{"id":39066,"date":"2019-10-31T22:27:39","date_gmt":"2019-10-31T19:27:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/orakuly-prihodyat-na-pomoshh\/"},"modified":"2019-10-31T22:27:39","modified_gmt":"2019-10-31T19:27:39","slug":"orakuly-prihodyat-na-pomoshh","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/orakuly-prihodyat-na-pomoshh","title":{"rendered":"Oraklid tulevad appi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Oraklid tulevad appi\" src=\"\/wp-content\/uploads\/2019\/10\/b1fa953539508267c5bb28430de2d41a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<i>Plokiaat-oraklid lahendavad plokiaadi v\u00e4lise maailma teabe edastamise probleemi. Kuid me peame teadma, millistele neist me v\u00f5ime usaldada.<\/i><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>V <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.wavesplatform.com\/waves-platform-releases-data-oracle-tool-4105f12cdc57\">artiklis<\/a><\/noindex> katalooge k\u00e4ivitamisest <noindex><a rel=\"nofollow\" href=\"https:\/\/oracles.wavesexplorer.com\">Waves Oracles<\/a><\/noindex> oleme kirjutanud oraklite t\u00e4htsusest plokiaadis.<\/p>\n<p>Detsentraliseeritud rakendustel puudub p\u00e4\u00e4s plokiaadist v\u00e4ljaspool olevatele andmetele. Seet\u00f5ttu luuakse v\u00e4ikeseid programme \u2013 orakleid \u2013, mis p\u00e4\u00e4sevad ligi vajalikule teabele v\u00e4lisest maailmast ja salvestavad selle plokiaadi.<\/p>\n<p>Andmeallika t\u00fc\u00fcbi j\u00e4rgi v\u00f5ib orakleid jagada kolme kategooriasse: tarkvaralised, riistvaralised ja inimlikud.<\/p>\n<p><b>Tarkvaralised oraklid<\/b> saavad ja t\u00f6\u00f6tlevad andmeid internetist \u2013 nagu \u00f5hutemperatuur, toodete hinnad, rongide ja lennukite viivitused. Teave saadakse veebiallikaid, n\u00e4iteks API-de kaudu, ja orakel ekstraktsioonib selle ning salvestab plokiaadi. Kuidas luua lihtsat tarkvaralist oraklit loe <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.wavesplatform.com\/ru\/waves-oracles\/how-to-create-an-oracle.html\">siit<\/a><\/noindex>.<\/p>\n<p><b>Riistvaralised oraklid<\/b> j\u00e4lgivad reaalses maailmas objekte seadmete ja sensorite abil. N\u00e4iteks kalibreeritud kaamera, mis j\u00e4lgib liini \u00fcletamist, registreerib autod, mis sisenevad kindlasse piirkonda. Oraakel fikseerib liini \u00fcletamise fakti plokiahelas ning nende andmete p\u00f5hjal saab detsentraliseeritud rakenduse skript n\u00e4iteks algatada trahvi m\u00e4\u00e4ramist ja tokenite mahav\u00f5tmist auto omaniku kontolt.<\/p>\n<p><b>Inimese oraaklid<\/b> kasutavad inimese sisestatud andmeid. Nad peetakse k\u00f5ige arenenumateks, kuna neil on s\u00f5ltumatu vaatepunkt s\u00fcndmuse tulemusele.<\/p>\n<p>Hiljuti esitlesime t\u00f6\u00f6riista, mis v\u00f5imaldab salvestada plokiahelas oraakli andmeid antud spetsifikatsiooni j\u00e4rgi. See t\u00f6\u00f6tab \u00e4\u00e4rmiselt lihtsalt: tuleb vaid registreerida <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.wavesplatform.com\/ru\/waves-oracles\/create-an-oracle-card-with-waves-oracle.html\">oraakli kaart<\/a><\/noindex>, t\u00e4ites spetsifikatsiooni. P\u00e4rast seda saab andmete tehinguid vastavalt sellele spetsifikatsioonile avaldada Waves Oraclesi liidese kaudu. Loe t\u00f6\u00f6riista kohta l\u00e4hemalt <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.wavesplatform.com\/ru\/waves-oracles\/data-transaction-tool.html\">meie dokumentatsioonis<\/a><\/noindex>.<\/p>\n<p><img decoding=\"async\" alt=\"Oraklid tulevad appi\" src=\"\/wp-content\/uploads\/2019\/10\/a98f19c1571841064b739c6ed2fcec44.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nStandardsed t\u00f6\u00f6riistad ja liidendid lihtsustavad elu nii arendajatele kui ka plokiahela teenuste kasutajatele. Meie t\u00f6\u00f6riist on kasulik inimeste oraklite jaoks ning seda saab kasutada n\u00e4iteks sertifikaatide v\u00f5i autori\u00f5iguste registreerimiseks mingite objektide suhtes.<\/p>\n<p>Kuid oraklite kasutamisega kaasneb usaldusv\u00e4\u00e4rsuse k\u00fcsimus neilt saadud teabe kohta. Kas allikas on usaldusv\u00e4\u00e4rne? Kas andmed saadakse \u00f5igeaegselt? Lisaks on olemas risk, et oracle petab kasutajaid, et saavutada isiklikku kasu, andes tahtlikult vale teavet.<\/p>\n<p>V\u00f5tame n\u00e4iteks orakli, mis pakub spordis\u00fcndmuste teavet detsentraliseeritud kihlveob\u00f6rsi jaoks.<\/p>\n<p>S\u00fcndmus on UFC 242 peamine m\u00f5\u00f5duv\u00f5tt, Habib Nurmagomedov vastab Dustin Poiriele. Kihlveokontorite hinnangul on Nurmagomedov selge favoriit. Tema v\u00f5idu peale pandud kihlveo koefitsient oli 1,24, mis vastab 76% t\u00f5en\u00e4osusele. Poiriele panustamise koefitsient oli 4,26 (22%), samas kui viiki hindasid kihlveokontorid koefitsiendiks 51,0 (2%).<\/p>\n<p><img decoding=\"async\" alt=\"Oraklid tulevad appi\" src=\"\/wp-content\/uploads\/2019\/10\/01e766411da75639e7d1d1e01a6d7937.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSkript v\u00f5tab kasutajate panuseid k\u00f5igi kolme v\u00f5imaliku tulemuse kohta, kuni see saab orakult teavet tegeliku lahingu tulemuse kohta. See on ainus kriteerium v\u00f5itude jaotamiseks.<\/p>\n<p>Praegu on teada, et v\u00f5idu sai Nurmagomedov. Kuid kujutame ette, et ebaaus orakuv\u00f5tja, kes plaanis petta, pani panuse k\u00f5ige soodsamate koefitsientidega tulemusele \u2014 viigile. Kui panuste pank saavutas suure mahu, k\u00e4ivitab orakuv\u00f5tja vale teabe registreerimise plokiahelas, v\u00e4idetes, et lahing l\u00f5ppes viigiga. Detsentraliseeritud vahetuse skript ei oma v\u00f5imalust saadud andmete t\u00f5esust kontrollida ning jaotab vaid v\u00f5idud nende andmete alusel.<\/p>\n<p>Kui potentsiaalne kasum sellisest petmisest on suurem kui ausa orakuv\u00f5tja prognoositav tulu ja samal ajal on kohtusse p\u00f6\u00f6rdumise risk madal, siis suureneb ebaausate tegude t\u00f5en\u00e4osus orakuv\u00f5tja poolt m\u00e4rgatavalt.<\/p>\n<p>\u00dcks v\u00f5imalik lahendus probleemile on andmete taotlemine mitmelt orakult ja saadud v\u00e4\u00e4rtuste viimine konsensusele. Saame v\u00e4lja tuua mitmeid konsensuse t\u00fc\u00fcpe:<\/p>\n<ul>\n<li>k\u00f5ik oraaklid andsid \u00fchtset teavet<\/li>\n<li>enamus oraakleid andis \u00fchtset teavet (2 3-st, 3 4-st jne)<\/li>\n<li>oraaklite andmete keskmistamine (v\u00f5imalik on erinevate variatsioonide olemasolu, kus eelnevalt loobutakse maksimaalsest ja minimaalsest v\u00e4\u00e4rtusest)<\/li>\n<li>k\u00f5ik oraaklid esitasid \u00fchtset teavet eelnevalt kokkulepitud lubatud k\u00f5rvalekaldega (n\u00e4iteks erinevate allikate finantskoteeringud v\u00f5ivad erineda 0,00001 v\u00f5rra ja t\u00e4pse vaste saamine on peaaegu v\u00f5imatu \u00fclesanne)<\/li>\n<li>vali saadud andmetest ainult unikaalsed v\u00e4\u00e4rtused<\/li>\n<\/ul>\n<p>\nNaaseme meie detsentraliseeritud panuste b\u00f6rsi juurde. Kasutades konsensust \u201e3 4-st\u201d, ei suudaks \u00fcks oraakel, kes teatas m\u00e4ngu viigilisest tulemuses, m\u00f5ju avaldada skripti t\u00e4itmisele, tingimusel et kolm muud oraaklit annavad usaldusv\u00e4\u00e4rset teavet.<br \/>\nAga pahatahtlik kasutaja v\u00f5ib omada ka kolme neljast oraaklist, ja sel juhul suudab ta tagada otsustava enamuse.<\/p>\n<p>Oraklite usaldusv\u00e4\u00e4rsuse tagamiseks v\u00f5iks neile kehtestada reitingus\u00fcsteemi v\u00f5i karistuste s\u00fcsteemi valeandmete esitamise eest. Samuti v\u00f5iks pakkuda preemiat usaldusv\u00e4\u00e4rsuse eest. Kuid \u00fckski meede ei suuda t\u00e4ielikult v\u00e4ltida n\u00e4iteks reitingu kokkupanemist v\u00f5i ebaausate en majority tegude toimumist.<\/p>\n<p>Kas on siis m\u00f5tet leiutada keerulisi teenuseid, v\u00f5i piisab lihtsalt konsensusvahendi olemasolust, mis v\u00f5imaldab, nagu supermarketis, valida n\u00e4iteks viis oraklit, millest saada vajalikke andmeid, m\u00e4\u00e4rata konsensuse t\u00fc\u00fcbi ja saada tulemus?<\/p>\n<p>N\u00e4iteks vajab detsentraliseeritud rakendus temperatuuriandmeid, mis on v\u00e4ljendatud celsiuse kraadides. Oraklite kataloogist leiame neli oraklit, mis selliseid andmeid pakuvad, m\u00e4\u00e4rame konsensuse t\u00fc\u00fcbiks 'keskmine v\u00e4\u00e4rtus' ja teeme p\u00e4ringu.<\/p>\n<p>Oletame, et oraklid andsid v\u00e4\u00e4rtused: 18, 17, 19 ja 21 kraadi. Kolme kraadi erinevus v\u00f5ib osutuda skripti t\u00e4itmiseks kriitiliseks. Teenus t\u00f6\u00f6tleb tulemuse ja saab keskmiseks temperatuuriks 18,75 kraadi. Selle numbriga t\u00f6\u00f6tab detsentraliseeritud rakenduse skript.<\/p>\n<p><img decoding=\"async\" alt=\"Oraklid tulevad appi\" src=\"\/wp-content\/uploads\/2019\/10\/f65c39cf465e1f35242bc1d46f5f8f8c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nL\u00f5ppkokkuv\u00f5ttes j\u00e4\u00e4b otsus tarbija k\u00e4tte: kas usaldada \u00fchte oraklit ja kasutada selle andmeid v\u00f5i luua konsensus mitmest oraklist, valitud oma \u00e4ran\u00e4gemise j\u00e4rgi.<\/p>\n<p>Igal juhul on andmeoraklid piisavalt uus valdkond. See on alles etapis, kus kasutajad saavad ise m\u00e4\u00e4rata, millises suunas see areneb. Seet\u00f5ttu soovime kuulda teie arvamust. Kas \u00fclalnimetatud t\u00f6\u00f6riist oraklite jaoks on vajalik? Kuidas n\u00e4ete tulevikku andmeoraklite osas \u00fcldiselt? Jagage oma m\u00f5tteid kommentaarides ja meie ametlikus grupis. <noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/WavesCommunityRU\">Telegram<\/a><\/noindex>.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/waves\/blog\/471964\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0411\u043b\u043e\u043a\u0447\u0435\u0439\u043d-\u043e\u0440\u0430\u043a\u0443\u043b\u044b \u0440\u0435\u0448\u0430\u044e\u0442 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438 \u0432 \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0438\u0437 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u043c\u0438\u0440\u0430. \u041d\u043e \u043d\u0430\u043c \u0432\u0430\u0436\u043d\u043e \u0437\u043d\u0430\u0442\u044c, \u043a\u0430\u043a\u0438\u043c \u0438\u0437 \u043d\u0438\u0445 \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u0434\u043e\u0432\u0435\u0440\u044f\u0442\u044c. \u0412 \u0441\u0442\u0430\u0442\u044c\u0435 \u043e \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430 Waves Oracles \u043c\u044b \u043f\u0438\u0441\u0430\u043b\u0438 \u043e \u0432\u0430\u0436\u043d\u043e\u0441\u0442\u0438 \u043e\u0440\u0430\u043a\u0443\u043b\u043e\u0432 \u0434\u043b\u044f \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d\u0430. \u0414\u0435\u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043d\u0435 \u0438\u043c\u0435\u044e\u0442 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0434\u0430\u043d\u043d\u044b\u043c \u0432\u043d\u0435 \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d\u0430. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u0441\u043e\u0437\u0434\u0430\u044e\u0442\u0441\u044f \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b \u2013 \u043e\u0440\u0430\u043a\u0443\u043b\u044b, \u2013 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u043b\u0443\u0447\u0430\u044e\u0442 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u043c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":29311,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-39066","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" 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property=\"og:url\" content=\"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/orakuly-prihodyat-na-pomoshh\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2019-10-31T19:27:39+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2019-10-31T19:27:39+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Oraklid tulevad appi | ProHoster","description":"Plokiahela oraklid lahendavad probleemi, kuidas edastada v\u00e4lismaailma teavet plokiahelasse. Kuid me peame teadma, kellele me saame usaldada. Waves Oracles katalooge k\u00e4ivitavas artiklis kirjutasime oraklite t\u00e4htsusest plokiahelas. Detsentraliseeritud rakendustel ei ole juurdep\u00e4\u00e4su andmetele, mis asuvad v\u00e4ljaspool plokiahja. Seet\u00f5ttu luuakse v\u00e4ikesed programmid \u2013 oraklid \u2013, mis hankivad vajalikud andmed.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/orakuly-prihodyat-na-pomoshh","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041e\u0440\u0430\u043a\u0443\u043b\u044b \u043f\u0440\u0438\u0445\u043e\u0434\u044f\u0442 \u043d\u0430 \u043f\u043e\u043c\u043e\u0449\u044c | ProHoster","og:description":"\u0411\u043b\u043e\u043a\u0447\u0435\u0439\u043d-\u043e\u0440\u0430\u043a\u0443\u043b\u044b 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