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Author Topic: Bitcoinica "zhoutonging price" formulae (unofficial)  (Read 3884 times)
M4v3R
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January 11, 2012, 11:35:33 AM
 #21

Work great here too, thank you. Could you make it also work with session login with www.bitcoinica.com? Thanks.

Thanks. I've updated the script to work with www.bitcoinica.com. Please re-download it.
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January 11, 2012, 01:19:17 PM
 #22

Off-topic: I received Google Alerts about this, and when I saw "pastebin", I thought it was a database dump, LOL...

Hehe, this made me chuckle, I would have loved to have seen your face (I empathise for I am in a similar position with my work)

Wink

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January 11, 2012, 01:47:09 PM
 #23

Work great here too, thank you. Could you make it also work with session login with www.bitcoinica.com? Thanks.

Thanks. I've updated the script to work with www.bitcoinica.com. Please re-download it.

Thanks, good job.
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January 12, 2012, 09:14:18 PM
 #24

I made a simple script for adding this price to the Bitcoinica UI. Looks like this:



Download it here: http://dl.dropbox.com/u/1127246/bitcoinica.user.js

Drag it onto your Chrome browser window (should work in any browser that supports Greasemonkey scripts but I didn't test it elsewhere) and you're done. Hope it helps someone!

Note: this is my first real take on UserScripts. Any suggestions are welcome. Also, Bitcoinica UI refreshes in unusual way (instead of updating specific elements they pull whole tables with AJAX). That's why UI could flicker a bit with this (even though I'm intercepting the updater function with my code really early), I can't help with that.

Edit: Second note: this doesn't take account for LIMIT / STOP orders that you have between the current price and the min price. Maybe it will, someday.

Thanks! This is really useful.

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stochastic
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January 21, 2012, 07:26:44 AM
 #25

I think it would be productive if you included a calculator somewhere on your site to calculate the maximum number of units that can be traded without getting a margin call.



You can get some figures from Bitcoinica UI directly. Then,

"Zhoutonging price" = current ask + (net value - maintenance) / amount

OR

"Zhoutonging price" = current bid - (net value - maintenance) / amount


Is the "amount" here the number of Bitcoins bought/sold?

Do you mean instead

"Zhoutonging price" = current ask + [ (net value - maintenance) / amount ]

OR

"Zhoutonging price" = current bid - [ (net value - maintenance) / amount ]


Introducing constraints to the economy only serves to limit what can be economical.
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January 21, 2012, 07:29:39 AM
 #26

I think it would be productive if you included a calculator somewhere on your site to calculate the maximum number of units that can be traded without getting a margin call.



You can get some figures from Bitcoinica UI directly. Then,

"Zhoutonging price" = current ask + (net value - maintenance) / amount

OR

"Zhoutonging price" = current bid - (net value - maintenance) / amount


Is the "amount" here the number of Bitcoins bought/sold?

Do you mean instead

"Zhoutonging price" = current ask + [ (net value - maintenance) / amount ]

OR

"Zhoutonging price" = current bid - [ (net value - maintenance) / amount ]



Amount is
amount bought + BTC margin
for a long position.

amount sold - BTC margin
for a short position.

The brackets are implied by standard order of operations.

https://www.bitcoin.org/bitcoin.pdf
While no idea is perfect, some ideas are useful.
12jh3odyAAaR2XedPKZNCR4X4sebuotQzN
M4v3R
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January 21, 2012, 07:29:53 AM
 #27

The square brackets aren't needed because of order of math operations - division always comes before addition/multiplication.

Edit: Gah, beat me to it Cheesy
stochastic
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January 21, 2012, 08:25:26 AM
 #28

I think it would be productive if you included a calculator somewhere on your site to calculate the maximum number of units that can be traded without getting a margin call.



You can get some figures from Bitcoinica UI directly. Then,

"Zhoutonging price" = current ask + (net value - maintenance) / amount

OR

"Zhoutonging price" = current bid - (net value - maintenance) / amount


Is the "amount" here the number of Bitcoins bought/sold?

Do you mean instead

"Zhoutonging price" = current ask + [ (net value - maintenance) / amount ]

OR

"Zhoutonging price" = current bid - [ (net value - maintenance) / amount ]



Amount is
amount bought + BTC margin
for a long position.

amount sold - BTC margin
for a short position.

The brackets are implied by standard order of operations.

Wow, this insomnia is killing me.

Correct me if I am wrong, but from my experience margin% = 100 / Leverage.  So if I have 10:1 leverage selected my margin % should be 10% and not 4%.  I am not complaining or anything...

Introducing constraints to the economy only serves to limit what can be economical.
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January 21, 2012, 05:33:40 PM
 #29

3 measurements to avoid beeing zhoutonged:

1. make use of STOP-LOSS orders! beeing stoped out with little loss can be really nasty some times, but it saves your butt most of the times!
2. don't over leverage and don't be greedy. there is no 100% probability of any movement - do wise riskmanagement!
3. in case you are still sure your position is right but face the zhoutonging price more and more: if you are SHORT exchange TO BTC, if you are LONG exchange to USD to minimize zhoutonging risk! (the ration of your deposit will have a big influence on your zhoutonging-risk because when you are short, e.g. your deposit increases the more BTC you hold in comparison to USD, so you can minimize your risk; but be warned that such hedges also reduce your overall profit (but since i suppose you NEVER EVER CONSIDER speculating leveraged with all your BTCs or USD you may find this advice usefull )

greets, gewure

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January 21, 2012, 06:20:24 PM
 #30

Work great here too, thank you. Could you make it also work with session login with www.bitcoinica.com? Thanks.

Thanks. I've updated the script to work with www.bitcoinica.com. Please re-download it.

could someone walk me through how to download it (on Safari if that makes a difference), I went to http://dl.dropbox.com/u/1127246/bitcoinica.user.js & see the script but have only ever downloaded things by pressing Download here buttons before, I could save it (the page?) & try & open it or something by I expect that's not how it works, sry for my tech noobness & thanks for any help

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chsados
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January 21, 2012, 10:02:10 PM
 #31

Work great here too, thank you. Could you make it also work with session login with www.bitcoinica.com? Thanks.

Thanks. I've updated the script to work with www.bitcoinica.com. Please re-download it.

could someone walk me through how to download it (on Safari if that makes a difference), I went to http://dl.dropbox.com/u/1127246/bitcoinica.user.js & see the script but have only ever downloaded things by pressing Download here buttons before, I could save it (the page?) & try & open it or something by I expect that's not how it works, sry for my tech noobness & thanks for any help

just drag and drop that file you downloaded into your browser it should install.   if you are using firefox you will need greasemonkey extension.
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January 21, 2012, 10:28:49 PM
 #32

nope I'm using Safari on  Mac & when I save the page it's just a webachive & doesn't do anything but display the same page of code as the original, I tried dragging it in to Apps & on to the browser but just the same, so I guess that I need to be using either Firefox with greacemonkey extension or Chrome to make it work, by walk through how you do this I mean for someone who only downloads via clicking the download now button on sites & knows next to nada about how the Internets & computers works, i.e. one of the non geeky 99%

Node40.com is a leader in DASH hosting, dedicated exclusively to fully managed masternode hosting. Professional, organized, and responsive. I have many dozens of nodes with them.    
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M4v3R
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January 21, 2012, 10:33:38 PM
 #33

Otoh: Safari has no greasemonkey support and afaik extension that can give it this support does not exists. There are some SIBML hacks reportedly, but there are ugly and harder to do by non-geek than just installing Chrome.

I could probably make this as Safari extension, but I don't know how to do that unfortunately.
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January 21, 2012, 11:09:15 PM
 #34

many thanks, I have Firefox + greacemonkey & Chrome, just haven't been using them hardly since I moved to Mac for the first time a couple of months ago & tend now to just stick with Safari because my Bookmarks are there & don't migrate/update to FF or CRM except for when I first loaded those browsers & are now out of date for my needs, I like the extensions available in FF a lot but have got used to having the bookmark folders above the tabs bar now & find them even more useful, I will check it out on Chrome tomorrow - thanks again

Node40.com is a leader in DASH hosting, dedicated exclusively to fully managed masternode hosting. Professional, organized, and responsive. I have many dozens of nodes with them.    
BTC = $c²     BTC = 1otohotohMoQoxHuxLBveQiZcV3Pji3Tc      DASH, Digital Cash = www.dash.org   
   CHARITY | MY REP | DICE
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January 21, 2012, 11:49:09 PM
 #35

many thanks, I have Firefox + greacemonkey & Chrome, just haven't been using them hardly since I moved to Mac for the first time a couple of months ago & tend now to just stick with Safari because my Bookmarks are there & don't migrate/update to FF or CRM except for when I first loaded those browsers & are now out of date for my needs, I like the extensions available in FF a lot but have got used to having the bookmark folders above the tabs bar now & find them even more useful, I will check it out on Chrome tomorrow - thanks again

here ill make things easy for you.  i prefer firefox mainly bc chrome has terrible adblock support.  it is really easy to transfer your bookmarks, and honestly you should get out of safari.  here are some steps to get the above to work and a few extra to keep you secure and safe, i had quite a scare last night because my roomate stupidly downloaded a virus and was afraid it could have captured my mtgox passwords and such.

1.  download firefox  http://www.mozilla.org/en-US/firefox/new/

2. import safari bookmarks
-hit the orange firefox button > bookmarks > show all bookmarks
-a window will appear and browse to import and backup > import data from another browser

3. download these extension:
-greasemonkey: https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/
-web of trust: https://addons.mozilla.org/en-US/firefox/addon/wot-safe-browsing-tool/
-adblock plus: https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/
-you can now drag and drop the zhoutonging price script into the broswer and it will install

4. to secure/encrypt your saved passwords
- firefox button > options > options
- create a master password


PS you can easily change the location of your tabs/bookmarks bar in firefox.
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January 22, 2012, 12:39:49 AM
 #36

many thanks

yep, I do have FF & added all the add ons that I enjoyed with my old Windows comp, then imported the bookmarks from Safari which has them in neat folders which is what I really liked, so I guess I'm best deleting FF & reinstalling to then get the whole new Safari bookmarks & folders imported, not sure once I do that I can keep adding folders though or adjusting their contents - will need to check it out again & it means that I'll have to install all the FF add ons again I guess

re 3 - thanks again I shall also add web of trust, the others already

re 4 - I use LastPass Pro with a Yubi key so that's covered

re PS - yep, I don't mind where it is, I just want to be able to keep sets of bookmarks in folders like Safari does

Many thanks again for helping me try & work this out, tomorrow i'll reinstall FF & try out the BTC Zhoutonging warning script, though hopefully not in rl

Node40.com is a leader in DASH hosting, dedicated exclusively to fully managed masternode hosting. Professional, organized, and responsive. I have many dozens of nodes with them.    
BTC = $c²     BTC = 1otohotohMoQoxHuxLBveQiZcV3Pji3Tc      DASH, Digital Cash = www.dash.org   
   CHARITY | MY REP | DICE
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January 22, 2012, 11:30:50 AM
 #37

Thank you Zhou.!
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