blockchain - How can I include real world data in a smart contract? -


lets want write simple contract bet on weather 10 days now, or outcome of sporting event.

how connect third party application hosts data , use write smart contract?

what looking oracle.

ethereum , other blockchains unable access data outside of network(the way think imagine if entire ethereum network tried access weather api mentioned @ same time...) oracles come in. oracles third party services designed use smart contracts provide , push external data chain including weather example.

there many different ways set , different services can use own oracle

i included link gnosis' white paper can see how handle oracles. https://gnosis.pm/ , included link further general explanation on oracles https://blockchainhub.net/blockchain-oracles/


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