還記得那位，花了10000個比特幣買披薩的程序員嗎？
今天又看到有回答提到2010年的時候，有個程序員花了10000比特幣買了兩張匹薩的事情。這被認為是比特幣的首筆現實交易。
看著現在比特幣的行情，10000比特幣就是一個億美元。於是我便好奇這位程序員會是什麼心情，於是去查了一下這位主人公Laszlo Hanyecz。
在2010年5月18日，Laszlo在比特幣論壇Bitcoin Forum上發表了一個對後世影響深遠的帖子
—— ”披薩換比特幣？“
Pizza for bitcoins?bitcointalk.org
May 18, 2010, 12:35:20 AMI'll pay 10,000 bitcoins for a couple of pizzas.. like maybe 2 large ones so I have some left over for the next day. I like having left over pizza to nibble on later. You can make the pizza yourself and bring it to my house or order it for me from a delivery place, but what I'm aiming for is getting food delivered in exchange for bitcoins where I don't have to order or prepare it myself, kind of like ordering a 'breakfast platter' at a hotel or something, they just bring you something to eat and you're happy!
（省略...關於他喜歡的披薩食材）
Thanks,
Laszlo
大意是Laszlo希望用10000比特幣去換一些披薩，最好是兩塊大的，讓他可以留到第二天再吃一頓。願意交易的人可以自己做兩塊披薩，也可以去披薩店買兩塊，然後讓外賣小哥送到他家。
May 18, 2010, 06:42:11 PMbitcoin2paysafe：In which country do you live?
發帖六個小時後，有人問Laszlo住在哪個國家。
May 18, 2010, 06:46:48 PMlaszlo：
Jacksonville, Florida
zip code 32224
United States
Laszlo回答到，在美國佛羅里達州的Jacksonville（注：離我好近啊）。
May 18, 2010, 07:01:50 PMender_x：
10,000... Thats quite a bit.. you could sell those on https://www.bitcoinmarket.com/ for $41USD right now..
good luck on getting your free pizza.
接著有人表示，如果Laszlo可以把這些比特幣賣41刀，所以這筆交易並不划算。
May 21, 2010, 09:33:45 PMlaszlo：I just think it would be interesting if I could say that I paid for a pizza in bitcoins
但這並沒有改變Laszlo的決定，他解釋道他覺得可以用比特幣買披薩是一件很酷的事情。
May 22, 2010, 07:17:26 PMlaszlo：I just want to report that I successfully traded 10,000 bitcoins for pizza.
Pictures: http://heliacal.net/~solar/bitcoin/pizza/
Thanks jercos!
發帖後的兩天，Laszlo興奮的告訴大家，他與一位叫做Jercos的程序員達成了交易，用10000個比特幣換到了想要的披薩。他還把披薩照片發到了網上，還表示自己一歲的女兒對這些披薩非常滿意。
Laszlo發佈的披薩照片，史上最貴披薩真容。在論壇上，Laszlo還搞怪的表示，只有披薩是比特幣換的，小孩是他自己的。
May 22, 2010, 10:10:25 PMsirius：Congratulations laszlo, a great milestone reached
當時就有人非常精準的意識到，這次交易將會是是一個偉大的里程碑。
Laszlo購買披薩的交易記錄
比特幣的每一筆交易都是透明的。根據Laszlo提供的地址，我們可以查到這筆交易的具體發生時間是2010年5月22日的晚上18：16。
後來的劇情我們都知道了，比特幣的價格一路瘋漲。
August 04, 2010, 02:33:01 PMknightmb：$600 is a great deal for pizza I thought?
於是乎這個本來只有13個回覆的墳貼開始陸續被人挖墳，比如過了兩個多月就有人問到，600刀買的披薩怎麼樣？
November 29, 2010, 10:58:22 AMbitcoinex：Greetings from November 2010!
What's is it eat pizza for $2600?
又過了三個多月，又有人問2600刀的披薩好吃嗎？還有人問道，這披薩會有一天價值百萬嗎？
April 24, 2011, 02:33:19 AMLittleshop：Someone could write a story about the $18,000 pizza!
很快比特幣的價格突破1刀，披薩總價高達18000刀。
這期間Laszlo本人除了跟大家討論挖礦外，也回應過披薩的問題：
August 04, 2010, 05:51:05 PMWell I didn't expect this to be so popular but I can't really afford to keep doing it since I can't generate thousands of coins a day anymore Smiley Thanks to everyone who bought me pizza already but I'm kind of holding off on doing any more of these for now.
大意是他自己也沒想到搞了這麼個大新聞，但他現在吃不起這種披薩了，因為現在挖礦變難了，他無法再每天挖出幾千枚比特幣了。
February 14, 2014, 02:17:19 PMI mean people can say I'm stupid, but it was a great deal at the time. I don't think anyone could have known it would take off like this.
大意是人們可能會說做了這筆交易的我是個笨蛋，但在當時誰也沒意料到比特幣會變得這麼值錢。
February 14, 2014, 04:28:36 PMThe people I traded with didn't know it was going to explode either, they just took a risk - spending their 'real' money to buy some guy pizza in exchange for some internet Monopoly money.
Laszlo很讚賞第一批接受比特幣交易的人，認為他們冒著風險，用”真金白銀“去換這些虛擬貨幣。
February 14, 2014, 05:21:41 PMI heard from one person who bought a house with their pizza bitcoins, indirectly, by trading it for cash first. I wish I could say I did the same, but the pizza didn't appreciate the same way as the bitcoins
Laszlo說他聽說過有人用披薩換來的比特幣購買了房子，他也希望自己能這麼做。
February 14, 2014, 09:52:18 PMOther than a little bit of single digit change, I spent everything I mined. As you all know, the difficulty rises to adjust to hashing power, so eventually the mining wasn't worth it for me.
Laszlo說他已經花光了所有挖到的比特幣。現在比特幣越來越難挖了，他覺得個人不值得再去挖礦了。
Laszlo在論壇的最後發言截至在2014年2月20日，不知道他現在怎麼樣了。根據他公開比特幣錢包顯示，他一共搞到過八萬多枚比特幣，但現在賬面已經為零。但由於比特幣的匿名性，所以無法得知Laszlo是否還有其他的比特幣錢包。但根據他本人的說法，他已經沒有多少比特幣了。
可能有人會好奇，Laszlo是如何搞到這麼多比特幣的呢？
I generated my share and I spent it, it was just at a time when the value was lower, but so was the generation difficulty, and the block reward was 50.
As far as I know I was the first to release a GPU miner.
他自己也解釋了，當時比特幣不值錢，所以挖的人少，因此難度也低。而且他們那個時候挖到一個區塊的獎勵是50個比特幣。此外，據他所知，他自己是第一個用GPU挖礦的人。
這裡我補充一下，比特幣會根據挖礦者的總算力調整挖礦難度，使得無論挖礦的人有多少，比特幣區塊生成的時間控制在十五分鐘左右。Laszlo作為最早的一批挖礦者，他們那個時候很容易挖到礦。
記錄比特幣交易的單元叫做區塊，最開始沒挖到一個區塊會獎勵礦工50個比特幣。每挖出21萬個區塊後獎勵會衰減一半，目前已經挖出了51萬個區塊，所以獎勵衰減到了50/2/2=12.5比特幣。
總結下就是Laszlo入行早，那時候挖礦容易而且獎勵多，所以如他所說他一天就能挖到幾千枚比特幣。而且他最早意識到了GPU挖礦的效率遠高於CPU，他自己表示他所有的比特幣都是通過一塊 nvidia 9800 GTX+顯卡在Mac OS環境下挖的。
看來Laszlo並沒有因為比特幣而暴富。到這裡，大家可能還會好奇另一位主角Jercos現在怎麼樣了。
https://en.bitcoin.it/wiki/Jercosen.bitcoin.it
根據比特幣維基百科的說法，Jercos在交易時才18歲，算下來現在也才26歲。
Q. What do you primarily use bitcoins for? Do you still control millions of dollars worth?A. Bitcoin as a currency is meant to be spent. Those 10,000 BTC made it back into the economy fairly quickly, around the time they were worth some $400.
Bitcoin Address Lookup Checker and Alertsbitcoinwhoswho.com
Jercos表示他很快就把這些比特幣花了，掙了400刀，回報率達到了10倍。
好魔幻的現實，跌宕起伏的劇情。本來我覺得這倆人應該早就成了超級富豪了，但也意外這兩位心態都這麼好。
閱讀更多 幣圈神機訊 的文章
