I'm working on an exchange where every user has given a unique address, generated via ethereum hd wallets. How can i use a single master private key to transfer available funds from different generated addresses like we do with bitcoin wallets where we can select multiple addresses with different balances in a single transaction?

  • Check out my answer about doing the same thing with Token contracts Apr 23 '19 at 6:30
  • Ethereum transactions have a single sender, you cannot gather several "inputs" like in Bitcoin.
    – Ismael
    Apr 23 '19 at 16:14

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