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Are there any other providers for calling external APIs in Solidity other than Oraclize?

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A couple that I can think of:

  • Chainlink - A decentralised oracle network. Queries are paid for in LINK tokens.
  • Realitio (which I think is what used to be Reality Keys). I haven't used it, so won't comment on how it works. Documentation is here.

Other people may know of other services.

  • Thanks for the answer. What is the best service of these three in your opinion, regarding costs and speed? – gorpen Apr 13 at 14:48

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