{"id":14816,"date":"2017-10-03T18:46:32","date_gmt":"2017-10-03T18:46:32","guid":{"rendered":"https:\/\/atifunaldi.wordpress.com\/?p=14816"},"modified":"2017-10-03T18:46:32","modified_gmt":"2017-10-03T18:46:32","slug":"netizen-2-sanal-para-ve-blok-zincir-ekonomisi","status":"publish","type":"post","link":"https:\/\/atif.unaldi.org\/blog\/2017\/10\/03\/netizen-2-sanal-para-ve-blok-zincir-ekonomisi\/","title":{"rendered":"Netizen (2) : Sanal Para ve Blok Zincir Ekonomisi"},"content":{"rendered":"

FinansalForum\u2019da, alt\u0131n kar\u015f\u0131l\u0131\u011f\u0131 bulunmayan bir ekonominin sanal oldu\u011funu s\u00f6yledi\u011fim g\u00fcnden bu yana neredeyse 20 y\u0131l ge\u00e7ti. Art\u0131k bu ili\u015fkinin yeniden kurulmas\u0131n\u0131 beklemek ne kadar romantik bir bak\u0131\u015f a\u00e7\u0131s\u0131ysa, sanal paran\u0131n bir dayana\u011f\u0131n\u0131n olmad\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnmek de ayn\u0131 oranda garip geliyor bana.
\n\u0130sterseniz size k\u0131saca uzmanlar\u0131n verdi\u011fi, sanal para madencili\u011fi ile ilgili rakamlar\u0131 ileterek ba\u015flayay\u0131m. GPU \u00fczerinden yap\u0131lan madencilikten son \u00fc\u00e7 ayda T\u00fcrkiye\u2019ye giren para 10 milyon dolar civarlar\u0131nda. ASIC madencili\u011finde ise bu rakam 2 milyon dolar\u0131 buluyor.
\nAncak g\u00fcn ge\u00e7tik\u00e7e sanal para madencili\u011fi i\u00e7in\u00a0 olu\u015fturman\u0131z gereken donan\u0131m ve elektrik maliyeti o kadar y\u00fckseliyor ki; bunu zararl\u0131 yaz\u0131l\u0131mlar arac\u0131l\u0131\u011f\u0131 ile olu\u015fturulan botnet\u2019lerle yapan dijital \u00e7eteler olu\u015fmu\u015f. Kaspersky Laz\u2019\u0131n bu konudaki ara\u015ft\u0131rmas\u0131 4000 cihazdan olu\u015fan kanunsuz bir botnet\u2019in ayda 30bin dolar civar\u0131nda bir sanal para madencili\u011fi yapabilece\u011fi yolunda.
\nKaspersky Lab uzmanlar\u0131 bu konda yapt\u0131klar\u0131 ara\u015ft\u0131rmada 5000 bilgisayardan olu\u015fan bir botnet\u2019in 200bin dolardan fazla gelir elde edildi\u011fine \u015fahit olduklar\u0131n\u0131 iletiyorlar.
\nTabii bitcoin ekosistemi bununla da kalm\u0131yor. 2015 y\u0131l\u0131nda d\u00fcnya genelinde 415 bitcoin ATM\u2019si varken Eyl\u00fcl 2017 itibariyle bu say\u0131n\u0131n 3 kat\u0131, 1516\u2019ya \u00e7\u0131kt\u0131\u011f\u0131n\u0131 biliyoruz. Tabii bu ATM\u2019lerin yar\u0131dan fazlas\u0131n\u0131n Amerika\u2019da oldu\u011funu san\u0131yorum s\u00f6ylememize gerek yoktur.
\nD\u00fcnya \u00fczerindeki en pahal\u0131 sanal para olan bitcoinin fiyat\u0131 konusunda elimdeki coinmarketcap ara\u015ft\u0131rmas\u0131 bu ay i\u00e7in 3969 dolar fiyat verirken, Google\u2019\u0131n Midmarketrates\u2019den ald\u0131\u011f\u0131 rakam 4073 dolar. Yani bitcoin y\u00fckselmeye devam ediyor. \u00dcstelik Twitter\u2019da yapt\u0131\u011f\u0131m anket de g\u00f6steriyor ki; bitcoinin y\u00fckselece\u011fi d\u00fc\u015f\u00fcncesinde olanlar\u0131n oran\u0131 y\u00fczde 82.
\nBitcoin en y\u00fcksek fiyata sahip olan sanal para olmakla birlikte 26 eyl\u00fcl itibariyle rezervlerine, Etherum ve\u00a0 Litecoin da yeti\u015fmek \u00fczeredir.
\nBuraya nereden geldik
\nAsl\u0131nda sanal para ve onun \u00fczerine oturdu\u011fu blok zincir (blockchain) teknolojisinin ortaya \u00e7\u0131k\u0131\u015f\u0131 \u00e7ok da eskilere dayanm\u0131yor. Blok zinciri fikri ilk olarak Satoshi Nakamoto’nun 2008’de kriptopara fikri olan Bitcoin’i ortaya koydu\u011fu makalede \u00e7\u0131km\u0131\u015ft\u0131r. Kriptopara makalesiyle beraber gelen da\u011f\u0131t\u0131k veritaban\u0131 fikri sanal para \u00fczerindeki birden fazla harcanma problemine bir \u00e7\u00f6z\u00fcm olarak \u00f6nerilmi\u015ftir.
\nBu koca ekonominin miram\u0131 Satoshi Nakamoto\u2019nun kim oldu\u011fu bilinmemekle birlikte 1975 y\u0131l\u0131 5 Nisan do\u011fumlu Amerika\u2019da ya\u015fayan bir Japon bilgisayar m\u00fchendisi oldu\u011fu tahmin edilmektedir. Eyl\u00fcl 2017 itibari ile Nakamoto\u2019nun elinde bulundu\u011fu varsay\u0131lan 1milyon bitcoin\u2019in de\u011ferinin 4 milyar dolarl\u0131k bir servete tekab\u00fcl etti\u011fi s\u00f6yleniyor.
\nBitcoin asl\u0131nda bir blok zincir teknolojisi. K\u0131saca da\u011f\u0131t\u0131k yap\u0131l\u0131 veri taban\u0131 olan blok zincir teknolojisi, sadece finans de\u011fil bir\u00e7ok alanda kullan\u0131labiliyor. G\u00fcvenlik, kimlik denetimi kullan\u0131lan en \u00f6nemli alanlardan biri.
\nBlockchain asl\u0131nda dijital d\u00f6n\u00fc\u015f\u00fcm\u00fcn de en etkili alanlar\u0131ndan biri. Blok zincir teknolojileri sayesinde operasyonel maliyetler y\u00fczde 73 oran\u0131nda d\u00fc\u015f\u00fcyor. Tabii bu sekt\u00f6rel bazda de\u011fi\u015fiyor. G\u00fcvenlik ve ana sermaye maliyetlerini de d\u00fc\u015f\u00fcrmesi, bir\u00e7ok sekt\u00f6r taraf\u0131ndan dijital d\u00f6n\u00fc\u015f\u00fcm\u00fcn en \u00f6nemli par\u00e7as\u0131 olarak kullan\u0131laca\u011f\u0131n\u0131 g\u00f6steriyor.
\nBlok zincirler finans ve kimlik kontrol\u00fc sekt\u00f6rlerinde \u00e7o\u011funlukla kullan\u0131l\u0131rken, ileti\u015fim alan\u0131nda da ciddi bir \u015fifreleme y\u00f6ntemi. Mahremiyetin \u00f6nemli oldu\u011fu alanlarda da \u00e7ok\u00e7a kullan\u0131lan blok zincirler, yap\u0131s\u0131 itibariyle da\u011f\u0131t\u0131lm\u0131\u015f (decentralised) yap\u0131lar\u0131n y\u00f6netiminde de ciddi avantajlar sa\u011fl\u0131yor.
\nDa\u011f\u0131t\u0131lm\u0131\u015f yap\u0131lar
\nBitcoin ve devam\u0131nda blok zincirler yap\u0131s\u0131 gere\u011fi da\u011f\u0131t\u0131k yap\u0131dalard\u0131r. Da\u011f\u0131\u0131tk olmayan, merkezi yap\u0131lar \u00e7a\u011f\u0131m\u0131z\u0131n en ciddi g\u00fcvenlik problemlerinin sebebi oldu\u011fu i\u00e7in, asl\u0131nda internetin yayg\u0131nla\u015fmas\u0131 ile da\u011f\u0131t\u0131lm\u0131\u015f yap\u0131lar \u00e7ok\u00e7a kulland\u0131\u011f\u0131m\u0131z \u00e7\u00f6z\u00fcmler aras\u0131na girmi\u015ftir. Merkezi yap\u0131lar\u0131n neden g\u00fcvenlikli olmad\u0131\u011f\u0131n\u0131 burada anlatmak \u00e7ok m\u00fcmk\u00fcn olmasa da son d\u00f6nemde Equifax olay\u0131 en belirgin \u00f6rnek durumlardan biridir. Amerika\u2019da kredi derecelendirme kurulu\u015fu olan Equifax toplamda 143 milyon vatanda\u015f\u0131n\u0131n kimlik ve kredi bilgilerini \u00e7ald\u0131rm\u0131\u015ft\u0131r. Bu tip b\u00fcy\u00fck miktardaki hesap bilgisi, ki\u015fisel bilgi \u00e7al\u0131nmas\u0131 durumu, \u015fifresini zorla\u015ft\u0131rmak i\u00e7in k\u0131l\u0131 k\u0131rk yaran ve sonra o zorla\u015ft\u0131rd\u0131\u011f\u0131 \u015fifreyi hat\u0131rlamakta \u00e7ok zorlanan biz kullan\u0131c\u0131lar\u0131n bu enerjilerini bo\u015fa \u00e7\u0131karmaktad\u0131r. Ancak buna ra\u011fmen \u015fu ana kadar bu b\u00fcy\u00fck a\u00e7\u0131klar\u0131 verip, skandallara sebep olan kurumlara nedense hi\u00e7bir tazminat davas\u0131 a\u00e7\u0131lmam\u0131\u015ft\u0131r.
\nHizmet paras\u0131z veriliyor bile olsa, \u015fifrelerimizin bile \u00fc\u00e7\u00fcnc\u00fc \u015fah\u0131slar taraf\u0131ndan biliniyor olmas\u0131, derin \u00f6\u011frenme y\u00f6ntemi ile ciddi b\u00fcy\u00fck tehditlere d\u00f6n\u00fc\u015febilir. Bu bence tazminat davas\u0131ndan da daha ciddi bir kamu davas\u0131 olmal\u0131d\u0131r.
\n[youtube https:\/\/www.youtube.com\/watch?v=yecx-I6qYWQ&w=480&h=270]<\/p>\n","protected":false},"excerpt":{"rendered":"

FinansalForum\u2019da, alt\u0131n kar\u015f\u0131l\u0131\u011f\u0131 bulunmayan bir ekonominin sanal oldu\u011funu s\u00f6yledi\u011fim g\u00fcnden bu yana neredeyse 20 y\u0131l ge\u00e7ti. Art\u0131k bu ili\u015fkinin yeniden kurulmas\u0131n\u0131 beklemek ne kadar romantik bir bak\u0131\u015f a\u00e7\u0131s\u0131ysa, sanal paran\u0131n bir dayana\u011f\u0131n\u0131n olmad\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnmek de…<\/p>\n","protected":false},"author":2,"featured_media":14818,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[167,704,1499],"class_list":["post-14816","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogum","tag-atifunaldi","tag-ifttt","tag-youtube"],"yoast_head":"\nNetizen (2) : Sanal Para ve Blok Zincir Ekonomisi - At\u0131f \u00dcnald\u0131 | Yaz\u0131lar ve Yay\u0131n Ar\u015fivi<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atif.unaldi.org\/blog\/2017\/10\/03\/netizen-2-sanal-para-ve-blok-zincir-ekonomisi\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Netizen (2) : Sanal Para ve Blok Zincir Ekonomisi - At\u0131f \u00dcnald\u0131 | Yaz\u0131lar ve Yay\u0131n Ar\u015fivi\" \/>\n<meta property=\"og:description\" content=\"FinansalForum\u2019da, alt\u0131n kar\u015f\u0131l\u0131\u011f\u0131 bulunmayan bir ekonominin sanal oldu\u011funu s\u00f6yledi\u011fim g\u00fcnden bu yana neredeyse 20 y\u0131l ge\u00e7ti. 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