1

I need my smart contract to access data from some source. I want to build a smart Oracle in order to achieve this.

Arrow
  • 11
  • 1
  • This may help to build your own oracle https://ethereum.stackexchange.com/questions/11589/how-do-oracle-services-work-under-the-hood – Ismael Aug 22 '17 at 00:02

1 Answers1

2

I think what you meant by "some source" is calling external APIs, like in order to query a database on the Internet.

Due to the deterministic nature of the EVM you need a service like Oracalize.

The Answers to following questions might help you as well : how can ethereum contract get data from a website, Why can't contracts make API calls

lungj
  • 6,680
  • 2
  • 17
  • 45
Achala Dissanayake
  • 5,819
  • 15
  • 28
  • 38