Voiceoutput) Write-Host "Current BTC: $CurrentRate - Down" } If($StartingRate -lt $CurrentRate){ $Difference = $StartingRate - $CurrentRate $Voiceoutput = "Bitcoin Up by" + $Difference + " Dollars to " + $CurrentRate -replace ".{5}$" $Voice.Speak($Voiceoutput) Write-Host "Current BTC: $CurrentRate - Up" } If($StartingRate -eq $CurrentRate){ $VoicedRate = $CurrentRate -replace ".{5}$" $Voiceoutput = "Bitcoin same at " + $VoicedRate + " Dollars" $Voice.Speak($Voiceoutput) Write-Host "Current BTC: $CurrentRate" } $StartingRate = $CurrentRate } 

submitted by coldmateplus to Bitcoin [link] [comments]

10 Malentendidos sobre El Web Scraping

1. El web scraping es ilegal
Muchas personas tienen falsas impresiones sobre el web scraping. Es porque hay personas que no respetan el gran trabajo en Internet y usan web scraping herramienta robando el contenido. El web scraping no es ilegal en sí mismo, sin embargo, el problema surge cuando las personas lo usan sin el permiso del propietario del sitio y sin tener en cuenta los Términos de Servicio (Términos de Servicio). Según el informe, el 2% de los ingresos en línea se pueden perder debido al mal uso del contenido a través del raspado web. Aunque el raspado web no tiene una ley clara y términos para abordar su aplicación, está abarcado por las regulaciones legales. Por ejemplo:
2. El web scraping y el web crawling son lo mismo
El web scraping implica la extracción de datos específicos en una página web específica, por ejemplo, extraer datos sobre clientes potenciales de ventas, listados de bienes inmuebles y precios de productos. Por el contrario, el web crawling es lo que hacen los motores de búsqueda. Escanea e indexa todo el sitio web junto con sus enlaces internos. "Crawler" puede navegar por la web sin un objetivo específico.
3. Puedes scrape cualquier sitio web
A menudo que las personas solicitan scraping cosas como direcciones de correo electrónico, publicaciones de Facebook o información de LinkedIn. Según un artículo titulado "¿Es legal el web scraping?" Es importante tener en cuenta las reglas antes de realizar el web scraping:
Una persona puede ser procesada bajo varias leyes. Por ejemplo, uno raspó cierta información confidencial y la vendió a un tercero, ignorando la carta de prohibición enviada por el propietario del sitio. Esta persona puede ser procesada bajo la ley de Trespass a Chattel, Violación de Digital Millennium Copyright Act (DMCA), Violación de la Ley de Computer Fraud and Abuse Act (CFAA) and Misappropriation
No significa que no pueda scrape canales de redes sociales como Twitter, Facebook, Instagram y YouTube. Son amigables con los servicios de scraping que siguen las disposiciones del archivo robots.txt. Para Facebook, debe obtener su permiso por escrito antes de realizar el comportamiento de la recopilación automatizada de datos.
4. Necesitas saber cómo codificar
Una herramienta de web scraping (herramienta de extracción de datos) es muy útil para profesionales no tecnológicos como especialistas en marketing, estadísticos, consultores financieros, inversores de bitcoin, investigadores, periodistas, etc. Octoparse lanzó una característica única: web scraping templates que scrapers preformateados que cubren más de 14 categorías en más de 30 sitios web, incluidos Facebook, Twitter, Amazon, eBay, Instagram y más. Todo lo que tiene que hacer es ingresar las palabras clave/URL en el parámetro sin ninguna configuración de tarea compleja. El web scraping con Python lleva mucho tiempo. Por otro lado, una plantilla de web scraping es eficiente y conveniente para capturar los datos que necesita.
5. Puede usar datos scraped para cualquier cosa
Es perfectamente legal si extrae datos de sitios web para consumo público y los utiliza para análisis. Sin embargo, no es legal si scrape información confidencial con fines de lucro. Por ejemplo, scraping información de contacto privada sin permiso y venderla a un tercero para obtener ganancias es ilegal. Además, reempaquetar contenido raspado como propio sin citar la fuente tampoco es ético. Debe seguir de reglas sobre no enviar spam o cualquier uso fraudulento de datos está prohibido de acuerdo con la ley.
6. Un web scraper es versátil
Tal vez ha experimentado sitios web particulares que cambian su diseño o estructura de vez en cuando. No se frustre cuando se encuentre con sitios web que su scraper no puede leer por segunda vez. Hay muchas razones. No se activa necesariamente al identificarte como un bot sospechoso. También puede ser causado por diferentes ubicaciones geográficas o acceso de la máquina. En estos casos, es normal que un web scraper no pueda analizar el sitio web antes de establecer el ajuste.
7. Puedes scraping web a alta velocidad
Es posible que haya visto anuncios de scraper que dicen cuán rápidos son sus scrapers. Suena bien ya que le dicen que pueden recopilar datos en segundos. Sin embargo, si causas daños a la empresa, serás un delincuente y será procesado. Esto se debe a que una solicitud de datos escalables a una velocidad rápida sobrecargará un servidor web, lo que podría provocar un bloqueo del servidor. En este caso, la persona es responsable por el daño bajo la ley de "trespass to chattels" (Dryer y Stockton 2013). Si no está seguro de si el sitio web es scrapable o no, pregúntele al proveedor de servicios de desguace web. Octoparse es un proveedor de servicios de raspado web responsable que coloca la satisfacción de los clientes en primer lugar. Para Octoparse es crucial ayudar a nuestros clientes a resolver el problema y tener éxito.
8. API y Web scraping son lo mismo
API es como un canal para enviar su solicitud de datos a un servidor web y obtener los datos deseados. API devolverá los datos en formato JSON a través del protocolo HTTP. Por ejemplo, Facebook API, Twitter API, y Instagram API. Sin embargo, no significa que pueda obtener los datos que solicite. El web scraping puede visualizar el proceso ya que le permite interactuar con los sitios web. Octoparse tiene plantillas de web scraping. Es aún más conveniente para los profesionales no tecnológicos extraer datos al completar los parámetros con palabras clave/URL.
9. The scraped data only works for our business after being cleaned and analyzed
Many data integration platforms can help visualize and analyze the data. In comparison, it looks like data scraping doesn’t have a direct impact on business decision making. Web scraping indeed extracts raw data of the webpage that needs to be processed to gain insights like sentiment analysis. However, some raw data can be extremely valuable in the hands of gold miners.
9. Los scraped data solo funcionan para nuestro negocio después de ser limpiados y analizados
Muchas plataformas de integración de datos pueden ayudar a visualizar y analizar los datos. En comparación, parece que el scraping de datos no tiene un impacto directo en la toma de decisiones comerciales. De hecho, el web scraping extrae datos sin procesar de la página web que deben procesarse para obtener información como el análisis de sentimientos. Sin embargo, algunos datos en bruto pueden ser extremadamente valiosos en manos de los mineros de oro.
Con la plantilla de web scraping de Octoparse Google Search para buscar un resultado de búsqueda orgánica, puede extraer información, incluidos los títulos y meta descripciones sobre sus competidores para determinar sus estrategias de SEO; Para las industrias minoristas, el web scraping se puede usar para controlar los precios y la distribución de los productos. Por ejemplo, Amazon puede crawl Flipkart y Walmart en el catálogo "Electrónico" para evaluar el rendimiento de los artículos electrónicos.
10. El web scraping solo puede usarse en negocios
El web scraping se usa ampliamente en varios campos además de la generación de leads, el monitoreo de precios, el seguimiento de precios y el análisis de mercado para empresas. Los estudiantes también pueden aprovechar una plantilla de web scraping de Google Académico para realizar investigaciones de tesis. Los agentes inmobiliarios pueden realizar investigaciones de vivienda y predecir el mercado inmobiliario. Podrá encontrar personas influyentes de Youtube o Twitter para promocionar su marca o su propia agregación de noticias que cubra los únicos temas que desea al scraping los medios de comunicación y los RSS feeds.
submitted by melisaxinyue to webscraping [link] [comments]

Public CodeValley/Emergent Consensus questioning and investigation Thread. Ask your hard questions and dispel your doubts here.

What is going on here?
I am asking some hard questions for the CodeValley Company, which recently proposed a new revolutionary software development paradigm called Emergent Coding at the latest big Bitcoin Cash conference in Australia.
I am asking these questions because, as I (and ~150 people who agreed with me) noticed, there are stunning similarities between CodeValley and the companies who have tried and succeeded in crippling Peer-To-Peer Electronic Cash: nChain and Blockstream.
According to me, as it looks now, similarities between these 3 companies (nChain, Blockstream, CodeValley) are the following:
}- Sources of funding are extremely unclear or openly hostile to Bitcoin
}- At first and even second glance, there is no product, no way to make money
}- Whitepaper & Documentation is missing, hollow or total abstract bullshit, company has no logical sense of existence
}- Detailed specifications or proofs of operation are not available
}- Main products are closed-source patented blobs (BSV, Liquid, Emergent Coding)
}- They have huge influences in the industry or try to establish themselves in such position to have the infuences
I am here (and you are here, I assume) because we want to find out the truth, whatever the truth is. The point of this topic is to ask the hardest possible questions in order to estimate the probability of CodeValley company being legit.
But this is also a chance for CodeValley to clear their name by providing sufficient information that proves that (after 4 years of having working company and 10+ years of having patents [Archived]) they actually have a working product and are a legit company, and not an infiltrator designed and paid by banks/TPTB in order to cripple and destroy Bitcoin Cash. Also if they truly are what they claim and they truly have such a revolutionary technology, this is a great opportunity for promotion. To show the world that the tech actually works.
I will ask my questions and you can ask your questions as well. Don't make them easy. Don't have mercy (but these things work better when you are polite).
Let's begin the trial by fire!
Calling nlovisa
My Questions/Tasks for CodeValley:
[Of course you actually don't have to answer any of them or you can give us bullshit answers again, but in such case the community may conclude that you actually are next nChain/Blockstream and an enemy infiltrator, reject you and shoot down all your efforts. So the choice is yours]
@@@@ 1. Please upload your actual businessplan which you presented to the people in power who gave you funding(VCs? Government?) to create $50 Million BCH tech park. A businessplan which is supposed to explain spending of $50 million AUD should have at least 7 pages (but more probably 20+). Some names and unimportant details (but NOT money/financial numbers) can be redacted.
-- You have 6 hours to complete this task --
@@@@ 2. Please list your current VCs and >%5 shareholders, with CEO names and HQ locations of each of them.
-- You have 4 hours to complete this task --
@@@@ 3. Few days ago you promised to upload freely-accessible documentation to https://codevalley.com/docs subpage which would describe emergent coding in greater details.
@ - What happened to that promise?
@@@@ 4. After I accused that your company is bullshit and your product is hollow, you immediately started to praise me and offered me a trip to Australia [Archived].
@ - So, do you always praise and offer a paid trip across the world to Australia to all people on the Internet who heavily criticize you? Is this a common practice in your company?
@@@@ 5. A travel from Poland to Australia and back would cost something under $2000 AUD, counting buses, with hotels that would make something close to $2500 AUD even for few days. Based on this, I estimate your "invite random people from the internet to Australia in order to show them the product" budget has to consist of at least $50.000 AUD yearly (but $100.000 - $200.000 is more probable of course).
@ A) In your financial books, what exactly is called the Excel position of your budget expenses under which would your secretary put my trip's expenses?
@ B) How do you maintain such a large budget for such frivolous spending and how do you explain it to your shareholders/VCs?
@@@@ 6. Few days ago you answered somebody a question: "The trust model is also different. The bulk of the testing happens before the project is designed not after. Emergent Coding produces a binary with very high integrity and arguably far more testing is done in emergent coding than in incumbent methods you are used to.".
@ A) Who EXACTLY does the testing? People? Software? AI? Non-bullshit answer, please.
@ B) Why exactly is there "more testing" in Emergent Coding than in normal software creation paradigm? Why is emergent coding different? Do the developers who work in this paradigm are somehow special? Are the programming languages magical?
@ C) What are the specific software tools used for this "testing"? "Agents" is a non-answer, so don't even try.
@@@@ 7. Please provide a simple demo binary of a simple program created completely using your "Emergent Coding" and also provide all the binary sub-component files that make up the final binary.
Requirements: There has to be a minimum of 3 sub - binaries making up the final big binary for this to be valid. 2 or less does not count. None of the binaries can be obfuscated, they have to be clean X86/X86_64 machine code binaries.
Notes: It should be incredibily simple, quick and easy task for you, since designing such a complex and apparently breakthough system must have required thousands, tens of thousands if not hundereds of thousands tests. All of these tests produced working binaries - after all you wouldn't claim you have a working marvellous revolutionary product without extensive testing, right?
-- You have 18 hours for this task --
Of course, If you are saying the truth and have truly developed this revolutionary "emergent coding" binary-on-the-fly-merging technology, this should normally take you under 18 minutes to just find the test samples and upload them.
@@@@ 8. Please construct a simple (binary or source) single-use-compiler demo that will combine 3 or more sub-binaries into final working product. Please upload the sub-binaries and the "single-use compiler" to publicly available site so people in our community can verify that your product is actually working.
The single-use-compiler binary can be obfuscated with proper tool in order to hide your precious intellectual property. The 3 sample sub-binaries cannot be obfuscated. They have to be pure, clean, binary X86/X86_64 machine code. Everything has to be working and verifable of course.
-- You have 72 hours to complete this task --
I understand all your technologies are patented with patents that basically predate Bitcoin and you are giving us obfuscated binaries, so you don't have to worry about anybody stealing your company's intellectual property, right?
@@@@ 9. You mentioned the only application I need to create programs using Emergent Coding is the pilot app.
@ - What programming language(s) is the pilot app written in?
@@@@ 10. When you developed the Emerging Coding, before it started existing, you couldn't have used emergent coding to create the first (test & development) applications because it is a chicken and egg problem.
@ - What programming language did you use to create first client/serveapi/daemon/tool used to merge multiple binaries into one in Emergent Coding?
@@@@ 11. Please list all of your current programmers and programming language each of them is using next to their name. Also provide LinkedIn profiles if applicable.
-- You have 18 hours to complete this task --
@@@@ 12. Please also list all Development Environments (IDEs) used by your current programmers next to their name.
-- You have 18 hours to complete this task --
@@@@ 13. Please list all compilers used by your current programmers next to their name.
-- You have 18 hours to complete this task --
@@@@ 14. So if I understand correctly CodeValley will be the company who runs $50 million BCH tech park and the tech will house multiple Bitcoin Cash-related startup and companies. Let's say I have a BCH startup and I would like to rent a loft/spot in your "tech park".
A) Please provide a PDF of sample basic contract you have (hopefully) prepared for such startups.
-- You have 4 hours to complete this task --
B) How much does the rent cost per a room (or m2/sqft) for a month and for a year?
@@@@ 15. Please submit the list of compilers that produce X86/X86_64/ARM binaries compatibile with Emergent Coding "mash-it-together" "binary compiler".
-- You have 4 hours to complete this task --
@@@@ 16. Is it possible for Emergent Coding to merge multiple non-binary applications (like Python or PHP programs) together? Or is it just binaries?
Who are you?
I am a freedom thinker and individual independent from all infuences who just does what he finds appropriate at the moment. Disclaimer to preempt questions:
}- I do not work for anybody
}- I do not have any hidden agenda
}- I am only doing what I think is right
}- I am a born revolutionist, this is why I am in Bitcoin
Why are you doing this?
}- Because I believe in truth above all. Truth will save us.
}- Because I believe in Satoshi's peer-to-peer cash for the world vision and I will not stray from this path.
}- Because most people are apparently missing psychological immune system which is why attempts like Blockstream, nChain appear and are repetedly [at least partially] successful. I have an anti-bullshit immune system that works great against this type of attacks. I was actually one of the first to be banned in /Bitcoin sub for pointing out their lies with manipulations and to spot Craig Wright's attempt to infiltrate and bend /btc sub to his will..
}- Because I was fooled twice by entities similar to CodeValley before (namingly nChain and Blockstream) and I will not be fooled again. Bitcoin Cash will not be co-opted easily as long as I am here.
}- Because if Bitcoin Cash community is an organism, then I became a B lymphocyte cell. I produce antibodies. I show you how to defend yourself from bullshit, lies and manipulation. This is my basic function.
}- Because I am here to kill the bank
submitted by ShadowOfHarbringer to btc [link] [comments]

Monero PHP help

I had 2 quick ques. I'm trying to use the monero PHP library to decrypt a transaction pulled from a block explorer so that I can avoid sending my private view key to 3rd parties.
use MoneroIntegrations\MoneroPhp\Cryptonote;
use MoneroIntegrations\MoneroPhp\ed25519;
require_once('Cryptonote.php');
require_once('ed25519.php');
require_once('SHA3.php');
require_once('base58.php');
require_once('Varint.php');

$cn = new Cryptonote();
$tx = json_decode(file_get_contents('https://moneroblocks.info/api/get_transaction_data/insert txid here'), true);
$extra = implode(array_map(function($x){ return str_pad(dechex($x), 2, '0', STR_PAD_LEFT); }, $tx['transaction_data']['extra']));

$derived = $cn->gen_key_derivation($cn->txpub_from_extra($extra), 'insert private view key here');

if( $cn->derive_public_key($derived, 'transaction ioutput index', 'insert public spend key here') == $tx['transaction_data']['vout'][0]['target']['key']){
`$sec1 = $cn->derivation_to_scalar($derived, 'transaction ioutput index');` `$sec2 = $cn->hash_to_scalar($sec1);` `$ec = new ed25519();` `echo bcsub($ec->decodeint(hex2bin($tx['transaction_data']['rct_signatures']['ecdhInfo'][0]['mask'])), $ec->decodeint(hex2bin($sec1)));` `echo bcsub($ec->decodeint(hex2bin($tx['transaction_data']['rct_signatures']['ecdhInfo'][0]['amount'])), $ec->decodeint(hex2bin($sec2)));` 
}

1- How are subaddresses handled? From this code so far my best guess is just looping through the public spend keys of all subaddresses but I assume that isn't correct.
2- How do I decode amounts? It seems like there's a few variations of it, I'd want to support both the 64 character long mask/amount as well as the 16 character long amount; most examples I've seen seem to be incomplete or missing portions of the code.
3- Is there a good way to sanity check the received transactions? (so we limit the 3rd party API to only possibly omitting transactions, but make sure they aren't able to send fake transactions). I'm assuming trying to validate the signatures will be impractical without just using the official client, but not sure if something simpler like Bitcoin's merkle hash validation exists.
Thanks
submitted by EnvironmentalSpeech3 to Monero [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.

Changes

Download

Source

UPDATED – P2Pool Test Net

Changes

Download

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

Source

submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

/r/Bitcoin FAQ - Newcomers please read

Welcome to the /Bitcoin Sticky FAQ

You've probably been hearing a lot about Bitcoin recently and are wondering what's the big deal? Most of your questions should be answered by the resources below but if you have additional questions feel free to ask them in the comments.
The following videos are a good starting point for understanding how bitcoin works and a little about its long term potential:
For some more great introductory videos check out Andreas Antonopoulos's YouTube playlists, he is probably the best bitcoin educator out there today. Also have to give mention to James D'Angelo's Bitcoin 101 Blackboard series. Lots of additional video resources can be found at the videos wiki page or /BitcoinTV.
Key properties of bitcoin
Some excellent writing on Bitcoin's value proposition and future can be found here. Bitcoin statistics can be found here, here and here. Developer resources can be found here and here. Peer-reviewed research papers can be found here. The number of times Bitcoin was declared dead by the media can be found here. Scaling resources here, and of course the whitepaper that started it all.

Where can I buy bitcoins?

BuyBitcoinWorldwide.com and Howtobuybitcoin.io are helpful sites for beginners. You can buy or sell any amount of bitcoin and there are several easy methods to purchase bitcoin with cash, credit card or bank transfer. Some of the more popular resources are below, also, check out the bitcoinity exchange resources for a larger list of options for purchases.
Bank Transfer Credit / Debit card Cash
Coinbase Coinbase LocalBitcoins
Gemini Bitstamp LibertyX
GDAX Bitit Mycelium LocalTrader
Bitstamp Cex.io BitQuick
Kraken CoinMama WallofCoins
Xapo BitcoinOTC
Cex.io
itBit
Bitit
Bitsquare
Here is a listing of local ATMs. If you would like your paycheck automatically converted to bitcoin use Cashila or Bitwage.
Note: Bitcoins are valued at whatever market price people are willing to pay for them in balancing act of supply vs demand. Unlike traditional markets, bitcoin markets operate 24 hours per day, 365 days per year. Preev is a useful site that that shows how much various denominations of bitcoin are worth in different currencies. Alternatively you can just Google "1 bitcoin in (your local currency)".

Securing your bitcoins

With bitcoin you can "Be your own bank" and personally secure your bitcoins OR you can use third party companies aka "Bitcoin banks" which will hold the bitcoins for you.
Android iOs Desktop
Mycelium BreadWallet Electrum
CoPay AirBitz Armory
Another interesting use case for physical storage/transfer is the Opendime. Opendime is a small USB stick that allows you to spend Bitcoin by physically passing it along so it's anonymous and tangible like cash.
Note: For increased security, use Two Factor Authentication (2FA) everywhere it is offered, including email!
2FA requires a second confirmation code to access your account, usually from a text message or app, making it much harder for thieves to gain access. Google Authenticator and Authy are the two most popular 2FA services, download links are below. Make sure you create backups of your 2FA codes.
Google Auth Authy
Android Android
iOS iOS

Where can I spend bitcoins?

A more comprehensive list can be found at the Trade FAQ but some more commons ones are below.
Store Product
Gyft Gift cards for hundreds of retailers including Amazon, Target, Walmart, Starbucks, Whole Foods, CVS, Lowes, Home Depot, iTunes, Best Buy, Sears, Kohls, eBay, GameStop, etc.
Steam, HumbleBundle, Games Planet, itch.io, g2g and kinguin For when you need to get your game on
Microsoft Xbox games, phone apps and software
Spendabit, The Bitcoin Shop, Overstock, DuoSearch, The Bitcoin Directory and BazaarBay Retail shopping with millions of results
ShakePay Generate one time use Visa cards in seconds
NewEgg and Dell For all your electronics needs
Cashila, Bitwa.la, Coinbills, Piixpay, Bitbill.eu, Bylls, Coins.ph, Bitrefill, Pey.de, LivingRoomofSatoshi, Hyphen.to, Coinsfer, GetPaidinBitcoin, Coins.co.th, More #1, #2 Bill payment
Foodler, Menufy, Takeaway, Thuisbezorgd NL, Pizza For Coins Takeout delivered to your door!
Expedia, Cheapair, Lot, Destinia, BTCTrip, Abitsky, SkyTours, Fluege the Travel category on Gyft and 9flats For when you need to get away
BoltVM, BitHost VPS service
Cryptostorm, Mullvad, and PIA VPN services
Namecheap, Porkbun For new domain name registration
Stampnik and GetUSPS Discounted USPS Priority, Express, First-Class mail postage
Reddit Gold Premium membership which can be gifted to others
Coinmap, 99Bitcoins and AirBitz are helpful to find local businesses accepting bitcoins. A good resource for UK residents is at wheretospendbitcoins.co.uk.
There are also lots of charities which accept bitcoin donations, such as Wikipedia, Red Cross, Amnesty International, United Way, ACLU and the EFF. You can find a longer list here.

Merchant Resources

There are several benefits to accepting bitcoin as a payment option if you are a merchant;
If you are interested in accepting bitcoin as a payment method, there are several options available;

Can I mine bitcoin?

Mining bitcoins can be a fun learning experience, but be aware that you will most likely operate at a loss. Newcomers are often advised to stay away from mining unless they are only interested in it as a hobby similar to folding at home. If you want to learn more about mining you can read more here. Still have mining questions? The crew at /BitcoinMining would be happy to help you out.
If you want to contribute to the bitcoin network by hosting the blockchain and propagating transactions you can run a full node using this setup guide. Bitseed is an easy option for getting set up. You can view the global node distribution here.

Earning bitcoins

Just like any other form of money, you can also earn bitcoins by being paid to do a job.
Site Description
WorkingForBitcoins, Bitwage, XBTfreelancer, Cryptogrind, Bitlancerr, Coinality, Bitgigs, /Jobs4Bitcoins, Rein Project Freelancing
OpenBazaar, Purse.io, Bitify, /Bitmarket, 21 Market Marketplaces
Watchmybit, Streamium.io, OTika.tv, XOtika.tv NSFW, /GirlsGoneBitcoin NSFW Video Streaming
Bitasker, BitforTip, WillPayCoin Tasks
Supload.com, SatoshiBox, JoyStream, File Army File/Image Sharing
CoinAd, A-ads, Coinzilla.io Advertising
You can also earn bitcoins by participating as a market maker on JoinMarket by allowing users to perform CoinJoin transactions with your bitcoins for a small fee (requires you to already have some bitcoins)

Bitcoin Projects

The following is a short list of ongoing projects that might be worth taking a look at if you are interested in current development in the bitcoin space.
Project Description
Lightning Network, Amiko Pay, and Strawpay Payment channels for network scaling
Blockstream and Drivechain Sidechains
21, Inc. Open source library for the machine payable web
ShapeShift.io Trade between bitcoins and altcoins easily
Open Transactions, Counterparty, Omni, Open Assets, Symbiont and Chain Financial asset platforms
Hivemind and Augur Prediction markets
Mirror Smart contracts
Mediachain Decentralized media library
Tierion and Factom Records & Titles on the blockchain
BitMarkets, DropZone, Beaver and Open Bazaar Decentralized markets
Samourai and Dark Wallet - abandoned Privacy-enhancing wallets
JoinMarket CoinJoin implementation (Increase privacy and/or Earn interest on bitcoin holdings)
Coinffeine and Bitsquare Decentralized bitcoin exchanges
Keybase and Bitrated Identity & Reputation management
Bitmesh and Telehash Mesh networking
JoyStream BitTorrent client with paid seeding
MORPHiS Decentralized, encrypted internet
Storj and Sia Decentralized file storage
Streamium and Faradam Pay in real time for on-demand services
Abra Global P2P money transmitter network
bitSIM PIN secure hardware token between SIM & Phone
Identifi Decentralized address book w/ ratings system
Coinometrics Institutional-level Bitcoin Data & Research
Blocktrail and BitGo Multisig bitcoin API
Bitcore Open source Bitcoin javascript library
Insight Open source blockchain API
Leet Kill your friends and take their money ;)

Bitcoin Units

One Bitcoin is quite large (hundreds of £/$/€) so people often deal in smaller units. The most common subunits are listed below:
Unit Symbol Value Info
millibitcoin mBTC 1,000 per bitcoin SI unit for milli i.e. millilitre (mL) or millimetre (mm)
microbitcoin μBTC 1,000,000 per bitcoin SI unit for micro i.e microlitre (μL) or micrometre (μm)
bit bit 1,000,000 per bitcoin Colloquial "slang" term for microbitcoin
satoshi sat 100,000,000 per bitcoin Smallest unit in bitcoin, named after the inventor
For example, assuming an arbitrary exchange rate of $500 for one Bitcoin, a $10 meal would equal:
For more information check out the Bitcoin units wiki.
Still have questions? Feel free to ask in the comments below or stick around for our weekly Mentor Monday thread. If you decide to post a question in /Bitcoin, please use the search bar to see if it has been answered before, and remember to follow the community rules outlined on the sidebar to receive a better response. The mods are busy helping manage our community so please do not message them unless you notice problems with the functionality of the subreddit. A complete list of bitcoin related subreddits can be found here
Note: This is a community created FAQ. If you notice anything missing from the FAQ or that requires clarification you can edit it here and it will be included in the next revision pending approval.
Welcome to the Bitcoin community and the new decentralized economy!
submitted by BinaryResult to Bitcoin [link] [comments]

/r/Bitcoin FAQ - Newcomers please read

Welcome to the /Bitcoin Sticky FAQ

You've probably been hearing a lot about Bitcoin recently and are wondering what's the big deal? Most of your questions should be answered by the resources below but if you have additional questions feel free to ask them in the comments.
Some great introductions for new users are My first bitcoin, Bitcoin explained and ELI5 Bitcoin. Also, the following videos are a good starting point for understanding how bitcoin works and a little about its long term potential:
Also have to give mention to Lopp.net, the Princeton crypto series and James D'Angelo's Bitcoin 101 Blackboard series. Some excellent writing on Bitcoin's value proposition and future can be found at the Satoshi Nakamoto Institute. Bitcoin statistics can be found here, here and here. Developer resources can be found here, here and here. Peer-reviewed research papers can be found here. Potential upcoming protocol improvements here. Scaling resources here. The number of times Bitcoin was declared dead by the media can be found here (LOL!), and of course Satoshi Nakamoto's whitepaper that started it all! :)
Key properties of bitcoin

Where can I buy bitcoins?

Bitcoin.org, BuyBitcoinWorldwide.com and Howtobuybitcoin.io are helpful sites for beginners. You can buy or sell any amount of bitcoin and there are several easy methods to purchase bitcoin with cash, credit card or bank transfer. Some of the more popular resources are below, also, check out the bitcoinity exchange resources for a larger list of options for purchases.
Bank Transfer Credit / Debit card Cash
Gemini Bitstamp LocalBitcoins
Bitstamp Bitit Mycelium LocalTrader
BitFinex Cex.io LibertyX
Cex.io CoinMama WallofCoins
Xapo Spectrocoin BitcoinOTC
Kraken Luno BitQuick
itBit
HitBTC
Bitit
Bisq (decentralized)
Luno
Spectrocoin
Here is a listing of local ATMs. If you would like your paycheck automatically converted to bitcoin use Bitwage.
Note: Bitcoins are valued at whatever market price people are willing to pay for them in balancing act of supply vs demand. Unlike traditional markets, bitcoin markets operate 24 hours per day, 365 days per year. Preev is a useful site that that shows how much various denominations of bitcoin are worth in different currencies. Alternatively you can just Google "1 bitcoin in (your local currency)".

Securing your bitcoins

With bitcoin you can "Be your own bank" and personally secure your bitcoins OR you can use third party companies aka "Bitcoin banks" which will hold the bitcoins for you.
Android iOs Desktop
Samouari BreadWallet Electrum
Another interesting use case for physical storage/transfer is the Opendime. Opendime is a small USB stick that allows you to spend Bitcoin by physically passing it along so it's anonymous and tangible like cash.
Note: For increased security, use Two Factor Authentication (2FA) everywhere it is offered, including email!
2FA requires a second confirmation code to access your account, usually from a text message or app, making it much harder for thieves to gain access. Google Authenticator and Authy are the two most popular 2FA services, download links are below. Make sure you create backups of your 2FA codes.
Google Auth Authy
Android Android
iOS iOS

Where can I spend bitcoins?

Check out spendabit or bitcoin directory for some good options, some of the more commons ones are listed below.
Store Product
Gyft Gift cards for hundreds of retailers including Amazon, Target, Walmart, Starbucks, Whole Foods, CVS, Lowes, Home Depot, iTunes, Best Buy, Sears, Kohls, eBay, GameStop, etc.
Steam, HumbleBundle, Games Planet, itch.io, g2g and kinguin For when you need to get your game on
Microsoft Xbox games, phone apps and software
Spendabit, Overstock, The Bitcoin Directory and BazaarBay Retail shopping with millions of results
ShakePay Generate one time use Visa cards in seconds
NewEgg and Dell For all your electronics needs
Bitwa.la, Coinbills, Piixpay, Bitbill.eu, Bylls, Coins.ph, Bitrefill, LivingRoomofSatoshi, Hyphen.to, Coinsfer, More #1, #2 Bill payment
Menufy, Takeaway, Thuisbezorgd NL, Pizza For Coins Takeout delivered to your door!
Expedia, Cheapair, Lot, Destinia, BTCTrip, Abitsky, SkyTours, Fluege the Travel category on Gyft and 9flats For when you need to get away
BitHost VPS service
Cryptostorm, Mullvad, and PIA VPN services
Namecheap, Porkbun For new domain name registration
Stampnik Discounted USPS Priority, Express, First-Class mail postage
Reddit Gold Premium membership which can be gifted to others
Coinmap and AirBitz are helpful to find local businesses accepting bitcoins. A good resource for UK residents is at wheretospendbitcoins.co.uk.
There are also lots of charities which accept bitcoin donations, such as Wikipedia, United Way, ACLU and the EFF. You can find a longer list here.

Merchant Resources

There are several benefits to accepting bitcoin as a payment option if you are a merchant;
If you are interested in accepting bitcoin as a payment method, there are several options available;

Can I mine bitcoin?

Mining bitcoins can be a fun learning experience, but be aware that you will most likely operate at a loss. Newcomers are often advised to stay away from mining unless they are only interested in it as a hobby similar to folding at home. If you want to learn more about mining you can read more here. Still have mining questions? The crew at /BitcoinMining would be happy to help you out.
If you want to contribute to the bitcoin network by hosting the blockchain and propagating transactions you can run a full node using this setup guide. Bitseed is an easy option for getting set up. You can view the global node distribution here.

Earning bitcoins

Just like any other form of money, you can also earn bitcoins by being paid to do a job.
Site Description
WorkingForBitcoins, Bitwage, XBTfreelancer, Cryptogrind, Bitlancerr, Coinality, Bitgigs, /Jobs4Bitcoins, Rein Project Freelancing
OpenBazaar, Purse.io, Bitify, /Bitmarket, 21 Market Marketplaces
Streamium.io, XOtika.tv NSFW, /GirlsGoneBitcoin NSFW Video Streaming
Bitasker, BitforTip Tasks
Supload.com, SatoshiBox, JoyStream, File Army File/Image Sharing
CoinAd, A-ads, Coinzilla.io Advertising
You can also earn bitcoins by participating as a market maker on JoinMarket by allowing users to perform CoinJoin transactions with your bitcoins for a small fee (requires you to already have some bitcoins)

Bitcoin Projects

The following is a short list of ongoing projects that might be worth taking a look at if you are interested in current development in the bitcoin space.
Project Description
Lightning Network, Amiko Pay, and Strawpay Payment channels for network scaling
Blockstream, Rootstock and Drivechain Sidechains
21, Inc. Open source library for the machine payable web
ShapeShift.io Trade between bitcoins and altcoins easily
Open Transactions, Counterparty, Omni, Open Assets, Symbiont and Chain Financial asset platforms
Hivemind and Augur Prediction markets
Mediachain Decentralized media library
Tierion and Factom Records & Titles on the blockchain
BitMarkets, DropZone, Beaver and Open Bazaar Decentralized markets
Samourai and Dark Wallet - abandoned Privacy-enhancing wallets
JoinMarket CoinJoin implementation (Increase privacy and/or Earn interest on bitcoin holdings)
Coinffeine and Bisq Decentralized bitcoin exchanges
Keybase and Bitrated Identity & Reputation management
Telehash Mesh networking
JoyStream BitTorrent client with paid seeding
MORPHiS Decentralized, encrypted internet
Storj and Sia Decentralized file storage
Streamium Pay in real time for on-demand services
Abra Global P2P money transmitter network
bitSIM PIN secure hardware token between SIM & Phone
Identifi Decentralized address book w/ ratings system
BitGo Multisig bitcoin API
Bitcore Open source Bitcoin javascript library
Insight Open source blockchain API
Leet Kill your friends and take their money ;)

Bitcoin Units

One Bitcoin is quite large (hundreds of £/$/€) so people often deal in smaller units. The most common subunits are listed below:
Unit Symbol Value Info
millibitcoin mBTC 1,000 per bitcoin SI unit for milli i.e. millilitre (mL) or millimetre (mm)
microbitcoin μBTC 1,000,000 per bitcoin SI unit for micro i.e microlitre (μL) or micrometre (μm)
bit bit 1,000,000 per bitcoin Colloquial "slang" term for microbitcoin
satoshi sat 100,000,000 per bitcoin Smallest unit in bitcoin, named after the inventor
For example, assuming an arbitrary exchange rate of $10000 for one Bitcoin, a $10 meal would equal:
For more information check out the Bitcoin units wiki.
Still have questions? Feel free to ask in the comments below or stick around for our weekly Mentor Monday thread. If you decide to post a question in /Bitcoin, please use the search bar to see if it has been answered before, and remember to follow the community rules outlined on the sidebar to receive a better response. The mods are busy helping manage our community so please do not message them unless you notice problems with the functionality of the subreddit. A complete list of bitcoin related subreddits can be found here
Note: This is a community created FAQ. If you notice anything missing from the FAQ or that requires clarification you can edit it here and it will be included in the next revision pending approval.
Welcome to the Bitcoin community and the new decentralized economy!
submitted by BinaryResult to Bitcoin [link] [comments]

How to use Blockchain Wallet API v2 How to Use Blockchain Receive Payments API V2 BIP32 xpub How to use Block.IO API with PHP Bitcoin.de / Kraken - Trading API - Lass Dein PHP-Script ... Tutorial - Building Bitcoin Websites - How to Get The Price 1 of 2

Common operations Listing my bitcoin addresses. Listing the bitcoin addresses in your wallet is easily done via listreceivedbyaddress.It normally lists only addresses which already have received transactions, however you can list all the addresses by setting the first argument to 0, and the second one to true. Blockchain Bitcoin Developer APIs - PHP. Contribute to blockchain/api-v1-client-php development by creating an account on GitHub. Bitcoin Reserve PHP SOAP Client. This software enables your application to send SOAP messages to Bitcoin Reserve and receive responses. It requires credentials for an active BitcoinReserve.ch Business Account obtainable through the website.. Requirements Accordingly, the only thing you need to accept bitcoins is a bitcoin client on the server. It is called bitcoind, it’s just a console version of the client, with all the same familiar functionality. It works through the JSON-RPC protocol, is located under port 8332. All that remains after installation is to set up the client and Node.js. The libbitcoin client-server protocol (API) is sometimes referred to as the Obelisk protocol, as this was the name of the first version of the server. In the first version the client API was contained within the libbitcoin-server library, which led to a dependency between client applications such as Bitcoin Explorer (bx), and the server library.

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How to use Blockchain Wallet API v2

Ein paar Anmerkungen zum Thema Börsen für Kryptowährung und ihre Trading-API - persönlicher Erfahrungsbericht. Super spannend... mega faszinierend, wenn das ... Step-by-step tutorial on how to use block.io wallet API to integrate bitcoin payments on your website. Building Bitcoin Websites Book: https://www.amazon.com... This tutorial goes over step-by-step on how to use blockchain.info's receive payments API v2 HD BIP32 xpub request and callbacks. Building Bitcoin Websites B... Intro to using blockchain's API. This video goes over the right way to get set up and then how to generate addresses using PHP. My Book: https://www.amazon.c... How to set up blockchain.info wallet service API. Blockchain Wallet API V2 My Book: https://www.amazon.com/Building-Bitcoin-Websites-Beginners-Development/dp...

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