Topic: [ANN] (QTUM) - A Scalable Smart Contract Platform w/ Proof of Stake - page 13. (Read 525449 times)

This year Qtum is hard at work building offline staking and this blog will present a series covering the design, test, and deployment for offline staking. High-level design for offline staking is underway, and this series will start with a close look at how UTXOs are used in Qtum online staking - the current system. As the design for offline staking is finished, a future blog will reprise the UTXO’s important role in Qtum offline staking.

UTXOs (Unspent Transaction Outputs) are the fundamental unit of value on the blockchain and are carefully managed for staking in Qtum Proof of Stake. Large stakes are split into two UTXOs, smaller stakes can combine many UTXOs. Qtum offline staking will take full advantage of UTXOs.

Read more: https://blog.qtum.org/utxos-in-action-the-road-to-offline-staking-part-1-dc717e0ab91

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

Qtum Core

Qtum core updates normally consist of Qtum Improvement Proposals. These QIPs are generated by both our developers and the community and in some cases requests from enterprise users. Our developers evaluate the impact of each QIP and work on high priority QIPs. All bug fixes and feature enhancements that have been issued to the core project will be listed here.

•    Continue working on offline staking.
•    GitHub Link: https://github.com/qtumproject/qtum/commits/time/offlinestake

Qtum Neutron & x86 Virtual Machine

Qtum Neutron is the infrastructure to support new virtual machines and the first will be the x86 virtual machine allowing smart contract development in C, Rust and other languages. The EVM will continue, but the x86 VM will allow easy creation of smart contracts using safe, well-known, mature languages and tools, and also provide a new state memory model using DeltaDB.

•    Complete the implementation and test of NeutronDataFormat.
•    Github link: https://github.com/qtumproject/qtum-neutron/commit/788741b6b5a92e3c4b623a45047b08a14381ed7f
•    Update x86 documentation on https://x86.qtum.org/

Lightning Network

•    No update for this week

Qtum Explorer & Wallets

The Qtum Explorer is our blockchain explorer that is used for viewing transaction details on the Qtum blockchain. The primary blockchain explorer site is qtum.info. We frequently release updates to both explorer and the web wallet sites. Additionally, you’ll find information regarding the official Qtum Electrum wallet and support/feature updates to hardware wallets or other interesting services/products

Qtum.info Explorer

Qtum.Info, as the official blockchain browser of Qtum, mainly provides information such as network status, transaction records, data indicators of blockchain and visual charts. Qtum users, exchanges, wallets, mining pools, and other commonly used data service tools.

•    Monitor performance of new explorer UI at https://qtum.info/

Electrum Wallet

•    Merge the latest update of BTC Electrum.
•    GitHub Link: https://github.com/qtumproject/qtum-electrum/commit/43c3d5f3b440597c74bea0fa0a93ba74206c882b

Mobile Wallet

The new Android wallet:

•    Google Play: https://play.google.com/store/apps/details?id=org.qtum.newwallet
•    Official website: https://qtumeco.io/wallet

Web Wallet

•    No update for this week

Qtum SDK

QtumJ is BitcoinJ ported to the Qtum blockchain protocol. The BitcoinJ library is a Java implementation of the Bitcoin protocol, which allows it to maintain a wallet and send/receive transactions without needing a local copy of Bitcoin Core. It comes with full documentation and some example apps showing how to use it.

•    Fix all the unstable test cases.
•    Complete the Demo of SDK.
•    Qtumj Github Link: https://github.com/qtumproject/qtumj

Qtum Testing

•    No update for this week

Documentation

•    No update for this week

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

Try out the Qtum Leap Day Quiz at t.me/qtumofficial. Join in to test your knowledge of Leap Day and Qtum, learn something, and have some fun. Happy Leap Day!

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

Coincheck, the crypto exchange based in the Asian nation, currently handles trading, selling, and buying for eleven cryptocurrencies. They announced on Feb. 25 that they were planning to add another to the mix. The cryptocurrency Qtum (QTUM) will soon be the 12th available for trading on the exchange.

Qtum developers released version 0.19.0.1 of the Qtum Core wallet Saturday, February 22, 2020, with numerous updates and features incorporated from the Bitcoin Core wallet of the same version. In this blog, we look at what was updated and what it means.

Read more https://blog.qtum.org/qtum-core-update-v0-19-0-1-whats-new-1316c560d630

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

Qtum Core

Qtum core updates normally consist of Qtum Improvement Proposals. These QIPs are generated by both our developers and the community and in some cases requests from enterprise users. Our developers evaluate the impact of each QIP and work on high priority QIPs. All bug fixes and feature enhancements that have been issued to the core project will be listed here.

Mainnet Ignition v0.19.0 - Upgrade to bitcoin core 0.19.0.1 – Improvements

•    New Qtum Raspbian Release! Changelog:
•    Upgrade to Debian Buster 10.3 release Qtum 0.19.0.1
•    Qtum Raspbian 64bit (Recommended from Raspberry Pi 2 - Raspberry Pi 4)
•    https://raspbianimages.s3.amazonaws.com/2020-02-23-Qtum-Raspbian.zip
•    https://raspbianimages.s3.amazonaws.com/2020-02-23-Qtum-Raspbian-lite.zip
•    "Burning" the Qtum Raspbian image to your SD card: please watch this video tutorial which shows how to download, burn and use your Qtum Raspbian image https://www.youtube.com/watch?v=0W6NlIk7Tgw&t=0s

   

For information of Qtum Hard Fork please refer: https://link.bar/qtumhardfork

Qtum Neutron & x86 Virtual Machine

Qtum Neutron is the infrastructure to support new virtual machines and the first will be the x86 virtual machine allowing smart contract development in C, Rust and other languages. The EVM will continue, but the x86 VM will allow easy creation of smart contracts using safe, well-known, mature languages and tools, and also provide a new state memory model using DeltaDB.

•    NeutronDataFormat implement and test.
•    Update x86 documentation on https://x86.qtum.org/

   

Lightning Network

•    No update for this week

Qtum Explorer & Wallets

The Qtum Explorer is our blockchain explorer that is used for viewing transaction details on the Qtum blockchain. The primary blockchain explorer site is qtum.info. We frequently release updates to both explorer and the web wallet sites. Additionally, you’ll find information regarding the official Qtum Electrum wallet and support/feature updates to hardware wallets or other interesting services/products

Qtum.info Explorer

Qtum.Info, as the official blockchain browser of Qtum, mainly provides information such as network status, transaction records, data indicators of blockchain and visual charts. Qtum users, exchanges, wallets, mining pools, and other commonly used data service tools.

•    Monitor performance of new explorer UI at https://qtum.info/

Electrum Wallet

•    No update for this week

Mobile Wallet

The new Android wallet:  Google Play: https://play.google.com/store/apps/details?id=org.qtum.newwallet Official website: https://qtumeco.io/wallet

Web Wallet

•    No update for this week

Qtum SDK

QtumJ is BitcoinJ ported to the Qtum blockchain protocol. The BitcoinJ library is a Java implementation of the Bitcoin protocol, which allows it to maintain a wallet and send/receive transactions without needing a local copy of Bitcoin Core. It comes with full documentation and some example apps showing how to use it.

•    Continue to fix unstable test cases.
•    Complete the Demo of SDK.
•    Qtumj github link: https://github.com/qtumproject/qtumj

Qtum Testing

•    No update for this week

Documentation

•    No update for this week

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

Active developers

https://github.com/qtumproject/qtum/releases/tag/mainnet-ignition-v0.19.0

https://qtumeco.io/wallet

Qtum 0.19.0.1 Changelog

v0.19.0.1 – Recommended Update: Upgrade to Bitcoin core 0.19.0.1 - Improvements

•     v0.19.0.1 - Mainnet Ignition v0.19.0 - Upgrade to bitcoin core 0.19.0.1 - Bug fixes
•     Upgrade Qtum core to bitcoin core 0.19.0.1.
•     Add utxoRoot to callcontract rpc call transaction receipt.
•     Update Chinese and Korean translations.
•     Update some broken links.

Linux Repositories are also updated (Debian, Ubuntu, CentOS, Archlinux, Mint, Raspbian)

https://docs.qtum.site/en/qtumrepo/

We have available a bootstrap.dat file for faster sync, more details on https://qtumeco.io/wallet

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

A historical review of a Bitcoin vulnerability update and Qtum’s role helping confirm a major flaw in Bitcoin code. Refactoring and code cleanup removed a critical double spending check for Bitcoin (and Qtum). This historical review covers the code changes and discusses Qtum’s role.

Read more: https://blog.qtum.org/historical-review-catching-one-of-bitcoins-major-vulnerabilities-3fb458663177

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

qtum will be available on ATM soon ?

Qtum Core

Qtum core updates normally consist of Qtum Improvement Proposals. These QIPs are generated by both our developers and the community and in some cases requests from enterprise users. Our developers evaluate the impact of each QIP and work on high priority QIPs. All bug fixes and feature enhancements that have been issued to the core project will be listed here.

•    Start the code review and regression test of Qtum 0.19.0.1
•    Preliminary design specification and QIP for Qtum offline staking

For information of Qtum Hard Fork please refer: https://link.bar/qtumhardfork

Qtum Neutron & x86 Virtual Machine

Qtum Neutron is the infrastructure to support new virtual machines and the first will be the x86 virtual machine allowing smart contract development in C, Rust and other languages. The EVM will continue, but the x86 VM will allow easy creation of smart contracts using safe, well-known, mature languages and tools, and also provide a new state memory model using DeltaDB.

•    NeutronDataFormat implement
•    Update x86 documentation on https://x86.qtum.org/

Lightning Network

•    No update for this week

Qtum Explorer & Wallets

The Qtum Explorer is our blockchain explorer that is used for viewing transaction details on the Qtum blockchain. The primary blockchain explorer site is qtum.info. We frequently release updates to both explorer and the web wallet sites. Additionally, you’ll find information regarding the official Qtum Electrum wallet and support/feature updates to hardware wallets or other interesting services/products
Qtum.info Explorer

Qtum.Info, as the official blockchain browser of Qtum, mainly provides information such as network status, transaction records, data indicators of blockchain and visual charts. Qtum users, exchanges, wallets, mining pools, and other commonly used data service tools.

•    Monitor performance of new explorer UI at https://qtum.info/

Electrum Wallet

•    No update for this week

Mobile Wallet

The new Android wallet:

•    Google Play: https://play.google.com/store/apps/details?id=org.qtum.newwallet
•    Official website: https://qtumeco.io/wallet

Web Wallet

•    No update for this week

Qtum SDK

QtumJ is BitcoinJ ported to the Qtum blockchain protocol. The BitcoinJ library is a Java implementation of the Bitcoin protocol, which allows it to maintain a wallet and send/receive transactions without needing a local copy of Bitcoin Core. It comes with full documentation and some example apps showing how to use it.

•    Continue to fix unstable test cases.
•    Qtumj github link: https://github.com/qtumproject/qtumj

Qtum Testing

•    No update for this week

Documentation

•    Update Qtum book in Spanish
•    Post a paper about confidential assets to IACR eprint. https://eprint.iacr.org/2019/1435.pdf

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

wow 

He is listed as a Backer at https://qtum.org/en/team

Is it true that roger ver is an investor in qtum ?

The command-line interfaces (API, CLI, RPC) provide granular low-level control of all the commands for the Qtum node. The GUI wallet (Qtum-Qt) exposes most of every day commands through a graphical interface. But developers and stakers can use these command-line tools for everything else, and we see how.

Read more https://blog.qtum.org/blockchain-developer-acronyms-what-do-they-mean-f395125b5a00

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Qtum Telegram Channel: https://t.me/qtumofficial
Qtum Twitter: https://twitter.com/Qtum
Qtum Facebook: https://www.facebook.com/QtumOfficial
Qtum Reddit: https://www.reddit.com/r/Qtum

You can do a Google search for suggestions about using Electrum with VPNs, which is a common issue with Electrum. Or turn off your VPN when using it.

I’m guessing that countries that filter or restrict the Internet could also cause problems for Electrum. If you live in such a country, you probably know about this.

Decentralized permissionless blockchains would have less problems with VPNs and other restrictions. But think about the Electrum lite wallet architecture connecting to a server somewhere. If traffic to that server is restricted it may not work so well.

I use VPN often , and why national restriction ? Is it possible ? I think the main theory behind creation of cryptocurrencies was get rid of borders and governments who want control your life

Hey Karto,

Linked below is a chart from 4Q 2019 showing Qtum uses. Besides these, some DApp/token projects pivoted or are still hibernating from the crypto winter. Probably the most active QRC20 token project currently is QC, a stable coin based on the Chinese Yuan https://www.quickcash.com/qc

Use Qtum https://i.imgur.com/xMH7TLo.jpg

where can i find information about projects that build on QTUM or partnerships?
i see Algorand for example working with some entities to bring solutions , but i can't see much activity in QTUM
maybe its because its chinese?
in other hand its being listed almost everywhere
im a little confused about this coin, invested a little amount a long time ago and still holding
im -50% thinking about what to do next

Are you using a VPN? Electrum is sensitive to VPN settings and perhaps if there are national restrictions/filtering on the Internet. Some users report success using Tor with Electrum.

(I would send you a message if you allowed them from newbies)