Instead of leaving decisions to a few partners, anyone who invested would have a say in which companies to fund.The DAO is built on Ethereum, a system designed for building decentralized applications.Code was supposed to eliminate the need to trust humans.The programming language that Ethereum developers use to write smart contracts, Solidity, makes it really easy to make this sort of mistake, says Emin Gun Sirer, a Cornell University computer scientist who co-authored a paper earlier this year pointing out a number of potential pitfalls in the DAO s design.Ethereum works much like Bitcoin does: the system records each transaction in a global ledger that resides on every Ethereum user s computer.The fact that a fork is being discussed at all proves that despite the Ethereum team s best efforts, machines will always be subject to the messy politics of the human world.
By not studying the code implementing a smart contract, investors have exposed themselves to a multimillion-dollar lossThe DAO, a crowdsourced VC fund built on the Ethereum smart contract platform, saw the value of invested funds plunge to under US$100 million in June 2016, after someone found a way to divert invested funds to another account.Investors in a "smart contract" built on the Ethereum blockchain platform may have lost cryptocurrency worth millions of dollars because they missed a loophole in the contract's fine print.The contract was written in Ethereum's Solidity programming language, and the fine print was the code that set out the rules for investing in, operating, and withdrawing from a crowd-sourced venture capital fund called The DAO The Distributed Autonomous Organization.It's a bit like asking a bank teller for all the money in an account, taking the cash -- and then asking again for all the money in the account, before the teller gets a chance to update the balance.To restore confidence and provide an opportunity for The DAO investors to recover their money, the Ethereum Foundation has proposed changing the underlying rules, introducing the equivalent of a constitutional amendment to freeze the account to which The DAO's funds were diverted.For The DAO investors in particular, it's the ultimate test of whether they truly want to be part of a decentralized economy, with no central authority to judge and to impose redress.
After years of creating bigger and better stand mixers, KitchenAid has addressed the needs of a growing number of keen bakers who have limited space and smaller batch lifestyles.The Artisan Mini might have the irresistible good looks of the iconic Artisan stand mixer, but it's 20% smaller and 25% lighter, with a downsized bowl to match.For all its compactness, it packs no less power than its bigger counterpart, can use the same optional hub attachments and is still available in four covetable colours – Honeydew exclusive to John Lewis , Matte Black, Matte Grey and Hot Sauce.At 6.5kg, it feels no less sturdy when in use, but it s easier to move around when required.When tipped up, it has a tendency to slightly lift the base and bowl if it s empty.The body is made from the same enamelled die-cast zinc for easy cleaning and a feeling of solidity.
The company s winning combination of glass and aluminum, here on full display, lends solidity, while thick aluminum siding and scratch-resistant glass — Corning Gorilla Glass 5, to be exact — imbue a level of sturdiness.Somewhat unintuitively, its sharp angles don t dig into the skin in the way you might expect.HTC said the Bolt is the first water-resistant Android phone with a unibody design — specifically of the IP57 variety, which means it ll handle limited exposure to dust and water.Switched on, the stream was perceptibly clearer and louder, especially around the middle range of the frequency spectrum.High frequencies also lack detail.And HTC s packed software, Boost , optimizes it further by cleaning up old files and dynamically allocating resources.
A new report suggests Samsung is working on two types of foldable phones.Samsung foldable phone rumors might be forming a bit more solidity.As originally reported by the South Korea-based Electronic Times and spotted by Android Headlines, the company is developing a pair of foldable dual-screen phones for possible release next year.The company seems eager to move beyond traditional handset designs—and perhaps away from products associated with exploding batteries.Like the curved Galaxy Round and the original Note 4 Edge, Samsung apparently won t be mass-producing these phones at the start.Rather, the company will release limited editions to gauge interest before making a bigger commitment.
Open Fiber will receive a very welcome cash injection of €500 million as it continues its fibre rollout across Italy.The pressure has been building on TIM over the last few months, as government agencies and consumers alike continue to become frustrated with the state-of-play with national infrastructure, but Open Fiber is proving to be a suitable competitor.It’s a disruption which the stagnant market probably needed, but Open Fiber can now boast of a €500 million war chest to continue to build out modern networks required for the digital economy.“The result we announce today is a confirmation of the solidity and sustainability of our business plan, around which investors are increasingly attracting interest,” said Tommaso Pompei, CEO of Open Fiber.“Open Fiber is now booming, thanks to a significant growth program also for its significant direct and indirect socio-economic impacts.”The whole-sale only player has now confirmed the €500 million, 15-month bridge loan with BNP Paribas, UniCredit and SocGen, which will support its FTTH ambitions.
Doogee and online retailer Lightinthebox have partnered up to bring you guys some interesting deals on three different devices, we’re talking about the Doogee BL5000 and the two versions of the tri-bezel-less Doogee Mix; let’s check them out!The Doogee BL5000 is a device which comes with very unique design, it does indeed feature an 8 sides curved body and uses 3D polishing for a more refined finish.In the middle we find a metal frame that gives the phone some solidity and integrates into the overall sleek look.Specs wise, the BL5000 is powered by a Mediatek 6750T, 4GB of RAM and 64GB of internal storage.The display is 5.5-inch in size and sports Full HD resolution.On the back we find a 13MP dual camera combo, meanwhile the front-facing shooter has a resolution of 8.0MP.
Are you looking for a device with a refined design, dual cameras and a long battery life?Then you might take into consideration the Doogee BL5000, a smartphone that packs all of that at a super affordable price; let’s learn more about it!The Doogee BL5000 comes with a very unique design, it does indeed feature an 8 sides curved body and uses 3D polishing for a more glamour look.In the middle we find a metal frame that gives the phone some solidity and a better feeling in the hands.Specs wise, the BL5000 is powered by a Mediatek 6750T, 4GB of RAM and 64GB of internal storage.The display is 5.5-inch in size and sports Full HD resolution.
Smart contracts language easy to use and create exploits withAn Ethereum-backed contest has revealed a few new tricks for disguising malware as the harmless code the network uses to transfer and manipulate funds: digital smart contracts.After a $50m hack in 2016, the community controversially decided to roll back the digital records ledger with a new "hard fork" – essentially creating two versions of Ethereum, one before the hack and one after.On Thursday an Ethereum Foundation-supported group announced three winners of a new hacking competition for creating malicious smart contracts with their standard programming language, Solidity.It's called the "Underhanded Solidity Coding Contest" and judges included Solidity lead dev Christian Reitwiessner.It seems to show that Ethereum's community is continuing to keep an eye on different aspects of the security landscape of its platform.
The AllCall W1 is among the most advanced smartwatch phones we’ve seen coming out from China in the last months.AllCall’s device does indeed come with a good MTK 6580m processor and it runs a customized Android 5.1 Lollipop ROM.It also sports most smart features you find on smartwatches and a beautiful display at the front; let’s learn a bit more about it!The AllCall W1 comes with a relatively large Samsung-produces AMOLED display, thus we expected to see a good quality panel and real blacks that will allow the smartwatch to save power when possible.The display on the W1 also features touch capabilities, so you’ll be able to scroll through watch faces and menus with simplicity.The screen has a resolution of 400×400 and is surrounded by a stainless steel frame, which gives it both solidity and a premium look.
Using Ethereum's programming language Solidity, a dev has controversially written code for making data authentication signatures with the insecure SHA-1 cryptographic hash function.Nick Johnson, the London-based Ethereum developer who authored the code, told The Register: "SHA1 is still used by a lot of legacy systems, including many SSL/TLS certificates, parts of DNSSEC, and Git.Being able to verify hashes produced in those systems lets us interact with them on the Ethereum blockchain."But not all agree that's a good idea.University College London postdoctoral blockchain researcher Patrick McCorry told The Register: "This comes down to a security vs compatibility argument."Attacks only get better and we as a community should do our best to move away from broken algorithms."
Our review unit arrived with a 13.9-inch Full HD (1,920 x 1,080) display, a quad-core Core i7-8550U, 8GB of RAM, and a 256GB PCIe solid-state disk (SSD).Close the lid and you’ll think the machine is forged from a single hunk of metal.As before, the watchband hinge is beautiful, and it feels great to use, offering just the right amount of resistance.Our review unit featured a bronze color scheme and doesn’t stand out in this very crowded market.While the Yoga 910 suffered from a weird configuration of underpowered USB-C ports that offered limited USB 3.0 and 2.0 support, the Yoga 920 makes much better use of the new standard.The Yoga 920’s display covers 72 percent of the AdobeRGB color gamut.
If you’re new to all this cryptocurrency stuff, including smart contracts, ICOs, and TGEs (token generation events), check out our Guide to Blockchain Development to dip your toe in the water. If you find yourself wanting to learn more, look at the Ethereum Whitepaper.If you already know what Ethereum and smart contracts are, but still have some points to clarify, then read on.How does one make smart contracts and avoid mistakes? VironIT has experience in writing, testing, and deploying Ethereum smart contracts and its web interface. Over time we have collected questions and answers about smart contract development, so let’s dive right in! I need pre-ICO and ICO. Should I have 1 or 2 contracts?If the period between pre-ICO and ICO is short, it is more convenient to create a single smart contract for both pre-ICO and ICO.If it takes more than a few months, then chances are everything will change considerably, to the point where you will have to create a new smart contract for the ICO phase.Then the security issue must be considered. Two simple contracts are likely to be more robust than a large and complex one.For example, project Hackspace Capital raised 18 000 ETH in September using one smart contract, and it worked perfectly for them (here is a video of an Ethereum Wallet our company recently finished for them).Ethereum’s smart contracts are not easy to develop and are even more difficult to run and test, and the cost of failure is high.Hackspace Capital is a platform established for investing in and developing early-stage technology hardware. It connects hardware startups identified by its strategic partner How to update a deployed smart contract Please note, Ethereum contracts are immutable. Once deployed to the blockchain, they cannot be updated. The only way to change the code is by destroying it altogether by the SELFDESTRUCT opcode (selfdestruct) (in solidity) and deploy everything again. Imagine how painful this could be having hundreds of backers already. You would have to mint all the tokens again, which may have a devastating impact on your online reputation and the whole ICO’s success. How to write upgradable contracts in SolidityTo write an upgradable smart contract, you have to connect third-party libraries. However, using such contracts compromises security. This can be seen in the case with Parity, when about $150 million was locked in smart contracts delivered before 20 June 2017. Some valuable functions to include in your Smart Contractpause/unpause – to put on hold or resume token operationssetRate – to change token costmint – to charge tokens to the right address manually (for example, if you receive payment via bank transfer or in some other way)changeOwner – to replace a contract holderchangeWallet – to replace an active wallet to receive tokens from a fallback function How much can I raise? What are HardCap and SoftCap limits?ICO is a limited time fundraising campaign. There are several variables that describe limits and time frames; these terms are hard cap, soft cap, and total supply.Soft Cap is the minimum amount of funds required for the ICO to be considered successful.Hard Cap is the maximum amount of funds raised. For example, if terms haven’t yet been reached, but the hard cap is already assembled, the company stops fundraising and project development starts.Total supply is the total number of coins or tokens that are in existence, including those circulating in the public market and those that are locked or reserved.Please consider the following points:What will happen with the unsold tokens at the stages of pre-ICO and ICO?What will happen if the soft cap is not achieved? How will they be refunded?Is it possible to issue additional tokens and, if so, on what conditions? Should I limit token transfer?Yes, you should. Please consider the following points:What is the amount of issued and mined tokens?Is there a limit on the release, as determined by the initial price of the tokens?Be aware that a big player can derail the rate of your tokens on the stock exchange, buy them for next to nothing, and then resell them when the rate rebounds, so, it’s necessary to restrict the transfer of tokens in the pre-ICO / ICO and after the ICO period. But this will not resolve all the problems if you don’t make a right KYC, the process in which a business identifies and verifies the identity of its clients. Token distributionYou should come up with a clear plan for the distribution of tokens, such as:20% reserved for founders15% for the purchase of data from data providers60% goes on sale2% for the Advisory Board3% for the Bounty ProgramConsider whether the distribution should be automatic or manual.How to determine the start and end dates of pre-ICO/ICOWe advise you to avoid a fixed date for the start/finish in the smart contract. *hit happens and schedules shift.That is why it is better to have manual control over the start and end of these events:Start pre-ICO / Stop pre-ICOStart ICO / Stop ICO What’s the difference between utility and security tokens?There are two types of tokens, utility tokens and security tokens.Utility tokens drive the entire system. They allow one to develop features for the distributed ledger, access, and interaction with the system. They offer a vote in a meaningful way for free information and the possibility of exchanging opinions among token holders.Security tokens represent a monetary investment in a startup, a share of profits, losses, assets, or liabilities. They offer status as an equity holder, creditor, or lender. Security tokens involve an expectation of profits consisting of dividends, periodic payments, and investment value. Profits are to be derived from the entrepreneurial or managerial efforts of others. Voting rights of the token holders don’t offer meaningful control over the startup.For example, ICO Head Start uses utility token with a buyback program. To summarizeBefore working on contracts, you should consider their structure and regulation.During contract development, you need to remember not only the typical techniques and programming issues, but also about the specifics of the blockchain. A thorough automated testing, auditing of contracts, as well as their code verification are all helpful and necessary to prevent errors from creeping into the contracts. Finish the development stage no later than 7 days before launch to give yourself enough time to ensure the code is faultless. Whether you are a start-up or business seeking the help of an expert ICO advisor, VironIT will provide you with the means you need to take advantage of the crypto market.Let us know if this article helped you or if you have any doubts. Please leave comments below if you have any questions.
Rolls has been using Cullinan as a code name to refer to the SUV since the project was first announced three years ago, but waffled over whether that name would be carried over to production.Rolls’ decision to lock in the name indicates that the Cullinan is almost ready for its unveiling, but we don’t have a firm date yet.The 3,106-carat gem was dug up in South Africa’s Magaliesberg Mountains in 1905, and named after Thomas Cullinan, who owned the mine where it was found.The diamond was later cut into nine pieces.Rolls likens the solidity and precious nature of the giant diamond to its new SUV, which the company prefers to call a “high-bodied vehicle” in order to curtail references to soccer moms and the like.Our spy shots also indicate that will be an apt description, as the Cullinan appears to be styled to look like a taller version of a traditional Rolls-Royce.
At a time when SUVs and crossovers are the de-factor new car choice for many buyers, none is doing more to elevate the wagon alternative than Volvo.If there’s a chance of ousting bad memories of old family cars and replacing them with a new, improved wagon experience, the 2019 Volvo V60 arguably stands more of a chance than most.Making its debut at the Geneva Motor Show this week, it’s clear that Volvo isn’t counting solely on a good looking car to overturn reluctance to the body style.The shared DNA with the larger V90 is abundant, though the V60 is more than just a mini-me version of that car.There’s a pleasing solidity to the wagon’s stance, that starts with the familiar Volvo grille and the Thor’s hammer LED lights flanking it, and which only builds with the silhouette of the side glass and the way the front fender lines flow into the flare of the rear wheel arches.Inside, the expertise in cabin design that Volvo has demonstrated over the past few years is evident in the V60, too.
If you’ve worked through the amazing selection of games provided by the NES and SNES Classic Editions, you may be in luck: SNK, the legendary arcade game creator behind the likes of Metal Slug and Samurai Shodown, is teasing what looks like its own tiny arcade cabinet.The tall, boxy outline suggests a small arcade cabinet, and the slab in front of it looks a lot like an arcade controller.It wouldn’t be a particularly original creation — there are dozens of tiny arcade cabinets with built-in games, but the truth is none of them is particularly good.They’re novelties, perfectly fun for a laugh, but the hardware – compared with the impressive solidity of real arcade controllers and the NEO-GEO’s itself – just isn’t there.If I had to guess, I’d say this is an arcade cabinet-style console with improved internals, a decent screen to accommodate games newer than 1996, and a separate, perhaps even wireless arcade controller.I could easily be way off, though.
Like it or not (and I don’t), Blockchain is the current hottest tech buzzword.Hundreds of products are being built around distributed ledgers, in fields as diverse as healthcare, finance, and even online gaming.To ensure that more developers can jump on this bandwagon, learning platform Udacity has launched a blockchain nanodegree program, which promises to teach coders everything they need to know to work in this growing niche.The course is spread over two three-month terms, and is focused on practical experience.According to Udacity, the course sees students build their own blockchain, learn about smart contracts using Solidity, the most popular language on Ethereum, and build a blockchain-powered web application.It also allows students to learn from experts in the field.
Alto.io wants to get consumers to start embracing cryptocurrency and blockchain in a bigger way.So the company announced it will support the Hedera Hashgraph platform with its own application that makes commerce possible.Alto.io has created a tool, the Alto Forge, that enables game and app developers to mint non-fungible, fully tradeable crypto items and integrate them into their games.Developers can create storefronts where they can sell the crypto items or hold presales.But with blockchain, Alto.io can ensure that the user truly owns an item, and that item can be unique thanks to the security and transparency of the public distributed ledger.Hedera Hashgraph recently announced it is creating its own version of a blockchain alternative network to speed such commerce.