[ANN] (QTUM) - A Scalable Smart Contract Platform w/ Proof of Stake

[mummybtc]

This thread is getting more and more interesting daily, with new revelation coming out, Gleb Gamow  independent investigation on this project is quite rewarding while Qtum team has decided to mishandled every issues been raised with convincing evidence to proof otherwise. Onus is on Qtum team to proof to people this project is not a scam

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[Gleb Gamow]

Make sure to tell BTER and claim your 720 BTC reward

Let somebody else claim it. I'll just provide the info. Hell, it wouldn't surprise me to learnt that cocksuckeroverflow is doing just that as we speak.

Nah I won't steal your work glebby, go ahead you deserve a good retirement bounty! 

So, you and Earlz don't have any other comments as to why Qtum's BWA was originally funded via Tilepay's bitcoin wallet addresses, then all the funds moved to Star Xu's OKCoin prior to Star Xu seeding Qtum? Maybe the Markov Twins can shed some light on the subject, eh? Or maybe Neil Mahi can weigh-in under his Neil Sakr user name? Or maybe if one of the elephants in the room is named Horton, then he, too, could comment?

"Patrick, you're the bestest!"

This thread is getting more and more interesting daily, with new revelation coming out, Gleb Gamow  independent investigation on this project is quite rewarding while Qtum team has decided to mishandled every issues been raised with convincing evidence to proof otherwise. Onus is on Qtum team to proof to people this project is not a scam

Please, don't confuse cocksuckeroverflow with such big words like onus.

[stackoverflow]

This thread is getting more and more interesting daily, with new revelation coming out, Gleb Gamow  independent investigation on this project is quite rewarding while Qtum team has decided to mishandled every issues been raised with convincing evidence to proof otherwise. Onus is on Qtum team to proof to people this project is not a scam

You mean this guy?

Video link

Maybe Qtum team should invite him to their headquarters, so he'll have a chance to make another apology video 

[Qtum]

Press Update:

International Business Times publishes a Qtum Press Release, discussing the new whitepaper, and our involvement with a top 4 auditing firm.

http://www.ibtimes.co.uk/qtum-blockchain-releases-new-white-paper-mobile-apps-ties-pwc-asia-1610127

 By Ian Allison
March 7, 2017 09:04 GMT


Qtum, the UTXO smart contracts blockchain, has released a new white paper and also announced that it is working with PwC in Asia. Qtum (pronounced Quantum) uses the Unspent transaction Output (UTXO) design of Bitcoin and connects that with the Ethereum Virtual Machine (EVM) which stores and executes business rules as code on the blockchain.

Qtum's co-founder Patrick Dei says he has addressed the complexity involved in combining an unspent transactions model with a virtual machine by creating the Qtum Account Abstraction Layer (AAL). Qtum's proof of stake consensus system includes a kind of "adapter" which can build the state of each UTXO and through the new layer, and adapt it so the EVM can process the UTXO-based contract.
More from IBTimes UK


The paper titled, Smart-Contract Value-Transfer Protocols on a Distributed Mobile Application Platform, was authored by the co-founders of the Qtum project, Patrick Dai, Neil Mahi, Jordan Earls and the project's scientific adviser Dr Alex Norta.

Qtum's UTXO-based blockchain supports the SPV (Simple Payment Verification) protocol from launch, which will allow "lite" wallets, running on mobile devices, to engage natively with decentralised applications and smart contracts for the first time. This feature also allows IoT devices to be secured and operated with smart contracts, said a statement.

Lite wallets allow users to interact with the network without having to download and sync with the entire blockchain, enabling low bandwidth/storage access to smart contracts. With SPV support, transactions can be signed by the device itself rather than having to rely on third-party services to relay messages.

Dai said: "Getting smart contracts to work on smartphones and tablets heralds a new age in the field of decentralised computation. With about half of all internet traffic being generated by mobile devices, every real-world use case for decentralised applications would massively benefit from mobile support – especially if we're taking the tendencies of developing markets into account."

Norta said: "This white paper fills the gap in the state of the art by presenting the Qtum smart-contract framework that aims for socio technical application suitability, the adoption of formal-semantics language expressiveness, and the provision of smart-contract template libraries for rapid best-practice industry deployment."

The white paper also addresses concerns raised by the Ethereum DAO attack, noted Dai, by allowing contract collaboration, negotiation, review, and tracking. A Smart contract life cycle management system enables contracts to be more like living documents and when situations changes, (i.e. terms are broken in the contract, such as a delay) parties can determine if they want to amend or close the contract.

Earls added: "Qtum aims to revolutionise business processes and the way that businesses interact with their customers by making smart contract technology mobile and practical. The SPV protocol allows smart contracts to move from servers and laptops, into IoT and mobile devices."

CY Cheung, fintech and cybersecurity partner of PwC China, posted a blog about the agreement with Qtum, and added: "PwC sees enormous potential for blockchain to revolutionise business practices as we know them, and the firm has made great efforts in developing strategic and technical capabilities to adapt existing products and services for the new technology. We are excited to get involved in the era of innovation and help companies capture the opportunities and benefits brought by the new technology. Working with the Qtum Foundation aligns with our goal."

[stackoverflow]

Press Update:

International Business Times publishes a Qtum Press Release, discussing the new whitepaper, and our involvement with a top 4 auditing firm.

http://www.ibtimes.co.uk/qtum-blockchain-releases-new-white-paper-mobile-apps-ties-pwc-asia-1610127

 By Ian Allison
March 7, 2017 09:04 GMT


Qtum, the UTXO smart contracts blockchain, has released a new white paper and also announced that it is working with PwC in Asia. Qtum (pronounced Quantum) uses the Unspent transaction Output (UTXO) design of Bitcoin and connects that with the Ethereum Virtual Machine (EVM) which stores and executes business rules as code on the blockchain.

Qtum's co-founder Patrick Dei says he has addressed the complexity involved in combining an unspent transactions model with a virtual machine by creating the Qtum Account Abstraction Layer (AAL). Qtum's proof of stake consensus system includes a kind of "adapter" which can build the state of each UTXO and through the new layer, and adapt it so the EVM can process the UTXO-based contract.
More from IBTimes UK


The paper titled, Smart-Contract Value-Transfer Protocols on a Distributed Mobile Application Platform, was authored by the co-founders of the Qtum project, Patrick Dai, Neil Mahi, Jordan Earls and the project's scientific adviser Dr Alex Norta.

Qtum's UTXO-based blockchain supports the SPV (Simple Payment Verification) protocol from launch, which will allow "lite" wallets, running on mobile devices, to engage natively with decentralised applications and smart contracts for the first time. This feature also allows IoT devices to be secured and operated with smart contracts, said a statement.

Lite wallets allow users to interact with the network without having to download and sync with the entire blockchain, enabling low bandwidth/storage access to smart contracts. With SPV support, transactions can be signed by the device itself rather than having to rely on third-party services to relay messages.

Dai said: "Getting smart contracts to work on smartphones and tablets heralds a new age in the field of decentralised computation. With about half of all internet traffic being generated by mobile devices, every real-world use case for decentralised applications would massively benefit from mobile support – especially if we're taking the tendencies of developing markets into account."

Norta said: "This white paper fills the gap in the state of the art by presenting the Qtum smart-contract framework that aims for socio technical application suitability, the adoption of formal-semantics language expressiveness, and the provision of smart-contract template libraries for rapid best-practice industry deployment."

The white paper also addresses concerns raised by the Ethereum DAO attack, noted Dai, by allowing contract collaboration, negotiation, review, and tracking. A Smart contract life cycle management system enables contracts to be more like living documents and when situations changes, (i.e. terms are broken in the contract, such as a delay) parties can determine if they want to amend or close the contract.

Earls added: "Qtum aims to revolutionise business processes and the way that businesses interact with their customers by making smart contract technology mobile and practical. The SPV protocol allows smart contracts to move from servers and laptops, into IoT and mobile devices."

CY Cheung, fintech and cybersecurity partner of PwC China, posted a blog about the agreement with Qtum, and added: "PwC sees enormous potential for blockchain to revolutionise business practices as we know them, and the firm has made great efforts in developing strategic and technical capabilities to adapt existing products and services for the new technology. We are excited to get involved in the era of innovation and help companies capture the opportunities and benefits brought by the new technology. Working with the Qtum Foundation aligns with our goal."

Now that's some good press!

[Gleb Gamow]

http://www.btc12.com/thread-382.htm

Shuai Chu is one of the early adopters among the Chinese community. He graduated from Chinese Academy of Sciences with doctoral degree in computer. He started research blockchain in 2011 and quit Alibaba to start his own business. With various involvement in blockchain projects, he accumulated rich experience in blockchain development and put them into a technology document How to build your own blockchain from 0 to 1.

Since Patrick Dai aka Steven Dai aka Shuai Shu aka Shuai Chu is an early (PUN INTENDED) adopter of Bitcoin-cum-blockchain technology, please enlighten us as to what user name he penned under on this forum.

Great! Now it's Dr. Dai. When will this madness end? While you're scratching your elephant's balls in figuring out what Dr. Dai's user name was on this forum back in 2011, please enlighten us as to how Dr. Dai earned his PHD from the Chinese Academy of Sciences, given that ...

https://www.linkedin.com/in/shuai-chu-39278a108/

http://www.ibtimes.co.uk/qtum-blockchain-releases-new-white-paper-mobile-apps-ties-pwc-asia-1610127

Now that's some good press!

Try not interrupting me, cocksuckeroverflow, while I'm penning Qtum's web of deceit.

[earlz]

On the front page of the Fintech section of IBTimes to boot!

[jujugoboom]

I read your whitepaper, the QTUM foundation is very promising organization, do you have escrow in this project? 3 co-founders have the same amount of shares or Patrick is largest shareholder?

[Gleb Gamow]

"Blockchain technology has a wide range of potential applications,” said BitSE CEO Qian Dejun. “More clients will focus on blockchain and start to adopt it in their industries in the near future. PwC has extensive expertise and advisory experience, which will help us to promote these new solutions in the market."

Remember Black Arrow?: http://www.blackarrowsoftware.com/download/chengdu_contract.pdf

[earlz]

I read your whitepaper, the QTUM foundation is very promising organization, do you have escrow in this project? 3 co-founders have the same amount of shares or Patrick is largest shareholder?

The exact number of keys is not yet determined, but the 3 co-founders (me, Patrick, Neil) will own a key (so at least 2 of 3, but we are discussing 3 of 4)

[Gleb Gamow]

I read your whitepaper, the QTUM foundation is very promising organization, do you have escrow in this project? 3 co-founders have the same amount of shares or Patrick is largest shareholder?

The exact number of keys is not yet determined, but the 3 co-founders (me, Patrick, Neil) will own a key (so at least 2 of 3, but we are discussing 3 of 4)

Excellent! Now that's it's established that you're a co-founder of Qtum, all questions and concerns can be provided by you.

[earlz]

I'd think a Sherlock like you can find trivial details like this when they're on our OP and website

[Gleb Gamow]

I'd think a Sherlock like you can find trivial details like this when they're on our OP and website

Note to self: Co-founders of entities looking to garner $10M in ICO funding are allowed to call posters in their threads "Sherlock" in lieu of addressing serious accusations. That said, I'll try again.

Earlz, co-founder of Qtum, please explain why all the initial bitcoins that were transferred to Qtum's bitcoin wallet address stemmed from addresses formally used by TileCoin, when Patrick Dai was with them, via BTER, once hacked under Patrick's associates' watch, then later most were transferred to Star Xu's OKCoin prior to Star Xu acting as one of the Angel seed investors in funding Qtum?

TBC, I have every intention of bumping this thread with such questions each and every time cocksuckeroverflow posts his bullshit.

FWIW, I used to be a professional bear wrestler:



Yes, that's a 700 pound bear named Ginger.

[shillfudder]

For many who are ignoring the obvious shadiness, investing in QTUM is like...



LOL  Can't help yourselves, QTUM is so hot!

Give it up, Gleb! QTUM is happening! Sheeps will be slaughtered! They have the finances to drown out your voice. Let's just pump and dump this shit.

[Gleb Gamow]

I just realized what I'm doin' w'ong. My questions r 2 complex. I must use smaller sentences.

Earlz, see 2 pics? Why different info?

https://www.itjuzi.com/person/29071



https://www.linkedin.com/in/shuai-chu-39278a108/

[seven.71]

For many who are ignoring the obvious shadiness, investing in QTUM is like...



LOL  Can't help yourselves, QTUM is so hot!

Give it up, Gleb! QTUM is happening! Sheeps will be slaughtered! They have the finances to drown out your voice. Let's just pump and dump this shit.

continue @gleb
I support you so that scamer can not do this kind of fraudonly a fool would invest in this project

dai....dai...dai....dai....daiii....

[Gleb Gamow]

Here's something interesting:

Chandler Jun / Qian Dejun: https://www.itjuzi.com/person/29069 ~ Shanghai Pudong New Area
Lu Yang: https://www.itjuzi.com/person/29070 ~ Shanghai Pudong New Area
Shuai early / Shuai Shu / Shuai Chu / Patrick Dai: https://www.itjuzi.com/person/29071 ~ Shanghai Pudong New Area

[earlz]

It seems you found a news article translated from Chinese to English that apparently didn't keep that nuance. That makes Patrick a scammer... how? Patrick has been pretty public about being a PhD drop out, though I believe he wants to go back to school sometime later when he's less busy to finish his PhD.

[Qtum]

(from: https://qtum.org/en/lm/account-abstraction-layer-overview)

Account Abstraction Layer Overview

Building on bitcoins reliable and proven-to-deliver blockchain, Qtum stacks its Account Abstraction Layer, allowing the Bitcoin Core 0.13 blockchain to seamlessly interact with the Ethereum Virtual Machine (EVM). With this innovation it is now possible to execute smart contracts and run decentralized applications, simply and securely, in environments that were previously out of reach for Ethereum, combining the endless possibilities provided by smart contracts with the stability and maturity of the bitcoin ecosystem.

Until now, attempts to implement smart contract solutions on top of the bitcoin blockchain have had issues, been lackluster, or failed to break into the mainstream business market. This is primarily due to the fact that the bitcoin blockchain employs an Unspent Transaction Output (UTXO) scheme to associate coins with addresses, rather than the easier to understand, but otherwise problematic, account-based model used by Ethereum.

An account based model works pretty much the way one would imagine:  if Alice has 10 tokens, and sends 5 of them to Bob, who has zero tokens; 5 tokens are simply subtracted from Alice’s balance and added to Bob’s, who now owns 5 coins.  On a UTXO blockchain, however, Alice does not directly hold 10 tokens, but a series of outputs, which are collections of coins resulting from previous transactions.

In such a model, instead of owning 10 tokens, Alice would, for example, hold 3 outputs: (a) consisting of 6 coins, (b) consisting of 2 coins, and (c) consisting of another 2 coins. In this scenario Alice couldn’t simply send 5 coins to Bob, but instead she (or her wallet, for that matter) would have to pick the best-suited output and receive “change” in return (a process called coin picking). In our example this means that Alice would transfer output (a), consisting of 6 coins, and receive 1 coin back as “change”. This “change” is what is called the Unspent Transaction Output, or UTXO. After the transaction Alice would still hold 3 outputs, this time (a) consisting of 1, while (b) and (c) remain 2.

Employing such a seemingly complex bookkeeping scheme allows the Bitcoin blockchain to support Simple Payment Verifications or SPVs. The SPV protocol enables the support of light wallets, which are wallets that can interact with the Bitcoin network in a decentralized and trustless manner, without having to download the entire Bitcoin blockchain. This property is immensely useful for mobile applications or in any low bandwidth/storage environment.

Until now, Ethereum smart contracts couldn't execute in such environments exactly because Ethereum’s account based blockchain does not provide a SPV analog. To solve this, Qtum builds its decentralized application platform on the proven-to-deliver Bitcoin blockchain and introduces the Qtum Account Abstract Layer, which serves as a communication layer between the Bitcoin Core 0.13 protocol and the EVM.

To achieve this, Qtum has extended the Bitcoin 'Script' language, adding 3 ‘opcodes’ so that it functions as a vehicle to transport code to the EVM, while adding special processing conditions, executing these EVM-using transactions immediately when added to the blockchain - allowing the EVM to operate within a UTXO environment.

In order to relieve Qtum smart contracts from the need to perform coin picking for every transaction, Qtum comes coded with an automated, generic coin picking algorithm which allows contracts to ignore the UTXO mode of operation, while functioning normally, as if deployed in an account-based environment. This method is what enables Qtum to be compatible with pre-existing Ethereum smart contracts, allowing them to be executed on Qtum with little to no change to their code.

For more information about Qtum’s architecture in general, please read this post or review our  Technical Whitepaper.   

https://qtum.org/ethereum-contracts-on-utxo/

 

https://qtum.org/wp-content/uploads/2017/01/Qtum-technical-white-paper-draft-version.pdf

[BTCspace]

http://edcon.io/download.html

22 Qtum：  How Qtum make EVM run on UTXO Model

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http://edcon.io/download.html

any comments on this speech ?
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how Qtum be compatible with Ethereum platform?