Message signing

What is Message Signing?

Message signing is a blockchain functionality used to prove that an individual controls a particular blockchain address.

Using this feature is a compulsory step required by Dukascopy from clients wishing to get access to blockchain operations with Dukascopy. This includes withdrawals/deposits of Dukascoins from the blockchain, BTC funding of a trading account.

Whenever a client is declaring his/her blockchain crypto-wallet address (ETH or BTC) that will be used for crypto transfers made from client's account with Dukascopy, he/she should sign a unique message provided by Dukascopy with the private key of the declared wallet. This security measure proves the client's ownership over the declared address.

Client's blockchain withdrawal address can be registered only if it has successfully passed the Message Signing procedure.

  • Message Signing functionality is supported by many popular ETH wallets and public blockchain resources (e.g. mycrypto.com, myetherwallet.com). Clients passing through the message signing procedure during the withdrawal address declaration are encouraged to check if this functionality is supported by their crypto-wallet solution provider.

    As an example, below is the path to be followed to Sign Message with an ETH address using the mycrypto.com service.

    1. Open webpage with your desktop browser and choose the way to access your wallet (in this example connection is made via MetaMask browser extension, however, you can choose a method most suitable for you).

      Make sure that you choose the same address that was declared in Dukascopy account.

    2. Copy and paste the message (in this example "1055407") that is provided to you in the withdrawal address declaration form of Dukascopy interface into the message area.
      Then click the "Sign Message" button.

    3. The signature request with the message to be signed will pop-up in the MetaMask browser extension asking for your confirmation to sign it with your wallet's private key.
      Click the "Sign" button.

    4. The resulting signature will appear on the mycrypto.com page.

    5. Copy and paste this signature to the withdrawal address declaration form of Dukascopy interface.
      Click the "Verify" button.

    6. If the signature is correct, you will see a confirmation that your declared ETH withdrawal address has been successfully registered.

  • Message Signing functionality is built-in certain popular BTC wallets. Clients passing through the message signing procedure during the withdrawal address declaration are encouraged to check if this feature is supported by their crypto-wallet solution provider.

    Alternatively, you may use other public blockchain resources providing this feature.

    As an example, below is the path to be followed to Sign Message with a BTC address using the blockchain.com wallet.

    1. Login/Sign Up to the blockchain.com wallet and go to "Wallets & Accounts" section under "Settings" menu.

    2. Select the "Import Bitcoin Address" option

    3. Choose "Existing address generated outside this wallet". Enter the private key and fill the optional fields (if you want).

      You will need a private key of your wallet for this operation. Be extremely careful not to compromise it and not to disclose to any third parties. Check directly with your blockchain wallet solution provider on how to obtain your private key.

    4. After the address has been imported, go to "More Options" → "Sign Message"

    5. Copy and paste the message that is provided to you in the withdrawal address declaration form of Dukascopy interface into the message area.
      Then click the "Sign" button

    6. Copy and paste the resulting signature to the withdrawal address declaration form of Dukascopy interface.
      Click the "Verify" button.
      If the signature is correct, you will see a confirmation that your declared ETH withdrawal address has been successfully registered.

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