I have been enjoying with Gavin’s “bitcointools” (once more) to trace what occurred to the well-known “pizza” Bitcoins.

It seems that moderately than being uncommon collector’s gadgets, the 10,000 BTC exchanged for two pizzas have unfold out to over one million totally different Bitcoin addresses since shopping for the pizzas, not counting the dilute fragments that ended up in transaction charges.

As of block 166149, on Feb tenth 2012, 1,037,382 addresses have held the pizza cash since they had been spent. 174,584 of these nonetheless maintain pizza cash (the others could or might not be empty addresses, because it’s doable to have two totally different transactions output to the identical tackle with out the cash turning into combined collectively. In different phrases it is doable to have “pizza cash” and “non pizza cash” in the identical tackle and nonetheless be capable to inform that are which. Of the roughly 600k addresses that are presently holding funds, round 29% of them include pizza cash.

The shortest chain of transactions from the pizza buy to presently held pizza cash has size 9, and the longest has size 6,723.

There isn’t any presently unredeemed output which comprises 100% pure pizza cash. All of the pizza cash have been diluted considerably with different cash. The purest remaining are these 100 BTC that are 90.7276% pure pizza coin, and simply 11 transactions separated from the pizza transaction. (The newest 9 transactions every solely have 1 enter, so it is easy to observe it again that far. Within the subsequent transaction again the pizza cash got here from each the final however one enter, value 4223 BTC, and fifth from final enter, value 5777. Collectively these 2 inputs make up the total 100% pure 10k BTC pizza cash. The opposite inputs on this massive transaction, value 1022 BTC in whole are the one non pizza cash launched. 10000 * 100 / 11022 = 90.7276%, the purity).

I additionally checked my pockets to see if I used to be holding any pizza cash. 8 of my addresses are holding pizza cash, however very diluted. My ‘strongest’ has a purity of 1.1760%, and is a tiny withdrawal I made out of MtGox in October 2011.

Lastly, this is some information exhibiting the month-by-month unfold of the pizza cash:

pizza fee of 10000.00000000 BTC to 17SkEw2md5avVNyYgj6RiXuQKNwkXaxFyQ
is in block 57043

-block  --date--  --total--   ---used--%total-   -active---%total---%used-
 58815  Might 2010          4         2 (50.00%)         4  100.00%  200.00%
 63561  Jun 2010          4         2 (50.00%)         0    0.00%    0.00%
 71436  Jul 2010         26         8 (30.77%)        24   92.31%  300.00%
 77452  Aug 2010         34        10 (29.41%)        13   38.24%  130.00%
 82997  Sep 2010        138        37 (26.81%)       106   76.81%  286.49%
 88892  Oct 2010      2,016       265 (13.14%)     1,898   94.15%  716.23%
 94801  Nov 2010      6,295       577 ( 9.17%)     4,428   70.34%  767.42%
100409  Dec 2010      7,510       835 (11.12%)     1,464   19.49%  175.33%

-block  --date--  --total--   ---used--%total-   -active---%total---%used-
105570  Jan 2011     13,271     1,540 (11.60%)     6,150   46.34%  399.35%
111136  Feb 2011     19,055     2,632 (13.81%)     6,423   33.71%  244.03%
116038  Mar 2011     42,027     5,605 (13.34%)    24,341   57.92%  434.27%
121126  Apr 2011     69,544     9,085 (13.06%)    29,727   42.75%  327.21%
127865  Might 2011    123,997    26,032 (20.99%)    57,911   46.70%  222.46%
134121  Jun 2011    249,138    54,047 (21.69%)   132,348   53.12%  244.88%
139035  Jul 2011    382,845    93,928 (24.53%)   146,156   38.18%  155.60%
143408  Aug 2011    494,140   108,340 (21.92%)   126,134   25.53%  116.42%
147565  Sep 2011    589,942   119,491 (20.25%)   111,178   18.85%   93.04%
151314  Oct 2011    680,787   131,370 (19.30%)   105,320   15.47%   80.17%
155451  Nov 2011    780,292   142,302 (18.24%)   114,013   14.61%   80.12%
160036  Dec 2011    885,172   156,321 (17.66%)   120,631   13.63%   77.17%

-block  --date--  --total--   ---used--%total-   -active---%total---%used-
164780  Jan 2012    998,087   170,082 (17.04%)   136,985   13.72%   80.54%

166149  Feb 2012  1,037,382   174,584 (16.83%)    54,346    5.24%   31.13%

Edit: I simply discovered these 100% pure allinvain cash – undiluted after 24 hops from when 25k BTC was stolen from his laptop.

Edit 2: I do not imply to suggest that the allinvain cash have not been completely looted. They’ve touched 755,796 totally different addresses since being stolen and are presently sitting in 109,235 totally different addresses, together with 8 from my very own private pockets. The very same 8 as have pizza cash in them, it seems.