{"id":157700,"date":"2018-02-12T07:00:00","date_gmt":"2018-02-12T07:00:00","guid":{"rendered":"https:\/\/bm.dev.synology.me\/?p=157700"},"modified":"2018-02-12T07:00:00","modified_gmt":"2018-02-12T07:00:00","slug":"ce-este-bitcoin-si-cum-functioneaza","status":"publish","type":"post","link":"https:\/\/bm.dev.synology.me\/?p=157700","title":{"rendered":"Ce este bitcoin \u015fi cum func\u0163ioneaz\u0103?"},"content":{"rendered":"<p>\nBitcoinul nu este emis \u015fi nici sus\u0163inut de niciun guvern de pe glob. Un bitcoin are valoare doar \u00een m\u0103sura \u00een care utilizatorii sunt de acord c\u0103 are. Pre\u0163ul unei monezi este stabilit de cerere \u015fi ofert\u0103.<\/p>\n<p>\nBitcoin este o moned\u0103 virtul\u0103 (un bun) ce poate fi stocat \u00een <a href=\"http:\/\/www.businessmagazin.ro\/cover-story\/ce-este-si-cum-functioneaza-tehnologia-blockchain-16981797\">blockchain<\/a> (registru). A fost creat \u015fi utilizat ca o recompens\u0103 pentru oamenii care \u00ee\u015fi pun calculatoarele s\u0103 calculeze algoritmi complec\u015fi \u015fi astfel s\u0103 men\u0163in\u0103 re\u0163eaua \u00een via\u0163\u0103.<\/p>\n<p>\nProcesul de transfer de bitcoin este asem\u0103n\u0103tor cu transferul bancar. C\u00e2nd vrei s\u0103 trimi\u0163i o sum\u0103 de bani prin transfer bancar, completezi datele destinatarului \u015fi datele contului t\u0103u. Banca ia suma de bani de la tine din cont \u015fi o trimite destinatarului. Utilizatorii trebuie s\u0103 aib\u0103 \u00eencredere \u00een banc\u0103 ca s\u0103 ia banii din contul vostru \u015fi s\u0103-l trimit\u0103 la destinatar. <a href=\"http:\/\/www.businessmagazin.ro\/cover-story\/ce-este-si-cum-functioneaza-tehnologia-blockchain-16981797\">Blockchainul<\/a> de bitcoin este o baz\u0103 de date (registru) care efectueaz\u0103 acelea\u015fi func\u0163ii de urm\u0103rire a banilor, dar f\u0103r\u0103 o banc\u0103 sau alt\u0103 autoritate central\u0103.<\/p>\n<p>\nTranzac\u0163iile cu bitcoin sunt realizate prin consensul utilizatorilor re\u0163elei descentralizate. Aceste tranzac\u0163ii pot fi realizate prin companii (exchange-uri) care ofer\u0103 portofele electronice ce urc\u0103 datele \u00een re\u0163ea. Toate tranzac\u0163iile noi sunt trimise c\u0103tre re\u0163ea pentru verificare, opera\u0163iune realizat\u0103 de mineri.<\/p>\n<p>\n<strong><a href=\"http:\/\/www.businessmagazin.ro\/cover-story\/cum-cumperi-bitcoin-etherum-si-alte-criptomonede-16981806\"><span style=\"color:#3366ff;\">Cum cumperi bitcoin, etherum \u015fi alte criptomonede<\/span><\/a><\/strong><\/p>\n<p>\nMinerii sunt utilizatorii cu calculatoare extrem de puternice care se angajeaz\u0103 s\u0103 verifice aceste tranzac\u0163ii, prin g\u0103sirea solu\u0163iilor la algoritmi matematici complec\u015fi. Odat\u0103 solu\u0163ia g\u0103sit\u0103, tranzac\u0163ia este trecut\u0103 \u00een registru, de unde nu va mai putea fi \u015ftears\u0103 vreodat\u0103. Minerii fac asta pentru c\u0103 primesc bitcoin \u015fi dreptul de a scrie tranzac\u0163ii \u00eentr-un bloc; ei primesc un comision din partea utilizatorilor care doresc s\u0103 fac\u0103 tranzac\u0163ii.<\/p>\n<p>\n<strong>PRINCIPALELE CARACTERISTICI ALE BITCOINULUI:<\/strong><\/p>\n<p>\n<strong>1. Este descentralizat<\/strong><\/p>\n<p>\nNicio institu\u0163ie nu controleaz\u0103 re\u0163eaua, ci este men\u0163inut\u0103 de un grup de voluntari \u015fi fiecare dintre ei \u0163ine o copie a registrului.&nbsp;<\/p>\n<p>\n<strong>2. Num\u0103r limitat de monede<\/strong><\/p>\n<p>\nSpre deosebire de monedele tradi\u0163ionale (lei, euro, dolari), bitcoin este \u00een num\u0103r finit, iar alimentarea cu bitcoin se face strict pe baza rezolv\u0103rii algoritmului. Asta \u00eenseamn\u0103 c\u0103 bitcoinul devine mai atr\u0103g\u0103tor deoarece \u00een timp ce cererea cre\u015fte, oferta r\u0103m\u00e2ne aceea\u015fi: 21 de milioane de bitcoini.<\/p>\n<p>\n<strong>3. Psudoanonimitate<\/strong><\/p>\n<p>\nPentru c\u0103 nu este nicio unitate central\u0103 care s\u0103 controleze procesul, utilizatorii de bitcoin nu sunt nevoi\u0163i s\u0103-\u015fi dezv\u0103luie identitatea. A\u015fa c\u0103 re\u0163eaua \u015fi ceilal\u0163i utilizatori nu pot vedea c\u0103 X i-a trimis 2 bitcoin lui Y, ci pot vedea doar c\u0103 adresa de\u0163inut\u0103 de X trimite 2 bitcoini la adresa de\u0163inut\u0103 de Y. C\u00e2nd o solicitare de tranzac\u0163ie este trimis\u0103, protocolul bitcoin verific\u0103 toate tranzac\u0163iile anterioare pentru a confirma c\u0103 expeditorul are bitcoinii necesari precum \u015fi autoritatea de a le trimite.<\/p>\n<p>\n<strong>4. Nu este flexibil<\/strong><\/p>\n<p>\nOdat\u0103 ce X a f\u0103cut o tranzac\u0163ie c\u0103tre Y, aceast\u0103 tranzac\u0163ie nu mai poate fi modificat\u0103, iar X poate primii banii \u00eenapoi doar dac\u0103 Y \u00eei trimite voluntar. Acest sistem a fost implementat pentru ca tranzac\u0163iile s\u0103 nu fie falsificate \u015fi modificate.<\/p>\n<h2>\n<a href=\"http:\/\/www.businessmagazin.ro\/cover-story\/tehnologia-care-ar-putea-schimba-lumea-16977439\"><strong><span style=\"color:#3366ff;\">Cite\u015fte mai multe despre bitcoin \u015fi despre blockchain aici<\/span><\/strong><\/a><\/h2>\n","protected":false},"excerpt":{"rendered":"<p>Un bitcoin este o moned\u0103 virtual\u0103, dar nu este un leu, dolar sau euro. Nu poate fi \u0163inut \u00een m\u00e2n\u0103 \u015fi nu este recunoscut drept moned\u0103 de schimb de majoritatea magazinelor, de\u015fi exist\u0103 comercian\u0163i \u00een lume \u015fi \u00een Rom\u00e2nia care accept\u0103 plata \u00een bitcoin.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[698],"tags":[32888,7704,7873,12825,17331,387,430,93,17847,80,98,11528],"class_list":["post-157700","post","type-post","status-publish","format-standard","hentry","category-cover-story","tag-acceptare","tag-comercianti","tag-dolar","tag-drept","tag-functionare","tag-magazine","tag-majoritate","tag-plati","tag-recunoastere","tag-refuz","tag-romania","tag-schimb"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/157700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=157700"}],"version-history":[{"count":0,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/157700\/revisions"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=157700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=157700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=157700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}