QUICK INFO:

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• Important: this is not the safest way to make a transaction: private keys and seed are exposed to the Internet. It should be avoided for big wallets and in any case it is vital to do it in a secure computer and using Tails (or a hardware wallet)

• [2/3] Setup:

  • Wallet A: "Send" > paste destination address, amount > "Pay" > "Advanced" > choose fee/priority > "Finalize" > "Sign" > write/paste password of Electrum wallet > "Ok" > check that status changed from "Unsigned" to "Partially signed [1/2]" > "Export" > "Export to file" > choose directory for ".psbt" file > "Save" > send (in encrypted format) the ".psbt" transaction to the owner of Wallet B.

  • Wallet B: "Tools" > "Load transaction" > "From file" > check transaction and status > "Sign" > write/paste password of Electrum wallet > "Ok" > check that status changed from "Partially signed [1/2]" to "Signed" > "Broadcast".