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

[cybterpunk]

Why some accounts give me a message about Qtum
But I myself did not participate in ICO qtum??

someone is attack Qtum and spam people's inbox...

some silly people..

should ban their account, please report to the moderator..

[1714914885]

1714914885

[cybterpunk]

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.



thank you skycoin dev, because of you, i brought into qtum and made some money.

i like this post, if you are new to Qtum, you should read it.

[BTCspace]

please, stop spam news via pm

report the spammer to the moderator.

someone is spamming...

[Pipesnake]

please, stop spam news via pm

report the spammer to the moderator.

someone is spamming...

There is a lot of PM coming from newbie accounts about the Qum project and this has made me come on this thread.OP why don't you ask these guys to stop spamming again and again?

[miramare]

Could you please stop hire people to spam my inbox with this shit? Ok?

Just send to your investors is far enough.

[86]

Got a private message as well. 

[daadog]

I like the idea and the ICO, but it's really annoying that they  chose to move the funds to a chinese exchange.

[addicto]

OMG how to get rid of these spammers why some want to hurt reputation of this mega project. I'm real supporter of this project but don't see anymore msg about that testnet release again and again please stop sending me it's enough.

[Chasoid]

May be it's time to report to moderator and not beg them here to not spamming?

[Qtum]

Did these spam messages come in today? Please report them if they did. I believe one of the forum administrators purged prior messages from inboxes, but there is simply nothing that we can do to stop them.

These messages started about 8 hours before our site was ddos'd, so it is a bit suspicious. Someone is also spamming on other Slack channels as Qtum-Patrick, which is very annoying.

If you do receive a message like this on any platform, please report it right away. The closest thing to 'spam' we've done is send a newsletter, and we get the e-mail addresses from our Slack channel, or anyone who signs up to receive them.

[daserpent]

t is looking one of the best ICO and i think a lot of people will invest here. i am also interested for investment here. their signature campaign twitter through out their all procedure is very clear ad therefore people are confident and interested to invest here.

[dishku]

Did these spam messages come in today? Please report them if they did. I believe one of the forum administrators purged prior messages from inboxes, but there is simply nothing that we can do to stop them.

These messages started about 8 hours before our site was ddos'd, so it is a bit suspicious. Someone is also spamming on other Slack channels as Qtum-Patrick, which is very annoying.

If you do receive a message like this on any platform, please report it right away. The closest thing to 'spam' we've done is send a newsletter, and we get the e-mail addresses from our Slack channel, or anyone who signs up to receive them.

I also think some people are involve into that suspicious job and trying to hurt this project by making stress the people by sending message again and again with different accounts. I understand the whole situation now it's clear the team is not involve into this. Please ignore this type of message.

[daadog]

What about the price, do you think it will drop on release and when it gets listed on polo etc ?

[scambust]

Will you please stop your minions from spamming my inbox!  

[leowonderful]

Will you please stop your minions from spamming my inbox!  

Seriously. Alts like this are the worst and it shows how desperate they are to get the news out cheaply. One more thing I won't be giving two fucks about.

[Qtum]

Test Network Tokens:



There is now a Faucet for anyone who would like Qtum Test Network tokens. These tokens are for testing purposes only:

http://qtum.me/#!/

[malcovixeffect]

Will you please stop your minions from spamming my inbox!  

Seriously. Alts like this are the worst and it shows how desperate they are to get the news out cheaply. One more thing I won't be giving two fucks about.

I agree, they are using newbie accounts to spread their pathetic project. I dont give fuck about your scammy and shady project

[len01]

Will you please stop your minions from spamming my inbox!  

Seriously. Alts like this are the worst and it shows how desperate they are to get the news out cheaply. One more thing I won't be giving two fucks about.

I agree, they are using newbie accounts to spread their pathetic project. I dont give fuck about your scammy and shady project

same here today i get a pm too from another user http://prntscr.com/fq9ezc stop pm please

[Alonzo Ewing]

Will you please stop your minions from spamming my inbox!  

Seriously. Alts like this are the worst and it shows how desperate they are to get the news out cheaply. One more thing I won't be giving two fucks about.

I agree, they are using newbie accounts to spread their pathetic project. I dont give fuck about your scammy and shady project

same here today i get a pm too from another user http://prntscr.com/fq9ezc stop pm please

I too received the spam email about Qtum from this user mojosplurr

When will these things stop?

[Qtum]

The Qtum Sparknet Faucet 
by Qtum earlz


I've made a smart contract for the Qtum Sparknet testnet. It functions as a basic faucet. It doesn't help if you don't already have some coins because gas is required to use it. However, if you need more coins you can use this faucet to retrieve 100 coins at a time. You can also use it to send coins to other addresses not owned by you.

Here is the contract code, it's very simple:

pragma solidity ^0.4.11;

contract QtumFaucet {
    uint constant COIN = 100000000;
    function deposit() public payable{
    }
    function withdraw() public{
        uint amount = 100 * COIN;
        if(this.balance < 100 * COIN){
            amount = this.balance;
        }
        if(!msg.sender.send(amount)){
            throw;
        }
    }
    function send(address a) public{
        uint amount = 100 * COIN;
        if(this.balance < 100 * COIN){
            amount = this.balance;
        }
        if(!a.send(amount)){
            throw;
        }
   }

   function() payable{}
}
This contract generates this ABI JSON file:

[{"constant":false,"inputs":[],"name":"withdraw","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"a","type":"address"}],"name":"send","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"deposit","outputs":[],"payable":true,"type":"function"},{"payable":true,"type":"fallback"}]
This contract is deployed to the sparknet at address f28aa77dd07ee8a1288ab6f41b23ebf6d605dc3e.

To initially fill this contract I will use "ethabi" like so:

ethabi encode function ~/faucet.json deposit
d0e30db0
I deposit 1000 tokens to the faucet now using sendtocontract:

./qtum-cli sendtocontract f28aa77dd07ee8a1288ab6f41b23ebf6d605dc3e d0e30db0 1000
After this transaction has confirmed we can actually withdraw some funds from the faucet contract. So, lets get an address:

./qtum-cli getaccountaddress x
QUvMQdxMxUuCQ7zLHvAcfmhFWyP9kkjr8C
So, we now use that to construct our ABI data using ethabi again:

ethabi encode function ~/faucet.json send -p QUvMQdxMxUuCQ7zLHvAcfmhFWyP9kkjr8C
error: Tokenizer(FromHex(Invalid character 'Q' at position 0))
Now we face a problem. Solidity doesn't actually use base58 addresses, it uses hex addresses like in Ethereum. This includes the ABI data as well. We must first convert our base58 address QUvMQdxMxUuCQ7zLHvAcfmhFWyP9kkjr8C to a hex address. A recent update to Qtum has added two RPC calls for this purpose: gethexaddress and fromhexaddress.

./qtum-cli gethexaddress QUvMQdxMxUuCQ7zLHvAcfmhFWyP9kkjr8C
5b3a45e69dbbd7b3a9db31a8c855040f35793929
What this does is actually takes the data encoded in the base58 address, validates that it is not corrupted and is the right size, and then will return that data as a hex string. This hex string is the address format that Solidity and thus the ABI uses. So, now we fix our mistake:

ethabi encode function ~/faucet.json send -p 5b3a45e69dbbd7b3a9db31a8c855040f35793929
3e58c58c0000000000000000000000005b3a45e69dbbd7b3a9db31a8c855040f35793929
Now we can use callcontract so that we know how much gas we need to send (or you can skip this if you're confident the default is enough)

./qtum-cli callcontract $FAUCET 3e58c58c0000000000000000000000005b3a45e69dbbd7b3a9db31a8c855040f35793929
{
  "address": "f28aa77dd07ee8a1288ab6f41b23ebf6d605dc3e",
  "executionResult": {
    "gasUsed": 55978,
    "excepted": "None",
    "newAddress": "f28aa77dd07ee8a1288ab6f41b23ebf6d605dc3e",
    "output": "",
    "codeDeposit": 0,
    "gasRefunded": 0,
    "depositSize": 0,
    "gasForDeposit": 0
  },
  "transactionReceipt": {
    "stateRoot": "4118b6d0685de70ef82c7905e7ab2d691470285b7c56506ffca9b1db21bcb278",
    "gasUsed": 55978,
    "bloom": "0000000000000000000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000",
    "log": [
    ]
  }
}
Under execution result, the gasUsed field is what we are interested in. It's always safer to send a little more gas than is needed to avoid out of gas exceptions. So, we will use 60,000 for the gas limit.

./qtum-cli sendtocontract $FAUCET 3e58c58c0000000000000000000000005b3a45e69dbbd7b3a9db31a8c855040f35793929 0 60000
{
  "txid": "cb7e8ef370a05665d5dd43d1134b8d0833d1c746d2d618162727c54e0f5a6ef5",
  "sender": "QWqFJB4EUhbBJpGnnnjaeR1mdUJdr6fWkV",
  "hash160": "703357de0cad939a528035cd319f849067fce2c7"
}
You can look at the results on the block explorer. Here is the contract execution. If we look at the block this transaction was included in, we see immediately after the execution transaction we have the Account Abstraction Layer generated transaction which actually sends 100 Qtum to our intended address, QUvMQdxMxUuCQ7zLHvAcfmhFWyP9kkjr8C. Further more, if we look at the coinstake transaction we can see our gas refund as the last output, an output of 0.0004022 Qtum sent to address QWqFJB4EUhbBJpGnnnjaeR1mdUJdr6fWkV.

And finally, in my wallet I also see the 100 tokens that were sent.

This contract is still alive and I'll monitor it and put more coins into it. So join in on the fun and deposit some coins and withdraw them. It's a pretty cool little contract that I made in about 10 minutes.