Bitcoin & cryptocurrencies

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@paulgreg - Grégory Paul
@mappy

#bitcoin

http://commitstrip.com/

Bitcoin ?

Wikipedia

https://blockchain.info/charts/n-transactions?timespan=all

            sha1("Hello World")
            0a4d55a8d778e5022fab701977c5d840bbc486d0

            sha1("Hello World.")
            b701146cf2c1262a6385c8b1fb1db98f05820499

            sha1("Very long text..................")
            02d837618c9cae8509a7410866f6caf2457be9d5

            SHA1("1:20:date:email::") < 00001
            echo -n "1:20:060408:[email protected]::1QTjaYd7niiQA/sc:ePa" | sha1sum
            00000a4a8bd07bddbdb0c4ea9ddb2d29b8d1cc5e

00000a4a8bd... < 0000100000...

+/-

X

1 2 3 4

Bitcoin

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**GPU : 640 Mh/s - 3 Mh/J**(AMD Radeon 7970)

**FPGA : 800 Mh/s - 20 Mh/J**(ModMiner Quad)

**ASIC : 14 Th/s - 10 Gh/J**(AntMiner S9)

Litecoin

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                  /.bitcoin/wallet.dat

Division

1		= 1 bitcoin
0.01	= 1 c	= 1 centibitcoin ( bitcent)
0.001	= 1 m	= 1 millibitcoin ( mbit, millibit, bitmill)
0.000 001	= 1 μ	= 1 microbitcoin ( ubit, microbit)
0.000 000 01		= 1 Satoshi

La Maison du Bitcoin - 35 rue du Caire, 75002 Paris

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