Author Topic: Price Feed Review  (Read 3999 times)

0 Members and 1 Guest are viewing this topic.

Offline alt

  • Hero Member
  • *****
  • Posts: 2793
    • View Profile
  • BitShares: baozi
Re: Price Feed Review
« Reply #75 on: May 30, 2019, 11:54:16 pm »
you just need to explain how your price is reasonable.
do you think the price feed is important for smart asset?
did you do the research of how to provide a reasoanble price?
you witnesses got a good paid from blockchain, you need to do some serious research in return.
you witnesses are the guys who do a bad job, and now you said you are tired to hear the complaining.

I am so tired in complaining what the current witnesses have done.

I am so tired of your complaints as well.

Why not complain that gdex witness only provides 2 feeds? Why complain when witness doesn't meet >your< standards, when no standards are set? My feed as of right now is 2.1% off for CNY.

With no standard of measurement, you're complaints are meaningless. Besides, I am only 1 out of 21 witnesses, don't you understand how the price is set? 2.1% skews the median how much?

Your complaint is baseless. Better, you target witness that don't do the rest of their duties well, rather than complain about the few who don't always provide the feed the way you want it.
« Last Edit: May 30, 2019, 11:59:33 pm by alt »

Offline BTSMoon

  • Jr. Member
  • **
  • Posts: 46
    • View Profile
Re: Price Feed Review
« Reply #76 on: May 31, 2019, 01:21:29 am »
西方程序员的月薪大约是$7000美金,比特股满足不了他们啊,不如把喂价的事情交回给社区,我们只需要猴哥,Binggo 和 GDEX 三个就行了。

Online bitcrab

  • Committee member
  • Hero Member
  • *
  • Posts: 1385
    • View Profile
  • BitShares: bitcrab
  • GitHub: bitcrab
Re: Price Feed Review
« Reply #77 on: May 31, 2019, 03:25:54 am »
I am so tired in complaining what the current witnesses have done.

I am so tired of your complaints as well.

Why not complain that gdex witness only provides 2 feeds? Why complain when witness doesn't meet >your< standards, when no standards are set? My feed as of right now is 2.1% off for CNY.

With no standard of measurement, you're complaints are meaningless. Besides, I am only 1 out of 21 witnesses, don't you understand how the price is set? 2.1% skews the median how much?

Your complaint is baseless. Better, you target witness that don't do the rest of their duties well, rather than complain about the few who don't always provide the feed the way you want it.

you can complain anyone, but that is not the excuse for you to do bad job.

you can check here to get a reference of the standard. https://bitsharestalk.org/index.php?topic=28383.msg330690#msg330690

feed price should not conflict with the modified DEX price, however at the above snapshot, you feed a price which is 5%+ less than the modified DEX price.

@alt I don't think you need to wait more time, please unvote this witness immediatelly, I don 't think he can do a better job based on such an attitude.

Online binggo

  • Hero Member
  • *****
  • Posts: 1146
    • View Profile
Re: Price Feed Review
« Reply #78 on: May 31, 2019, 04:55:04 am »

« Last Edit: May 31, 2019, 04:58:00 am by binggo »

Online binggo

  • Hero Member
  • *****
  • Posts: 1146
    • View Profile
Re: Price Feed Review
« Reply #79 on: May 31, 2019, 06:46:32 am »
zhaomu, not only once!


Offline bitProfessor

  • Full Member
  • ***
  • Posts: 127
    • View Profile
  • BitShares: bts0502
Re: Price Feed Review
« Reply #80 on: May 31, 2019, 08:58:44 am »
西方程序员的月薪大约是$7000美金,比特股满足不了他们啊,不如把喂价的事情交回给社区,我们只需要猴哥,Binggo 和 GDEX 三个就行了。
晕死,你还没搞明白什么是见证人吧,还三个人包场,我真是醉了

Online ioex

  • Full Member
  • ***
  • Posts: 158
    • View Profile
Re: Price Feed Review
« Reply #81 on: May 31, 2019, 02:24:30 pm »
看到这么多不珍惜机会的活跃见证人,提供严重偏离的喂价,真的痛心。你们知道standby 见证人多希望有个机会吗?

Offline BTSMoon

  • Jr. Member
  • **
  • Posts: 46
    • View Profile
Re: Price Feed Review
« Reply #82 on: May 31, 2019, 06:23:53 pm »
西方程序员的月薪大约是$7000美金,比特股满足不了他们啊,不如把喂价的事情交回给社区,我们只需要猴哥,Binggo 和 GDEX 三个就行了。
晕死,你还没搞明白什么是见证人吧,还三个人包场,我真是醉了

我可能还没弄明白什么是见证人,但是Abit大神应该很清楚吧:
https://bitsharestalk.org/index.php?topic=28418.msg330453#msg330453

我坚决的认为与其继续让无心的见证人搞喂价,不如让社区的有心人搞好喂价。让100个无心人喂价,不如让3个有心人喂价。

Offline alt

  • Hero Member
  • *****
  • Posts: 2793
    • View Profile
  • BitShares: baozi
Re: Price Feed Review
« Reply #83 on: June 01, 2019, 08:20:38 am »
didn't get any response.
unvoted for verbatech2 and witness.yao.
will wait others response for another 24 hours.

USD/BTS price is 0.0658, while CNY/BTS price is 0.464,
means bitCNY/bitUSD rate is 7.05, while the fiat rate of CNY/USD is 6.9

I will unvote those witness who give feed price under 0.0658 if can't get a reasonable explain.


Offline abit

  • Committee member
  • Hero Member
  • *
  • Posts: 3589
    • View Profile
    • Steemit Blog
  • BitShares: abit
  • GitHub: abitmore
Re: Price Feed Review
« Reply #84 on: June 01, 2019, 11:23:00 am »
@alt

为什么CNY:USD交易价格在7以上,而不是“官方”规定的6.9?因为“官方”汇率是被操纵的。而加密货币交易市场是自由的。

我的上次喂价:
Kraken BTC 报价 8550 美金
Bittrex BTC 报价 8549 美金
ZB BTC  报价 60241 RMB
AEX BTC 报价 60284 RMB

综合结果:
人民币:美金 约等于 7.05

最新报价截图


60300, 60202 / 8582, 8570 ~= 7.015, 7.036
« Last Edit: June 01, 2019, 11:39:26 am by abit »
BTS account: abit
BTS committee member: abit
BTS witness: in.abit

Online zhouxiaobao

Re: Price Feed Review
« Reply #85 on: June 01, 2019, 12:20:04 pm »
@alt

为什么CNY:USD交易价格在7以上,而不是“官方”规定的6.9?因为“官方”汇率是被操纵的。而加密货币交易市场是自由的。

我的上次喂价:
Kraken BTC 报价 8550 美金
Bittrex BTC 报价 8549 美金
ZB BTC  报价 60241 RMB
AEX BTC 报价 60284 RMB

综合结果:
人民币:美金 约等于 7.05

最新报价截图


60300, 60202 / 8582, 8570 ~= 7.015, 7.036

       那既然是自由汇率那为什么脱离不了官方汇率很多呢?所以这是中外比特币的价格差,是由搬砖成本决定的,不是汇率差。
      喂价应当反应的是bts与法币之间转换的价格,如果中间加上btc这一层,要把转换成本算上。
     为啥btc/bts交易对的价格总是比法币交易对的价格低?环节越多搬砖成本越高啊。所以在主要交易所和内盘当中,最高价格最接近实际法币转换价格。bitcny和bitusd都应当用最高价,为防止价格操纵,可以加一个偏离顶,比如若最高价大于平均价超过5%,则不再上调喂价。

Offline alt

  • Hero Member
  • *****
  • Posts: 2793
    • View Profile
  • BitShares: baozi
Re: Price Feed Review
« Reply #86 on: June 01, 2019, 01:11:36 pm »
看了下这个平台就是FIAT USD,USDT和美元汇率就是1.0对吗?
可以认为人民币通过BTC交易换美元导致美元溢价了2.2个点,这样是可以解释内盘美元比人民币溢价2.2个点

但是我当时是按美元计价得到内盘美元喂价低了超过2个点,人民币喂价差不多。
你看看bingo在我后面几分钟的截图,人民币计价 0.4728,按1美元7.05算是0.067美元。
有没有可能你们的脚本汇率转换逻辑有问题,把0.067美元的BTS按 6.9 转成人民币喂价 0.4627人民币,再按 7.05的汇率算成 0.0656美元了?
所以当时的实际情况是人民币和美元喂价都低了超过2个点。

@alt

为什么CNY:USD交易价格在7以上,而不是“官方”规定的6.9?因为“官方”汇率是被操纵的。而加密货币交易市场是自由的。

我的上次喂价:
Kraken BTC 报价 8550 美金
Bittrex BTC 报价 8549 美金
ZB BTC  报价 60241 RMB
AEX BTC 报价 60284 RMB

综合结果:
人民币:美金 约等于 7.05

最新报价截图


60300, 60202 / 8582, 8570 ~= 7.015, 7.036
« Last Edit: June 01, 2019, 01:14:14 pm by alt »

Offline Xeldal

  • Hero Member
  • *****
  • Posts: 1023
    • View Profile
  • BitShares: xeldal
Re: Price Feed Review
« Reply #87 on: June 01, 2019, 02:13:11 pm »
I've adjusted my feed pricing a couple days ago and have been monitoring the results.  I hope you find it more in line with expectations. 

I'd like to mention that depending on when you take a snapshot of feed prices it might not be an accurate representation of how well any witness it tracking price, with regard to how often a feed script is checking for price changes.  For example if taken just after a significant price movement it might appear that some prices are off from where they should be.  Where as, if given more time (at least 1 hour), their feed price script will make the appropriate adjustment.   We are looking at many different markets also, so picking a time where all of these have been relatively stable for a period of time would be important for having a snapshot be an accurate representation.

I'm not saying this applied to my feeds abnormal prices, just wanted to mention it, as it might for some look worse than it actually is.

I'm currently only checking once an hour for price changes due to certain free API limit restrictions.  As far as I understand it, this is still adequate.  Please inform me if this is no longer considered acceptable.

After looking at my feeds, I found it was in fact a bit off and needed attention.  I'll continue to keep a closer eye on this.  Thanks everyone for paying attention.

Online binggo

  • Hero Member
  • *****
  • Posts: 1146
    • View Profile
Re: Price Feed Review
« Reply #88 on: June 01, 2019, 11:53:24 pm »
其实多数情况下,人民币与美元喂价基本都会低1%左右,部分情况下会低到2个点,甚至超过2个点,很少一部分情况会略微低0.5%,汇率换算及转换损耗需要及时注意,而且外盘BTC及USDT交易对的深度明显都不足。
从另一个方面来看的话,bitCNY现在MSSR=1.01,如果喂价偏低,会使MSSR变相偏大,进而影响内盘价格,最后再影响手续费。

看了下这个平台就是FIAT USD,USDT和美元汇率就是1.0对吗?
可以认为人民币通过BTC交易换美元导致美元溢价了2.2个点,这样是可以解释内盘美元比人民币溢价2.2个点

但是我当时是按美元计价得到内盘美元喂价低了超过2个点,人民币喂价差不多。
你看看bingo在我后面几分钟的截图,人民币计价 0.4728,按1美元7.05算是0.067美元。
有没有可能你们的脚本汇率转换逻辑有问题,把0.067美元的BTS按 6.9 转成人民币喂价 0.4627人民币,再按 7.05的汇率算成 0.0656美元了?
所以当时的实际情况是人民币和美元喂价都低了超过2个点。
« Last Edit: June 02, 2019, 12:00:58 am by binggo »

Offline Thom

Re: Price Feed Review
« Reply #89 on: June 02, 2019, 01:32:11 am »
I've adjusted my feed pricing a couple days ago and have been monitoring the results.  I hope you find it more in line with expectations. 

I'd like to mention that depending on when you take a snapshot of feed prices it might not be an accurate representation of how well any witness it tracking price, with regard to how often a feed script is checking for price changes.  For example if taken just after a significant price movement it might appear that some prices are off from where they should be.  Where as, if given more time (at least 1 hour), their feed price script will make the appropriate adjustment.   We are looking at many different markets also, so picking a time where all of these have been relatively stable for a period of time would be important for having a snapshot be an accurate representation.

I'm not saying this applied to my feeds abnormal prices, just wanted to mention it, as it might for some look worse than it actually is.

I'm currently only checking once an hour for price changes due to certain free API limit restrictions.  As far as I understand it, this is still adequate.  Please inform me if this is no longer considered acceptable.

After looking at my feeds, I found it was in fact a bit off and needed attention.  I'll continue to keep a closer eye on this.  Thanks everyone for paying attention.

Indeed, but I don't believe after reviewing bitcrab's link to the "standard" he is using takes such things into account. His "standards" are simply not comprehensive enough, but that doesn't matter to him apparently, or do other factors that should be concerning the witness role, such as the number of feeds a witness provides, or how frequently they are updated, to say the least.

When I check my feeds most of the time they are < 0.1% from median. When they are checked makes a huge difference. If they are off at certain times are they off enough to skew the median by a significant amount (do my "bad" feeds skew the median by more than 1% ?) I seriously doubt it. The charts on the page in black, how are they calculated? Which exchanges / sources are used? How often are they sampled?

Just throwing up a chart of some numbers to rank witnesses' feed accuracy without that info is not helpful. If that info is available consider publishing it for the benefit of the entire BTS community.

The tool I rely on is RoelandP's witness log: https://roelandp.nl/bitshareswitnesslog/ As of this moment my feed for CNY is only off by 0.05 BTS from median price, that's less than $0.0034185, and that is just one witnesses' influence. Calling for witness unvote for such small deviations is a witch hunt and is ridiculous. Not surprising to see such behavior from you tho. I am surprised to see alt agreeing with bitcrab tho.
Injustice anywhere is a threat to justice everywhere - MLK |  Verbaltech2 Witness Reports: https://bitsharestalk.org/index.php/topic,23902.0.html