{"id":499219,"date":"2020-11-10T17:51:44","date_gmt":"2020-11-10T15:51:44","guid":{"rendered":"https:\/\/www.etoro.com\/crypto\/blockchain-guide\/"},"modified":"2025-11-03T14:24:03","modified_gmt":"2025-11-03T12:24:03","slug":"blockchain-guide","status":"publish","type":"page","link":"https:\/\/www.etoro.com\/cs-cz\/crypto\/blockchain-guide\/","title":{"rendered":"Co je to blockchain a jak funguje?"},"content":{"rendered":"\n<p class=\"is-style-summary\">Blockchain je digit\u00e1ln\u00ed datab\u00e1ze, kter\u00e1 uchov\u00e1v\u00e1 informace v bloc\u00edch, kter\u00e9 jsou na sebe nav\u00e1z\u00e1ny v \u010dasov\u00e9 posloupnosti. Data jsou sd\u00edlena nap\u0159\u00ed\u010d s\u00edt\u00ed \u00fa\u010dastn\u00edk\u016f, co\u017e zt\u011b\u017euje jejich dodate\u010dn\u00e9 \u00fapravy. D\u00edky tomu je blockchain vhodn\u00fd pro bezpe\u010dn\u00e9 zaznamen\u00e1v\u00e1n\u00ed transakc\u00ed bez centr\u00e1ln\u00edho spr\u00e1vce.<\/p>\n\n\n\n\n\n\n<hr class=\"wp-block-separator wp-block-separator-color-dark-grey wp-block-separator-spaces-medium wp-block-separator-weight-1\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Co je to Blockchain technologie?<\/h2>\n\n\n\n<p><mark><strong>Blockchain je digit\u00e1ln\u00ed \u00fa\u010detn\u00ed kniha, kter\u00e1 zaznamen\u00e1v\u00e1 transakce<\/strong> a ukl\u00e1d\u00e1 je na v\u00edce m\u00edstech v s\u00edti. D\u00edky tomu je odoln\u00e1 v\u016f\u010di manipulaci a \u0161kodliv\u00fdm \u00fatok\u016fm \u2013 z\u00e1znamy nen\u00ed mo\u017en\u00e9 m\u011bnit. Ka\u017ed\u00fd nov\u00fd z\u00e1znam se p\u0159id\u00e1v\u00e1 do \u0159et\u011bzce blok\u016f, \u010d\u00edm\u017e vznik\u00e1 chronologick\u00fd a transparentn\u00ed syst\u00e9m.<\/mark><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jak blockchain funguje?<\/h2>\n\n\n\n<p><strong>Data jsou ulo\u017eena v \u00fa\u010detn\u00ed knize v tzv. \u201ebloc\u00edch\u201c, kter\u00e9 funguj\u00ed jako \u00falo\u017ei\u0161t\u011b informac\u00ed<\/strong>. Bloky maj\u00ed ur\u010ditou \u00falo\u017enou kapacitu \u2013 jakmile m\u00e1 blok plnou kapacitu, propoj\u00ed se s p\u0159edchoz\u00edm blokem a vygeneruje se \u010dasov\u00e9 raz\u00edtko. T\u00edm, jak se vytv\u00e1\u0159ej\u00ed dal\u0161\u00ed bloky, vznik\u00e1 \u0159et\u011bzec dat \u2013 onen \u201eblockchain\u201c.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"756\" height=\"400\" src=\"https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-1-2-1.png\" alt=\"\" class=\"wp-image-660870 wp-image-desktop\" srcset=\"https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-1-2-1.png 756w, https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-1-2-1-300x159.png 300w\" sizes=\"(max-width: 756px) 100vw, 756px\" \/><\/figure>\n\n\n\n<p><strong>Bloky p\u0159edstavuj\u00ed<\/strong> <strong>skupiny dat, kter\u00e9 tvo\u0159\u00ed jednotliv\u00e9 \u010dl\u00e1nky blockchainu<\/strong>. Ka\u017ed\u00fd blok obsahuje dv\u011b kl\u00ed\u010dov\u00e9 hodnoty \u2013 \u201enonce\u201c a \u201ehash\u201c. \u201eNonce\u201c je <strong><e-tip data-tooltip=\"Bin\u00e1rn\u00ed \u010d\u00edslice je nejmen\u0161\u00ed jednotka dat, kterou m\u016f\u017ee po\u010d\u00edta\u010d zpracovat a ulo\u017eit.\">32bitov\u00e9<\/e-tip> <\/strong>cel\u00e9 \u010d\u00edslo, kter\u00e9 se vygeneruje p\u0159i vytvo\u0159en\u00ed bloku.<\/p>\n\n\n\n<p><strong>\u201eHash\u201c je 256bitov\u00e1 hodnota slou\u017e\u00edc\u00ed jako jedine\u010dn\u00fd identifik\u00e1tor bloku \u2013 podobn\u011b jako digit\u00e1ln\u00ed otisk prst<\/strong>u. Jakmile je blok dokon\u010den, jeho nonce vytvo\u0159\u00ed hash, \u010d\u00edm\u017e je blok \u201epodeps\u00e1n\u201c a pevn\u011b propojen s t\u011bmito hodnotami. D\u00edky tomu jsou data v bloku <strong><e-tip data-tooltip=\"\u0160ifrovac\u00ed technika, kter\u00e1 umo\u017e\u0148uje pouze odes\u00edlateli a zam\u00fd\u0161len\u00e9mu p\u0159\u00edjemci zpr\u00e1vy zobrazit jej\u00ed obsah.\">kryptograficky<\/e-tip><\/strong> zabezpe\u010dena.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote wp-block-quote-scheme-green is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201eStejn\u011b jako internet z\u00e1sadn\u011b zm\u011bnil zp\u016fsob, jak\u00fdm sd\u00edl\u00edme informace, m\u00e1 blockchain potenci\u00e1l zcela prom\u011bnit zp\u016fsob, jak\u00fdm si vym\u011b\u0148ujeme hodnotu, p\u0159ev\u00e1d\u00edme sv\u00e9 vlastnictv\u00ed a ov\u011b\u0159ujeme transakce.\u201c<\/p>\n<cite>JPMorgan<\/cite><\/blockquote>\n\n\n\n<p><strong>Uzly jsou pak<\/strong> <strong>za\u0159\u00edzen\u00ed \u2013 po\u010d\u00edta\u010de nebo servery v s\u00edti \u2013 kter\u00e1 se mohou \u00fa\u010dastnit provozu blockchainu<\/strong>. Uzly ov\u011b\u0159uj\u00ed, zda jsou data v blockchainu platn\u00e1, a to na z\u00e1klad\u011b p\u0159edem stanoven\u00fdch pravidel s\u00edt\u011b. Ka\u017ed\u00e1 akce mus\u00ed b\u00fdt schv\u00e1lena v\u011bt\u0161inou ostatn\u00edch uzl\u016f.<\/p>\n\n\n\n<p>Pokud nap\u0159\u00edklad n\u011bkter\u00fd uzel vytvo\u0159\u00ed nov\u00fd blok, tento blok je rozesl\u00e1n v\u0161em ostatn\u00edm uzl\u016fm, kter\u00e9 ho mus\u00ed ov\u011b\u0159it a potvrdit, \u017ee nedo\u0161lo k jeho pozm\u011bn\u011bn\u00ed. Tento proces dohody se naz\u00fdv\u00e1 <strong><e-tip data-tooltip=\"Mechanismus pou\u017e\u00edvan\u00fd k dosa\u017een\u00ed bezpe\u010dnosti a dohody v decentralizovan\u00e9 s\u00edti.\">konsenzus<\/e-tip><\/strong> a pr\u00e1v\u011b <strong>d\u00edky n\u011bmu je blockchain tak bezpe\u010dn\u00fd<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-etoro-tip wp-block-etoro-tip-border-yellow\"><span class=\"wp-block-etoro-tip-icon\"><\/span><div class=\"wp-block-etoro-tip-text\">\n<p><strong>Tip: <\/strong>Blockchain nen\u00ed ani kryptom\u011bna, ani programovac\u00ed jazyk \u2013 je to technologie. Blockchain hraje v r\u00e1mci kryptom\u011bn z\u00e1sadn\u00ed roli, ale jedn\u00e1 se o dv\u011b odli\u0161n\u00e9 v\u011bci.<\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Jak blockchainy dosahuj\u00ed konsenzu?<\/h2>\n\n\n\n<p>Existuj\u00ed r\u016fzn\u00e9 zp\u016fsoby, jak mohou blockchainy dos\u00e1hnout konsenzu. <strong>Dva z\u00e1kladn\u00ed mechanismy konsenzu <\/strong>v\u0161ak jsou <strong>\u2013 <\/strong>Proof of Work (PoW) a Proof of Stake (PoS).<\/p>\n\n\n\n<p><mark><strong>Proof of Work (PoW) je prvn\u00ed zp\u016fsob ov\u011b\u0159ov\u00e1n\u00ed blok\u016f v\u202fblockchainu<\/strong>. Valid\u00e1to\u0159i (t\u011b\u017ea\u0159i) pomoc\u00ed v\u00fdpo\u010detn\u00edho v\u00fdkonu hledaj\u00ed spr\u00e1vn\u00fd \u201ehash\u201c bloku. Kdo ho najde prvn\u00ed, ov\u011b\u0159\u00ed transakce a z\u00edsk\u00e1 odm\u011bnu v podob\u011b <a href=\"https:\/\/www.etoro.com\/cs-cz\/crypto\/\">kryptom\u011bny<\/a>. Tento syst\u00e9m vyu\u017e\u00edv\u00e1 nap\u0159. Bitcoin<\/mark><\/p>\n\n\n\n<p><strong>Proof of Stake (PoS) je zp\u016fsob ov\u011b\u0159ov\u00e1n\u00ed blok\u016f, kde u\u017eivatel\u00e9 \u201estakuj\u00ed\u201c svou kryptom\u011bnu jako<\/strong> <strong><e-tip data-tooltip=\"Aktivum, kter\u00e9 m\u00e1 hodnotu a je zastaveno jako zaji\u0161t\u011bn\u00ed p\u016fj\u010dky v p\u0159\u00edpad\u011b, \u017ee p\u016fj\u010dka nen\u00ed splacena.\">z\u00e1stavu<\/e-tip><\/strong>. Ti, kdo ji uzamknou, maj\u00ed \u0161anci n\u00e1hodn\u011b ov\u011b\u0159it nov\u00fd blok a z\u00edskat odm\u011bnu. Pou\u017e\u00edv\u00e1 ho nap\u0159\u00edklad blockchain Ethereum 2.0 jako alternativu k Proof of Work.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"756\" height=\"400\" src=\"https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-2-2-1.png\" alt=\"\" class=\"wp-image-660891 wp-image-desktop\" srcset=\"https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-2-2-1.png 756w, https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-2-2-1-300x159.png 300w\" sizes=\"(max-width: 756px) 100vw, 756px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Blockchain a kryptom\u011bny<\/h2>\n\n\n\n<p>Blockchain je z\u00e1kladn\u00ed technologie kryptom\u011bn. I p\u0159esto, \u017ee<strong> technologii blockchainu lze pou\u017e\u00edt k ukl\u00e1d\u00e1n\u00ed cel\u00e9 \u0159ady dat, je nejv\u00edce zn\u00e1m\u00fd pro ukl\u00e1d\u00e1n\u00ed a ov\u011b\u0159ov\u00e1n\u00ed kryptom\u011bnov\u00fdch transakc\u00ed<\/strong>. Nap\u0159\u00edklad bitcoinov\u00fd blockchain obsahuje z\u00e1znam ka\u017ed\u00e9 bitcoinov\u00e9 transakce, kter\u00e1 kdy byla provedena.&nbsp;<\/p>\n\n\n\n<p>Kryptom\u011bny jsou navr\u017eeny tak, aby byly <strong>bezpe\u010dn\u00e9, <e-tip data-tooltip=\"P\u0159evod kontroly a rozhodov\u00e1n\u00ed na s\u00ed\u0165 \u00fa\u010dastn\u00edk\u016f, sp\u00ed\u0161e ne\u017e na jeden hlavn\u00ed, centr\u00e1ln\u00ed, org\u00e1n \u2013 nap\u0159. centr\u00e1ln\u00ed banky nebo vl\u00e1dy.\">decentralizovan\u00e9<\/e-tip><\/strong> <strong>a <e-tip data-tooltip=\"Kdy\u017e jsou transakce s kryptom\u011bnami ve\u0159ejn\u011b p\u0159\u00edstupn\u00e9 a mohou si je prohl\u00ed\u017eet ostatn\u00ed \u00fa\u010dastn\u00edci s\u00edt\u011b.\">transparentn\u00ed<\/e-tip><\/strong>. Technologie blockchainu spl\u0148uje a umo\u017e\u0148uje v\u0161echny t\u0159i tyto v\u011bci.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><div class=\"wp-block-table-content\"><div class=\"wp-block-table-content-nav wp-block-table-content-nav-left\"><div class=\"wp-block-table-content-nav-arrow wp-block-table-content-nav-arrow-left\"><\/div><\/div><div class=\"wp-block-table-content-nav wp-block-table-content-nav-right\"><div class=\"wp-block-table-content-nav-arrow wp-block-table-content-nav-arrow-right\"><\/div><\/div><div class=\"wp-block-table-content-table\"><table><thead><tr><th><strong>Bezpe\u010dnost<\/strong><\/th><th><strong>Decentralizace<\/strong><\/th><th><strong>Transparentnost<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Blockchain je zalo\u017een na konsenzu a kryptografii, tak\u017ee<strong> je t\u00e9m\u011b\u0159 nemo\u017en\u00e9 manipulovat s informacemi o kryptom\u011bnov\u00fdch transakc\u00edch<\/strong>.<\/td><td>Blockchainy funguj\u00ed na principu <strong><e-tip data-tooltip=\"Kdy\u017e nen\u00ed t\u0159eba spol\u00e9hat se na t\u0159et\u00ed stranu ani j\u00ed d\u016fv\u011b\u0159ovat. Obvykle se tento pojem pou\u017e\u00edv\u00e1 v r\u00e1mci kryptom\u011bn a decentralizovan\u00fdch blockchain\u016f.\">\u201ed\u016fv\u011bry bez d\u016fv\u011bry\u201c<\/e-tip><\/strong>, co\u017e znamen\u00e1, \u017ee <strong>v\u0161echny transakce s kryptom\u011bnami mus\u00ed b\u00fdt ov\u011b\u0159eny v\u011bt\u0161inou \u00fa\u010dastn\u00edk\u016f s\u00edt\u011b<\/strong>.&nbsp;<br><br>V\u011bt\u0161ina kryptom\u011bn proto nen\u00ed \u0159\u00edzena \u017e\u00e1dnou centr\u00e1ln\u00ed autoritou, jako je tomu u tradi\u010dn\u00edch <strong><e-tip data-tooltip=\"M\u011bna vydan\u00e1 vl\u00e1dou, kter\u00e1 nen\u00ed kryta \u017e\u00e1dnou komoditou, jako je zlato nebo st\u0159\u00edbro, nap\u0159. americk\u00e9 dolary.\">fiat m\u011bn<\/e-tip><\/strong>.<\/td><td>Je<strong> mo\u017en\u00e9 zobrazit a sledovat v\u0161echny historick\u00e9 kryptom\u011bnov\u00e9 transakce v blockchainu<\/strong>, tak\u017ee jsou pln\u011b p\u0159\u00edstupn\u00e9 a auditovateln\u00e9.<\/td><\/tr><\/tbody><\/table><\/div><\/div><\/figure>\n\n\n\n<div class=\"wp-block-etoro-tip wp-block-etoro-tip-border-yellow\"><span class=\"wp-block-etoro-tip-icon\"><\/span><div class=\"wp-block-etoro-tip-text\">\n<p><strong>Tip:<\/strong> P\u0159esto\u017ee jsou v\u0161echny historick\u00e9 transakce v blockchainu ve\u0159ejn\u011b p\u0159\u00edstupn\u00e9, jsou tyto transakce anonymn\u00ed. D\u00edky tomu nen\u00ed mo\u017en\u00e9 vysledovat konkr\u00e9tn\u00ed transakce zp\u011bt k odes\u00edlateli nebo p\u0159\u00edjemci.<\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Je blockchain bezpe\u010dn\u00fd?<\/h2>\n\n\n\n<p>\u017d\u00e1dn\u00e1 technologie nen\u00ed nikdy zcela bezpe\u010dn\u00e1. <strong>Technologie blockchainu m\u00e1 v\u0161ak potenci\u00e1l b\u00fdt bezpe\u010dn\u011bj\u0161\u00ed ne\u017e tradi\u010dn\u00ed s\u00edt\u011b<\/strong>. Ka\u017ed\u00fd blok m\u00e1 jedine\u010dnou adresu, nav\u00edc je propojen s p\u0159edchoz\u00edm blokem v \u0159et\u011bzci, tak\u017ee je snadno dohledateln\u00fd a je obt\u00ed\u017en\u00e9 s n\u00edm manipulovat.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"756\" height=\"400\" src=\"https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-3-2-1.png\" alt=\"\" class=\"wp-image-660912 wp-image-desktop\" srcset=\"https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-3-2-1.png 756w, https:\/\/www.etoro.com\/wp-content\/uploads\/2023\/07\/Body-Image-3-2-1-300x159.png 300w\" sizes=\"(max-width: 756px) 100vw, 756px\" \/><\/figure>\n\n\n\n<p>Existuje n\u011bkolik dal\u0161\u00edch kl\u00ed\u010dov\u00fdch aspekt\u016f, d\u00edky kter\u00fdm je blockchain tak bezpe\u010dn\u00fd:<\/p>\n\n\n\n<ul class=\"wp-block-list wp-block-list wp-block-list-circle\">\n<li><strong>Nem\u011bnn\u00fd (nezam\u011bniteln\u00fd):<\/strong> Jakmile jsou datov\u00e9 bloky p\u0159id\u00e1ny do datab\u00e1ze, u\u017e je nen\u00ed mo\u017en\u00e9 zm\u011bnit. To znamen\u00e1, \u017ee <strong>nepoctiv\u00ed u\u017eivatel\u00e9 nebo hacke\u0159i nemohou m\u011bnit data<\/strong> za \u00fa\u010delem vlastn\u00edho finan\u010dn\u00edho prosp\u011bchu.<\/li>\n\n\n\n<li><strong>Konsenzus:<\/strong> Vzhledem k tomu, \u017ee jsou transakce ov\u011b\u0159ov\u00e1ny na z\u00e1klad\u011b konsensu\u00e1ln\u00edho mechanismu blockchainu, <strong>lze snadno zabr\u00e1nit podvodn\u00fdm transakc\u00edm<\/strong>.<\/li>\n\n\n\n<li><strong>\u0160ifrov\u00e1n\u00ed:<\/strong> Blockchain je zabezpe\u010den pomoc\u00ed \u0161ifrov\u00e1n\u00ed ve\u0159ejn\u00fdm kl\u00ed\u010dem na finan\u010dn\u00ed \u00farovni, tak\u017ee <strong>p\u0159\u00edstup k n\u011bmu je neuv\u011b\u0159iteln\u011b obt\u00ed\u017en\u00fd<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Shrnut\u00ed<\/h2>\n\n\n\n<p><strong>Pochopen\u00ed blockchainu je d\u016fle\u017eitou sou\u010d\u00e1st\u00ed studia kryptom\u011bn<\/strong> a dal\u0161\u00edch <a href=\"https:\/\/www.etoro.com\/cs-cz\/discover\/markets\/cryptocurrencies\/coins\">kryptoaktiv<\/a>. A\u010dkoliv se to m\u016f\u017ee zd\u00e1t slo\u017eit\u00e9, je nezpochybniteln\u00e9, jak\u00fd p\u0159\u00ednos technologie blockchainu m\u00e1 a bude m\u00edt i nad\u00e1le v budoucnu.&nbsp;<\/p>\n\n\n\n<p>A\u0165 u\u017e v\u00e1s zaj\u00edm\u00e1 ochrana va\u0161ich dat, odebr\u00e1n\u00ed kontroly tradi\u010dn\u00edm bankovn\u00edm instituc\u00edm nebo zv\u00fd\u0161en\u00ed finan\u010dn\u00ed transparentnosti, <strong>blockchain m\u00e1 potenci\u00e1l u\u010dinit revoluci v tom, jak\u00fdm zp\u016fsobem budeme v budoucnu ukl\u00e1dat, zaznamen\u00e1vat a vyu\u017e\u00edvat data<\/strong>.<\/p>\n\n\n\n<p>Nav\u0161tivte <a href=\"https:\/\/www.etoro.com\/cs-cz\/academy\/crypto\/\">Akademii eToro<\/a> a nau\u010dte se v\u00edce o technologii blockchain a kryptom\u011bn\u00e1ch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Test<\/h2>\n\n\n\n<div class=\"wp-block-etoro-quizzes\">\n<div class=\"wp-block-etoro-quiz\" data-answer=\"1\"><div class=\"wp-block-etoro-quiz-body\"><div class=\"wp-block-etoro-quiz-question\">Co je to uzel (node)?<\/div>\n<div class=\"wp-block-etoro-quiz-item\">Blok dat ulo\u017een\u00fd v blockchainu<\/div>\n\n\n\n<div class=\"wp-block-etoro-quiz-item\">Za\u0159\u00edzen\u00ed, kter\u00e9 je sou\u010d\u00e1st\u00ed blockchainov\u00e9 s\u00edt\u011b a ov\u011b\u0159uje transakce<\/div>\n\n\n\n<div class=\"wp-block-etoro-quiz-item\">Konsenzu\u00e1ln\u00ed mechanismus podobn\u00fd mechanismu Proof of Work (PoW)<\/div>\n<\/div><div class=\"wp-block-etoro-quiz-result\">\u00a0<\/div><\/div>\n<\/div>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">\u010cast\u00e9 dotazy<\/h2>\n\n\n\n<dl class=\"wp-block-etoro-faq\">\n<div class=\"wp-block-etoro-faq-item\"><dt class=\"wp-block-etoro-faq-item-question\">Jak se blockchain pou\u017e\u00edv\u00e1?<\/dt><dd class=\"wp-block-etoro-faq-item-answer\">\n<p>Blockchain umo\u017e\u0148uje bezpe\u010dn\u011b sd\u00edlet data bez rizika manipulace. Nej\u010dast\u011bji se vyu\u017e\u00edv\u00e1 v r\u00e1mci plateb pomoc\u00ed <a href=\"https:\/\/www.etoro.com\/cs-cz\/discover\/popular-crypto\">kryptom\u011bn<\/a>, ale pom\u00e1h\u00e1 urychlit tak\u00e9 bankovn\u00ed transakce, uchovat zdravotn\u00ed z\u00e1znamy, sledovat p\u016fvod potravin\u00e1\u0159sk\u00fdch v\u00fdrobk\u016f \u010di zajistit bezpe\u010dn\u00e9 elektronick\u00e9 hlasov\u00e1n\u00ed.<\/p>\n<\/dd><\/div>\n\n\n\n<div class=\"wp-block-etoro-faq-item\"><dt class=\"wp-block-etoro-faq-item-question\">Kdo vynalezl blockchain?<\/dt><dd class=\"wp-block-etoro-faq-item-answer\">\n<p>Technologie blockchain poprv\u00e9 p\u0159edstavili v roce 1990 Stuart Haber a Scott Stornetta, kte\u0159\u00ed hledali zp\u016fsob, jak bezpe\u010dn\u011b ov\u011b\u0159ovat digit\u00e1ln\u00ed dokumenty pomoc\u00ed \u010dasov\u00fdch raz\u00edtek. V roce 2009 pak Satoshi Nakamoto roz\u0161\u00ed\u0159il tento koncept ve sv\u00e9 \u201eb\u00edl\u00e9 knize\u201c o <a href=\"https:\/\/www.etoro.com\/cs-cz\/crypto\/how-to-buy-bitcoin\/\">bitcoinu<\/a>.<\/p>\n<\/dd><\/div>\n\n\n\n<div class=\"wp-block-etoro-faq-item\"><dt class=\"wp-block-etoro-faq-item-question\">Co je decentralizovan\u00e9 financov\u00e1n\u00ed?<\/dt><dd class=\"wp-block-etoro-faq-item-answer\">\n<p>Decentralizovan\u00e9 finance, \u010dasto ozna\u010dovan\u00e9 jako DeFi, popisuj\u00ed odklon od tradi\u010dn\u00edch finan\u010dn\u00edch syst\u00e9m\u016f. DeFi je umo\u017en\u011bno decentralizovan\u00fdmi technologiemi, jako je <a href=\"https:\/\/www.etoro.com\/cs-cz\/crypto\/blockchain-guide\/\">blockchain<\/a>. A jeho c\u00edlem je vytvo\u0159it v\u0161eobecn\u011b dostupnou ekonomiku, kterou vlastn\u00ed a provozuje pouze ve\u0159ejnost, bez z\u00e1sahu finan\u010dn\u00edch instituc\u00ed.<\/p>\n<\/dd><\/div>\n<\/dl>\n\n\n\n\t\t<style>\n\t\t\t.rtl .etoro-block-shortcode-disclaimer {\n\t\t\t\ttext-align:right;\n\t\t\t}\n\t\t\t.etoro-block-shortcode-disclaimer {\n\t\t\t\tmargin-bottom:18px;\n\t\t\t\ttext-align:left;\n\t\t\t}\n\t\t\t.etoro-block-shortcode-disclaimer p{\n\t\t\t\tfont-size: 12px;\n\t\t\t\tline-height: 18px;\n\t\t\t}\n\t\t\t@media (min-width: 768px) {\n\t\t\t\t.etoro-block-shortcode-disclaimer {\n\t\t\t\t\tmax-width:1176px;\n\t\t\t\t\ttext-align:center;\n\t\t\t\t}\n\t\t\t\t.etoro-block-shortcode-disclaimer p {\n\t\t\t\t\tfont-size: 14px;\n\t\t\t\t\tline-height: 20px;\n\t\t\t\t}\n\t\t\t}\n\t\t<\/style>\n\t\t<div class='etoro-block-shortcode-disclaimer'><p>Tyto informace slou\u017e\u00ed pouze pro vzd\u011bl\u00e1vac\u00ed \u00fa\u010dely a nelze je pova\u017eovat za investi\u010dn\u00ed poradenstv\u00ed, osobn\u00ed doporu\u010den\u00ed, nab\u00eddku nebo v\u00fdzvu k n\u00e1kupu \u010di prodeji jak\u00fdchkoli finan\u010dn\u00edch n\u00e1stroj\u016f.<\/p>\n<p>Tento materi\u00e1l byl p\u0159ipraven bez ohledu na konkr\u00e9tn\u00ed investi\u010dn\u00ed c\u00edle nebo finan\u010dn\u00ed situaci a nebyl p\u0159ipraven v souladu s pr\u00e1vn\u00edmi a regula\u010dn\u00edmi po\u017eadavky na podporu nez\u00e1visl\u00e9ho v\u00fdzkumu.<\/p>\n<p><strong>Ne v\u0161echny zmi\u0148ovan\u00e9 finan\u010dn\u00ed n\u00e1stroje a slu\u017eby jsou nab\u00edzeny na eToro<\/strong> a jak\u00e9koli odkazy na minulou v\u00fdkonnost finan\u010dn\u00edho n\u00e1stroje, indexu nebo investi\u010dn\u00edho produktu nejsou a nem\u011bly by b\u00fdt pova\u017eov\u00e1ny za spolehliv\u00fd ukazatel budouc\u00edch v\u00fdsledk\u016f. <strong>Dostupnost v\u0161ech v\u00fd\u0161e uveden\u00fdch produkt\u016f a slu\u017eeb se m\u016f\u017ee li\u0161it v z\u00e1vislosti na jurisdikci a zemi.<\/strong><\/p>\n<p>eToro nezaru\u010duje p\u0159esnost ani \u00faplnost obsahu tohoto pr\u016fvodce a nep\u0159eb\u00edr\u00e1 v tomto ohledu \u017e\u00e1dnou odpov\u011bdnost. P\u0159ed vlo\u017een\u00edm kapit\u00e1lu se ujist\u011bte, \u017ee rozum\u00edte rizik\u016fm spojen\u00fdm s obchodov\u00e1n\u00edm. Nikdy neriskujte v\u00edce, ne\u017e jste p\u0159ipraveni ztratit.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Blockchain je digit\u00e1ln\u00ed datab\u00e1ze, kter\u00e1 uchov\u00e1v\u00e1 informace v bloc\u00edch, kter\u00e9 jsou na sebe nav\u00e1z\u00e1ny v \u010dasov\u00e9 posloupnosti. Data jsou sd\u00edlena nap\u0159\u00ed\u010d s\u00edt\u00ed \u00fa\u010dastn\u00edk\u016f, co\u017e zt\u011b\u017euje jejich dodate\u010dn\u00e9 \u00fapravy. D\u00edky tomu je blockchain vhodn\u00fd pro bezpe\u010dn\u00e9 zaznamen\u00e1v\u00e1n\u00ed transakc\u00ed bez centr\u00e1ln\u00edho spr\u00e1vce. Co je to Blockchain technologie? Blockchain je digit\u00e1ln\u00ed \u00fa\u010detn\u00ed kniha, kter\u00e1 zaznamen\u00e1v\u00e1 transakce a ukl\u00e1d\u00e1&hellip;<\/p>\n","protected":false},"author":97,"featured_media":1050435,"parent":128985,"menu_order":451,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"sticky_cta_settings":"","footnotes":""},"asset_type":[],"class_list":["post-499219","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<title>Pr\u016fvodce technologi\u00ed blockchain krok za krokem<\/title>\n<meta name=\"description\" content=\"Objevte, co je blockchain a jak funguje. Zjist\u011bte, jak blockchain souvis\u00ed s kryptom\u011bnami a jak\u00e1 potenci\u00e1ln\u00ed rizika jsou s n\u00edm spojen\u00e1.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.etoro.com\/cs-cz\/wp-json\/wp\/v2\/pages\/499219\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pr\u016fvodce technologi\u00ed blockchain krok za krokem\" \/>\n<meta property=\"og:description\" content=\"Objevte, co je blockchain a jak funguje. 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