{"id":27493,"date":"2022-08-11T15:54:24","date_gmt":"2022-08-11T13:54:24","guid":{"rendered":"https:\/\/financer.sk\/?post_type=wiki&p=27493"},"modified":"2024-09-19T16:36:41","modified_gmt":"2024-09-19T14:36:41","slug":"co-je-blockchain","status":"publish","type":"wiki","link":"https:\/\/financer.sk\/kryptomeny\/clanky\/co-je-blockchain\/","title":{"rendered":"\u010co je blockchain?"},"content":{"rendered":"\n

Niekedy sa m\u00f4\u017ee zda\u0165, \u017ee pojmy ako blockchain alebo kryptomeny<\/a> s\u00fa pr\u00edli\u0161 komplikovan\u00e9. V skuto\u010dnosti v\u0161ak tomu nie je \u00faplne tak. Kryptomeny si m\u00f4\u017eete predstavi\u0165 ako tak\u00fa digit\u00e1lnu menu. <\/strong>Nie\u010do ako ke\u010f vid\u00edte va\u0161e peniaze vo va\u0161om internet bankingu. Fyzicky ich nedr\u017e\u00edte, ale napriek tomu ich m\u00e1te.<\/p>\n\n\n\n

V pr\u00edpade, \u017ee prev\u00e1dzate peniaze z \u00fa\u010dtu na \u00fa\u010det, ani s nimi fyzicky nepr\u00eddete do kontaktu. S kryptomenami je to podobne, av\u0161ak st\u00e1le s\u00fa relat\u00edvne nov\u00e9 a nezn\u00e1me.<\/strong><\/p>\n\n\n\n

Vo Financer.sk <\/strong>to v\u0161ak radi prirovn\u00e1vame k tomu, \u017ee ako ste si pred 30 rokmi nevedeli predstavi\u0165 plati\u0165 v\u0161ade kartou, tak mo\u017eno o \u010fal\u0161\u00edch 20 rokov, budeme u\u017e plati\u0165 be\u017ene kryptomenami. Samozrejme, nie je to tak\u00e9 jednoduch\u00e9, ale iba pre predstavu.<\/p>\n\n\n\n

Blockchain \u010do to je?<\/h2>\n\n\n\n

Blockchain je datab\u00e1za, a nie len tak nejak\u00e1. Ide o \u0161peci\u00e1lny typ distribuovanej decentralizovanej datab\u00e1zy. <\/strong>To znamen\u00e1, \u017ee nem\u00e1 jedno centr\u00e1lne d\u00e1tov\u00e9 centrum, ktor\u00e9 by bolo mo\u017en\u00e9 zni\u010di\u0165. Blockchain na jednom mieste nen\u00e1jdete, preto je svojim sp\u00f4sobom nekone\u010dn\u00fd.<\/p>\n\n\n\n

\u010eal\u0161ou \u0161peci\u00e1lnou vlastnos\u0165ou blockchainu je, \u017ee nem\u00e1 \u017eiadnu centr\u00e1lnu autoritu.<\/strong> To znamen\u00e1, \u017ee nepodlieha kontrole \u017eiadnej centr\u00e1lnej banky alebo akejko\u013evek inej in\u0161tit\u00facie. T\u00fdm je t\u00e1to technol\u00f3gia \u00faplne revolu\u010dn\u00e1, a je to aj jeden z d\u00f4vodov pre\u010do je okolo technol\u00f3gie blockchain tak\u00fd rozruch.<\/p>\n\n\n\n

Blockchain jedine\u010dn\u00fdm sp\u00f4sobom prep\u00e1ja technol\u00f3gie ako s\u00fa internet, kryptografia a prenosov\u00fd protokol. <\/strong>T\u00e1to technol\u00f3gia m\u00e1 v dne\u0161nom svete \u0161irok\u00e9 mo\u017enosti vyu\u017eitia, pri\u010dom aj jej potenci\u00e1l do bud\u00facnosti je obrovsk\u00fd.<\/p>\n\n\n

<\/div>

Investovanie do kryptomien<\/h3>

Chcete investova\u0165 do kryptomien a neviete ako na to? Pom\u00f4c\u0165 v\u00e1m m\u00f4\u017ee n\u00e1\u0161 \u010dl\u00e1nok o najv\u00e4\u010d\u0161ej kryptomene Bitcoin<\/a>. Ak neviete, kde nakupova\u0165 kryptomeny tak, aby ste nenaleteli podvodn\u00edkom, zistite viac o kryptomenov\u00fdch burz\u00e1ch.<\/a><\/p><\/div>\n\n\n

Ako funguje blockchain?<\/h2>\n\n\n\n

Ako sme u\u017e na\u010drtli, existuj\u00fa pravidl\u00e1 t\u00fdkaj\u00face sa prid\u00e1vania \u00fadajov do tejto datab\u00e1zy. N\u00e1sledne po ulo\u017een\u00ed d\u00e1t je prakticky nemo\u017en\u00e9 ich upravi\u0165 alebo odstr\u00e1ni\u0165. D\u00e1ta sa v priebehu \u010dasu prid\u00e1vaj\u00fa do \u0161trukt\u00far, ktor\u00e9 sa naz\u00fdvaj\u00fa bloky.<\/strong><\/p>\n\n\n\n

Ka\u017ed\u00fd blok je postaven\u00fd na poslednom bloku a obsahuje \u010das\u0165 inform\u00e1cie, ktor\u00e1 odkazuje na predch\u00e1dzaj\u00faci blok. Pri poh\u013eade na najaktu\u00e1lnej\u0161\u00ed blok m\u00f4\u017eeme skontrolova\u0165, \u010di bol vytvoren\u00fd po poslednom bloku. V pr\u00edpade anal\u00fdzy dan\u00e9ho bloku, tak postupne n\u00e1jdeme aj \u00faplne prv\u00fd blok, ktor\u00fd sa naz\u00fdva aj blok gen\u00e9zy.<\/strong><\/p>\n\n\n

<\/div>

Hash funkcie<\/h3>
Blockchain z\u00e1rove\u0148 vyu\u017e\u00edva takzvan\u00e9 hash funkcie. Hash funguje ako tak\u00e9 \u201elepidlo\u201c, ktor\u00e9 dr\u017e\u00ed bloky pohromade.<\/strong> Pozost\u00e1va z prevzatia \u00fadajov \u013eubovo\u013enej ve\u013ekosti a ich prechodu cez matematick\u00fa funkciu, aby sa vytvoril v\u00fdstup (hash), ktor\u00fd m\u00e1 v\u017edy rovnak\u00fa d\u013a\u017eku.<\/div>\n
\u00a0<\/div>\n
Tieto hashe s\u00fa zauj\u00edmav\u00e9 v tom, \u017ee existuje len mal\u00e1 pravdepodobnos\u0165, \u017ee n\u00e1jdete dva \u00fadaje, ktor\u00e9 d\u00e1vaj\u00fa presne rovnak\u00fd v\u00fdstup.<\/div><\/div>\n\n\n

V praxi funguje blockchain ako distribuovan\u00e1 \u00fa\u010dtovn\u00e1 kniha, ktor\u00fa nikto nekontroluje. To znamen\u00e1, \u017ee nikto nem\u00e1 pr\u00e1vomoc kontrolova\u0165 a upravova\u0165 z\u00e1znamy mimo pravidla danej knihy. <\/strong>Z tohto d\u00f4vodu m\u00f4\u017eete kon\u0161tatova\u0165, \u017ee \u00fa\u010dtovn\u00fa knihu s\u00fa\u010dasne vlastnia v\u0161etci \u00fa\u010dastn\u00edci.<\/p>\n\n\n

<\/div>

Blockchainov\u00e9 uzly<\/h3>Blockchainov\u00e9 uzly s\u00fa vlastne stroje, ktor\u00e9 s\u00fa pripojen\u00e9 k sieti.<\/strong> Tieto stroje ukladaj\u00fa k\u00f3pie blockchainu a zdie\u013eaj\u00fa inform\u00e1cie s in\u00fdmi strojmi. Tento proces neprebieha manu\u00e1lne, sta\u010d\u00ed si stiahnu\u0165 a spusti\u0165 softv\u00e9r. V niektor\u00fdch pr\u00edpadoch v\u0161ak term\u00edn blockchainov\u00fd uzol m\u00f4\u017ee zah\u0155\u0148a\u0165 aj in\u00fdch pou\u017e\u00edvate\u013eov integruj\u00facich so sie\u0165ov.<\/div>\n\n
Aktu\u00e1lne kurzy a ceny kryptomien<\/a><\/div>\n\n\n

Vyu\u017eitie technol\u00f3gie blockchain<\/h2>\n\n\n\n

V na\u0161om \u010dl\u00e1nku, sme u\u017e spomenuli, \u017ee technol\u00f3gia blockchain m\u00e1 obrovsk\u00fd potenci\u00e1l do bud\u00facnosti. <\/strong>Nesmieme v\u0161ak zab\u00fada\u0165, na \u010do sa vyu\u017e\u00edva aktu\u00e1lne, a to s\u00fa kryptomeny<\/a>. Na \u00favod treba pochopi\u0165, \u017ee blockchain nie je synonymum Bitcoinu, ani \u017eiadnej inej kryptomeny.<\/p>\n\n\n

<\/div>Kryptomeny a blockchain, nie s\u00fa ani z\u010faleka jedno a to ist\u00e9. Kryptomeny v\u0161ak vyu\u017e\u00edvaj\u00fa technol\u00f3giu blockchain, najm\u00e4 kv\u00f4li jej decentralizovanosti a bezpe\u010dnosti. <\/strong>Prvou kryptomenou, ktor\u00e1 bola postaven\u00e1 na syst\u00e9me blockchain, bol samozrejme Bitcoin.<\/div>\n\n\n

Technol\u00f3giu blockchain je mo\u017en\u00e9 aplikova\u0165 na \u0161irok\u00fa \u0161k\u00e1lu pr\u00edpadov pou\u017eitia. T\u00e1to technol\u00f3gia nie je ani z\u010faleka limitovan\u00e1 len na pou\u017eitie v kryptomenovom priemysle. <\/p>\n\n\n\n

V bud\u00facnosti by vyu\u017eitie blockchainu mohlo vyzera\u0165 aj takto:<\/p>\n\n\n

<\/h3>\n

<\/p>\n

    \n
  • Dod\u00e1vate\u013esk\u00e9 re\u0165azce. <\/strong>Technol\u00f3gia blockchain by v bud\u00facnosti mohla by\u0165 u\u017eito\u010dn\u00e1 napr\u00edklad pre dod\u00e1vate\u013esk\u00e9 re\u0165azce zaoberaj\u00face sa manipul\u00e1ciou s tovarom od dod\u00e1vate\u013ea k spotrebite\u013eovi. Blockchain by do odvetvia priniesol nov\u00fa \u00farove\u0148 transparentnosti. <\/li>\n
  • Zdravotn\u00e1 starostlivos\u0165.<\/strong> \u010eal\u0161\u00edm mo\u017en\u00fdm vyu\u017eit\u00edm je spo\u013eahliv\u00e9 uchov\u00e1vanie lek\u00e1rskych z\u00e1znamov. Centralizovan\u00e9 servery toti\u017e uchov\u00e1vaj\u00fa citliv\u00e9 a d\u00f4vern\u00e9 inform\u00e1cie. Z tohto d\u00f4vodu by bol transparentn\u00fd a bezpe\u010dn\u00fd blockchain ide\u00e1lnou platformou. <\/li>\n
  • Charita. <\/strong>Prij\u00edmanie a vyu\u017e\u00edvanie finan\u010dn\u00fdch prostriedkov je v pr\u00edpade charitat\u00edvnych organiz\u00e1ci\u00ed zna\u010dne komplikovan\u00e9 a obmedzen\u00e9. Rie\u0161en\u00edm m\u00f4\u017ee by\u0165 takzvan\u00e1 “krypto-filantropia”, ktor\u00e1 m\u00f4\u017ee sl\u00fa\u017ei\u0165 na ob\u00eddenie t\u00fdchto obmedzen\u00ed. Pou\u017eit\u00edm technol\u00f3gie blockchain sa navy\u0161e zabezpe\u010d\u00ed vy\u0161\u0161ia transparentnos\u0165. <\/li>\n
  • Crowdfundung. <\/strong>Crowdfundingov\u00e9 platformy, ktor\u00e9 p\u00f4sobia ako spr\u00e1vcovia prostriedkov si m\u00f4\u017eu \u010das\u0165 z nich vzia\u0165 vo forme poplatkov. To by mohli zmeni\u0165 inteligentn\u00e9 zml\u00favy technol\u00f3gie blockchain. Tieto zmluvy toti\u017e umo\u017e\u0148uj\u00fa bezpe\u010dnej\u0161\u00ed a plne automatizovan\u00fd crowdfunfing, ktor\u00e9ho podmienky doh\u00f4d s\u00fa jasne definovan\u00e9 v po\u010d\u00edta\u010dovom k\u00f3de. <\/li>\n
  • Digit\u00e1lna identita. <\/strong>Nie je tajomstvom, \u017ee obrovsk\u00e9 mno\u017estvo na\u0161ich \u00fadajov je ulo\u017een\u00e9 na centralizovan\u00fdch serveroch, kde s\u00fa analyzovan\u00e9 bez n\u00e1\u0161ho vedomia. Technol\u00f3gia blockchain by mohla umo\u017eni\u0165 pou\u017e\u00edvate\u013eom prevzia\u0165 vlastn\u00edctvo nad t\u00fdmito \u00fadajmi.<\/li>\n<\/ul>\n\n\n

    Verejn\u00e9 a s\u00fakromn\u00e9 blockchainy<\/h2>\n\n\n\n

    Z\u00e1klady blockchainov\u00e9mu priemyslu polo\u017eil pr\u00e1ve Bitcoin.<\/strong> V\u010faka tomu sa blockchain rozr\u00e1stol do dne\u0161nej podoby. Ke\u010f Bitcoin za\u010dal nabera\u0165 na popularite a stal sa legit\u00edmnym finan\u010dn\u00fdm akt\u00edvom, za\u010dalo sa uvo\u017eova\u0165 aj o \u010fal\u0161\u00edch mo\u017enostiach vyu\u017eitia do bud\u00facnosti.<\/p>\n\n\n\n

    Kryptomena Bitcoin sa pova\u017euje za takzvan\u00fd verejn\u00fd blockchain. <\/strong>Tranzakcie, ktor\u00e9 s\u00fa s \u0148ou spojen\u00e9 si m\u00f4\u017ee prezera\u0165 kedyko\u013evek a ktoko\u013evek s pripojen\u00edm na internet. <\/p>\n\n\n\n

    Existuj\u00fa v\u0161ak aj takzvan\u00e9 s\u00fakromn\u00e9 blockchainy. <\/strong>Tieto syst\u00e9my maj\u00fa ur\u010dit\u00e9 pravidl\u00e1 na to, kto m\u00f4\u017ee dan\u00fd blockchain vidie\u0165 a integrova\u0165 s n\u00edm. Tak\u00e9to blockchainy maj\u00fa vyu\u017eitie najm\u00e4 v podnikov\u00fdch prostrediach.<\/p>\n\n\n\n

    V\u00fdhody a nev\u00fdhody<\/h2>\n\n\n
    • \n

      Princ\u00edp decentraliz\u00e1cie<\/p>\n<\/li>

    • \n

      Distribuovan\u00e1 datab\u00e1za<\/p>\n<\/li>

    • \n

      Vysok\u00e1 \u00farove\u0148 bezpe\u010dnosti<\/p>\n<\/li>

    • \n

      Odmeny za potvrdzovanie tranzakci\u00ed<\/p>\n<\/li><\/ul><\/div>\n\n

      • \n

        Relat\u00edvne nov\u00e1 technol\u00f3gia<\/p>\n<\/li><\/ul><\/div>","protected":false},"author":87,"featured_media":78672,"comment_status":"open","ping_status":"closed","template":"","meta":{"disable_branded_featured_image":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","ep_exclude_from_search":false,"footnotes":""},"categories":[1111],"_links":{"self":[{"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/wiki\/27493"}],"collection":[{"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/types\/wiki"}],"author":[{"embeddable":true,"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/users\/87"}],"replies":[{"embeddable":true,"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/comments?post=27493"}],"version-history":[{"count":32,"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/wiki\/27493\/revisions"}],"predecessor-version":[{"id":77975,"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/wiki\/27493\/revisions\/77975"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/media\/78672"}],"wp:attachment":[{"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/media?parent=27493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/financer.sk\/wp-json\/wp\/v2\/categories?post=27493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}