The first block of the blockchain of the decentralized <a href="https://en.wikipedia.org/wiki/Payment_system" id="mwAWc" rel="mw:WikiLink" title="Payment system">payment system</a> <a href="https://en.wikipedia.org/wiki/Bitcoin" id="mwAWg" rel="mw:WikiLink" title="Bitcoin">Bitcoin</a>, called the <i id="mwAWk">Genesis block</i>, is established by the creator of the system, <a href="https://en.wikipedia.org/wiki/Satoshi_Nakamoto" id="mwAWo" rel="mw:WikiLink" title="Satoshi Nakamoto">Satoshi Nakamoto</a>.<sup about="#mwt245" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-47"}}' id="cite_ref-47" rel="dc:references" typeof="mw:Extension/ref"><a href="./January_3#cite_note-47" id="mwAWs" style="counter-reset: mw-Ref 47;"><span class="mw-reflink-text" id="mwAWw">[47]</span></a></sup>
<span class="mw-reference-text reference-text" id="mw-reference-text-cite_note-47"><cite about="#mwt242" class="citation book cs1" id="CITEREFLea2016">Lea, Tim (12 December 2016). <a class="external text" href="https://books.google.com/books?id=fwyxDQAAQBAJ&amp;pg=PA10" id="mwCj0" rel="mw:ExtLink nofollow"><i id="mwCj4">Down The Rabbit Hole: (Discover The Power of the Blockchain)</i></a>. Tim Lea. p.<span id="mwCj8" typeof="mw:Entity"> </span>10. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwCkA" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwCkE" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-1-63587-669-7" id="mwCkI" rel="mw:WikiLink" title="Special:BookSources/978-1-63587-669-7"><bdi id="mwCkM">978-1-63587-669-7</bdi></a>.</cite><span about="#mwt242" class="Z3988" id="mwCkQ" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Down+The+Rabbit+Hole%3A+%28Discover+The+Power+of+the+Blockchain%29&amp;rft.pages=10&amp;rft.pub=Tim+Lea&amp;rft.date=2016-12-12&amp;rft.isbn=978-1-63587-669-7&amp;rft.aulast=Lea&amp;rft.aufirst=Tim&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DfwyxDQAAQBAJ%26pg%3DPA10&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AJanuary+3"></span></span>