[DCX] The Digital Currency Index Project

[killerstorm]

It would be cool if you also display relative price difference for each security in this index.

For example, currently it is down: -4.61%, but to see what happened I need to go to btct.co, and as it uses different time reference, it isn't easy to see how change is explained.

[Smidge]

It would be cool if you also display relative price difference for each security in this index.

For example, currently it is down: -4.61%, but to see what happened I need to go to btct.co, and as it uses different time reference, it isn't easy to see how change is explained.

Hi killerstorm,

Exactly right. There is currently no reference to what is exactly causing the index deviation and you have to look for it manually. I am working on this as we speak, thanks a lot.

[Smidge]

DCX and Smidge.Com A (re-post from Smidge.Com thread)

I would like to clarify that Smidge.Com A is not an ETF on the DCX index and does not map or try to map its performance in any way.

• DCX is a reference index that displays the performance of the securities with the highest market cap, to provide an indication of "The Market"
• Smidge.Com A is a fund that I actively manage myself, that invests into a broad range of securities and aims to beat "The Market"

[Smidge]

It would be cool if you also display relative price difference for each security in this index.

For example, currently it is down: -4.61%, but to see what happened I need to go to btct.co, and as it uses different time reference, it isn't easy to see how change is explained.

Hi killerstorm,

Exactly right. There is currently no reference to what is exactly causing the index deviation and you have to look for it manually. I am working on this as we speak, thanks a lot.

done

[eltopo]

When prices change, the market cap and % of Index change as well. The market cap should be calculated by price * outstanding shares.

[killerstorm]

It would be cool if you also display relative price difference for each security in this index.

For example, currently it is down: -4.61%, but to see what happened I need to go to btct.co, and as it uses different time reference, it isn't easy to see how change is explained.

Hi killerstorm,

Exactly right. There is currently no reference to what is exactly causing the index deviation and you have to look for it manually. I am working on this as we speak, thanks a lot.

done

Thanks, this is great!

[Smidge]

When prices change, the market cap and % of Index change as well. The market cap should be calculated by price * outstanding shares.

Hi eltopo,

You are referring to the market cap being a function of the number of shares times the current share price, hence being dynamic at all times.

I agree that this is an important consideration, but currently I tend to simplify it by resetting the market cap manually (because it is a source of error). It is on the todo list though and will be implemented down the road. Thanks.

[lubah]

Anyone have a realistic description of all relevant securities out there with their number of shares and market cap? I am currently only accumulating data from btct.co. The goal would be to create a waterproof composition of the index to really have it reflect and be regarded as "The Market".

This is great - I started a similar thread : https://bitcointalk.org/index.php?topic=267682.0 to attempt to put a valuation on  some of these 'things' listed on bitfunder - would be happy to collaborate with you on your DCX initiative -- kinda like the djia and the nasdaq of bitcoins - love it!

[parseval]

Highly interesting. I need a more flexible charting engine (ClarkMoody style would be awesome), plus focus on getting historical data in there as a priority.

....

I think historical data is a quick win, plus I received the suggestion to add Moving Averages.
Get data from other exchanges would increase the number of price fixings (=liquidity).

I can provide you with historical JSON trade data from the Coinflow site.  It has several months worth of bitfunder, havelock, and MPEX data pulled from IRC bot logs, since these sites don't have APIs with historical data.

Just replace '/chart/' in the URL of any page with '/json/' for the JSON data.

For example, any bitfunder JSON is at /json/BF/<tickername>, for example, http://coinflow.co/json/BF/TAT.ASICMINER

I might work on creating a more complete export if there's demand for it...  I record whether it's a bid or ask, but that's not in the JSON currently.

[Smidge]

I can provide you with historical JSON trade data from the Coinflow site.  It has several months worth of bitfunder, havelock, and MPEX data pulled from IRC bot logs, since these sites don't have APIs with historical data.

Just replace '/chart/' in the URL of any page with '/json/' for the JSON data.

For example, any bitfunder JSON is at /json/BF/<tickername>, for example, http://coinflow.co/json/BF/TAT.ASICMINER

I might work on creating a more complete export if there's demand for it...  I record whether it's a bid or ask, but that's not in the JSON currently.

Hi parseval,

Interesting, thanks a bunch. Once I have a solid charting engine up an running, I will move to importing historical data.

[dexX7]

For example, any bitfunder JSON is at /json/BF/<tickername>, for example, http://coinflow.co/json/BF/TAT.ASICMINER

Hi parseval,

thanks (again). What I would like to have though is the number of outstanding shares of the past. This numbers can only be calculated for BF, as BTC-TC keeps an every-day-backup of their shareholders list.

I want to learn more about the Laspeyres method in real finance, because it seems it's a bit more tricky than using the formula with tick (or hour) data and previous tick (or hour) data. p0 doesn't have to use the last-tick-cap-data which I assumed, but can use an older value as basis. For example the basis value could be the end-of-day capitalization sum of the day (or month, or..) before. Here is a detailed paper about the DAX as input, which uses this approach.

Another approach I will test in the next days is to use the sum of market capitalization (BSI in my last post), but with a volume based averaged price. This should prevent that a very small change in price leads to huge changes in the index value.


Some more brainstorming:

• Create an index for each exchange with (almost) all securities?
   
• Create an index in which more than one exchange is included?
   
• Only include the n most capitalized companies either for one or more exchanges?
   

[casinobitcoin]

Wow!!! Nice work Smidge !

[Smidge]

DCX is tanking today, -9.92% atm.

BASIC-MINING (-40%), COGNITIVE (-15%) and ASICMINER (-11%) being among the biggest losers.

[zefyr0s]

What determines the securities that make up DCX?

[Progressive]

Maybe there could be also displayed change in BTC/USD rate (just for reference). Today it fell 5%, that's one of the reasons for the market crash - people cashing out USD.

[Smidge]

What determines the securities that make up DCX?

Hi zefyr0s,

It's primarily market cap. If it's non-mining, I would prefer it though even with smaller market cap to make the index more independent from mining ventures. The API of the exchange that it is listed on also plays a role currently. I am currently figuring out the Bitfunder (beta) API in order to add LabRatMining to the index next.

[Smidge]

Maybe there could be also displayed change in BTC/USD rate (just for reference). Today it fell 5%, that's one of the reasons for the market crash - people cashing out USD.

Hi Progressive,

Of course BTC/USD is the single most important figure (and reference!). Will do, thanks.

[Smidge]

Hi everyone,

Because I will be focusing all my time and energy on the Smidge.Com A fund, I would like someone to take over the DCX Index or at least the idea. I am willing to share the source code, detailed formula and data, etc. if someone agrees to give it a new home and continue it.

Please let me know if you are interested. I think the digital currency community needs a reference index and if it is well composed, with enough (historical) data and professionally managed, it can become the single most important figure besides BTC/USD.

[boyohi]

What determines the securities that make up DCX?

Hi zefyr0s,

It's primarily market cap. If it's non-mining, I would prefer it though even with smaller market cap to make the index more independent from mining ventures. The API of the exchange that it is listed on also plays a role currently. I am currently figuring out the Bitfunder (beta) API in order to add LabRatMining to the index next.

Any particular reason why you use bitfunder over other exchanges?

Edit: What I mean to ask is, do you use one exchange or several exchanges to determine the value and market cap.

[xaviarlol]

Hi Smidge,

Do you have plans to add a graph that can be time-period-defined? Eg. 7 days, 30 Days, 3 months, 6mths, 1 year etc etc. That would be really helpful.