How did Binance become the largest exchange? - Latest Gadgets

Brave Browser: TRULY FASTER - The browser that rethinks the web

Brave Browser: TRULY FASTER - The browser that rethinks the web
The Brave browser is very new to the browser scene but they are seriously making a huge thing in the market. Not only promising and insanely fast speed beat out Chrome and Firefox but also security and privacy built in by default for the user. Is this all just hype, is it there is something to it and why most people switch to Brave.

https://preview.redd.it/gaodv4set1151.png?width=625&format=png&auto=webp&s=9656fe17369c4389964addd9145822e0acf9bb05
For the record, Brave Rewards, BAT, Brave Ads & anything cryptocurrency related is DISABLED by default. This is a big misconception as these features are OPT IN and completely optional to the user.
The browser you currently using loaded with trackers, cookies and other data collection parasites that is constantly following you when you are browsing your browser. What if instead of being used, you were actually rewarded for your regular internet usage. What if you could limit your ads. Wouldn't it makes internet a better place. That's why i use Brave browser. Brave doesn't collect my browsing data in fact my data never leaves my device. Brave shields against Malware, Autoplaying videos, Phishing attempts, Fingerprinting and other malicious attempt to steal and exploit your sensitive information.

BRAVE Introduction

Brave is built on Chromium and is an open-source browser project that aims to build a safer, faster and a more stable way for all internet users to experienced the web.

Why BRAVE browser

Load pages 3x to 6x faster
Import and continue where you left off
Support your favourite sites with Brave Rewards
Experience unparalleled privacy and security.

BRAVE browser features

Shields
  • Ad blocking
  • Fingerprinting prevention*
  • Cookie control*
  • HTTPS upgrading*
  • Block scripts*
  • Per-site shield settings
  • Configurable global shield defaults
Brave Rewards
  • Earn by viewing private ads
  • Tip your favorite creators
  • Contribute monthly to sites
  • Auto-contribute to sites
  • Verify with Uphold and move funds in and out of your wallet
  • Become a verified creator and start earning BAT from tips, contributions and referrals
Tabs & Windows
  • Private Windows
  • Pinned Tabs*
  • Auto-unload*
  • Drag and drop*
  • Duplicate*
  • Close Options
  • Find on page
  • Print page
Security
  • Clear browsing data
  • Built-in password manager
  • Form autofill
  • Control content access to full-screen presentation*
  • Control site access to autoplay media
  • Send “Do not track” with browsing requests
Search
  • Choose default search engine
  • Use keyboard shortcuts for alternate search engines*
  • Option to use DuckDuckGo for private window search*
Extensions/Plugins Brave Desktop now supports most of the Chrome extensions in the chrome web store.
Address Bar
  • Add Bookmark
  • Autosuggest URLs
  • Search from address bar
  • Autosuggest search terms
  • Show/hide bookmarks toolbar*
  • Show secure or insecure site

How does Brave Rewards work?

  • Brave Browser users earn tokens by surfing the web.
  • They tip tokens to you, their favourite content creator.
  • You sign up as a verified content creator on Brave Rewards.
  • Collect your tips in the creators dashboard.
For more info: https://creators.brave.com/

Brave and Binance Partner to Bring Cryptocurrency Trading Directly Into the Browser

Binance widget integrated into the Brave browser puts cryptocurrency management and trading at users’ fingertips in first exchange-browser integration of its kind.
For more info: https://brave.com/binance/
Previous post:
Ethereum Traders Are Extremely Bullish Despite Multiple Looming Storm Clouds https://www.publish0x.com/steven-leong/ethereum-traders-are-extremely-bullish-despite-multiple-loom-xgdpyqj
Day trading has replaced sports betting as a Pastime for America https://www.publish0x.com/steven-leong/day-trading-has-replaced-sports-betting-as-a-pastime-for-ame-xvrrvyy
$90 Million Bitcoin Pizza Story Has an Startling Silver Lining https://www.publish0x.com/steven-leong/90-dollars-million-bitcoin-pizza-story-has-an-startling-silv-xdrrevp
China Is Not Banning Bitcoin Mining https://www.publish0x.com/steven-leong/china-is-not-banning-bitcoin-mining-xwnnjej
IBM becomes a shareholder in we.trade https://www.publish0x.com/steven-leong/ibm-becomes-a-shareholder-in-wetrade-xlllkxl
Coinbase allow employee to work remotely after lockdown is over https://www.publish0x.com/steven-leong/coinbase-allow-employee-to-work-remotely-after-lockdown-is-o-xnllmjx
Bitcurate - Cryptocurrency predictive data intelligence platform https://www.publish0x.com/bitcurate-crypto-predictive-data-intelligence/bitcurate-cryptocurrency-predictive-data-intelligence-platfo-xgddnxm
Introduction to Bitcurate LIVEFEED: 1-Stop Crypto Alert https://www.publish0x.com/introduction-to-bitcurate-livefeed/introduction-to-bitcurate-livefeed-1-stop-crypto-alert-xdrrqwj
Resources
  1. https://brave.com/
submitted by letscryptonize to Publish0x [link] [comments]

Re-Launching The Borderless, Unkillable Crypto-Fiat Gateway, DAIHard. Enter or Exit Crypto via Any Fiat and Any Payment Method, Anywhere in the World, Without KYC. All you need is a little Dai.

Some of you might recall recall our initial facepalm failed launch about 3 months ago (post-mortem here). Well, we're back--this time with an audit and some new features. This version of DAIHard should should die a little harder this time ;)

The Audit

After shopping around a bit in the auditor space, we decided to go with Adam Dossa--the very same Adam Dossa that actually found our launch vulnerability and responsibly disclosed it to us! You can see his report here. By the way, Adam has been a gem: friendly, professional, timely, and flexible. Definitely keep him in mind if you need an audit!

(Re)Introducing DAIHard

Following is an updated version of our original launch post. If you've already read that, you might want to skip to the heading What's New in v0.9.2. Or you can go straight to the app or go to our info site for more info!
Here is a legitimate concern most of us are familiar with:
To enter or exit the crypto economy, we rely on centralized exchanges such as Coinbase, which track their users, impose limits, and are tightly coupled to their jurisdiction and its banking system. And for all we know, any day now regulations could start tightening these controls further (*we've actually seen some of this play out in the two months since our first launch post). In light of this, can we say in any meaningful sense that crypto is anonymous, limtiless, borderless, immune to regulation, and (most importantly) unstoppable?
To really address this concern, we need a completely decentralized gateway between fiat and crypto: something that extends the benefits of crypto to the very act of moving between the old and new economies. But the design of such a platform is far from obvious.
(Localethereum comes close, but as discussed under Unkillable, it doesn't quite cut it. And Bisq is decentralized, but has significant UX hurdles.)
We believe we've found a solution. We are proud to present:

DAIHard v0.9.2 - Almost Definitely Not Broken This Time

If you want to jump right in, we recommend first watching our latest usage demo (7 min), then diving in and giving it a shot with a small amount of Dai. (Try it on Kovan first if mainnet is too scary!)
DAIHard extends many of the promises of crypto (borderless, anonymous, limitless, unstoppable) into the exchange mechanism itself, allowing anyone, anywhere to bypass centralized exchanges and the control they impose.
More concretely, DAIHard is a platform, run on smart contracts, for forming one-off crypto/fiat exchanges with other users, in which:
Again, our latest usage demo (7 min) shows this process in action.

Two drawbacks

You Need either xDai, or both Dai and Ether, to Use The Tool (At Least For Now)

If you want to buy Dai on DAIHard, you must already have Dai--1/3 of the amount you want to purchase--to put up as a burnable deposit. For example, if you only have 10 Dai now, you can only commit to buying 30 Dai, and must complete that trade before using the newly bought Dai to open up a bigger offer (for up to 120 Dai that time).
Most tragically of course, this means that if you don't already have some crypto, you can't use this tool to get crypto--this is why we avoid calling DAIHard an onramp specifically. This comes from the fact that both parties must have "skin in the game" for the game theory to work, and a smart contract can only threaten to burn crypto.
We have some ideas on how to address this drawback in the not-too-distant future, which we'll write about soon. For now it's time to launch this thing and get some users!

Dangerous and Scary To Use

In rare cases, a user may have to burn Dai and face a loss on the entire trade amount. The necessity of this ever-present risk is explained in detail in DAIHard Game Theory.
However, a cautious, rational user can gather information (possibly via our [subreddit](daihard)!) about how people have used the tool, successfully and unsuccessfully. They can then create a buy or sell offer with wisely chosen settings based on what has worked for others. Other cautious, rational users can find this offer and commit to the trade if they dare. We expect the vast majority of committed trades should involve rational, cautious users, and should therefore resolve happily.
Still, inevitably there will be sloppy trades that result in burns. As the tool is used, we'll be keeping a close eye on the frequency of burns and keeping you guys updated (perhaps via a "System Status" utility similar to the one found on MakerDao's explorer). In the end, though, we expect the risk in using DAIHard to be comparable to the risk of using any exchange or DNM: ever-present but low enough for the platform to be useful as whole.
So, while DAIHard will never shut down and can't perform an exit scam, the bad news is it's not risk-free. Users will have to approach DAIhard with the same level of caution they would with any new exchange (albeit for different reasons and with a different approach).
So what's the good news?

The Good News

While these drawbacks are significant, they enable some remarkable features that no other crypto/fiat exchange mechanism can boast.

Unkillable

(Correction: Bisq seems to have a decentralized arbitration system)
We are aware of no other crypto/fiat exchange platform that is truly unkillable. Bisq and localethereum comes close, but both localethereum relies on centralized processes of arbitration. This means their fraud-and-scam-prevention system can be sued, jailed, or otherwise harrassed--and if that part stops working, it doesn't matter how decentralized the rest of the system was.
DAIHard, in contrast, gives the users the power to police and punish each other, via the aforementioned credible threat of burn. This is simple game theory, and the rules of this game are etched permanently into the DAIHard Factory and Trade contract code: impervious to litigation, regulation, and political pressure.
This Factory contract has no owner and no suicide or pause code. It cannot be stopped by us or anyone else.
Like Toastycoin, this thing was immortal the moment it was deployed (even more immortal than RadarRelay, for example, which does rely on an ownership role). Both DAIHard and Toastycoin (and probably whatever we build next) will last for as long as a single Ethereum node continues mining, and it will remain easy to use as long as someone can find the HTML/JS front-end and a web3 wallet.
(The HTML/JS front-end (built in Elm, by the way, with the lovely elm-ethereum!) is currently hosted on Github pages, which is centralized--but even if Github takes down the page and deletes the code, it's a minor step to get the page hosted on IPFS, something that is on our near-term roadmap in any case)

No KYC, No Limits

It's smart contracts all the way down, so DAIHard never asks any nosy questions--if you have Metamask or some other web3 wallet installed and set up, with some ETH and Dai (or just xDai), you can immediately open or commit to a trade. You don't even need a username!
(In fact, we're so inclusive, even machines are allowed--no CAPTCHA here!)
You're limited only by the collateral you put up, so if you have 10,000 Dai you could open up a buy offer for 30,000 Dai (or a sell offer for 10,000 Dai) right now.
We do reccommend trying the tool out first with a small amount of Dai... But we're not your mom! Do what you want!

Borderless

It simply doesn't matter where you are, because DAIHard doesn't need to interface with any particular jurisdiction or payment system to work. DIAHard works by incentivizing people (or robots?) to navigate the particular real-world hurdles of bank transfers, cash drops, or other fiat transfer methods. These incentives work whether you're in America, Zimbabwe, or the Atlantic; they work whether the fiat is USD, EUR, ZAR, seashells, or Rai Stones; and they work whether your counterparty is a human, an organization, a script, or a particularly intelligent dog with Internet access.

Any Fiat Type, and Highly Customizeable

Here are some examples of the types of trades you might create or find on DAIHard.
As the DAIHard community grows, users will doubtless find much more creative ways to use the system, and we will discover together which types of trades are reliable and which are more risky. Because users can set their own prices and phase timeout settings, we expect the risky trades to charge a premium or have longer time windows, while the reliable ones rapidly multiply at close to a 1:1 price ratio, with quick turnaround times.

Extensible (with profit) by Third Parties

Not satisfied with our interface? Do you have some nifty idea for how to display and organize user reputation? Or maybe some idea for how trades could be chained togeher? Maybe you'd like to design a notification system for DAIHard? Maybe you just want a different color scheme!
Well, you won't need our permission to do any of this. Any tool that watches the same Factory contract will share the pool of trades, regardless of which tool actually creates the trade. This means we don't even have to fight over network effects!
And if you look closely at our fee structure, you might notice that only half of the 1% DAIHard fee is "hardcoded" into the Factory contract. The other half is set and charged by our interface. What does this mean for you? If you go out and make a better interface, you can essentially replace half of our 1% fee with your own fee--it's up to you whether it's smaller or larger than the replaced 0.5%.
The reason for this is to explicitly welcome other developers to extend what we've built. For as long as our team is the only one improving the platform, a threat to us is a threat to future upgrades. But if others begin extending the DAIHard platform too, then DAIHard will not only be unstoppable as it is today, but also grow unstoppably.

(For Real This Time) This Is a Big Fucking Deal

DAIHard is a turning point in crypto and a breakthrough in decentralized markets, and is an irreversible augmentation of the Ethereum platform.
What we've built is a gateway to crypto completely devoid of centralized components--rendering entry and exit to crypto unkillable, flexible, borderless, and private. Centralized exchanges, and the control they impose, can now be bypassed by anyone with Dai and a web3 wallet.

What's New in v0.9.2

There have been many changes made since our first failed launch, but there are two rather important ones: xDai support and reputation tools.

xDai support

DAIHard is now operational on xDai, a sidechain whose native token (xDai) is pegged to the Dai (and therefore $1). Add the xDai network to your Metamask (or just install Nifty Wallet), then switch to the xDai network in your wallet, to try it out. xDai has some pretty incredible benefits, compared to vanilla Ethereum:

Reputation tools

We now have a few reputation tools. First, on any open trade, there is a widget showing the number of releases, aborts, and burns the given address has been involved in as that role (buyer or seller). Clicking on this expands the widget to show more detailed information, and also provides a link to a page that lists each trade this user has been or is involved in.

What's next?

We have tons of ideas on how to improve the product--too many, in fact, to commit to any before we get a good chunk of user feedback. Here are some of our favorite ideas:

Near-Term, Smaller Features

  1. Lots of usability improvements.
  2. A "System Status" utility similar to the one found on MakerDao's explorer).
  3. Marketplace / My Trades rework.
  4. A "QuickTrade" page, offering Trade Templates as an alternative to the current Create Offer page.

Big Exciting Features

  1. Bootstrapping people with no DAI via other mechanisms and community outreach.
  2. Partial commits to trades. eg. Place a 10,000 DAI trade and allow it to be picked up in blocks larger than 500 DAI at a time.
  3. More chains, get this thing working on Bitcoin via Rootstock, on Ethereum Classic and Binance Chain.

Stay Informed!

A lot of the above features will be prioritized more clearly as we get user feedback, and we will be posting fairly frequent updates and articles on our info site. If you don't want to miss anything, note the subscribe widget and sign up!
submitted by coinop-logan to ethereum [link] [comments]

Need some PyQt5 Help

Hi /learnpython,
I'm looking for some help with PyQt5, I'm pretty good with tkinter but have been trying to get into learning a more powerful GUI tool. Please don't shout at me for this obvious question.
I have been creating a tabbed GUI for an automated trader to be used with Binance (Crypto trading). I think i'm struggling with the parent / child relationships of it all. Code is below.
Right down at the bottom you'll see i'm trying to add a simple label to the summary tab i created. The label is called BitcoinPriceLabel. How do i then add that label to the Summary_Tab?

Thanks for the help!
Jake


import sys from PyQt5.QtWidgets import * #QApplication, QWidget from PyQt5.QtGui import *
class Example(QMainWindow):
def __init__(self): super().__init__()
self.initUI()
def initUI(self): #This section adds all the items in initiation. #PosX, PosY, SizeX, SizeY self.setGeometry(100, 100, 1024, 768)
self.setWindowTitle('Jakes Python Binance Trader') self.setWindowIcon(QIcon('Binance_Logo.png')) self.statusBar().showMessage('Ready to go...') MainLayout=QVBoxLayout(self)
#Settings for tooltips QToolTip.setFont(QFont('SansSerif', 10))
#Button example #ExampleButton = QPushButton('The Button', self) #ExampleButton.setToolTip('This is an example Push Button') #ExampleButton.resize(ExampleButton.sizeHint()) #ExampleButton.move(50,50) self.CreateFileMenu() self.CreateTabs() self.CreateSummaryTab() self.show()
def CreateFileMenu(self): #This function defines all buttons on the menu bar and adds them to #The main window #Define actions to be added into the menu bar exitAct = QAction(QIcon('exit.png'), '&Exit', self) exitAct.setShortcut('Ctrl+Q') exitAct.setStatusTip('Exit application') exitAct.triggered.connect(qApp.quit)
def CreateTabs(self): self.MainWidget=QWidget(self) self.Tablayout = QVBoxLayout(self.MainWidget) Main_Window_Tab_Widget=QTabWidget(self)
#Define a bunch of tabs Summary_View = QWidget() Summary_View_Layout = QVBoxLayout(Summary_View) Main_Window_Tab_Widget.addTab(Summary_View,'Summary View')
Trade_Rules= QWidget() Trade_Rules_Layout = QVBoxLayout(Trade_Rules) Main_Window_Tab_Widget.addTab(Trade_Rules, 'Trade Rules')
Trade_Log= QWidget() Trade_Log_Layout = QVBoxLayout(Trade_Rules) Main_Window_Tab_Widget.addTab(Trade_Log, 'Trade Log')
Profit_Loss= QWidget() Profit_Loss_Layout = QVBoxLayout(Trade_Rules) Main_Window_Tab_Widget.addTab(Profit_Loss, 'Profit/Loss')
Settings_Tab= QWidget() Settings_Tab_Layout = QVBoxLayout(Settings_Tab) Main_Window_Tab_Widget.addTab(Settings_Tab, 'Settings')
#Add tabs to main window self.Tablayout.addWidget(Main_Window_Tab_Widget) self.setCentralWidget(self.MainWidget)
def CreateSummaryTab(self):
self.BitcoinPriceLabel = QLabel("Bitcoin / USD") How do I add this to the Summary Tab defined above?
if __name__ == '__main__': app = QApplication(sys.argv) ex = Example() sys.exit(app.exec_())



submitted by Jakesrs3 to learnpython [link] [comments]

Groestlcoin Release September 2018

Introduction

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

What's been Happening?

GRSPay Released

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

Melis Wallet

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

How Melis Works?

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

Guarda Wallet

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

Integrated into HolyTransaction

What is HolyTransaction?

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

Features

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

Integrated into NEXT Wallet

What is NEXT?

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

Features

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

Integrated into Blockchain Financial

What is Blockchain Financial?

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

Blockchain Financials mission

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

More information from Blockchain Financial

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

Groestlcoin Listed on Huobi

Who are Huobi?

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

Groestlcoin Core v2.16.3 - Please Update ASAP

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

What's new in version v2.16.3?

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

The Technicals

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

Groestlcoin Electrum-GRS 3.2.2 - Ledger & Trezor Edition

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

Changes:

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

Electrum-GRS Mobile Android

What is Electrum-GRS Mobile?

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

Changes

Groestlcoin EasyVanity Released

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

Features

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

Groestlcoin Sentinel (Android & Blackberry) – Mainnet + Testnet

What is Sentinel?

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

What's New?

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

Groestlcoin Web Wallet Update 1.4

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

Questions about Contractium

Questions about Contractium

1) Why do we create CTU?
Ethereum's blockchain technology based on the Proof-of-Work (PoW) algorithm and now it is planning to switch to Proof of Stake (PoS). That’s why we create Contractium, which is based on Ethereum with the Proof-of-Contract (PoC) algorithm.
2) How are CTU created?
The total supply of CTU and its rate of issuance will be decided by the donations gathered on the 2018 presale. The results will be roughly: • 900 million CTU will be created to contributors of the presale. • 200 Million CTU will be created to the development fund, most of it going to early contributors and Founding & Developing Teams. • 200 Million CTU will be created for team and partners all over the world. • 200 Million CTU will be created for business experience with the other business platforms all over the world.
3) Is the CTU supply infinite?
No. Total supply: 3,000,000,000 For sales: 1,500,000,000
4) Who needs CTU?
PARTY A: (As contracter role) Game developers Business Sellers / Suppliers / Vendor / Retailers / Wholes Publisher Advertiser Consultant / Provider
PARTY B: (As contractee role) Game player Freelancer Buyer / Purchaser / Vendee / Customer / Shopper Audience User Client
5) Who intend to use the Contractium to proceed the smart contract?
I will buy CTU during the 2018 ICO. How will I access it? You can access to your sending ETH ERC-20 Wallets to view or send CTU tokens: - Ethereum Wallet - Myetherwallet - Metamask
6) Can I mine CTU?
No, you can not.
7) What's the relationship between ETHEREUM and CTU?
Firstly, we should know about the relationship between bitcoin and ether? Ethereum would never be possible without bitcoin—both the technology and the currency—and we see ourselves not as a competing currency but as complementary within the digital ecosystem. Ether is to be treated as "crypto-fuel", a token whose purpose is to pay for computation, and is not intended to be used as or considered a currency, asset, share or anything else. And the relationship between Ethereum and Contractium? Ethereum's blockchain technology based on the Proof-of-Work (PoW) algorithm and now it is planning to switch to Proof of Stake (PoS). Contractium is based on Ethereum with the Proof-of-Contract (PoC) algorithm.
Hence, Contractium would never be possible without ETHEREUM, both the technology and the currency. Again, we see that ETHEREUM is a token whose purpose is to pay for computation, and is not intended to be used as or considered a currency, asset, share or anything else... That's why we create Contractium.
There are many ways in which you can trade ETH for CTU and vice versa: Trading ETH for CTU: - We will work with multiple third party companies, as cryptocurrency exchanges to make the exchanging of CTU and ETH as soon as possible. Working as freelancer for CTU: - We will work with multiple third party freelancer marketplaces on Integrating Contractium for online services so that freelancers can earn CTU via working deal Buying / Purchasing goods online for CTU: - We will work with multiple third party e-commerce sites on Integrating Contractium so that users can earn CTU when buying/purchasing goods online. Internet consuming for CTU: - We will work with multiple third party companies, such as: publishers, advertisers, social media, social networks, display ads networks, search engines, community sites... on Integrating Contractium so that their users can earn CTU when clicking/reading/viewing/watching an ads in common. Subscription with registered personal profile ( Giving out personal social data) for CTU: - We will work with multiple third party commercial platform/software... on Integrating Contractium so that their visitors can earn CTU when providing personal data to make a subscription and/or a business subscription.
8) How do I send CTU to other wallets?
ATTENTION: Contractium addresses don't have built-in checks on them yet. That means that if you mistype an address, your CTU will be lost forever, without a secondary confirmation window. If you are moving a significant amount, start with smaller quantities that you can afford to lose, until you feel comfortable enough. There are two types of Ethereum wallets: Exchange wallets: Such as:
POLONIEX
COINBASE
KRAKEN
BINANCE
BITTREX
etc... Ethereum ERC-20 wallets: Such as: - Ethereum Wallet - Myetherwallet - Metamask
You can buy CTU via token sales with Ethereum ERC-20 wallets and hold it or you can send CTU tokens to the exchanges to trade it with the other tokens. (to be updated with contribute CTU address)
9) Transaction Receipts?
Anytime you create a transaction in Contractium, the string that is returned is the Transaction Hash . You can use those to keep track of a transaction in progress, or the amount of gas spent in a past transaction using: {with your Ethereum addresses} (Etherscan is a Block Explorer and Analytics Platform for Ethereum, a decentralized smart contracts platform). and/or (Ethereum Tokens Monitor: Easy to view for investors and ICO API and Widgets for developers)
submitted by RiinaLaine to u/RiinaLaine [link] [comments]

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