Ověření adresy

ADDRESS CONTROL VERIFICATION

In the framework of applicable regulatory requirements, Dukascopy is required to ensure a proper verification of client's control (also referred to as power of disposal) over the blockchain addresses used by clients in their crypto transactions with the Bank.

A set of verification methods listed below can be used at different steps of clients' interaction with blockchain operations with the Bank.

1. MESSAGE SIGNING

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

Clients willing to get access to blockchain operations with Dukascopy are required to declare their blockchain address to the Bank and prove their control (power of disposal) over the declared address by successfully passing the Message signing procedure. This is a compulsory step to get access, among other, to such services as Account Funding In Crypto, investment delivery to blockchain in MCA accounts and blockchain operations with Dukascoins.

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. The successful verification of the resulting signature represents a technical proof the client's control over the declared address.

Limited validity

The successful verification of a blockchain address declared by a client is valid for 3 months. In order to maintain access to blockchain operations with Dukascopy, this procedure should be repeated every three months.

An account whose declared blockchain address's validity period has expired automatically loses access to blockchain operations with the Bank until a successful re-verification of the registered address through the Message signing method is passed.

In addition to that, clients will be requested to pass a repeated verification of the declared address with Message signing method every time they intend to initiate a deposit or a withdrawal exceeding a certain threshold.

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. 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 are the paths to be followed to Sign Message with an ETH address using the popular mycrypto.com and myetherwallet.com (MEW) services.

      1. Open the “Sign Message” 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 adress that was declared in Dukascopy account.

      2. Copy and paste the message (in this example “1053579”) 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.

      1. Open the “Access my wallet” 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 adress that was declared in Dukascopy account.

      2. Once connected to your crypto wallet, find the “Message” section in the left menu and select “Sign Message”. Copy and paste the message (in this example “1053579”) that is provided to you in the withdrawal address declaration form of Dukascopy interface into the message area.
        Then click the “Sign” 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. Confirm the operation by clicking the “Confirm Signing” button in MEW form.

      5. The resulting signature will appear on the MEW form.

      6. Copy and paste this signature to the withdrawal address declaration form of Dukascopy interface.

        Click the “Verify” button.

      7. 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 BTC withdrawal address has been successfully registered.

2. MICRO-TRANSACTION

The micro-transaction verification method consists in requesting the client to send a predefined small fraction of a specific crypto-currency to the indicated blockchain address. The exact amount of the micro-transaction is unique for every verification case an is communicated to the client via the secure area of the client cabinet (or the app).

This verification method is likely to be applied in case of crypto deposits made from blockchain addresses other than the one declared by the client to Dukascopy (i.e. from the registered blockchain address over which the client has already proved to have control by by passing through the Message signing procedure). In such cases, the micro-transaction is combined with the deposit amount announced by the client.

Always make sure to send exactly the resulting amount requested (i.e. the deposit amount announced + the micro-transaction part). Any mismatch will trigger a scrutiny procedure and may end up with the deposit placed in quarantine

3. SCREENSHOT(S)

In certain cases Dukascopy may ask clients to provide screenshot(s) as an alternative method for verifying client's control (power of disposal) over the source blockchain address used for the crypto deposit made.

When this method is applied, the screenshot(s) must necessarily contain personal information of the wallet holder (e.g. name/surname, email, address) and at least two of the following elements:

  • The amount and time of the transaction.
  • The wallet address to which the crypto funds were sent.
  • The wallet address from which the crypto funds were sent.
  • The blockchain transaction ID.

Refer to Account Funding In Crypto for more details.

Získejte další informace o všech krypto službách poskytovaných bankou.

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