I-Blockchain oracles ixazulula inkinga yokuletha ulwazi oluvela ngaphandle kwe-blockchain. Kodwa kubalulekile ngathi ukwazi ukuthi yibaphi esingabathemba.
Π mayelana nokwethulwa kwekhathalogi sabhala ngokubaluleka kwama-oracle for blockchain.
Izinhlelo zokusebenza ezimisiwe azikwazi ukufinyelela idatha ngaphandle kwe-blockchain. Ngakho-ke, kwakhiwa izinhlelo ezincane - izibikezelo - ezithola ukufinyelela kwedatha edingekayo evela emhlabeni wangaphandle futhi zirekhode ku-blockchain.
Ngokusekelwe ohlotsheni lomthombo wedatha, ama-oracle angahlukaniswa abe izigaba ezintathu: isofthiwe, ihadiwe kanye nabantu.
Izimpawu zesoftware thola futhi ucubungule idatha evela ku-inthanethi - efana nezinga lokushisa lomoya, izintengo zempahla, ukubambezeleka kwesitimela nendiza. Ulwazi luvela emithonjeni eku-inthanethi njengama-API, futhi i-oracle iyayikhipha bese iyibeka ku-blockchain. Funda mayelana nendlela yokwenza i-oracle yesofthiwe elula .
Hardware oracles ukulandelela izinto emhlabeni wangempela usebenzisa amadivaysi nezinzwa. Isibonelo, ikhamera yevidiyo eklanyelwe ukweqa umugqa irekhoda izimoto ezingena endaweni ethile. I-oracle irekhoda iqiniso lokweqa umugqa ku-blockchain, futhi ngokusekelwe kule datha, iskripthi sohlelo lokusebenza esimisiwe singakwazi, isibonelo, ukuqalisa ukukhishwa kwenhlawulo kanye nokudonswa kwamathokheni ku-akhawunti yomnikazi wemoto.
Izibikezelo Zomuntu sebenzisa idatha efakwe abantu. Bathathwa njengabanenqubekela phambili kakhulu ngenxa yombono wabo ozimele ngomphumela womcimbi.
Sisanda kunikeza ithuluzi elivumela idatha ye-oracle ukuthi ibhalwe ku-blockchain ngokusho kwencazelo enikeziwe. Isebenza kalula kakhulu: udinga nje ukubhalisa ngokugcwalisa imininingwane. Ukuthengiselana kwedatha kungabe sekushicilelwa ngokwalokhu kucaciswa kusetshenziswa i-Waves Oracles interface. Funda kabanzi mayelana nethuluzi ku .
Amathuluzi anjalo amisiwe kanye nokuxhumana kwenza ukuphila kube lula kubo bobabili abathuthukisi nabasebenzisi bezinsizakalo ze-blockchain. Ithuluzi lethu liwusizo ikakhulukazi ekukhulumeni kwabantu futhi lingasetshenziswa, isibonelo, ukurekhoda izitifiketi noma amalungelo okushicilela anoma yiziphi izinto.
Kodwa lapho usebenzisa izibikezelo, umbuzo wokuthembela olwazini olutholwa kuzo uyaphakama. Ingabe umthombo uthembekile? Ingabe idatha izotholwa ngesikhathi? Ngaphezu kwalokho, kunengozi yokuthi i-oracle izokhohlisa abasebenzisi ngokuhlinzeka ngamabomu ulwazi olungalungile ukuze kuzuze lona.
Njengesibonelo, cabangela i-oracle ehlinzeka ngolwazi mayelana nemicimbi yezemidlalo yokushintshisana kokubheja okunesizinda.
Umcimbi uyimpi enkulu yomqhudelwano we-UFC 242, uKhabib Nurmagomedov vs. Dustin Poirier. Ngokusho kwababhuki, uNurmagomedov uyintandokazi ecacile yokulwa. Ungabheja ekunqobeni kwakhe ngezingqinamba ezingu-1,24, okulingana namathuba angu-76%. Amathuba okunqoba kuka-Poirier abe ngu-4,26 (22%), kanti amathuba okuthi atolekwe alinganiselwe ngobhuki abe ngu-51,0 (2%).
Umbhalo wamukela ukubheja komsebenzisi kuyo yomithathu imiphumela engaba khona kuze kube yilapho uthola ulwazi ku-oracle mayelana nomphumela wangempela wempi. Lona ukuphela kombandela wokusatshalaliswa kokuwinile.
Manje sekuyaziwa ukuthi uNurmagomedov uwinile. Kodwa-ke, ake sicabange ukuthi umnikazi ongathembekile we-oracle, ehlela inkohliso kusengaphambili, wabeka ukubheja ngomphumela ngezingqinamba ezinhle kakhulu - ukudweba. Lapho ibhange lokubheja selifinyelele umthamo omkhulu, umnikazi we-oracle uqala ukuqopha imininingwane engamanga ku-blockchain mayelana nomphumela okuthiwa udonswe empini. Iskripthi sokushintshisana esihlukaniselwe izwe alinawo amandla okuhlola kabili ukunemba kwedatha etholiwe futhi sisabalalisa kuphela okuwinile ngokuvumelana nale datha.
Uma inzuzo engaba khona evela kulolu hlobo lwenkohliso iphakeme kunemali engenayo ecatshangelwayo ye-oracle ethembekile, futhi ingozi yokuya enkantolo iphansi, amathuba ezenzo zokungathembeki zomnikazi we-oracle akhula kakhulu.
Isixazululo esisodwa senkinga ukucela idatha kuma-oracle amaningana futhi ulethe amanani angumphumela ekuvumelaneni. Kunezinhlobo eziningana zokuvumelana:
- zonke izibikezelo zinikeza ulwazi olufanayo
- izibikezelo eziningi zinikeze ulwazi olufanayo (2 koku-3, 3 koku-4, njll.)
- ukuletha idatha ye-oracle kunani elimaphakathi (izinketho zingenzeka lapho amanani aphezulu kanye nobuncane alahlwayo kuqala)
- wonke ama-oracle anikeze ulwazi olufanayo ngokubekezelelana okuvunyelwene ngaphambilini (isibonelo, izingcaphuno zezimali ezivela emithonjeni ehlukene zingase zehluke ngo-0,00001, futhi ukuthola okufanayo ngqo kuwumsebenzi ongenakwenzeka)
- khetha amanani ahlukile kuphela kudatha etholiwe
Masibuyele ekushintshanisweni kwethu kokubheja okuhlukaniselwe izwe. Uma usebenzisa ukuvumelana kokuthi "3 kokungu-4", i-oracle eyodwa ebika umdwebo ngeke ikwazi ukuba nomthelela ekusebenzeni kombhalo, inqobo nje uma amanye ama-oracle amathathu ehlinzeka ngolwazi oluthembekile.
Kodwa umsebenzisi ongathembekile angaba nezintathu kwezine, futhi uzokwazi ukunikeza iningi eliwujuqu.
Ukulwela ubuqotho bamazwi, ungakwazi ukwethula isilinganiso sawo noma isistimu yenhlawulo yedatha engathembekile. Ungakwazi futhi ukuthatha umzila "wekherothi" futhi unikeze umklomelo wobuqiniso. Kodwa azikho izinyathelo ezizogwema ngokuphelele, isibonelo, ukulinganisa ukwehla kwamandla emali noma iningi elingafanele.
Ngakho-ke kufanelekile ukusungula izinsizakalo eziyinkimbinkimbi, noma ingabe kuzokwanela ukuba nethuluzi lokuvumelana elizokuvumela, njengaseshalofini lesitolo esikhulu, ukuthi ukhethe, ngokwesibonelo, izibikezelo ezinhlanu ezihlinzeka ngedatha edingekayo, usethe uhlobo lokuvumelana futhi uthole. Umphumela?
Isibonelo, uhlelo lokusebenza oluhlukaniselwe indawo ludinga idatha yezinga lokushisa ngamadigri Celsius. Kukhathalogi ye-oracle, sithola ama-oracle amane ahlinzeka ngedatha enjalo, setha uhlobo lokuvumelana ukuze lube "isilinganiso" futhi wenze isicelo.
Ake sithi ama-oracle anikeze amanani alandelayo: 18, 17, 19 kanye nama-21 degrees. Umehluko wamadigri amathathu ungaba bucayi kakhulu ekusebenzeni kweskripthi. Isevisi icubungula umphumela futhi ithola izinga lokushisa eliphakathi kuka-18.75 degrees. Iskripthi sohlelo lokusebenza esihlukaniselwe indawo sizothola le nombolo futhi sisebenze nayo.
Ekugcineni, isinqumo silele kumthengi: ukuthi athembe i-oracle eyodwa futhi asebenzise idatha yayo, noma akhe ukuvumelana kwama-oracle ambalwa akhethwe ngokubona kwawo.
Kunoma yikuphi, izibikezelo zedatha ziyinkambu entsha. Kusesigabeni lapho abasebenzisi ngokwabo benganquma ukuthi kufanele ithuthuke ngakuphi. Yingakho sifuna ukuzwa umbono wakho. Ingabe ithuluzi elingenhla liyadingeka kuma-oracle? Ulibona kanjani ikusasa lama-oracle edatha ngokuvamile? Yabelana ngombono wakho kumazwana naseqenjini lethu elisemthethweni ku .
Source: www.habr.com