Was ist Qtum

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Contents

Was ist Qtum?

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Qtum is a decentralized blockchain project built on Bitcoin’s UTXO model, with support for Ethereum Virtual Machine based smart contracts, and secured by a proof of stake consensus model. It achieves this through the revolutionary Account Abstraction Layer which allows the EVM to communicate with Qtum’s Bitcoin-like UTXO blockchain. For more general information about Qtum as well as links to join our community, go to https://qtum.org

Welcome to the Qtum Ignition Main Network. This is the main network where the tokens hold value and should be guarded very carefully. If you are testing the network, or developing unstable software on Qtum, we highly recommend using either testnet or regtest mode.

The major features of the Qtum network include:

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  1. Compatibility with the Ethereum Virtual Machine, which allows for compatibility with most existing Solidity based smart contracts. No special solidity compiler is required to deploy your smart contract to Qtum.
  2. A Proof of Stake consensus system which is optimized for Qtum’s contract model. Any user can stake and help to secure the network. There is no voting, master nodes, or minimum amount required. There have been transactions as small as 2 Qtum that have created blocks in the past. Staking from smart contracts is under development.
  3. The Decentralized Governance Protocol is completely implemented and functional, which allows certain network parameters to be modified without a fork or other network disruption. This currently controls parameters like block size, gas prices, etc.
  4. Uses the UTXO transaction model and is compatible with Bitcoin, allowing for existing tooling and workflows to be used with Qtum. This allows for the infamous SPV protocol to be used which is ideal for light wallets on mobile phones and IoT devices.

Note: Qtum Core is considered beta software. We make no warranties or guarantees of its security or stability.

Qtum Documentation and Usage Resources

These are some resources that might be helpful in understanding Qtum.

Basic usage resources:

General Info about Qtum:

  • Smart contract deployment tool
    • https://github.com/qtumproject/solar
  • DApp JavaScript Library
    • https://github.com/qtumproject/qtumjs
  • A toolkit for building qtum light wallets
    • https://github.com/qtumproject/qtumjs-wallet
  • CORS qtumd RPC proxy for DApp
    • https://github.com/qtumproject/qtumportal
  • Docker images for running qtum services
    • https://github.com/qtumproject/qtum-docker
  • qtum.info API that powers the block explorer and the QTUM Web wallet
    • https://github.com/qtumproject/qtuminfo-api#qtuminfo-api-documentation

What is Qtum Core?

Qtum Core is our primary mainnet wallet. It implements a full node and is capable of storing, validating, and distributing all history of the Qtum network. Qtum Core is considered the reference implementation for the Qtum network.

Qtum Core currently implements the following:

  • Sending/Receiving QTUM coins
  • Sending/Receiving QRC20 tokens on the Qtum network
  • Staking and creating blocks for the Qtum network
  • Creating and interacting with smart contracts
  • Running a full node for distributing the blockchain to other users
  • „Prune“ mode, which minimizes disk usage
  • Regtest mode, which enables developers to very quickly build their own private Qtum network for Dapp testing
  • Testnet mode, using the public Qtum Testnet, with faucet available
  • Compatibility with the Bitcoin Core set of RPC commands and APIs
  • Full SegWit capability with p2sh-segwit (legacy) and bech32 (native) addresses

Qtum Core uses a full node model, and thus requires downloading the entire blockchain. If you do not need the entire blockchain, and do not intend on developing smart contracts, it may be more ideal to use an alternative wallet such as one of our light wallets that can be synchronized in a matter of seconds.

Qtum Web Wallet

A browser wallet that supports the Ledger hardware wallet, offline cold wallet, and restoration from mobile wallets.

A light wallet that supports the Ledger and Trezor hardware wallets and is based on the well-known Electrum wallet software.

iOS and Android Wallets

These wallets run on mobile devices and synchronize quickly.

Ledger Chrome Wallet

This light wallet runs in your Chrome browser as a browser extension. This wallet requires a Ledger device to use.

Make sure to check out these resources as well for more information and to keep up to date with all the latest news about Qtum. At least 1 developer is always around, so if you’re developing on Qtum and need help, we’d love to welcome you to our community.

Qtum Smart Contract Limitations

  • EVM smart contracts cannot receive coins from or send coins to any address type other than pay-to-pubkeyhash (starts with Q) addresses. This is due to a limitation in the EVM
  • Contracts are not allowed to create contracts with an initial endowment of coins. The contract must first be created, and then be sent coins in a separate transaction. Humans are also not allowed to create contracts with an initial endowment of coins.
  • Although all of the infrastructure is present, Qtum Core does not currently parse Solidity event data. You must parse this yourself using either searchlogs or -record-log-opcodes features.
  • It is not possible to send a contract coins without also executing the contract. This is also the case of Ethereum. This was promised in earlier discussions and technically does work, but due to lack of time for testing this feature was disabled. We hope to reenable this feature with release of the x86 virtual machine in 2020.
  • In Qtum there can be multiple addresses used to create a proof-of-stake block. However, the EVM can only see the first output using the coinbase operation in Solidity (this address is also the one registered for the continuous staker rewards after 500 blocks).

Building Qtum Core

Validate and Reproduce Binaries

Qtum uses a tool called Gitian to make reproducible builds that can be verified by anyone. Instructions on setting up a Gitian VM and building Qtum are provided in Gitan Building

Build on Ubuntu

This is a quick start script for compiling Qtum on Ubuntu

Build on CentOS

Here is a brief description for compiling Qtum on CentOS, for more details please refer to the specific document

Build on Mac OS

The commands in this guide should be executed in a Terminal application. The built-in one is located in /Applications/Utilities/Terminal.app .

Install the Mac OS command line tools:

When the popup appears, click Install .

NOTE: Building with Qt4 is still supported, however, could result in a broken UI. Building with Qt5 is recommended.

Build Qtum Core

Clone the qtum source code and cd into qtum

Configure and build the headless qtum binaries as well as the GUI (if Qt is found).

You can disable the GUI build by passing –without-gui to configure.

It is recommended to build and run the unit tests:

Then you can either run the command-line daemon using src/qtumd and src/qtum-cli , or you can run the Qt GUI using src/qt/qtum-qt

Qtum is GPLv3 licensed.

The master branch is regularly built and tested, but is not guaranteed to be completely stable. Tags are created regularly to indicate new official, stable release versions of Qtum.

The contribution workflow is described in CONTRIBUTING.md.

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people’s pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren’t disabled in configure) with: make check . Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python, that are run automatically on the build server. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

QTUM Price

QTUM Price Today & History Chart:

QTUM (pronounced as Quantum) is a coin running on the QTUM blockchain known as „foundation“. Qtum is an open source project which combines the benefits of both Bitcoin and Ethereum on a single chain. The peer to peer value transfer is completed using QTUM’s proprietary „Value Transfer Protocol“. To be compatible with Bitcoin’s Improvement Proposals (BIPs), QTUM uses „Incentive Proof of Stake (IPoS)“ smart contract platform. QTUM supports smart apps, Dapps and Go Mobile Strategy. The total QTUMShow more [+] available to the world will be 100 million. QTUM block size is 2Mb and a block is mined after 2 minutes.

QTUM was developed by the Singapore based QTUM foundation. The team consists of developers from both Bitcoin and Ethereum. Presently QTUM team comprises of 30 members including developers, business managers, marketers, and administrators. QTUM project is backed by 10 members including XU Star who is CEO at OKCOIN.

QTUM solves the 4 major issues of the current blockchain technology. The present blockchain (Bitcoin & Ethereum) lacks the interaction with real-world data. Blockchains are incompatible with each other. Consensus mechanisms are inflexible and they lack industry compliance such as Anti-Money Laundering (AML) and Know Your Customers (KYC). QTUM solves these problems by bridging the gaps between Bitcoin and Ethereum. A Master Contract is a new kind of smart contract-compatible with different blockchains. QTUM provides industry-focused consensus protocols. QTUM considers the regulations and integrates the „provide identity modules“.

Was ist Architektur?

Architektur ist nicht alleine Konstruktion: Sie beinhaltet die Suche nach kreativen Lösungen im Spannungsfeld von Konstruktion, Befriedigung von Wohn- und Arbeitsbedürfnissen, ästhetischer Zielsetzungen und der Erhaltung einer lebenswerten bebauten Umwelt.

Architektinnen und Architekten analysieren bestehende Gebäude- und Siedlungsstrukturen. Darauf aufbauend konzipieren sie einen Entwurf, den sie dem Auftraggeber präsentieren. Dabei müssen sie ihre architektonischen Eingriffe gut begründen können. Oft übernehmen sie in der Umsetzungsphase auch Bauleitungsaufgaben.

Entwurf steht im Zentrum

Die Architekturausbildung muss den komplexen Herausforderungen gerecht werden. Deshalb stehen die Lehre des Entwurfs und der Konstruktion verbunden mit wissenschaftlicher Methodik im Zentrum des Studiums.

In den Entwurfsstudios findet die umfangreiche Architekturlehre statt. Alle Aktivitäten sind geprägt von einem profunden Verständnis der Vergangenheit und der Projektion in die Zukunft. Die Studentinnen und Studenten werden dazu angehalten, durch stringentes und visionäres Denken und scharfes Beobachten komplexe Problemstellungen auch unkonventionell zu durchdringen und in fachübergreifenden Auseinandersetzungen zu lösen.

Interdisziplinäre Forschung

Die angegliederten Forschungsinstitute, das Institut für Geschichte und Theorie der Architektur (gta), das Institut für Technik in der Architektur (ITA), das Netzwerk Stadt und Landschaft (NSL) und das Institut für Denkmalpflege und Bauforschung (IDB), sind durch die interdisziplinäre Aufgabenstellung eng mit den Entwurfsstudios verknüpft. Deren Erkenntnisse fliessen auf allen Ebenen in die Architekturlehre ein. Dieses Wissen wird durch die Zusammenarbeit mit anderen Kompetenzbereichen der ETH Zürich wie den Geistes-, Sozial- und Staatswissenschaften sowie den Material-, Umwelt- und Ingenieurwissenschaften ergänzt.

Offene und dynamische Grundhaltung

Alles Wissen und Können ist aber nur dann anwendungs- und entwicklungsfähig, wenn es einer offenen und dynamischen Grundhaltung entspringt. Daher ist es ein zentrales Anliegen der ETH, junge Menschen darauf vorzubereiten, sich in einer sich rasch wandelnden Umwelt zurechtzufinden. Sie fördert in ihnen das Verständnis für ethische und kulturelle Werte, so dass sie nach Abschluss ihres Studiums nicht nur hochqualifizierte Fachleute sind, sondern auch Verantwortung tragende Mitglieder der Gesellschaft.

QTUM в ILS

конвертировать (обменный курс)
Qtum в Israeli Shekel

Qtum (QTUM) Israeli Shekel (ILS) Conversion Table

QTUM (Qtum) ILS (Israeli Shekel)
1 QTUM 4.84658935 ILS
10 QTUM 48.4658935 ILS
100 QTUM 485 ILS
1,000 QTUM 4,847 ILS
10,000 QTUM 48,466 ILS
100,000 QTUM 484,659 ILS
1,000,000 QTUM 4,846,589 ILS
10,000,000 QTUM 48,465,894 ILS
100,000,000 QTUM 484,658,935 ILS

The Qtum dropped by 4.75% on Saturday 11th of April 2020

Let’s see on yesterday’s price changes. QTUM price dropped by 4.75% between min. and max. value. Min. Qtum value was $1.322. Max. QTUM price was $1.385. The average value Qtum price for convert (or exchange rate) during the day was $1.363. The value has dropped. Look at the next daily report.

See the live QTUM price. Control the current rate. Convert amounts to or from ILS and other currencies with this simple calculator.

Convert other units of Qtum (QTUM)

Older news about Qtum

The Qtum dropped by 13.75% on Friday 10th of April 2020

How was the currency exchange rate changed on yesterday? QTUM price dropped by 13.75% between min. and max. value. Max. QTUM price was $1.489. Min. Qtum value was $1.309. The average value Qtum price for convert (or exchange rate) during the day was $1.389. The value has dropped. Of course, one day is not meaningful. So keep on watching.

The Qtum dropped by 3.97% on Thursday 9th of April 2020

Let’s see on yesterday. QTUM price dropped by 3.97% between min. and max. value. Max. QTUM price was $1.520. Min. Qtum value was $1.462. The average value Qtum price for convert (or exchange rate) during the day was $1.489. We see that the value at the end of the day has fallen. Let’s see how it turns out today.

The Qtum increased by 8.78% on Wednesday 8th of April 2020

How was the currency exchange rate changed on yesterday? Min. Qtum value was $1.369. Max. QTUM price was $1.501. The average value Qtum price for convert (or exchange rate) during the day was $1.433. QTUM price increased by 8.78% between min. and max. value. Good work.

The Qtum dropped by 5.2% on Tuesday 7th of April 2020

Let’s take a look at interesting data from yesterday. Min. Qtum value was $1.362. Max. QTUM price was $1.433. The average value Qtum price for convert (or exchange rate) during the day was $1.408. QTUM price dropped by 5.2% between min. and max. value. Let’s see what’s next.

The Qtum increased by 10.03% on Monday 6th of April 2020

Let’s take a look at interesting data from yesterday. The average value Qtum price for convert (or exchange rate) during the day was $1.315. Max. QTUM price was $1.392. Min. Qtum value was $1.252. QTUM price increased by 10.03% between min. and max. value. Certainly it is good news for all.

The Qtum dropped by 3.41% on Sunday 5th of April 2020

Let’s see on yesterday’s price changes. QTUM price dropped by 3.41% between min. and max. value. The average value Qtum price for convert (or exchange rate) during the day was $1.281. Min. Qtum value was $1.258. Max. QTUM price was $1.301. The price was lower at the end of the day. Let’s see what brings today.

The Qtum increased by 2.49% on Saturday 4th of April 2020

How was the currency exchange rate changed on yesterday? Min. Qtum value was $1.255. Max. QTUM price was $1.287. The average value Qtum price for convert (or exchange rate) during the day was $1.270. QTUM price increased by 2.49% between min. and max. value. Good work.

The Qtum increased by 3.12% on Friday 3rd of April 2020

Let’s evaluate yesterday’s price changes. Min. Qtum value was $1.257. Max. QTUM price was $1.297. The average value Qtum price for convert (or exchange rate) during the day was $1.271. QTUM price increased by 3.12% between min. and max. value. Keep it up.

The Qtum increased by 4.62% on Thursday 2nd of April 2020

How was the currency exchange rate changed on yesterday? QTUM price increased by 4.62% between min. and max. value. Max. QTUM price was $1.273. Min. Qtum value was $1.214. The average value Qtum price for convert (or exchange rate) during the day was $1.242. Price is rising. Great.

The Qtum dropped by 4.58% on Wednesday 1st of April 2020

How did the currency on yesterday? Min. Qtum value was $1.179. Max. QTUM price was $1.233. The average value Qtum price for convert (or exchange rate) during the day was $1.205. QTUM price dropped by 4.58% between min. and max. value. Don’t be sad and watch the next day.

The Qtum increased by 2.39% on Tuesday 31st of March 2020

And we have data for yesterday. QTUM price increased by 2.39% between min. and max. value. The average value Qtum price for convert (or exchange rate) during the day was $1.210. Max. QTUM price was $1.227. Min. Qtum value was $1.197. Certainly it is good news for all.

The Qtum increased by 5.95% on Monday 30th of March 2020

And we have data for yesterday. The average value Qtum price for convert (or exchange rate) during the day was $1.189. Min. Qtum value was $1.145. Max. QTUM price was $1.218. QTUM price increased by 5.95% between min. and max. value. Certainly it is good news for all.

The Qtum dropped by 6.07% on Sunday 29th of March 2020

How did the currency on yesterday? QTUM price dropped by 6.07% between min. and max. value. Min. Qtum value was $1.149. Max. QTUM price was $1.219. The average value Qtum price for convert (or exchange rate) during the day was $1.194. Let’s see what’s next.

The Qtum dropped by 9.42% on Saturday 28th of March 2020

Let’s see on yesterday. Max. QTUM price was $1.267. Min. Qtum value was $1.158. The average value Qtum price for convert (or exchange rate) during the day was $1.193. QTUM price dropped by 9.42% between min. and max. value. Let’s see what’s next.

Another conversions

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