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401  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][Qtum]UTXO based POS Smart Contract Platform | Crowdsale March 2017 on: February 05, 2017, 02:36:56 PM
I saw the testnet update was released yesterday, I visited the link but I don't understand the codes because I'm not a technical person, can someone just summarised the progress achieved on the testnet for me

dev team is merging to POS version now, earlier the POW version is working (see updates 1 on qtum.org website)

after the merge finished, Qtum will be the first POS smart contract platform.(earlier than ethereum and compatible with bitcoin UTXO model.)

All bitcoin forks(UTXO model based ) can use Qtum source code to have smart contract functions.

 Smiley

402  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][XEL] Elastic Project - The Decentralized Supercomputer on: February 05, 2017, 02:30:32 PM
Hi Community,

I am writing you to give you a short overview of what we have done so far, why we have done it, and what (from our point of view) still has to be done - and when. I have been moving to a new town in the last days, so

First of all, we had a last-minute idea - the idea of introducing so called super nodes. The reasons were:

1. Since earlier everyone had to verify work, we were very limited: we had very strict constraints regarding the complexity and memory requirement of work packages, simply due to the reason that the weakest node still has to be able to verify everything in a reasonable amount of time. Otherwise, netsplits or node shootdowns would be possible with complex long running tasks. With super nodes we are more flexible: we can set strict requirements that a super node's hardware has to meet and so can allow programs that run longer and use more memory.
Supernodes are basically nodes that do the verification and have no incentive to cheat due to a huge deposit. Contrary to other "well hyped solutions" we do not rely on trust at all ... all calculations and decisions that the super nodes perform can be publicly verified by anyone. For example by the so called guard nodes. These are nodes that randomly cross-check a small fraction of jobs. If they detect that a super node lied, its deposit gets forfeited.

2. Also, earlier a bug in the implementation (causing an infinite loop for example) could halt the whole network since every node is execution the task. Now, the network is safe from this. Also, the super node software will have emergency stop mechanisms that would prevent bugs to crash anything. Again, this design has several benefits here. It's better if one supernode freezes for 15 seconds before it detects the anomaly than if every node in the network freezes for 15 seconds.

3. Also, and this is a PR benefit, the earlier design effectively executed foreign code on the own hardware. While it's super safe due to Elastic PL's nature (our own programming language that does not allow to program anything dangerous), managers who want to use Elastic in their commercial setting might get scared. Now, nobody but the supernodes has to execute anything.


So where are we?
--------------------

We have the code base done that incorporates the new logic into the core client. The supernode functionality is there (except one little detail still missing - the guard node logic). And we have the miner done which - since super nodes and miners execute the same code - can be used for both.

What is missing with deadline dates
----------------------------------------

The following packages are still missing and are planned (not promised) to be finished as follows (London time):

09.02.2017 - The core package with guard logic is finished and goes into code-review mode
12.02.2017 - The supernode extension was added to the miner so that it can be used to verify work of others
13.-14.02.2017 - I am offline
17.02.2017 - Guard node software is finished. Parallely, everything goes into testnet mode for heavy testing
18.02.2017 - Open discussion round here, about how things are working out and specially about the retargeting algorithm that we currently have (there were ideas how to get rid of it)
18-24.02.2017 - Grace period to fix problems that we found in the test net
26.02.2017 - I will have written all details about the system down (both technically and non technically) for those guys of you, who are responsible for the PR parts (website, video, whatever)
27.02.2017 - Last discussion here in the thread
28.02.2017 - Milestone freeze, first ready-to-use version should be finished by then. I (and all the others that work on the code) am/are just (an) interested code monkey/s who love/s fascinating tech. We will not launch anything, we just give the code to the community, so if the community thinks the system (that we suggested) is good, just launch it yourself by using it! Remember: we are doing it for you guys, and not to run a company or something by ourselves. Just do with it whatever you like.

Disclaimer
----------------------------------------
We do not run anything, we do not take responsibility for anything. We code because we love coding, and if in doubt just suggest the appropriate changes and we can figure things out. Nobody forces anyone to use anything, and nobody promises anything. We code as good as we can, ... to reduce the likelihood of bugs (which always may or may not occur) we would appreciate to get more eyes on the code. Also: if you think you can do it better ... then just do it!

After everything works out, I am sure we can think about new cool features that pop into our heads.

so that means 1st of March, the community can release it the mainnet.

then some Chinese exchange will list it.
403  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][Qtum]UTXO based POS Smart Contract Platform-QA Feb1st Patrick/Earlz/BoShen on: February 04, 2017, 03:09:53 PM
seems the draft version whitepaper online again.
https://qtum.org/whitepaper/

https://qtum.org/qtum-development-updates-2/


seems Qtum have another updates on their development work.


Qtum Development Updates 2

The Qtum development team has been very busy since our last technical update. There are several different facets which are being worked on now.

Qtum Core
Although we have functioning smart contracts and a functioning fork of Bitcoin 0.13 using PoSv3, these are, so far, still on separate branches. The primary focus over the past two weeks has been testing and fixing bugs between these two versions. However, our new priority since both are mostly stable is to merge them together into one cohesive blockchain.

Most bug fixing over the past week or two has taken place in the Qtum Account Abstraction Layer. The AAL is arguably one of the most complicated parts of Qtum and thus getting it correct and secure is of utmost importance.

Here is some recent passing test contracts we have run though:

## In range block hash ##

pragma solidity ^0.4.7;

contract BlockHash {
bytes32 public blockHash;

function storeBlockHash(uint blockNumber) {
blockHash = block.blockhash(blockNumber);
}
}

1. Create a contract called BlockHash
2. Set i = 1
3. Call function “storeBlockHash” of BlockHash with an argument i.

Expected behaviour:
state variable blockHash now is equal to the block hash at block number i

Result:
Pass

## Out of range block hash (> current block number) ##

pragma solidity ^0.4.7;

contract BlockHash {
bytes32 public blockHash;

function storeBlockHash(uint blockNumber) {
blockHash = block.blockhash(blockNumber);
}
}

1. Create a contract called BlockHash
3. Call function “storeBlockHash” of BlockHash with an argument 2^16 (out of range).

Expected behaviour:
state variable blockHash now empty

Result:
Pass

## Out of range block number (block number < current block number – 256) ##

pragma solidity ^0.4.7;

contract BlockHash {
bytes32 public blockHash;

function storeBlockHash(uint blockNumber) {
blockHash = block.blockhash(blockNumber);
}
}

1. Create a contract called BlockHash
3. Call function “storeBlockHash” of BlockHash with an argument current block count – 257 (out of range).

Expected behaviour:
state variable blockHash now empty

Result:
Pass

## Check that the gas and gas price are equivalent to their input from cli (1000000 gas, 0.00000001 gas price) ##

contract CheckGas {
uint public gasAmount;
uint public gasPrice

function storeGlobals() {
this.gasAmount = msg.gas
this.gasPrice = tx.gasprice;
}
}

1. Create a contract called CheckGas
2. Call function “storeGas” of CheckGas with 1000000 gas with a gas price of 0.00000001.

Expected behavior:
state variable gasPrice is 1
state variable gasAmount is close to 1000000

Result:
Pass

Also, here is a preview of the Qtum Core git repository, showing the team working on bug fixes:

Qtum Core Git Repository

Qtum Core Wallet (QT wallet)
In addition to focusing on the core blockchain protocol, we are starting to work toward branding and reworking the Qtum Core Wallet for PC and Mac. We have a splash screen, basic color changes, and icons. We are still deep in work on this, so there aren’t yet any screenshots available. Additionally, we will soon begin integrating smart contracts into the GUI so that regular users will be able to deploy and interact with smart contracts.

Future Directions
We are constantly looking to implement not just what designs we have now, but also ensure that those designs will be extensible and work well as a foundation to build on for our future activities. These are in-flux designs, but some ideas currently being discussed include: better and faster interactions with smart contracts from SPV wallets, making data feeds a “first-class citizen” on the blockchain with efficiency and usability improvements, Automatic/periodic contract execution, simplification of the account abstraction layer (in order to increase efficiency and reduce attack vectors), enhancing side-chain support with smart contracts on both chains in mind.

Qtum Mobile Wallets

Qtum will also feature both iOS and Android wallet at release. The majority of our efforts are currently being expended is testing to ensure that they handle PoSv3 fine, and branding and skinning the wallets so that they look professional and are easy to use.

Qtum Wallet DesignQtum Wallet Design 2    
404  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][XEL] Elastic Project - The Decentralized Supercomputer on: February 01, 2017, 10:56:00 AM
this is one of the most interesting project this year!

XEL is coming in 2017.
405  Alternate cryptocurrencies / Announcements (Altcoins) / Re: Tau-Chain and Agoras Official Thread: Generalized P2P Network on: February 01, 2017, 07:14:46 AM
this project is very interesting. some cool idea, but i feel it may take years to finish.
406  Alternate cryptocurrencies / Announcements (Altcoins) / Re: BYTEBALL: Totally new consensus algorithm + private untraceable payments on: February 01, 2017, 06:01:17 AM
Id say the blackbytes + Tor support makes Byteball more secure and anonymous than even Monero or Zcash.

I hope noone will really believe the quoted words, or they may find themselves in serious troubles...
Now you are just trolling and spreading fear with only these three dots ... to back it up, because your own shit coin iota is worthless.

@tonych, do you support the claim of SatoNatomato the Expert?

I think the privacy features of all 3 coins are more or less the same for most practical purposes.   What differs, and what matters most for regular users, is usability.

people use bitcoin because bitcoin is stable. hope byteball is stable as the stone.
407  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][Qtum]UTXO based POS Smart Contract Platform-QA Feb1st Patrick/Earlz/BoShen on: February 01, 2017, 05:49:09 AM
seems the draft version whitepaper online again.
https://qtum.org/whitepaper/
408  Alternate cryptocurrencies / Announcements (Altcoins) / Re: BYTEBALL: Totally new consensus algorithm + private untraceable payments on: January 31, 2017, 03:41:53 PM


SatoNatomato and Come-from-Beyond, could you please stop the kindergarten!

This is an unmoderated thread, so no posts will be deleted, but no need to exploit this.

that's classic, that's crypto world.
409  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][Qtum] UTXO based POS Smart Contract Platform - QA Session Feb 1st on Slack on: January 31, 2017, 03:01:21 PM
want to know more about the technical stuff.
can any one give more explain on the Qtum account abstraction layer?
and what's the biggest innovations of Qtum?

410  Alternate cryptocurrencies / Announcements (Altcoins) / Re: BYTEBALL: Totally new consensus algorithm + private untraceable payments on: January 31, 2017, 06:56:25 AM
this project is very interesting.
what's the biggest advantage of DAG ?

what's the big difference with byteball and Iota ?

thank you very much
411  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][XEL] Elastic Project - The Decentralized Supercomputer on: January 31, 2017, 06:47:55 AM
is it possible to release a XEL token based on Ethereum platform?
also why golem choose ethereum platform? what's the benefit?
why XEL is better than golem platform?
thank you.
412  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][Qtum] UTXO based POS Smart Contract Platform|On Coindesk & Bitcoinmagazine on: January 30, 2017, 03:53:54 PM
can dev give more information about the Qtum innovations from the technical side?
thank you very much
413  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][Qtum] UTXO based POS Smart Contract Platform|On Coindesk & Bitcoinmagazine on: January 29, 2017, 03:30:45 AM
There is a real excitement about Qtum, here and there, the team has a solid strategy as we can see. It could be full of surprises...

It is now confirmed that the crowd sale will start on March 1st.  I hope the direct sale on Qtum website is supported by well known established escrows since I do not plan to participate from the Chinese exchanges.  Anyways, time to start gathering up bitcoins for the ICO, it's only 1 month away.  
Hello I just want to ask why you dont want to participate on any Chinese exchanges? is there any difference to other exchanges?

I have never used a Chinese exchange so I would prefer to just use exchanges I am familiar with such as Poloniex, Bittrex, C-Cex and Yobit.  I have nothing against using a Chinese exchange but I just don't want to sign up just for the ICO and never use them again.  It's just more of a convenience to me to participate in the ICO directly off of Qtum's website and do all my trading on sites I've been using for years.  
I am in the case as you
hello from Chinese WeChat community.
right now, all Chinese exchange platform support English.
from Chinese community, we know you can invest through Qtum official website too.
i think the reason for Chinese exchange platform is Qtum have a large community in china. more than 3000 people in Qtum WeChat and QQ group.
hopefully later Qtum can have more than 5000 people before the ico in China.
414  Local / 中文 (Chinese) / Re: iEx.ec项目ICO进展公告 on: January 29, 2017, 03:23:53 AM
这个跟golem和xel的区别是什么

比起XEL 差不少。
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