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Author Topic: [RELAUNCH] HZxchange  (Read 4029 times)
pharesim (OP)
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May 19, 2015, 07:25:52 PM
Last edit: March 26, 2016, 04:04:21 PM by pharesim
 #1



After several weeks of public testing, we are now ready to proudly announce the productive release of HZxchange!

The project

HZxchange is a decentralized cryptocurrency exchange with distributed storage. We currently allow the trading of Bitcoin, Litecoin, DASH, Cannabiscoin, Potcoin, NXT and Bitshares. More coins will follow soon.


The reason

Everybody knows that the old centralized exchange model has seen its best days. Hacks and scams have become everyday-business because although we want freedom from central authorities, we still had to trust single individuals, which often even weren't even known by real name.
With regulations kicking in, decentralization keeps you from giving your ID to a company you know nothing about. HZxchange is transparent, but still anonymous. You decide for yourself who you want to give information about your account to.


Security

Your funds are stored decentralized on multisig addresses, making it impossible for a single admin to run away with a wallet. The signatures are held by well-known members of the HZ (or the coin's) community. There's no public facing server a hacker could target, and even if he finds one that's not enough to get access to any coin. Trading takes place on the Horizon blockchain, using either a wallet of your choice or the dedicated webapplication at http://hzxchange.net The asset balances are snapshotted regularly, so if someone breaches the issuers account we'll just switch to another asset.
Of course we will keep up with HZ development. When phasing is implemented even the storage could be managed by a distributed system.


Terms

The network fee is 1 HZ (~ 0.000001 BTC) for each bid/ask. There's a 0.5% fee for deposits and 1% for withdrawals. Those are used to pay the shareholders and node operators. The numbers may be changed later, a prior announcement is self-evident.


Details

All deposits are sent to a multisig address. The user receives an asset to trade on the HZ blockchain. As soon as that asset was sold on the asset exchange, she has the HZ on her personal account. She can then decide to keep those HZ, or exchange them for another asset.

When she bought an asset and wants to withdraw, she has to send that asset back to the issuer. We are currently running 3 nodes monitoring those transactions. Each node checks the amount, the recipient and some other details, before it signs an outgoing transaction from the multisig address. When 2 nodes agree on the validity of a transaction, it is broadcasted and the user receives her coins.

Those numbers are variables, we can improve the security when the amount of deposited funds gets bigger. Instead of 2-of-3 multisig we could use 8-of-15, or any other number in between.

The gateway software is not yet fully P2P, at this point setting up a new multisig address is a manual process (once per coin).
One node acts as mainnode (keeps track of all transactions), the other two are only used for signing.
HZ multisig still is in development, and we can't give all admins access to the issued assets. They are currently handled by pharesim, who is running all main nodes.
As soon as HZ Phasing is implemented the assets will be decentralized too, and when we grow in users (and earn enough fees to pay for the required movements then) it's planned to reconsider the option of distributed storage management, which would allow a complete P2P solution with nodes with equal rights and voting mechanisms (signers, fees and more, per coin, based on hzxchange asset ownership).


Links
Website - http://hzxchange.net
Horizon - https://horizonplatform.io
Github - https://github.com/pharesim/HZx
Facebook - https://www.facebook.com/groups/HZxchange/?ref=bookmarks
Twitter - https://twitter.com/HZxchange
Forum - http://horizonplatform.io/topic/hzxchange/

DonShoshan
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May 19, 2015, 08:01:25 PM
 #2

Great service! Now, that poloniex is asking for our details this might be a very good alternative.
pharesim (OP)
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May 19, 2015, 08:47:04 PM
 #3

We need to list more coins, but due to our dedicatedness to decentralization we don't want to run all the signing nodes with the same crew.

One node will always be run by the HZxchange dev team, but up to two others can and should be outsourced to the coins' dev and/or community. So if you belong to one of those groups, contact us to get your coin listed. All you need is a server able to run the coin wallet+hz.
pharesim (OP)
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May 19, 2015, 09:06:53 PM
 #4

I did a lot of explaining about SSL encryption the last days, so I think it's a good idea to have a copy here to be able to give a link instead of writing the same thing all over again:

Quote
No private data is sent anywhere.

Offering SSL would give a false sense of security. Never enter your HZ passphrase in an untrusted location. Even when it's SSL encrypted, someone with access to the server can read it.
HZ services need to use local signing, which is the case for both the public wallet and hzxchange.
There's another good reason to not use SSL in this specific case. You can use a local node as backend (in the settings on the bottom of the page) right now, which doesn't work because of browser security settings when the main connection is encrypted.
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May 20, 2015, 12:14:06 AM
 #5

Watching...I think this is pretty cool.

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BDCoinMiner
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May 20, 2015, 02:09:05 AM
 #6

Cool to have dedicated thread for HZXchange

Current HZXchange asset Lowest Ask 40HZ Highest Bid: 33HZ

Let's trade!
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May 20, 2015, 03:33:42 PM
 #7

well done!

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May 20, 2015, 06:13:02 PM
 #8

Please consider listing AltSheets on your Exchange Smiley
pharesim (OP)
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May 20, 2015, 08:13:29 PM
 #9

Please consider listing AltSheets on your Exchange Smiley

Done  Wink
Erik Goff
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May 21, 2015, 02:24:26 PM
 #10

Great work guys Smiley
Is Monero already on your list of coins to add ?

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pharesim (OP)
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May 21, 2015, 03:01:40 PM
 #11

Great work guys Smiley
Is Monero already on your list of coins to add ?

Thanks Smiley

For now we only support BTC, BTS and NXT based coins. I will add CryptoNote and NEM later, but I absolutely can't tell when. Will be a while, my to-do-list is getting bigger instead of smaller all the time Wink
The code's on github though, anyone could add it...
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May 21, 2015, 09:56:18 PM
 #12

Please consider listing AltSheets on your Exchange Smiley

Done  Wink
They will include all the coins from Cryptsy Bittrex Poloniex. It is high time to put an end to this centralization. Please announce the list of planned to include coins. I look forward to.  Grin
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ZEN


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May 26, 2015, 12:32:36 PM
 #13

how the hell do you cancel your bid?!
its super slow also...
pharesim (OP)
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May 26, 2015, 01:04:55 PM
 #14

This needs to be done on the wallet for now (https://account.horizonplatform.io).
Go to Asset Exchange -> Open Orders

Will be possible on the hzxchange site with the next update.


If placing orders etc. is too slow, try using your local node as backend (settings below the coin table)
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May 26, 2015, 10:22:37 PM
 #15

I tried to generate a deposit address for HZxDASH a little over 6 days ago.  Today, the site still shows "waiting for address".

You might want to look into that.
pharesim (OP)
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May 27, 2015, 11:18:25 AM
 #16

Done. Thanks for reporting and sorry for the waiting time.
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May 27, 2015, 05:57:34 PM
 #17

Done. Thanks for reporting and sorry for the waiting time.


Thanks.  Smiley
pharesim (OP)
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May 29, 2015, 05:48:32 PM
 #18

Follow HZx on twitter! https://twitter.com/HZxchange
pharesim (OP)
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May 30, 2015, 12:33:39 AM
 #19

Added trade history and the ability to cancel orders
Enjoy!
http://hzxchange.net
pharesim (OP)
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June 09, 2015, 09:22:10 PM
 #20

HZxBTS has been disabled until further notice. The reason is an api change which doesn't allow withdrawals any more.

If anybody knows how to get the public address from an account, now that wallet_get_account_public_address has been removed, that would help a lot!
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