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81  Bitcoin / Development & Technical Discussion / Re: What address displays when you send a coin? on: June 08, 2011, 04:12:02 PM
Actually, I think you can control the address that you send from if you use "bitcoind.exe" with the command "sendfrom". https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_calls_list
82  Other / Obsolete (buying) / Re: will pay 2 BTC for 1 BTC with traces of that pizza on it on: June 07, 2011, 06:22:38 PM
edit: if i wanted moar, let's say 50, would you ask for 51 or for 100?
i was lucky with zimbabwe dollar exchange so i have a few bitcoins i can put aside and never use

Well, I only have 3.5 to give, but if you wanted it, I suppose I'd be willing to trade for 4.5.
83  Bitcoin / Bitcoin Discussion / Re: Bwtween 17-18 dollars the last several days on: June 06, 2011, 11:23:25 PM
As much as I'd like to see the value of my current holdings go up, I honestly think that a little short-term stability would do some good. People don't seem as willing to trade with their Bitcoins now, at least compared to a month ago when I first joined.
84  Other / Obsolete (buying) / Re: will pay 2 BTC for 1 BTC with traces of that pizza on it on: June 06, 2011, 11:10:55 PM
Just to be clear, whenever you're ready, I will send 1 BTC (or however much you want... the prices have been pretty crazy lately) from my account with the T-shirt coins (the ones at the end of that huge chain I posted earlier in the thread), to another one of my addresses (just so I can make sure that the chain looks good), and then I'll send from that address to yours. So, all you'll need to do is add two more transactions to make a grand total of 77 transactions from the legendary pizza to you. Grin
85  Other / Obsolete (buying) / Re: will pay 2 BTC for 1 BTC with traces of that pizza on it on: June 06, 2011, 01:17:50 PM
Ok, just tell me what address to send it to.
86  Other / Obsolete (buying) / Re: will pay 2 BTC for 1 BTC with traces of that pizza on it on: June 03, 2011, 07:10:14 AM
Oh ok, sweet, care to share?

Ok, copy all the files into the bitcointools folder:

This one is a small modification to a bunch of functions found in bitcointools that makes my life easier: http://dl.dropbox.com/u/28441300/deserialize_unfinishe.py

Here is the first program that I used to find out whether any of my unredeemed coins were actually descended from the pizza transaction: http://dl.dropbox.com/u/28441300/bitcoin_descendants.py

Next, seeing that I had some at one of my addresses, I made another program to find the exact path:
http://dl.dropbox.com/u/28441300/bitcoin_descendants_pizza.py

It's kind of sloppy (I wasn't planning on releasing it), so you'll have to change a few things to use it for a more general case (parent_block, parent_transaction, my address, the restriction for only transactions with 1 BTC or more).
87  Other / Obsolete (buying) / Re: will pay 2 BTC for 1 BTC with traces of that pizza on it on: June 03, 2011, 06:42:32 AM
how on EARTH did you manage todo that...

I sure as hell didn't do it by hand. Cheesy

I did it by making a python script, largely based on bitcointools
88  Bitcoin / Bitcoin Discussion / Re: Introduce Yourself on: June 03, 2011, 06:38:01 AM
Hi everybody! I'm unfinishe(d). I'm a young college student, I'm pretty much broke, and I'm overwhelmed by how much I have yet to learn about the world and figure out about myself (hence the name). I do programming for fun, especially crazy projects like tracing my coins all the way back to the 10,000 BTC pizza. You might see me around the forums doing whatever I can for BTC.

89  Other / Obsolete (buying) / Re: will pay 2 BTC for 1 BTC with traces of that pizza on it on: June 03, 2011, 06:26:18 AM
I finally managed to figure it out! Grin

Here is a 75-long chain of transactions all the way from the pizza exchange to the coins I got for the "cryptographic keys" T-shirt at Square2Wear (which I still have). Obviously there's a lot of mixing due to multiple inputs, so it isn't strictly speaking "pure", but I hope that is forgivable. Are you ready?

http://blockexplorer.com/tx/a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d#o0 <== Original Pizza Transaction
http://blockexplorer.com/tx/cca7507897abc89628f450e8b1e0c6fca4ec3f7b34cccf55f3f531c659ff4d79#o1
http://blockexplorer.com/tx/9e744590d196b63d02a1dd7ef596fd6082286f84295d66da411a9ffebfdd1957#o0
http://blockexplorer.com/tx/1d001840a1eccd2d3f0505a6b54d60812cf9295a08a1afc48871cf21ad1147f8#o0
http://blockexplorer.com/tx/6ac97d586d1bbcc71d5d735bacd4535a7bbfb5cb074eb7b562d7a49c258a61fa#o0
http://blockexplorer.com/tx/967e8c36a633d2451525f4a833c2fa7574f8f56932bc3d6e939c5a624cebf60d#o1
http://blockexplorer.com/tx/fae1d55a6d983536a2a34515d2dcc67f92e4535f645a82eded11e6ee3c19399e#o1
http://blockexplorer.com/tx/54d5f507d301a392f400c21b36eeba7f40446a45654de52f30cb291321d5d5e1#o1
http://blockexplorer.com/tx/c4f51349d554340d683bc273d0d2ce05e36d53eb201e38fc860e60c1c439b1f1#o0
http://blockexplorer.com/tx/046f4f443e80f691a1761c2fbf71d4a06cca94bf65e7e42465dce871f31ccfed#o1
http://blockexplorer.com/tx/f772f378ef4da61cf1c9c085ececf64a18228596f4f5a72566ac16991a52f707#o1
http://blockexplorer.com/tx/3230867e41ea13c6084792fb7e08695c933c8ac4225edfaab1aa746cf7fcf015#o1
http://blockexplorer.com/tx/500668aba996714527323dfbe7d57c50a688ce284b52b02f1316f418d3422d22#o0
http://blockexplorer.com/tx/b69cd57181261cac7f894add1b08809796ad17335c96d708ae9093f8d59f4972#o0
http://blockexplorer.com/tx/92d7049d20dc837bf57a7e30a0929f86c2676cdabb35022a62ca008aead3557c#o0
http://blockexplorer.com/tx/251fd4a6cd5857abbd1b56713f0ba453b85af1e0757ae9ce5a3214ade944361f#o0
http://blockexplorer.com/tx/7198a39670fe6cfd329104d0113045cbf66460c8e9bdb7235f7d6d9064353f41#o1
http://blockexplorer.com/tx/82bf4360e8b8364587835791a836b8a0d0bce6d1cd2a8bca9b1bc3f2395daacf#o1
http://blockexplorer.com/tx/dbd77823ddec2575bfc667d03b32f5b6a0b054f90bd33319e9661c616d894593#o1
http://blockexplorer.com/tx/95e6e6712cb00443effa93041f00730ffdbb9772b3b9b38801d453521829cf52#o1
http://blockexplorer.com/tx/2c075e3f7c27cdeb5ea321783a10f2907c081203325b62ed24afe1dbcdd1c4ce#o0
http://blockexplorer.com/tx/b1b3b5cc900ad3080a7b82af8f4bd2555cf63dc571ed17b7a1ea2b760143c147#o1
http://blockexplorer.com/tx/8a2facfb4451caa76466e0f71af18b3ef98bc4c6934f469a91956536fd5cb63c#o0
http://blockexplorer.com/tx/07ffb3bb978e043e50ae3ae37826fa374fa91fb5bdeff72504a845211ea54db2#o0
http://blockexplorer.com/tx/bdc390e4285a1912a5e15bff4696002f1427789150cdb839773165f57bfae4cb#o1
http://blockexplorer.com/tx/5b54880ab2ccbc6288d2ac8f8ba9aca77e2dc2d5724825c280f510cf3a614732#o0
http://blockexplorer.com/tx/f0e5bc7f13b6d25824ee3b7abdcdba4053fdf39220332709d9ccfe5b92e7b824#o0
http://blockexplorer.com/tx/e543ff0d21b0b9e0e939bab6c169e7525bc7f6686d1e33620c77391cabe1d8dd#o0
http://blockexplorer.com/tx/988c68924bd95ac551b72c349099d752101cf9fc4327991de55f42a8ad6c7a45#o0
http://blockexplorer.com/tx/4263803b5c8381b13584d3d09ec5a8068b8abf17ab4e8000ee43bac39754020e#o0
http://blockexplorer.com/tx/1ceadf6c64370835db27b2e2c72138465b31de093ce5a224f15c59a92dffc891#o0
http://blockexplorer.com/tx/775d9c66e350b0c6c1ac21f41f3db86a3554d762538539aa324e4543bf25f7d6#o0
http://blockexplorer.com/tx/00b5017350b3e9e292cbda1631deff77144f273ae8cd17efef70607168d97234#o0
http://blockexplorer.com/tx/dbe7131d4b3ae79f3970dc0c6b31e7b85392981167e8f28f9e06f8d92de83bd2#o0
http://blockexplorer.com/tx/e9c517c03bc92076b8574b67f82459596154cc86de135ad42454e84889fbfcb7#o1
http://blockexplorer.com/tx/1ad202c987919914245e9a4c440a8e5e6a5facd050337d2247ccec70ae0928ab#o0
http://blockexplorer.com/tx/948e52394455e8e4f0844ab4d464b962b8c643cbb311d9c1f29a759cf9a850c4#o0
http://blockexplorer.com/tx/831408bf9f4913847cc6eb6802842aa992187e154a1649bab6fbf36038c89f6b#o0
http://blockexplorer.com/tx/ebf5e19b74db2a96cd97eb7ddbe0edc1e5924e6e1fa2cb7815e7485522ebcbe5#o0
http://blockexplorer.com/tx/ab14ce0419bd775b158467dee138305d6882216e474a850b2442eca002b05153#o0
http://blockexplorer.com/tx/5135d6d6e828a30c5fcfc42e8d88c0bb3b9f3c564c0ad62b43a6f549c62cffb6#o0
http://blockexplorer.com/tx/29fced924f03205d8045b374febcf7d142bc2d8d11eb17eec585f9a377e1ab0b#o0
http://blockexplorer.com/tx/71887816e604da04819bb6d09f6aa43f692cad68529e6bf00e39f587580c667d#o0
http://blockexplorer.com/tx/41d54ae86bb4b67c71171e57acec414072e491b1e968496b7fbdc3701e932723#o1
http://blockexplorer.com/tx/5836ef42d4b41d6ddd4ad95bcc1c0d1ffd02d9a7a3468391155dee16a75e8a8a#o1
http://blockexplorer.com/tx/8ea436d71d500a25806c297f597428cd78a2479d296a128cfce095155261c0d6#o9
http://blockexplorer.com/tx/b722b28286f667b5093dd43a20c3497e866bbfc722167fa49cc5ba5fb32dcd61#o0
http://blockexplorer.com/tx/f6a4c21147164458704eb6edeae769e0612cd350a25ef6d4ca21d0da1be308f4#o0
http://blockexplorer.com/tx/a5981f5f682dd8e4e2827e8c2ae380c72b3dc30703c472f0e077edcecd605993#o0
http://blockexplorer.com/tx/75ecac905348ea1c2299070167e4e6233f50ae680e3e5f43b9e359708aab8fb5#o0
http://blockexplorer.com/tx/a521ea79c72d2bcdd271b9f5a83bd62e9be96be853ef7075058a9ef16e904f65#o0
http://blockexplorer.com/tx/f0bc8f93817f5efad538ea35558a14e66e2455f5125bade0e339c37ecc1e6bda#o0
http://blockexplorer.com/tx/b7b6c132e7b201d90104c2db6e444694bfc50eb0953fe2c6c3d0e033712a348c#o0
http://blockexplorer.com/tx/f719c506d86a23606092f805189f8203733ceefebca361fe636d79ae784465cc#o0
http://blockexplorer.com/tx/465e47410d55e45270114e3fe4b5d9197f9c115fabeb4f12bbb66a15f1e8dbbf#o0
http://blockexplorer.com/tx/897a7407d2d58d5d3c9269c65403c8fb530f74787f45e9b46f63ec22860ffba9#o0
http://blockexplorer.com/tx/66a610459eb27d08105639b68a26ec9275ce1d5723c177c3ba9f15f5d253efc2#o0
http://blockexplorer.com/tx/3d61590c2b7b6f330ddd99b78884e136fefde11624378287edbe44188f637939#o0
http://blockexplorer.com/tx/92d5e92bfc116adc371d3bc90edff001b57b512abdb72a416c3218be870b2a09#o0
http://blockexplorer.com/tx/04eafd1b7f410cd7dcbf44d33d72343a5b7623db3fb0a11a312a0421003d7bea#o0
http://blockexplorer.com/tx/efacf2bb9d6c34c0416c9a4e13489d9fc63166fb8801fb57b5b313a99ac197aa#o0
http://blockexplorer.com/tx/5bbc4f9a9088ea1501b26d6f6249d5a6739366ee0946c0301ed93a62a4b2ca59#o0
http://blockexplorer.com/tx/eeb302ad6273ba1dc81b1085c6afa058075036510c121f01309acc38f2be9fbd#o0
http://blockexplorer.com/tx/7dcc160a0f429ab3511fecff5cdd7db3b30c1ded7b9f680e8ae6b313caa7d1d3#o0
http://blockexplorer.com/tx/fa04d7cc7ac03f06fc6c6710b90cd26ae64bb1bcdf5c297b4c7d1c8d7bd093fe#o0
http://blockexplorer.com/tx/803de6605de761b92eeeb58f8f30862e73050c1ee7cb8586a7abc9925135d519#o1
http://blockexplorer.com/tx/bc4e39854ddce83c68b6c6001c9a0e353ef0255779d4d5bac6dcf4cc673d9983#o0
http://blockexplorer.com/tx/3004d72fbd7242d487cb657e78baafc68523061c82ae41fba46cfde325ef1297#o1
http://blockexplorer.com/tx/963d4efe18f3b1a44939374998e5fcbafd3d05f1c30f1179da97f5de179ceb72#o0
http://blockexplorer.com/tx/a34adcc72cc738c54fb46000ad4d5a590d43a36c7964ac90564776d2a213e08a#o0
http://blockexplorer.com/tx/909730039a110c6a415abaaa98b81f2dfc137bc989018cb894f0fde2bc870992#o0
http://blockexplorer.com/tx/fdb12fec4141875bc08d794c0bf0a5ff01bf22f5322863797ba6ea8f4ba5b79b#o1
http://blockexplorer.com/tx/2a85b1092ae9c4eb9490af4098d394113a86a7373768462cb410ada2b450f6a7#o1 <== My coins

Phew!
90  Bitcoin / Bitcoin Discussion / Re: List of every unredeemed transaction: Age of every bitcoin ever on: June 02, 2011, 05:45:29 AM
Like I've mentioned before, it's impossible to know whether Bitcoins are lost or not, but looking at the last graph (% in circulation), it's apparent that a large part of the BTC mined initially were permanently kept out of circulation (presumably lost). However, as the months went on, the coins in circulation tended to carry over to the following month. (Note that it's also impossible to distinguish whether the coins actually changed hands or were laundered or shuffled about, but I doubt that those activities comprise a significant percentage.)

For about a year, only 10-20% of the Bitcoins in circulation were completely hoarded away during any particular month. However, this percentage has gone up, likely due to the sudden changes in value. Nonetheless, nearly 70% (about 1.1 million) of the Bitcoins in circulation in April were eventually exchanged during May, so I believe that's a good sign.
91  Bitcoin / Bitcoin Discussion / Re: The Bitcoin Sun Super Promotion Giveaway [0.10 BTC x 100] on: June 02, 2011, 05:43:15 AM
For some reason, it feels kinda weird to just link to the main site. If there was a way to link to individual articles, I'd rather put a link to my favorite one in my signature. It just seems more personal.
92  Bitcoin / Bitcoin Discussion / Re: List of every unredeemed transaction: Age of every bitcoin ever on: June 02, 2011, 05:24:44 AM
Shouldn’t it be redeemed and not unredeemed Bitcoins per month then? I’m confused.

When a new transaction is created, the network has to go back to previous transactions and redeem them so they can't be used anymore. I looked back through the chain to see all the unredeemed transactions (i.e. all of the currently "existing" Bitcoins). During each month, there are a number of Bitcoins that were generated or sent back then but never used again, and these are the unredeemed Bitcoins. Someone has either been hoarding these Bitcoins for a long time or they're lost forever.
93  Bitcoin / Bitcoin Discussion / Re: List of every unredeemed transaction: Age of every bitcoin ever on: June 02, 2011, 05:00:18 AM
So for instance only ~1.5 out of 6.4 million BTC have not been spent in May? That’s pretty good actually …

It means that 1.5 million were last spent in May. The rest of the Bitcoins out there have remained stagnant in people's wallets for over a month.
94  Bitcoin / Bitcoin Discussion / Re: List of every unredeemed transaction: Age of every bitcoin ever on: June 02, 2011, 04:57:35 AM


I realized that it might make more sense to account for the unredeemed totals from previous months when calculating the running total. So here is the percentage of unredeemed BTC during a particular month, compared to the total Bitcoins in existence at the end of the month minus the past unredeemed totals (i.e. the total still in circulation carried over from the month before plus the total added by mining).
95  Bitcoin / Bitcoin Discussion / Re: List of every unredeemed transaction: Age of every bitcoin ever on: June 02, 2011, 04:44:05 AM


Here is a running percentage of the unredeemed Bitcoins for a particular month compared to the total in existence at the end of that month.



Here is the percentage of unredeemed compared to the current total in existence.
96  Bitcoin / Bitcoin Discussion / Re: List of every unredeemed transaction: Age of every bitcoin ever on: June 02, 2011, 03:57:35 AM


Here is a graph showing the amount from each month that hasn't been spent yet. Overall, it's a pretty even distribution until the current year. I'd imagine that a fair amount of these early Bitcoins are lost or forgotten, but as the value has skyrocketed recently, people are holding on to them a little more. Still, a large amount is in current circulation, which I think is a good sign for the future.
97  Bitcoin / Bitcoin Discussion / Re: The early Bitcoins generated by the founders are lost or not? on: June 02, 2011, 02:35:17 AM
Well, I was curious about this question myself, so I've been working on programs to see how the early mined coins have been used. Based on my work here, http://forum.bitcoin.org/index.php?topic=11171.0 , there are an awful lot of early coins, approx 2.5 million BTC, that haven't been touched since they were first mined. Now, even though they're not in circulation, it's impossible to know whether many of those are actually lost or not, but I honestly think a lot of people would have cashed out by now.
98  Bitcoin / Bitcoin Discussion / List of every unredeemed transaction: Age of every bitcoin ever on: June 01, 2011, 11:25:59 PM
After using Gavin's bitcointools to work on the Days Destroyed problem (http://forum.bitcoin.org/index.php?topic=9300.0 ), I just had too much fun doing it, so I got to work playing some more with the data.

This might have been done before, but I have made a program to find every single transaction output that is unredeemed. Basically, I made a list of every Bitcoin currently in existence and the addresses that they were last sent to.

The code is here: (Just copy these into the bitcointools folder and run bitcoin_age)
http://dl.dropbox.com/u/28441300/bitcoin_age.py
http://dl.dropbox.com/u/28441300/deserialize_unfinishe.py

The results are here:
http://dl.dropbox.com/u/28441300/output_age.xlsx

One thing I thought was interesting was that 3.2 million BTC (nearly half of all current Bitcoins) have not moved this year.

Have fun interpreting the results! Tongue
99  Economy / Marketplace / Re: Introducing SquareWear.biz, a bitcoin only apparel store on: June 01, 2011, 06:46:58 PM
It's blowing my mind right now that people around the world are actually wearing t-shirts that I had a small part in coming up with. Grin
100  Other / Obsolete (buying) / Re: multiple miner/python software error paying bounty to fix!! on: May 31, 2011, 05:28:28 AM
Unfortunately the error message appears to be an extremely vague and useless one, so it's hard to know what exactly is going on just from that...

It seems that others have had trouble with 4 GPU's. This poster got it to work by putting the first two in a Crossfire configuration and dummy-plugging the other two: http://forum.bitcoin.org/index.php?topic=7542.msg110802#msg110802
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