<p>You could derive this from historical price data (available via the <a href="http://bitcoincharts.com/about/markets-api/" rel="nofollow">Bitcoin Charts API</a>) and the blockchain's timestamps (extracted from the block database in your Bitcoin client's data folder).  You just need to multiply the close price for each day by the number of coins generated on and before that day.</p>

CC BY-SA 3.0
2011-11-23T21:51:44.320Z
Indeed.  But that isn't so convenient for casual observers.  I'm surprised to not yet have come across a graph of this over time, and still hope it is actually available from one of the many bitcoin data sites out there.
nealmcb
CC BY-SA 3.0
2011-11-23T20:40:48.963Z
2011-11-23T20:40:48.963Z
xyz
<p>Isn't this <a href="https://coinmarketcap.com/currencies/bitcoin/#charts" rel="nofollow noreferrer">what CoinMarketCap provides</a>?</p>

CC BY-SA 3.0
2018-01-21T15:20:53.270Z
Looks like, it, but to be most useful, answers here should actually say what it does provide, perhaps give an example, compare to the accepted answer, etc.
nealmcb
CC BY-SA 3.0
2017-12-05T12:28:56.523Z
2017-12-05T12:28:56.523Z
Internet User
<p>Is there a convenient data source and/or graph that gives the "market capitalization" over time for Bitcoin (i.e. the number of bitcoins issued to date times their current value on the big exchanges).</p>

<p>Note e.g. some publicity and attention to this issue due to the xkcd infographic on Money:</p>

<ul>
<li><p><a href="http://xkcd.com/980/" rel="nofollow noreferrer">Money - XKCD</a></p></li>
<li><p><a href="http://xkcd.com/980/huge/#x=-3822&amp;y=-7994&amp;z=6" rel="nofollow noreferrer">Zoom in to the part about bitcoin</a> or see the original version:</p>

<p><img src="https://i.sstatic.net/ppHlM.png" alt="XKCD on Bitcoin market cap (first release)"></p></li>
</ul>

<p>Note that the date indicated there for the peak so far (July 2011) is wrong, since that peak was on June 8 or 9.  It would be fun to provide some more accurate and precise numbers, though of course there is no one canonical exchange rate and some sort of weighted price may be more useful than the very highest trade recorded.  See some nearby data at:
 <a href="http://bitcoincharts.com/charts/mtgoxUSD#rg180zczsg2011-06-09zeg2011-06-11zvzlztgSzm1g10zm2g25" rel="nofollow noreferrer">bitcoin charts 2011-06-08..11</a></p>

<p><em>Update:</em> A closer look at the minute-by-minute data suggests that the peak was at     <code>2011-06-08T17:10</code>  when the mtgox USD price was $31.91.  At that point the most recent block was  <a href="http://blockexplorer.com/b/129412" rel="nofollow noreferrer">http://blockexplorer.com/b/129412</a> at 2011-06-08 16:56:29 (assuming both services are using the same timezone? UTC?).  That implies $206,476,846 I think: 31.91 $/BTC * 129412 blocks * 50 BTC/block</p>

<p>See also <del>the nice new <a href="http://bitcoinpie.com/" rel="nofollow noreferrer">Bitcoin Pie</a> site that compares market cap for various bitcoin-related currencies (and see</del> <a href="https://bitcoin.stackexchange.com/questions/1385/is-there-an-easy-way-to-check-out-the-market-cap-of-the-alternative-currencies">Is there an easy way to check out the market cap of the alternative currencies? - Bitcoin - Stack Exchange</a>).</p>

CC BY-SA 3.0
2011-11-24T04:26:55.780Z
+1 BTW, Bitcoin Pie is open source. If anyone would like to contribute code to show historical graphs, he's welcome to do it.
ripper234
<exchange-rate><market><bitcoin-economy>
"Market capitalization" over time
nealmcb
# "Market capitalization" over time

(Asked by: username_0 on 2011-11-23)

Is there a convenient data source and/or graph that gives the "market capitalization" over time for Bitcoin (i.e. the number of bitcoins issued to date times their current value on the big exchanges).

Note e.g. some publicity and attention to this issue due to the xkcd infographic on Money:

* [Money - XKCD](http://xkcd.com/980/)
* [Zoom in to the part about bitcoin](http://xkcd.com/980/huge/#x=-3822&y=-7994&z=6) or see the original version:

  ![XKCD on Bitcoin market cap (first release)](https://i.sstatic.net/ppHlM.png)

Note that the date indicated there for the peak so far (July 2011) is wrong, since that peak was on June 8 or 9. It would be fun to provide some more accurate and precise numbers, though of course there is no one canonical exchange rate and some sort of weighted price may be more useful than the very highest trade recorded. See some nearby data at:
[bitcoin charts 2011-06-08..11](http://bitcoincharts.com/charts/mtgoxUSD#rg180zczsg2011-06-09zeg2011-06-11zvzlztgSzm1g10zm2g25)

*Update:* A closer look at the minute-by-minute data suggests that the peak was at `2011-06-08T17:10` when the mtgox USD price was $31.91. At that point the most recent block was <http://blockexplorer.com/b/129412> at 2011-06-08 16:56:29 (assuming both services are using the same timezone? UTC?). That implies $206,476,846 I think: 31.91 $/BTC \* 129412 blocks \* 50 BTC/block

See also ~~the nice new [Bitcoin Pie](http://bitcoinpie.com/) site that compares market cap for various bitcoin-related currencies (and see~~ [Is there an easy way to check out the market cap of the alternative currencies? - Bitcoin - Stack Exchange](https://bitcoin.stackexchange.com/questions/1385/is-there-an-easy-way-to-check-out-the-market-cap-of-the-alternative-currencies)).

**Tags:** exchange-rate, market, bitcoin-economy

> **Comments:**
> **username_1**: +1 BTW, Bitcoin Pie is open source. If anyone would like to contribute code to show historical graphs, he's welcome to do it.  

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## 2 answers

### Answer by username_2 on 2011-11-23. Score: 1

You could derive this from historical price data (available via the [Bitcoin Charts API](http://bitcoincharts.com/about/markets-api/)) and the blockchain's timestamps (extracted from the block database in your Bitcoin client's data folder). You just need to multiply the close price for each day by the number of coins generated on and before that day.

> **Comments:**
> **username_0**: Indeed.  But that isn't so convenient for casual observers.  I'm surprised to not yet have come across a graph of this over time, and still hope it is actually available from one of the many bitcoin data sites out there.  

---

### Answer by username_3 on 2017-12-05. Score: 1

Isn't this [what CoinMarketCap provides](https://coinmarketcap.com/currencies/bitcoin/#charts)?

> **Comments:**
> **username_0**: Looks like, it, but to be most useful, answers here should actually say what it does provide, perhaps give an example, compare to the accepted answer, etc.  

---

