{"id":90631,"date":"2020-08-04T01:42:10","date_gmt":"2020-08-03T23:42:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/ob-orakulah-dlya-blokchejnov-i-nemnogo-o-web3"},"modified":"2020-08-04T01:42:10","modified_gmt":"2020-08-03T23:42:10","slug":"ob-orakulah-dlya-blokchejnov-i-nemnogo-o-web3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/ob-orakulah-dlya-blokchejnov-i-nemnogo-o-web3","title":{"rendered":"Blockchain'i oraklidest ja natuke Web3-st","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Praegu on blockchainid tugevalt eraldatud v\u00e4listest teabeallikatest \u2014 nii tsentraliseeritud ressurssidest kui ka teistest blockchainidest. Erinevate plokkide ahelate koostalitlusv\u00f5ime ja kerge andmevahetus nende vahel (ja v\u00e4listest ressurssidest) on v\u00f5imalik oraklite kaudu. <\/p>\n<p><img decoding=\"async\" alt=\"Blockchain&#039;i oraklidest ja natuke Web3-st\" src=\"\/wp-content\/uploads\/2020\/08\/e543fd7b6bb7af69756880115d0dfbaf.png\" style=\"display:block;margin: 0 auto;\" \/><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Mis on oraklid<\/h3>\n<p>\nOrakel on s\u00fcsteem, mis saab ja valideerib v\u00e4liseid s\u00fcndmusi blockchainist ning edastab need andmed blockchaini nutilepingute kasutamiseks (v\u00f5i vastupidi). Oraklid on nutilepingute jaoks kriitilise t\u00e4htsusega, kuna nutilepingud on rangelt m\u00e4\u00e4ratletud. Teave peab tulema nutilepingusse kindla kanali kaudu, mis suudab kinnitada selle usaldusv\u00e4\u00e4rsust. <\/p>\n<p>On olemas mitmeid oraklite t\u00fc\u00fcpe, mis pakuvad erinevaid \u00fchenduste liike:<\/p>\n<ul>\n<li>tarkvaralised \u2014 hankivad andmeid internetist v\u00f5i teistest blockchainidest;<\/li>\n<li>riistvaralised \u2014 saavad andmeid erinevatelt sensoritelt (<noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/RFID\">RFID<\/a><\/noindex> m\u00e4rgid, nuti kodu, isiklikult tuleb mulle kohe meelde rakendamine logistikas ja IoT);\n<p><i>N\u00e4ide: nutilepingusse tuleb edastada andmed \u00f5hutemperatuuri kohta. Andmeid saab v\u00f5tta internetist l\u00e4bi programmiline orakli v\u00f5i IoT-andurist l\u00e4bi riistvaralise orakli. *IoT \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/trends.rbc.ru\/trends\/industry\/5db96f769a7947561444f118\">Asjade Internet.<\/a><\/noindex><\/i><\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li>sissetulevad \u2014 v\u00e4ljastpoolt plokikahti nutilepingusse;<\/li>\n<li>v\u00e4ljuvad \u2014 nutilepingust mingisse ressurssi;<\/li>\n<\/ul>\n<p>\nM\u00f5nikord kasutatakse konsensusorakleid. Mitmed oraklid saavad andmed iseseisvalt ja seej\u00e4rel m\u00e4\u00e4ravad mingisuguse algoritmi j\u00e4rgi v\u00e4ljundandmed. <\/p>\n<p><i>N\u00e4ide, milleks see vajalik on: 3 oraklit saavad BTC\/USD kursi Binance'ist, BitMex'ist ja Coinbase'ist ning edastavad v\u00e4lja keskmise v\u00e4\u00e4rtuse. Nii tasandatakse v\u00e4ikeseid erinevusi b\u00f6rsidel.<\/i><\/p>\n<h2>Web3<\/h2>\n<p>\nR\u00e4\u00e4kides oraklitest ja nende rakendustest ei saa m\u00f6\u00f6da vaadata Web3-st, kontseptsioonist, mille jaoks need v\u00e4lja m\u00f5eldi. Alguses oli Web3 semantilise veebiga seotud idee, kus iga sait on m\u00e4rgistatud metaandmetega, et parandada suhtlemist otsingumootoritega. Kuid t\u00e4nap\u00e4eva Web3 idee \u2014 on v\u00f5rk, mis koosneb dAppidest. Ja detsentraliseeritud rakendused vajavad orakleid.<\/p>\n<p><img decoding=\"async\" alt=\"Blockchain&#039;i oraklidest ja natuke Web3-st\" src=\"\/wp-content\/uploads\/2020\/08\/9a562a87082126bfe5a1f736a4ffd0ae.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nOraakli loomine iseseisvalt on v\u00f5imalik (ja m\u00f5nel juhul vajalik), kuid on olemas mitmeid sageli kasutatavaid oraakleid (n\u00e4iteks juhuslikkuse generaator), mist\u00f5ttu on kasulik kasutada oraakli projekte. Praegu on kaks peamist projekti, mis arendavad oraakleid \u2014 <noindex><a rel=\"nofollow\" href=\"https:\/\/bandprotocol.com\/\">Band<\/a><\/noindex> ja <noindex><a rel=\"nofollow\" href=\"https:\/\/chain.link\/\">Chainlink<\/a><\/noindex>. <\/p>\n<h2>Band Protocol<\/h2>\n<p>\nBand Protocol t\u00f6\u00f6tab dPoS konsensusalgoritmil (<noindex><a rel=\"nofollow\" href=\"https:\/\/academy.binance.com\/ru\/blockchain\/delegated-proof-of-stake-explained\">mis see on?<\/a><\/noindex>) ning andmete edastajad vastutavad andmete ehtsuse eest rahaga, mitte ainult mainega.<\/p>\n<p>Projekti \u00f6kos\u00fcsteemis on kolm t\u00fc\u00fcpi kasutajaid:<\/p>\n<ul>\n<li>Andmete edastajad, kes t\u00f6\u00f6tavad iseseisvalt, et turvata andmete edastamist plokiahelast plokiahelasse. Tokeni hoidjad panustavad andmete edastajatele, et anda neile \u00f5iguse andmete edastamiseks protokolli.<\/li>\n<li>dApp arendajad, kes maksavad v\u00e4ikseid tasusid oraakli kasutamise eest.<\/li>\n<li>Band tokeni hoidjad, kes h\u00e4\u00e4letavad andmete edastajate poolt. H\u00e4\u00e4letades oma tokenitega edastaja poolt, saavad nad preemiaid dApp-ide poolt makstud rahast.<\/li>\n<\/ul>\n<p>\n<img decoding=\"async\" alt=\"Blockchain&#039;i oraklidest ja natuke Web3-st\" src=\"\/wp-content\/uploads\/2020\/08\/f752795cbac32004e2a76ba7a95d5d0d.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nBand pakub \"karbist v\u00e4ljas\" mitmeid oraakleid: lennukite t\u00f5usude ja laskumiste ajad, ilmaprognoos, kr\u00fcptovaluutade kursid, kullahinnad ja aktsiad, teave bitcoini plokkide kohta, gaasi keskmine hind, kr\u00fcptob\u00f6rside kauplemismaht, juhuslike numbrite generaator, Yahoo Finance, HTTP staatuse kood.<\/p>\n<p>Muide, Band'i investorite seas on legendaarne riskikapitalifond <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sequoiacap.com\/\">Sequoia<\/a><\/noindex> ja <noindex><a rel=\"nofollow\" href=\"https:\/\/www.binance.com\/\">Binance<\/a><\/noindex>. <\/p>\n<h2>Chainlink<\/h2>\n<p>\n\u00dcldiselt on Chainlink ja Band v\u00e4ga sarnased - nii vaikimisi lahendustes kui ka arendamise v\u00f5imalustes. Chainlink on lihtsam kasutada, kuna seal pole teabe pakkujate h\u00e4\u00e4letust, aga Band on paindlikum, kuna kasutab <noindex><a rel=\"nofollow\" href=\"https:\/\/cosmos.network\/sdk\">Cosmos SDK<\/a><\/noindex> ja on 100% avatud l\u00e4htekoodiga. <\/p>\n<p>Praegu on Chainlink oluliselt populaarsem, projektu partnerite hulgas on Google Cloud, Binance, Matic Network ja Polkadot. Samuti on Chainlink keskendunud oraaklitele valdkonnas <noindex><a rel=\"nofollow\" href=\"https:\/\/forklog.com\/chto-takoe-detsentralizovannye-finansy-defi\/\">DeFi<\/a><\/noindex>, mis praegu kiiresti kasvab.<\/p>\n<p><img decoding=\"async\" alt=\"Blockchain&#039;i oraklidest ja natuke Web3-st\" src=\"\/wp-content\/uploads\/2020\/08\/ac663742aba41c9263c1453affc70e82.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Allikad, mille andmeid saab Chainlinki oraakli kaudu k\u00e4tte.<br \/>\n<\/i><\/p>\n<h3>Kokkuv\u00f5te<\/h3>\n<p>\nOraaklid on suurep\u00e4rane idee andmete saamiseks tsentraliseeritud allikatest plokiahelas ning ma j\u00e4lgin t\u00e4helepanelikult selle arengut. Kuid kui r\u00e4\u00e4kida erinevate plokiahelate vastastikusest \u00fchilduvusest, siis on olemas ka teisi lahendusi, sealhulgas parahahelad (veelgi paljut\u00f5otavam tehnoloogia ja minu j\u00e4rgmise postituse teema). <\/p>\n<p>Neile, kes soovivad s\u00fcgavamale minna: <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.bandchain.org\/\">Band Docs<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.chain.link\/docs\/getting-started\">Chainlink Docs<\/a><\/noindex>.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/513000\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0434\u0430\u043d\u043d\u044b\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d\u044b \u0441\u0438\u043b\u044c\u043d\u043e \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b \u043e\u0442 \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u0432 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u2014 \u043a\u0430\u043a \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432, \u0442\u0430\u043a \u0438 \u0434\u0440\u0443\u0433\u0438\u0445 \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d\u043e\u0432. \u0427\u0442\u043e\u0431\u044b \u0440\u0430\u0437\u043d\u044b\u0435 \u0446\u0435\u043f\u043e\u0447\u043a\u0438 \u0431\u043b\u043e\u043a\u043e\u0432 \u0431\u044b\u043b\u0438 \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u044b \u0438 \u043b\u0435\u0433\u043a\u043e \u043e\u0431\u043c\u0435\u043d\u0438\u0432\u0430\u043b\u0438\u0441\u044c \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u043c\u0435\u0436\u0434\u0443 \u0441\u043e\u0431\u043e\u0439 (\u0438 \u0441 \u0432\u043d\u0435\u0448\u043d\u0438\u043c\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438) \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043e\u0440\u0430\u043a\u0443\u043b\u043e\u0432. \u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u043e\u0440\u0430\u043a\u0443\u043b\u044b \u041e\u0440\u0430\u043a\u0443\u043b \u2014 \u044d\u0442\u043e \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u0442 \u0438 \u0432\u0435\u0440\u0438\u0444\u0438\u0446\u0438\u0440\u0443\u0435\u0442 \u0441\u043e\u0431\u044b\u0442\u0438\u044f \u0438\u0437\u0432\u043d\u0435 \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d\u0430 \u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0435\u0442 \u044d\u0442\u0438 \u0434\u0430\u043d\u043d\u044b\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":90632,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-90631","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\" content=\"\u0412 \u0434\u0430\u043d\u043d\u044b\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 \u0431\u043b\u043e\u043a\u0447\u0435\u0439\u043d\u044b \u0441\u0438\u043b\u044c\u043d\u043e \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b \u043e\u0442 \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u0432 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u2014 \u043a\u0430\u043a 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