21 BTCLaszlo Hanyecz
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In plain words
Laszlo Hanyecz: Early developer; first public GPU miner; bought two pizzas for 10,000 BTC. Released an OpenCL GPU miner in May 2010 and maintained early Mac OS builds. On 22 May 2010 he paid 10,000 BTC for two pizzas, now celebrated as Bitcoin Pizza Day.
Background
- GPU programming (OpenCL) and Mac OS builds of Bitcoin (his words)
What is not known
No X account shown: two accounts (@LaszloHanyecz, @laszlo_hanyecz) use his name, but neither is linked from anything he's confirmed and their bios contradict each other.
In their own words
“I have a working prototype of Bitcoin generation with OpenCL.” (10 May 2010, via BitcoinTalk)
“I'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.” (18 May 2010, via BitcoinTalk)
References
- BitcoinTalk · laszlo bitcointalk.org
- bitcointalk.org bitcointalk.org