Is there any way I can call an external API or a smart contract on other EOS sister chains or other blockchains from within an EOS smart contract.

Or maybe some decentralised service that will monitor an EOS contract and then push a transaction to another chain?

Does EOS have state proofs?

  • that's an oracle
    – Jimmy Guo
    Jul 11, 2019 at 9:00
  • Can I write an Oracle into the contract, or is an Oracle a third party I need to connect with?
    – Bill
    Jul 11, 2019 at 9:52
  • it's difficult, there's no real oracle, only on chain things that are definite, oracle move data from off chain to on chain
    – Jimmy Guo
    Jul 12, 2019 at 7:53


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