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Main => General Discussion => Topic started by: bitacer on December 24, 2015, 12:13:53 pm

Title: Whats going on with Coinmarketcap ?
Post by: bitacer on December 24, 2015, 12:13:53 pm
(http://s23.postimg.org/vkyj6dchn/Screen_Shot_2015_12_24_at_2_08_51_PM.jpg)

(http://s18.postimg.org/xsf4vqtqx/Screen_Shot_2015_12_24_at_2_09_03_PM.jpg)

(http://s2.postimg.org/dmvyql8bt/Screen_Shot_2015_12_24_at_2_09_15_PM.jpg)
Title: Re: Whats going on with Coinmarketcap ?
Post by: mf-tzo on December 24, 2015, 12:34:41 pm
I just saw that and thought that this Christmas would be amazing..That feeling lasted only for 1 minute though... :(
Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 24, 2015, 12:36:43 pm
yep :(
Title: Re: Whats going on with Coinmarketcap ?
Post by: bitacer on December 24, 2015, 12:38:31 pm
a glitch ?
Title: Re: Whats going on with Coinmarketcap ?
Post by: TravelsAsia on December 24, 2015, 12:41:12 pm
Is it MetaExchange? Here's a recent transaction:

BTS/BTC    sell    0.00002118    246241.34362 BTS    0.01564617 BTC    Dec 24, 06:20:44
Title: Re: Whats going on with Coinmarketcap ?
Post by: mf-tzo on December 24, 2015, 12:43:39 pm
according to cmc, volume of btseur market on ccdk is $5,854 @ $0.087 price... Looking at ccedk I see only very small bts orders filled so doesn't make sense..

so either someone on ccedk btseur market made a big mistake and someone else got really happy and that is not shown on the order history either cmc just made a mistake with volume..
Title: Re: Whats going on with Coinmarketcap ?
Post by: lovely89 on December 24, 2015, 01:10:41 pm
Damn. Just went to sell on polonex. :(
Title: Re: Whats going on with Coinmarketcap ?
Post by: monsterer on December 24, 2015, 01:19:06 pm
Looks like someone figured out to manipulate the CMC price which is where metaexchange gets our feeds from. :(

The likely candidate is the BTS/EUR market on CCDEK which is showing a huge price, and probably skewed the weighted average they use.

This has cost us a lot of BTC. If the manipulator is reading this, please consider returning the funds to us, we will issue a full BTS refund and you will be doing the community and METAFEES holders a favour.
Title: Re: Whats going on with Coinmarketcap ?
Post by: bitacer on December 24, 2015, 01:21:06 pm
Holy s** , you got  to be kidding !  :o
Title: Re: Whats going on with Coinmarketcap ?
Post by: bitacer on December 24, 2015, 01:22:35 pm
Why would you use CMC as your feed source man ?
Title: Re: Whats going on with Coinmarketcap ?
Post by: abit on December 24, 2015, 02:44:19 pm
Looks like someone figured out to manipulate the CMC price which is where metaexchange gets our feeds from. :(

The likely candidate is the BTS/EUR market on CCDEK which is showing a huge price, and probably skewed the weighted average they use.

This has cost us a lot of BTC. If the manipulator is reading this, please consider returning the funds to us, we will issue a full BTS refund and you will be doing the community and METAFEES holders a favour.

Quote
BTS/BTC   sell   0.0000068   199900 BTS   0.00407796 BTC   Dec 24, 13:05:58 (UTC)
BTS/BTC   sell   0.00002118   246241.34362 BTS   0.01564617 BTC   Dec 24, 12:20:44 (UTC)
BTS/BTC   sell   0.00002133   46000 BTS   0.00294354 BTC   Dec 24, 12:15:44 (UTC)
http://cryptofresh.com/u/metaexchangebtc
Quote
heluwa-1 sent 200,000 BTS to metaexchangebtc block 2,057,980 - 2 hours ago - 33 BTS
heluwa-1 sent 246,000 BTS to metaexchangebtc block 2,057,917 - 2 hours ago - 33 BTS
metaexchangebtc sent 25,800 BTS to heluwa-1 block 2,057,885 - 2 hours ago - 32 BTS
heluwa-1 sent 25,800 BTS to metaexchangebtc block 2,057,834 - 2 hours ago - 32 BTS
cass sent 46,000 BTS to metaexchangebtc block 2,057,807 - 2 hours ago - 33 BTS
cass sent 100,000 BTS to metaexchangebtc block 2,057,721 - 2 hours ago - 33 BTS
cass sent 45,000 BTS to metaexchangebtc block 2,057,698 - 2 hours ago - 33 BTS

heluwa-1 sent 53,900 BTS to metaexchangebtc block 2,057,567 - 2 hours ago - 32 BTS
metaexchangebtc sent 26,460 BTS to heluwa-1 block 2,057,482 - 2 hours ago - 32 BTS
heluwa-1 sent 275,000 BTS to metaexchangebtc block 2,057,423 - 2 hours ago - 32 BTS
heluwa-1 sent 245,000 BTS to metaexchangebtc block 2,050,593 - 8 hours ago - 32 BTS
More?  @cass?

It appears 'heluwa-1' traded much through metaexchange in the past months: http://cryptofresh.com/u/heluwa-1
Btc38 may know who is him.
Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 24, 2015, 04:12:32 pm
yep me .. and i've pinged monsterer on skype as well..

IMO better me is buying BTC empty then another non known person ..
Will pay them back --> *tbh .. i would desperatly need this "gift" as well...

(and just to say, i'm not having access to ccedk exchange site/ back end etc, if u're thinking the likely candidate is the BTS/EUR market on CCDEK )

Title: Re: Whats going on with Coinmarketcap ?
Post by: puppies on December 24, 2015, 04:19:01 pm
yep me .. and i've pinged monsterer on skype as well..

IMO better me is buying BTC empty then another non known person ..
Will pay them back --> *tbh .. i would desperatly need this "gift" as well...

(and just to say, i'm not having access to ccedk exchange site/ back end etc, if u're thinking the likely candidate is the BTS/EUR market on CCDEK )

Thanks for doing the right thing Cass.  I just sent you a small gift in appreciation.  Merry Christmas.

http://cryptofresh.com/b/2062700 (http://cryptofresh.com/b/2062700)
Title: Re: Whats going on with Coinmarketcap ?
Post by: Buck Fankers on December 24, 2015, 04:24:45 pm
This thread is brought to you by : STEALTH

Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 24, 2015, 04:40:07 pm
yep me .. and i've pinged monsterer on skype as well..

IMO better me is buying BTC empty then another non known person ..
Will pay them back --> *tbh .. i would desperatly need this "gift" as well...

(and just to say, i'm not having access to ccedk exchange site/ back end etc, if u're thinking the likely candidate is the BTS/EUR market on CCDEK )

Thanks for doing the right thing Cass.  I just sent you a small gift in appreciation.  Merry Christmas.

http://cryptofresh.com/b/2062700 (http://cryptofresh.com/b/2062700)

Puppies thank you man, much appreciated, but i feel a bit sad if i'd not be able giving something back .. as it's christmas ..

http://cryptofresh.com/b/2063128

Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 24, 2015, 04:41:35 pm
@monsterer let met know how u want to handle the re-exchange ..
Title: Re: Whats going on with Coinmarketcap ?
Post by: puppies on December 24, 2015, 04:44:39 pm
yep me .. and i've pinged monsterer on skype as well..

IMO better me is buying BTC empty then another non known person ..
Will pay them back --> *tbh .. i would desperatly need this "gift" as well...

(and just to say, i'm not having access to ccedk exchange site/ back end etc, if u're thinking the likely candidate is the BTS/EUR market on CCDEK )

Thanks for doing the right thing Cass.  I just sent you a small gift in appreciation.  Merry Christmas.

http://cryptofresh.com/b/2062700 (http://cryptofresh.com/b/2062700)

Puppies thank you man, much appreciated, but i feel a bit sad if i'd not be able giving something back .. as it's christmas ..

http://cryptofresh.com/b/2063128

You've given so much to the cause already Cass.  So much to this project that I love.  My gift is finally being able to say thank you in a meaningful way.
Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 24, 2015, 04:54:05 pm
yep me .. and i've pinged monsterer on skype as well..

IMO better me is buying BTC empty then another non known person ..
Will pay them back --> *tbh .. i would desperatly need this "gift" as well...

(and just to say, i'm not having access to ccedk exchange site/ back end etc, if u're thinking the likely candidate is the BTS/EUR market on CCDEK )

Thanks for doing the right thing Cass.  I just sent you a small gift in appreciation.  Merry Christmas.

http://cryptofresh.com/b/2062700 (http://cryptofresh.com/b/2062700)

Puppies thank you man, much appreciated, but i feel a bit sad if i'd not be able giving something back .. as it's christmas ..

http://cryptofresh.com/b/2063128

You've given so much to the cause already Cass.  So much to this project that I love.  My gift is finally being able to say thank you in a meaningful way.

Chapeau
Title: Re: Whats going on with Coinmarketcap ?
Post by: abit on December 24, 2015, 05:06:15 pm
This thread is brought to you by : STEALTH
Will STEALTH do anything good with this issue?
Imo it's more important for MetaExchange to find a better price feeding method. Maybe @alt could help.
Title: Re: Whats going on with Coinmarketcap ?
Post by: abit on December 24, 2015, 05:09:23 pm
yep me .. and i've pinged monsterer on skype as well..

IMO better me is buying BTC empty then another non known person ..
Will pay them back --> *tbh .. i would desperatly need this "gift" as well...

(and just to say, i'm not having access to ccedk exchange site/ back end etc, if u're thinking the likely candidate is the BTS/EUR market on CCDEK )
Good to know you're protecting it. Would be better if you had more BTS at that time.
Title: Re: Whats going on with Coinmarketcap ?
Post by: Riverhead on December 24, 2015, 09:00:44 pm

Theft by manipulation is something anyone in the market faces - especially in times of low liquidity. Hopefully the person that exploited the markets will give some of it back but, in my experience, that is not usually the case.

There are plenty of sharks in these waters and sooner or later anyone that takes a risk to provide liquidity services is going to get bitten. All we can do is try to implement systems that mitigate the risks.

Everyone thinks they are too smart to be taken right up until they are.
Title: Re: Whats going on with Coinmarketcap ?
Post by: Bhuz on December 24, 2015, 10:08:09 pm
IMO it was also a mistake from metaex to relie only on one feed from cmc
Title: Re: Whats going on with Coinmarketcap ?
Post by: Riverhead on December 24, 2015, 10:41:58 pm
IMO it was also a mistake from metaex to relie only on one feed from cmc
Agreed. I'm sure also no one more so than them.
Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 25, 2015, 10:52:27 am
https://blockchain.info/address/1DbYtdyK5eotCms9LYsEyXCp6DX5cYtFBz

refunded ... merry Xmas..

Hopefolly the other guy will do it in same favour ..
Title: Re: Whats going on with Coinmarketcap ?
Post by: pomi0760 on December 25, 2015, 12:41:15 pm
I was another guy. I think I did nothing wrong. I did not use any BUG. If I use my account may be more subtle. I have been concerned metaexchang and poloniex.com. Before I accidentally found relatively high price. I think it is a legitimate transaction. Because I did not use any illegal means. I earned a total 6.794BTC. I have returned to the contact monsterer 3.39 BTC, although I think I should not return. But I still hope metaexchang to reduce losses.


https://blockchain.info/address/13HF4gRU6mXCVLCeiirGaoWqtQQR4AiiqZ
Title: Re: Whats going on with Coinmarketcap ?
Post by: abit on December 25, 2015, 12:58:35 pm
Thanks for the explaination. Looks like a happy end.
Title: Re: Whats going on with Coinmarketcap ?
Post by: xeroc on December 25, 2015, 01:44:09 pm
I was another guy. I think I did nothing wrong. I did not use any BUG. If I use my account may be more subtle. I have been concerned metaexchang and poloniex.com. Before I accidentally found relatively high price. I think it is a legitimate transaction. Because I did not use any illegal means. I earned a total 6.794BTC. I have returned to the contact monsterer 3.39 BTC, although I think I should not return. But I still hope metaexchang to reduce losses.


https://blockchain.info/address/13HF4gRU6mXCVLCeiirGaoWqtQQR4AiiqZ
+1
honorable behavior!
Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 25, 2015, 02:15:25 pm
I think it is a legitimate transaction. Because I did not use any illegal means. I earned a total 6.794BTC. I have returned to the contact monsterer 3.39 BTC, although I think I should not return. But I still hope metaexchang to reduce losses.

 +5%

(Maybe a small donation from metaexchange in some way would cause that people will refund it next time then as well .. but without advantage of getting a small refund donation or something .. people will ask themself next time .. why they should do this .. my 2 cents)

Title: Re: Whats going on with Coinmarketcap ?
Post by: CoinHoarder on December 26, 2015, 03:47:51 pm
That sucks Monsterer, hopefully this motivates you to improve the back end of Metaexchange a little bit. Coin market cap uses the price of each exchange, weighted by how much volume they've had in the last 24 hours. I think perhaps you can improve upon that formula by using a combination of the median price and CMC's formula. Obviously you've thought of this but a killswitch would be good too, if the price moves X% you should freeze trading until you manually OK it.

I've been working on creating part of a Meteor app (javascript & node.js) that aggregates data from 31 exchanges... it is a pain in the ass because every exchange has a different format for everything whether it be the format of their JSON, or the denomination they show price or volume. It is incomplete, but I'd be happy to share my code with you if you want to build a custom solution and cut CMC out of the loop. I admit I haven't programmed anything in about 10 years though, so my code is rough around the edges so to speak. This project is just to reacquaint myself with programming for fun so I wouldn't mind sharing the code, although I do plan on building a site around the code I'm writing. I have 31 exchanges working and am looking to implement another ~40 more. I can understand why you're using CMC though... it is a PITA to integrate a lot of exchange's APIs.
Title: Re: Whats going on with Coinmarketcap ?
Post by: Riverhead on December 26, 2015, 05:24:15 pm
I was another guy. I think I did nothing wrong. [.....] But I still hope metaexchang to reduce losses.

https://blockchain.info/address/13HF4gRU6mXCVLCeiirGaoWqtQQR4AiiqZ (https://blockchain.info/address/13HF4gRU6mXCVLCeiirGaoWqtQQR4AiiqZ)

 +5% Bravo.
Title: Re: Whats going on with Coinmarketcap ?
Post by: Shentist on December 26, 2015, 09:42:31 pm
a big bow to @cass and @pomi0760

i will discuss with paul how we will honor helping us here.

this is the risk of making your own markets and you find out, that the system you use is not good enough to make this kind of failure impossible.

i think we can improve the behavior of our market maker in this cases a lot, so that this will not happen again.

cheers guys
shentist
Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 31, 2015, 10:05:02 am
Any updates on refunding BTS  @monsterer ?

Title: Re: Whats going on with Coinmarketcap ?
Post by: monsterer on December 31, 2015, 05:31:46 pm
Any updates on refunding BTS  @monsterer ?

Hi cass, sorry for the delay - @Shentist is handling the refunds, it should be with you shortly :)
Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on December 31, 2015, 08:22:07 pm
Any updates on refunding BTS  @monsterer ?

Hi cass, sorry for the delay - @Shentist is handling the refunds, it should be with you shortly :)

ok thanks for the update - & a happy new year :)
Title: Re: Whats going on with Coinmarketcap ?
Post by: cass on January 01, 2016, 01:34:41 pm
Got BTS back and 20 METAFEEs on top of - thank you  - much apprecitated :)