skycoin make his own decision！ he is smart and never listen to the fud.

i will buy some skycoin to show my support, same time i am holding all my Qtum !




Quote from: skycoin on March 16, 2017, 04:54:31 PM

- https://qtum.org

Qtum, will probably replace ethereum because it is simpler and has fewer problems. The UXTO model is much cleaner. They have a lot of previous developers and have already done two previous coins and are the best team I have seen so far.


I won't trust dev that promoting qtum-SCAM.....

I have not looked at qtum's code.

We know the qtum founder and he is one of the largest investors in Skycoin from four years ago, before qtum or any of this. Some of the people around him are legendary scammers, but he is not a scammer.

I think Patricks role in the bitbay situation is exaggerated. I read through the arguments and it just sounds like drama.

Many of the people in the Bitcoin community are sociopaths. They often steal things or cause drama, then immediately blame it or scapegoat it on someone else. They are not even done stealing the money, before they go on campaign of moral indignation against the fall person.

I think Patrick was blamed for Bitbay because his personality makes him an easy victim for sociopaths and the human predators in the bitcoin community. There are people walking around, sizing people up and trying to determine whether they can manipulate someone, setup a scam, steal things and who is going to be gullible or a fall person.

If you knew the people involved, you would understand what the social dynamic is.

>Also how can you be so confident qtum is going to replace ETH based on it's tech when they haven't released code yet?

Ethereum is using an accounts model, like Ripple. Which is anti-blockchain and anti-privacy and very traceable. It is against the philosophy of Bitcoin.

All coins going forward will be on the UXTO model and it is best practice for blockchain. Moving turing complete smart contracts off of accounts model and onto UXTO is extremely important and that is what qtum appears to be doing.

We need to figure out how to do general computation on a UXTO model. Instead of being restrained to the Ripple/Ethereum accounts model.

I think they will get closer to the goal, but only get there part way
- thin client for smart contracts (major limitation for existing system)
- moving smart contracts onto UXTO (major milestone)

I do not know if qtum has succeeded, but they seem to be going in right direction. I talked to one of their technical leads and they were focused on "Getting it working with something we can do now" and then incremental improvement over time. So first implementing the Ethereum virtual machine on top of UXTO, then working out the research problems for a native turing complete UXTO language later.

I do not know if there is a way to full UXTO while still having "gas". I think you will need to get rid of the "gas". In the ethereum model to take full advantage. I do not know if qtum will be able to go far enough in doing that, but is heading in the correct direction.

Ethereum tries to be both a token and a computer.
- we started with pure tokens (Bitcoin)
- then we added a computer to the tokens (Ethereum)
- now we just trying to figure out how to build  pure computer on UXTO
- Then once we have the computer, the tokens or coins just become a program or entity running on this "distributed computer"

Bitcoin, Ethereum, qtum, byteballs, etc are just stepping stones. Towards a final solution. None of these will exist or be relevant in ten years. We are in an age of transition and I am looking at the projects that are getting closer to the goal, in a pure mathematical sense.

Even Skycoin is being ripped up and its foundations constantly rewritten when it is advantageous to do so. Bitcoin is static and relatively unchanging, while Ethereum has been able to get the community to accept constant small changes.

Skycoin is on a punctuated equilibrium model, where we do bug fixes and polishing, then completely rip up and rebuild the foundation as needed, then go back to bug fixes and polishing.

Right now, we are exploring new networking primitives and the advantage of immutable data structures, but are still on blockchain. Putting EVM on UXTO is heading towards immutable data structures from the perspective of computation, while we are heading towards immutable data structures from the path of consensus, networking and simplifying object synchronization protocols.

One of the pilots that is being spun out of that project is the distibuted, peer-to-peer social media platform built upon immutable data structures and peer-to-peer object replication. For this Skycoin chose a public key, cryptographic publisher/subscriber model and DAG immutable object tree. While Ethereum's project chose a Kadmelia DHT block storage model.

Ignoring the individuals and the drama, I am just looking at the "future direction" and who is heading in that direction.

>Also how can you be so confident qtum is going to replace ETH based on it's tech when they haven't released code yet?

I am not confident it will replace Ethereum. At the start, it will be equivalent to ethereum in terms of being able to run the Ethereum Virtual Machine (EVM) on top of qtum with UXTO. Then they will do a native language.

It will depend on the implementation. I do not know if qtum has succeeded, but they seem to be going in right direction.

Similarly, Byteballs may fail or may not exist in ten years, but they are pioneering the first experiments into replacing the Blockchain with a DAG. Which we have been considering for several years now.

Similarly, Bitcoin was the first but people are getting used to the idea that it will not be the final or best cryptocurrency. That it was just the first generation and that we can build better and improve it substantially.

EOS is a scam !

i love you Gleb, your critique are making Qtum project better.

haha   

how do you think about EOS?

they are too greedy?

i think we should remind all the people in crypto word, since they are the biggest greedy project.

and f@@@k... they only have a ERC20 shit tokens.. and they want do an ICO last one year,, and they want to raised 1 billion dollars!!!!!!!!!!!!

how do you think Gleb?

Qtum Newsletter Update:


































BlockchainHack - Moscow


BlockchainHack, which took place this past weekend at the Pavletsky Art Center in Moscow, was the largest blockchain in Russia to date. Over one hundred developers participated in the event and even more came to learn about blockchain technology. The weekend started off with 45 groups which were narrowed down to 25. Developers stayed up all night to win part of $100,000 in prizes. BlockchainHack was made possible by the almost 20 partners that helped organize, fund, and promote the hackathon.






















































In the news




The Qtum Press Release was picked up by two news sites:



















SOURCE: QTUM
PLACE/DATE: SINGAPORE - JUNE 28TH, 2017
Leading-edge technology brings best of blockchain together
 


The Qtum Foundation is pleased to announce the launch of Sparknet, the first public test of its innovative blockchain platform, which combines crucial advantages of Bitcoin, Ethereum’s Virtual Machine and proof-of-stake consensus.

The Qtum (pronounced Quantum) blockchain model was inspired by the rivalry between proponent developers of the world’s most active blockchain communities, said Qtum co-founder Patrick Dai.

“We want to illustrate efficient scalability and compatibility between blockchain technologies,” said Dai. Qtum raised $15.6 million in a crowdsale in March.

The Qtum blockchain operates according to the Unspent Transaction Output (UTXO) model, which ensures consistency in transactions and the traceability of tokens. At the same time, a virtual machine for smart contracts is layered on top of Qtum’s blockchain, which presents to developers a best-of-both-worlds architecture for the construction of decentralized mobile applications and other blockchain-based ventures.

Co-founder Jordan Earls, who leads Qtum’s team of almost two-dozen developers, said the testnet would feature an Ethereum Virtual Machine smart contract implementation along with Qtum’s proof-of-stake protocol.

“I’m ready to get this in the hands of the community and see what everyone’s response to it will be, in particular, what features other developers can come up with,” said Earls.

“The Qtum team continues to execute and build what can be one of the most exciting and innovative railroads in the blockchain ecosystem,” said Matthew Roszak, Qtum Angel investor and co-founder of Bloq.

Six decentralized applications are already being built for the blockchain, Dai said. Among the applications are a peer-to-peer mobile streaming platform and a prediction market.

While these applications are geared to the Chinese market, the Qtum blockchain will appeal to a global audience, accessible to all developers.

“Like many others around the world, I’m eagerly awaiting the launch,” said Roger Ver, a Qtum Angel investor who has been investing in bitcoin startups since the beginning.

To get developers familiar with Qtum, the Foundation is sponsoring a hackathon in Moscow on July 1-2. For more information, visit blockchainhack.ru.

Visit Qtum’s Github page to view the project’s code repository, which will be accessible to the public on the day of the testnet launch.

About Qtum

Qtum is a blockchain application platform. At its core, Qtum combines the advantages of Bitcoin Core, an Account Abstraction Layer that allows for multiple virtual machines, such as the Ethereum Virtual Machine and a proof-of-stake consensus protocol aimed at tackling industry use cases. The Qtum Foundation, headquartered in Singapore, is the decision-making body that drives the project’s development.





Another project builds on the Qtum Blockchain:
















Great updates!

First UTXO based Smart contract platform!

please, stop spam news via pm

This project is getting promote by some spammers I think all active members getting same message on daily basis maybe this is new kind of promotion to keep updated all the forum members what is going on but generally this is just headache.

Daily Test Network Update #3:

Leading up to our June 28th Test Network release, we will be providing daily updates that explain the work that goes on behind the scenes. Yesterday we went over the 5 more points, and today we focus a lot on the Proof-of-Stake portion of the Test Network.





11, Change all output strings Bitcoin -> Qtum, BTC -> QTUM




Replace all instances of bitcoin and BTC with qtum and QTUM (Just the output strings, not the actual class/variable names and not the code comments)




12, Increase Script limits to suitable values


There are a number of limits in vanilla Bitcoin that restrict our usage of smart contracts. These limits should be relaxed:

maximum data push size: 1Mb

maximum stack size: 1Mb

Test for other limits that we run into with large scripts caused by contracts.




13, Consensus/Chain parameters for PoS


Consensus/chain parameters for PoS

The consensus provide parameters that will affect the creation of new blocks in the network.

The PoS limit need to be added in order to determine the initial difficulty for PoS.

The halving interval is 4 years (target) and there will be 7 halving intervals.

Block target is set to 128 seconds.

4 tokens per Block (Approximately 1% inflation per year for 4 years)
2 tokens (Slightly more than .5% inflation per year for 4 years based on 100 million original tokens .5% of 104~ million after 4 years)
1 token
.5 tokens
.25 tokens
.125 tokens
.0625 tokens

The last PoW block need to be defined and set to 5000 for the main net. The reward for PoW block is 20000 coins, the reward for PoS block is 4 coins. The Proof-of-Work blocks will be mined by the Qtum development team.




14 , Update of block/block-header parameters for PoS


The general rule for the header is to keep it as small as possible.

Four parameters are needed for PoS in order to work:

1) Block signature, that is the signature of the whole block, signed by the block creator

2) Block type (Proof Of Work or Proof Of Stake)

3) Previous stake location, need in order to confirm the block validity, mandatory for PoS

4) Staking time, the time when the staking transaction was created, mandatory for PoS


Block signature must be a parameter. The parameter need to be in the header due to the segregated witness which split the block delivery into header and transactions that can be required from any user.
The other parameters can be extracted from the PoS transaction. Whether or not to include those 3 parameters in the header too can be discussed. The block header is downloaded before the whole block, not including those parameters in the header will prevent doing PoS checks to the header before downloading the whole block. Blackcoin download the whole block before the checks and put those parameters into the Block.


15 ,Proof of Work/Stake Kernel Update



The source code for PoW and PoS kernel is kept into the files:

pos.h
pos.cpp
pow.h
pow.cpp

The location of the files is according to master-pos, in Blackcoin the location is kernel.h and kernel.cpp.

We need to decide if we will keep it or use different structure for organization of the code for PoW and PoS kernel.
The version of the stake modifier that will be used is the second version.
Block difficulty, masks, modifiers, time-stamps are all used here, so this is important parts for PoS.

---

Please see the Roadmap below for more information:

---

Please remember that we have an event in Shanghai on the 28th so please RSVP if you plan on attending:

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Qtum will also be sponsoring a Hackathon in Russia, with 8500 QTUM tokens. For more information, please see:

---

Qtum is hiring! If you have experience in Blockchain technology, and can handle working in a changing industry, get in touch with us.

Yes, not all of my accusations hold water, but the ones that do should be concerning. I like the part where fairly new Chinese exchanges whose principals are directly associated with Team Qtum are the only exchanges currently trading the Qtum token, and even have the pre-launch token represented on coinmarketcap.com. How the fuck did they pull that ruse outta their yellow asses?

My other favorite concern is when it was disclosed that Patrick Dai was Steven Dai, but all of Team Qtum stuck it up our asses, adamantly proclaiming that such was a lie, then Patrick came forward and stated that it was in fact true, further expressing that EVERYBODY in his camp, including angel investors, were well aware of such, and further proclaiming that it's common practice for not only a Chinese person to maintain an English name, but change it to another English name when the wind blows.

But none of the above matters because Qtum in a non-profit entity and IS NOT an investment vehicle as they've stated myriad times, hence being chartered in Singapore where Qtum is forbidden to garner more than 5M SGD (less than U$5M) in its coffer during the lifetime as a Singaporean non-profit.