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    Author Topic: [ANN] (QTUM) - A Scalable Smart Contract Platform w/ Proof of Stake  (Read 525844 times)
    This is a self-moderated topic. If you do not want to be moderated by the person who started this topic, create a new topic. (36 posts by 1+ user deleted.)

    • kamaljit.singh
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    May 11, 2018, 02:38:19 AM
     #5761
    My crazy project and crazy hair @Space__Chain @earlzdotnet @QtumOfficial

  • cybterpunk
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    May 11, 2018, 09:03:21 AM
     #5762
    why people are still buying neo with 7 nodes ?

    1 nodes worth 1 billion dollars?

    that's the reason why neo marketcap is higher?

  • Theodorre
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    May 12, 2018, 03:54:56 AM
     #5763
    The core wallets are full nodes that sync the entire blockchain and can do staking. The Web wallet is a lightweight wallet (like MyEtherwallet) that rely on a server connection to connect to the blockchain. The Web wallet is does not sync the entire blockchain, it is fast and easy but can not do staking. Does that help?

  • Sjacmur
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    May 12, 2018, 05:35:05 AM
     #5764
    Quote from: Qtum on May 04, 2018, 10:03:31 AM
    Quote from: DragonETH on May 03, 2018, 04:56:30 AM
    where you can find information about deploying a full Noda for this project Qtum. Which  operating systems full Noda supports  and that physical forces are required when running.
    (...)You don't require any Qtum to run a node, you simply need to allow incoming connection to relay transactions.(...)

    Hi I have question about this. Qtum have masternodes ? and why is possible make empty node without coins, what reward is for make Node even not have coins ? Or exist any better version Node with X amount Qtum to take reward from transaction fee like any normal masternodes in other coins like dash or any other with masternodes, and + reward from PoS too ? I like Masternodes but dont know and dont read about qtum before sorry.

  • linhna2712
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    May 12, 2018, 05:52:37 AM
     #5765
    I'm thinking to get some QTUM. Looks promising

  • yewq888
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    May 12, 2018, 10:13:34 AM
     #5766
    The QTUM team is visionary in the area chain application platform, and they begin to do this when others see other aspects. So far, all progress and development have been well done.

  • trangvii111
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    May 12, 2018, 10:19:41 AM
     #5767
    Very nice and unique project. I can't wait to see its implementation soon. Good luck great team

  • vaniril
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    May 12, 2018, 10:20:40 AM
     #5768
    Interessting project. Maybe i will invest some coins here and get more profit in the future  Grin

  • LoveKamil
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    May 12, 2018, 05:33:34 PM
     #5769
    Hello Everyone! What is Qtum? what are its features?that can be isolated from the technical features!?

  • Sam San
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    May 13, 2018, 06:25:01 AM
     #5770
    Quote from: LoveKamil on May 12, 2018, 05:33:34 PM
    Hello Everyone! What is Qtum? what are its features?that can be isolated from the technical features!?
    after the appearance of quantum computers all blockchain systems fall under the risk of losing primary keys, that's the main technical complexity of blockchain systems of the future.
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  • Nadia_l
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    May 13, 2018, 07:20:46 PM
     #5771
    Quote from: filsid on May 09, 2018, 05:50:26 AM
    Qtum one step closer to mass adoption after point-of-sale deal with Pundi X



    TUM Tokens can be used to pay for goods in shops across the world
    Qtum, the first successful Proof-of-Stake blockchain, is a big step closer to mass adoption after striking a deal that will allow people to use QTUM tokens to pay for goods in shops across the world.
    Qtum will soon be a household name, appearing on the first 4,000 point-of-sale devices that are about to be shipped across the world by Pundi X – a cryptocurrency solutions provider for retail stores.
    The Point-Of-Sale devices will be delivered to retailers in countries including Korea, Japan, Singapore and Switzerland.
    “Pundi X has the potential to deliver the final nudge that opens the floodgates to mass adoption of QTUM,” Said Patrick Dai, CEO and founder of Qtum.
    “It’s time that we offered individuals the option to pick between fiat and crypto when ordering a coffee or purchasing goods. It’s fantastic to be working with Pundi X to give consumers this choice.”

    The Pundi X device is a game-changer in retail, enabling both merchants and consumers to do cryptocurrency-to-fiat or fiat-to-cryptocurrency transactions easily – the devices interface directly with the blockchain. Few solutions even come close to mirroring the potential that such a device has in the retail arena for pushing mainstream adoption.

    The Pundi X project is the successor to Pundi-Pundi, one of Indonesia’s most prominent innovators in cashless QR code payments.
    Qtum already has over 7,000 nodes across the planet, making it one of the world’s most decentralized blockchains.

    https://www.chipin.com/qtum-mass-adoption-after-point-of-sale-deal-with-pundi-x/

    A huge deal for both! PundiX nowadays is one of the most promising projects that aim to make mass adoption of crypto payments, providing their POS terminals directly to the merchants. Will look closer to the next development of their cooperation as it could be one of the key factors of mass adoption of crypto in worldwide borders providing of real-life usage of it in the nearest future.

  • illanz
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    May 15, 2018, 09:30:12 AM
     #5772
    Hi All

    I'm staking 1000 coins since December 2017. I've received 6 coins at the end of January then 6 other coins at the end of February.
     
    But since the end of February I have no other payment. I have updated my pc wallet as soon as the v0.14.16 has been released...

    My wallet is unlocked for staking and the reward period is 26 days.

    Any clue or help about the missing rewards since 3 months??

    Thank you

  • mkkalam
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    May 18, 2018, 10:03:09 AM
     #5773
    What is the origin and meaning of the name "QTUM"? How is it pronounced?

  • cybterpunk
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    May 19, 2018, 04:47:04 AM
     #5774
    Quote from: mkkalam on May 18, 2018, 10:03:09 AM
    What is the origin and meaning of the name "QTUM"? How is it pronounced?

    Quantum

  • cybterpunk
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    May 19, 2018, 04:47:20 AM
     #5775
    seems bitcointalk is dead now?

  • Qtum (OP)
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    May 19, 2018, 07:02:37 AM
     #5776
    Qtum Forges Ahead with Development of Its x86 Virtual Machine and Expanded Network



    Qtum is on the move with the announcement of a partnership with Baofeng to begin running 50,000 full Qtum nodes and an upcoming x86 VM to support multiple languages for smart contracts.





    https://bitcoinmagazine.com/articles/qtum-forges-ahead-development-its-x86-virtual-machine-and-expanded-network/ (From January 2018)












    Qtum Forges Ahead with Development of Its x86 Virtual Machine and Expanded Network

             Qtum Forges Ahead with Development of Its x86 Virtual Machine and Expanded Network
            
    Qtum is on the move with the announcement of a partnership with Baofeng to begin running 50,000 full Qtum nodes and an upcoming x86 VM to support multiple languages for smart contracts.

    Qtum is a hybrid of Bitcoin and Ethereum that is based on proof-of-stake consensus instead of proof of work, and is compatible with existing Ethereum contracts as well as Bitcoin gateways. Supporting the Ethereum Virtual Machine (EVM) wasn’t enough for Qtum co-founder Jordan Earls, who has been working on an x86 Virtual Machine for the Qtum system.

    Earls comments that a great reason to build a x86 VM is to add more programming language support for smart contracts, his favorite being Rust. The overall list of objectives is much bigger though:

    Programming Language Support
    Standard Library
    Optimized Gas Model
    Unlock the full power of the Account Abstraction Layer (AAL)
    New possibilities for smart contracts
    First-Class Oracles
    Blockchain Analysis
    Alternative Data Storage
    Explicit Dependency Trees
    Bitcoin Magazine spoke with Earls with some more in depth questions about some of those items:


    Bitcoin Magazine: What proof of concept or scalability testing have you done for the VM?

    Jordan Earls: We have a very rough proof of concept we completed a few months ago where we integrated a prototype x86 VM into the Qtum network. This success is what led us to pursue this plan. We are confident that the x86 VM will be more scalable than the EVM, but we are thus far unsure how much. We are designing the VM and all of its APIs and other aspects to be scalable. We are making a big shift in the smart contract world where we actually reward smart-contract developers (in the form of cheaper gas costs) for limiting the features their smart contract has access to, and we are confident it will be faster than current EVM technology.  

    Bitcoin Magazine    : What are you doing to address the problem with x86 programming in general, where they assume near infinite memory and CPU time being available?

    Jordan Earls: We think smart contract development crossed with this x86 paradigm will resemble something similar to real-time or embedded programming, where there are various constraints that developers must always be optimizing for.  

    We foresee the same kind of design optimizations happening in the smart contract world as happen in the embedded world, and, for the first time, Qtum's blockchain will allow for these small optimizations to be directly rewarded for all users of the smart contract.

    We know these optimizations are not cheap for smart contract developers to spend their time on, so we need to reward developers for taking such steps to keep the Qtum blockchain running smoothly and efficiently.

    Bitcoin Magazine: What are some of the advantages with the Standard Library that will help keep smart contract code tight?

    Jordan Earls: Currently in Ethereum, if you want to do a simple operation, like testing if two pieces of text are equal, you need to write your own code to do it.

    This is a problem for a number of reasons: Developers in a secure context should rely on existing code that's been tested and verified, if possible. A naive implementation of this function will be slow, but a more complex and optimized implementation could have security problems. Deploying this code with your contract means another 100 bytes or so of wasted code that every node in the ecosystem now has to worry about.

    Qtum will provide a standard library of functions that contract developers can rely on to have reasonable gas costs, secure and validated implementation and an easy to use interface. This means less bloat on the blockchain, easier to write and understand smart contracts and even a faster blockchain (since these functions can be optimized with native code).

    Bitcoin Magazine: What about executable size? These x86 programs tend to be quite large.

    Jordan Earls: This is true but also misleading. If I write a C program that just prints "hello world," about 8kB of that is going to just be the number "0." This is because x86 processors (as well as many others including ARM) benefit from a thing called "alignment." The important thing for Qtum is that the wasted bytes doing alignment can be discarded without performance impact. This immediately brings down that C program build to ~1-2kB.

    We can reduce even more because we don't need all the baggage required by a standard program for Windows: We have our own "operating system" for smart contracts, so only a dozen or so bytes of actual setup code is wasted.

    We have done some actual physical tests with these configurations to compare what an x86 smart contract might look like compared to an EVM smart contract. Our findings indicate that x86 programs are around 10–20 percent smaller than their EVM equivalent and, in many cases, significantly more so. And this was done without the standard library concept that was discussed above. We are not worried about getting usable executable sizes from x86 programs.

    Bitcoin Magazine: So the language compiler has to be modified to support the VM? What kinds of modifications?

    Jordan Earls: Only minor modifications need to be made. The language compilers do support our x86 VM already, but the Qtum smart contract environment is different from a traditional operating system like Windows or Linux. So, basically, the only big modification we have to make is to tell the language how to communicate with our smart-contract operating system.

    Bitcoin Magazine: Is QTUM going to provide language packages or libraries to support the VM so people can just use those?

    Jordan Earls: C and C++ will be the first languages we support "out of the box" because they tend to be the easiest due to the way they are designed. We also plan to support Rust. Go should easily be possible. For interpreted languages like Python and Perl, it becomes more complex and we must do research to ensure that they can be supported in an efficient and secure manner.

    Bitcoin Magazine: Is this going to impact the development of your eSML smart contract language?

    Jordan Earls: We are continuing to research the eSML approach and will decide at a later point if it is still a requirement to achieve our goals. We prefer to not do more work if it won't have a tangible benefit to our ecosystem.


    Helping to support all this growth is the partnership announced on January 4, 2018, with Chinese video portal giant, Baofeng. With the help of Baofeng, the Qtum network will be boosted to 50,000 full network nodes, making it the most decentralized blockchain platform with the largest number of nodes with more than Bitcoin and Ethereum combined. The increased size of the Qtum system should provide for improved security, stability and speed, all of which will provide a solid base for the upcoming x86 VM later this year.

    Earls projects that the x86 will be integrated into the Qtum main network in Q3 of 2018 but hopes to have a prototype to test with before Q2.
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  • Petersha
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    May 19, 2018, 07:42:09 AM
     #5777
    Exclusive Interview with Qtum developer Xu Xiaolong, a former TENCENT employee.

    https://www.chipin.com/exclusive-interview-with-stephen-xu/

  • truxton
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    May 20, 2018, 10:24:37 AM
     #5778
    QTUM is now ready for cross-chain dapps with the Blocknet Protocol!





    Now that QTUM is compatible with the Blocknet Protocol, it can be used in cross-blockchain dapps and traded on beta Block DX!

    You can read more about Blocknet, the Blocknet Protocol, and Block DX here:

    https://blocknet.co

    https://sites.google.com/view/blocknet/directory

    To get started with trading on Block DX, follow this setup guide: https://docs.google.com/document/d/1ciwLFSXwv6CXd3QEvVW88lHXo9CSIlweYOoSbDHkies/preview

    The setup is in the process of being automated/abstracted so it's much easier and streamlined to use for beginners. In addition to that, in July we are planning to release SPV support which will allow for the creation of litewallets so whole blockchains will not need to be downloaded.

  • kamaljit.singh
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    May 20, 2018, 04:04:56 PM
     #5779
    Qtum Dapp, @govevue, ranks among "The Coolest Blockchain Startups at Consensus"

  • elenora
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    May 21, 2018, 06:34:48 AM
     #5780



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