A halin yanzu, blockchain sun keɓe sosai daga tushen bayanai na waje - duka albarkatun ƙasa da sauran blockchain. Don tabbatar da cewa blockchain daban-daban sun dace kuma a sauƙaƙe musayar bayanai a tsakanin juna (kuma tare da albarkatun waje), ana iya amfani da oracles.
Menene baka
Oracle wani tsari ne wanda ke karba da kuma tabbatar da abubuwan da suka faru daga wajen blockchain kuma yana watsa wannan bayanan zuwa blockchain don amfani da kwangiloli masu wayo (ko akasin haka). Oracles suna da mahimmanci ga kwangiloli masu wayo saboda kwangiloli masu wayo suna da ƙayyadaddun ƙayyadaddun ƙayyadaddun bayanai. Dole ne bayanai su shiga kwangilar wayo ta hanyar takamaiman tashar da za ta iya tabbatar da daidaito.
Akwai nau'ikan maganganu da yawa waɗanda ke ba da nau'in sadarwa ɗaya ko wata:
- software - karɓar bayanai daga Intanet ko daga wasu blockchain;
- hardware - karɓar bayanai daga na'urori daban-daban ( tags, gida mai kaifin baki; da kaina, aikace-aikace a cikin dabaru da IoT nan da nan suka zo hankali);
Misali: bayanan zafin iska yana buƙatar canjawa wuri zuwa kwangila mai wayo. Kuna iya ɗaukar bayanai daga Intanet ta hanyar oracle na software, ko daga na'urar firikwensin IoT ta hanyar oracle hardware. *IoT
- mai shigowa - daga waje da blockchain cikin kwangila mai kaifin baki;
- mai fita - daga kwangila mai wayo zuwa wasu albarkatu;
A wasu lokuta ana amfani da maganganun ijma'i. Oracle da yawa suna karɓar bayanai da kansu, sannan suna amfani da wasu algorithm don tantance fitarwa.
Misalin dalilin da yasa ake buƙatar wannan: 3 oracles suna karɓar ƙimar BTC / USD daga Binance, BitMex da Coinbase, kuma suna watsa matsakaicin ƙimar azaman fitarwa. Wannan yana kawar da ƙananan bambance-bambance tsakanin musayar.
Web3
Lokacin magana game da baka da aiwatar da su, ba za a iya watsi da Web3 ba, manufar da aka ƙirƙira su. Web3 asalin ra'ayi ne na gidan yanar gizo na ma'ana, inda kowane rukunin yanar gizon aka yiwa alama da metadata don haɓaka hulɗa tare da injunan bincike. Koyaya, ra'ayin zamani na Web3 shine hanyar sadarwar da ta ƙunshi dApps. Kuma aikace-aikace masu rarraba suna buƙatar baka.
Yana yiwuwa (kuma, a wasu lokuta, ya zama dole) don ƙirƙirar oracle da kanku, amma akwai wasu kalmomin da aka saba amfani da su (misali, janareta na lamba bazuwar), don haka yana da tsada don amfani da ayyukan baka. Manyan ayyuka guda biyu (a halin yanzu) masu haɓaka baka sune: и .
Toaurawar Band
Band Protocol yana gudana akan dPoS yarjejeniya algorithm () kuma masu samar da bayanai suna da alhakin sahihancin kuɗi tare da kuɗi, ba kawai suna ba.
Akwai nau'ikan masu amfani guda uku a cikin yanayin yanayin aikin:
- Masu ba da bayanai waɗanda ke aiki da kansu don canja wurin bayanai amintacce daga wajen blockchain zuwa blockchain. Masu riƙe da Token sun yi fare kan masu samar da bayanai don ba su 'yancin ƙaddamar da bayanai zuwa ƙa'idar.
- Masu haɓaka DApp waɗanda ke biyan kuɗi kaɗan don amfani da oracle.
- Masu riƙon bandeji waɗanda ke zaɓe don masu samar da bayanai. Ta hanyar jefa ƙuri'a tare da alamun su ga mai bayarwa, suna samun lada daga kuɗin da dApps suka biya.
Daga cikin zantukan da Band ke bayarwa daga cikin akwatin: lokacin tashi / saukowa jirgin sama, taswirar yanayi, ƙimar cryptocurrency, zinariya da ƙimar hannun jari, bayani game da tubalan Bitcoin, matsakaicin farashin gas, ƙididdigewa akan musayar crypto, janareta lambar bazuwar, Yahoo Finance, HTTP Lambar Matsayi .
Af, a cikin masu zuba jari na Band shine asusun kasuwanci na almara и .
Chainlink
Gabaɗaya, Chainlink da Band suna kama da juna - duka a cikin hanyoyin da aka saba da kuma a cikin damar haɓakawa. Chainlink ya fi sauƙi don amfani, babu zaɓe don masu samar da bayanai, kuma Band ya fi sauƙi saboda yana amfani kuma shine 100% bude tushen.
A halin yanzu, Chainlink ya fi shahara, tare da Google Cloud, Binance, Matic Network da Polkadot akan jerin abokan aikin. Chainlink kuma ya mayar da hankali kan oracles don yanki , wanda a yanzu yana girma cikin sauri.
Abubuwan da za a iya samun bayanan su ta hanyar magana daga Chainlink.
ƙarshe
Oracle kyakkyawan ra'ayi ne don samun bayanai daga albarkatun da aka keɓe akan blockchain, kuma zan sa ido kan ci gabansa. Duk da haka, idan muka yi magana game da daidaituwar juna na blockchain daban-daban, akwai wasu mafita, ciki har da parachains (wani fasaha mai ban sha'awa da kuma batun matsayi na gaba).
Ga masu son zurfafa zurfafa: , .
source: www.habr.com