{"id":2563,"date":"2020-04-28T16:59:52","date_gmt":"2020-04-28T16:59:52","guid":{"rendered":"https:\/\/ecd.rs\/blog\/bitkoin-i-blokcein"},"modified":"2022-02-09T13:26:37","modified_gmt":"2022-02-09T11:26:37","slug":"bitkoin-i-blokcein","status":"publish","type":"post","link":"https:\/\/ecd.rs\/en\/blog\/bitkoin-i-blokcein\/","title":{"rendered":"Bitkoin i blok\u010dejn"},"content":{"rendered":"

Bitkoin i blok\u010dejn<\/h3>\n

Bitkoin i blok\u010dejn su rezultat matematike-algoritma, ekonomske teorije igara i programiranja.<\/p>\n

Nisam siguran kako radi motor sa unutra\u0161njim sagorevanjem u automobilu, a ni mobilni, ali znam da koristim taj automobili i svestan sam benefita koje donosi. Pri\u010da se da je blok\u010dejn fantasti\u010dna nova tehnologija, i da \u0107e kriptovalute<\/a> promeniti finansijski sistem iz korena.<\/p>\n

Koliko je zaista potrebno detaljno rasklopiti na primer bitkoinov algoritam za \u0161iru populaciju i da li bi ta ista populacija bila u stanju da razume? Za strpljive i hrabrije evo izazova: white paper<\/a>.<\/p>\n

Za one koji slabije barataju matemati\u010dkim, ekonomskim pojmovima, bitkoin bi se mogao opisati kao re\u0161enje koje mo\u017ee olak\u0161ati i unaprediti u vi\u0161e aspekata komunikaciju i razmenu digitalnog sadr\u017eaja izme\u0111u pojedinaca ili grupa koje se me\u0111usobno ne poznaju ili nemaju izgra\u0111eno me\u0111usobno poverenje.<\/p>\n

\"\"<\/p>\n

Koja su to olak\u0161anja?<\/h3>\n

Razmena digitalnog sadr\u017eaja postoji prili\u010dno dugo i funkcioni\u0161e na sasvim dobrom nivou. Tamo gde bitkoin i blok\u010dejn donose unapre\u0111enje pre svega je sfera digitalnog sadr\u017eaja visoke vrednosti. Digitalni sadr\u017eaj visoke vrednosti zahteva savr\u0161en ili skoro savr\u0161eno bezbedan protokol.<\/p>\n

Blok\u010dejn i bitkoin nude upravo neke od elemenata koje bi trebalo da ima jedan tako bitan protokol:<\/p>\n

Transakcije se mogu obavljati brzo, bez fizi\u010dkih ograni\u010denja.
\nTransakcije se obavljaju besplatno ili veoma jeftino.
\nIako se dve strane koje \u017eele obaviti transakciju ne poznaju, nema potrebe za posrednicima koji bi pomogli u tom procesu.
\nFunkcioni\u0161e putem decentralizovanog sistema. Niko nema potpunu kontrolu nad sistemom. Pravila igre su ista za sve u\u010desnike. Apsolutno svakome je dozvoljeno da bude deo sistema, aktivni u\u010desnik ili posmatra\u010d.
\nDigitalni sadr\u017eaj koji posedujemo ili razmenjujemo se ne mo\u017ee duplirati, kopirati ili dva puta potro\u0161iti u istom trenutku (re\u0161en double spending<\/a> problem).
\nNe postoji na\u010din da se kompromituje, \u0161to je od izuzetnog zna\u010daja kada je u pitanju ne\u0161to veoma vredno.<\/p>\n

Algoritam na kome je bitkoin baziran obezbe\u0111uje sve pomenuto.<\/p>\n

\u0160ta je bitkoinov blok\u010dejn?<\/h3>\n

Blok\u010dejn je infrastruktura dok je bitkoin digitalni sadr\u017eaj koji uspe\u0161no razmenjujemo pomo\u0107u te infrastrukture. Sticajem okolnosti je u me\u0111uvremenu postao izuzetno vredan digitalni sadr\u017eaj!<\/p>\n

Blok\u010dejn je distribuirana baza podataka. Spisak svih transakcija koje su se dogodile kada su svi postoje\u0107i bitkoini u pitanju. Ideja je da postoji infrastruktura koja omogu\u0107ava ve\u0107 pomenutu komunikaciju ili razmenu informacije, digitalnog sadr\u017eaja visoke vrednosti izme\u0111u pojedinaca ili grupa. U\u010desnici ne moraju nu\u017eno imati izgra\u0111en odnos poverenja. I dalje mo\u017eemo biti sigurni da \u0107e se transakcija realizovati ukoliko su ispunjeni uslovi tj pravila igre.<\/p>\n

Blok\u010dejn se sastoji od niza blokova<\/a>. Transakcije koje svojevoljno pravimo se upisuju u blokove. Blokovi se re\u0111aju jedan na drugi jo\u0161 od 2009. godine, vrlo ujedna\u010denom dinamikom. Svaki blok sadr\u017ei obra\u0111ene transakcije (grupu informacija) koje obuhvataju u proseku poslednjih 10ak minuta vremena.<\/p>\n

\u0160ta je glavni doprinos blok\u010dejna, s obzirom da baze podataka nisu ne\u0161to \u0161to je novo?<\/h3>\n

Knjigovodstvo postoji mnogo pre 2009.godine.<\/p>\n

Jedan od inputa svakog narednog bloka<\/a> je na neki na\u010din pored ostalih stvari, i informacija koja proizilazi iz prethodnog bloka. Bilo kakva promena na bilo kom od pre\u0111a\u0161njih blokova nu\u017eno stvara promenu na kompletnom lancu koji se nadovezuje na taj blok. To nam daje za pravo da tvrdimo da je blok\u010dejn baza podataka istorijski nepromenljiva. Ta\u010dnije, mogu\u0107e je u nekim grani\u010dnim slu\u010dajevima prepraviti istoriju. Istog trenutka se mo\u017ee desiti da sistem izgubi smisao, poverenje, samim tim i upotrebnu vrednost, zbog transparentnosti koju pru\u017ea blok\u010dejn.<\/p>\n

Transparentnost blok\u010dejna je upravo slede\u0107a odre\u0111uju\u0107a karakteristika. Svakome je dostupan uvid u blok\u010dejn u svakom trenutku. Svako od nas mo\u017ee pogledati istoriju transakcija svih bitkoina koje su se dogodile od 2009. godine do danas, i svojih i tu\u0111ih.<\/p>\n

Koja finansijska institucija ili mre\u017ea je spremna da bilo kojoj radoznaloj osobi otvori svoje \u201eknjige\u201c? Jedan razlog za opreznost je naravno i pravo na privatnost korisnika usluga odre\u0111ene banke na primer.<\/p>\n

Drugi je da tolika transparentnost poslovanja mo\u017ee ista\u0107i odre\u0111ene radnje ili aktivnosti koje su ilegalne ili ne nu\u017eno ilegalne, ali mogu na primer ugroziti ugled konrektnog pravnog lica.<\/p>\n

Bitkoin i blok\u010dejn ne re\u0161avaju sve probleme niti je bitkoin kao novac apsolutno bolji od novca kakav danas poznajemo.
\nBitkoin je u osnovi nastao kao ideja druga\u010dijeg digitalnog novca. Digitalni novac koji je danas daleko zastupljeniji od onog u fizi\u010dkom obliku, nije ni\u0161ta drugo nego skup podataka ili informacija na raznim serverima ili ra\u010dunarima razli\u010ditih banaka.<\/p>\n

Uzev\u0161i u obzir pomenute karakteristike bitkoina, lako se mo\u017ee zaklju\u010diti da mogu\u0107nost primene bitkoina ili sli\u010dnih projekata daleko prevazilazi finansijski sektor. Njegove pozitivne karakteristike se mogu iskoristiti u digitalnoj sferi gde postoji u isto vreme te\u017enja ka o\u010duvanju privatnosti i transparentosti. Zatim, gde postoji digitalni sadr\u017eaj velike vrednosti. A danas, je digitalni svet ve\u0107i deo na\u0161eg \u017eivota i okru\u017eenja u kome funkcioni\u0161emo. Stoga je i sve ve\u0107a potreba za sli\u010dnim ili istim re\u0161enjima koje nude bitkoin i blok\u010dejn.<\/p>\n


\nAutor: Marko Matanovi\u0107<\/a>, ECD<\/a> COO, MSc in Business Management<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Blok\u010dein i kriptovalute su rezultat matematike-algoritma, ekonomske teorije igara i programiranja.<\/p>\n

Nisam siguran kako radi motor sa unutra\u0161njim...","protected":false},"author":8,"featured_media":1643,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[319],"tags":[176,192,187,232,233],"class_list":["post-2563","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vodici-sr-en","tag-bitkoin-en","tag-blokcejn-en","tag-kriptovalute-en","tag-transparentnost-en","tag-uvod-en"],"acf":[],"yoast_head":"\nBitkoin i blok\u010dejn - ECD<\/title>\n<meta name=\"description\" content=\"\u0160ta je bitkoin, a \u0161ta blok\u010dejn? 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