When depositing or withdrawing funds from NiceHash, users need to provide Travel Rule information. More about the Travel Rule can be found here.
When adding a new withdrawal address user has 3 options:
Use your Travel Address from a platform that you are withdrawing the balance to. If the platform does not support the Travel Rule and/or Travel Address, use option 2.

If you haven’t received the Travel Address, simply select the platform you are depositing to from the dropdown menu and input the recipient’s name and last name.
If the platform is not listed in the dropdown menu, please write to support@nicehash.com.

If you use a self-custodial wallet you should provide a Wallet Signature Proof or Visual Proof.

Once you input the Bitcoin Withdrawal Address and Name, click on WALLET SIGNATURE PROOF button to open a new browser window and follow the instructions.

Visual Proof can be uploaded to NiceHash by clicking the VISUAL PROOF button. Proceed to upload the selfie with the previously inputted WITHDRAWAL address written on the piece of paper.
Keep in mind that visual proofs are manually reviewed and might take longer to confirm it.

When depositing to NiceHash, you can also use the Travel Address generated by NiceHash for you. Use this Travel Address on 3rd party platforms like Kraken, Bitstamp, or other platforms that support Travel Rule with use of Travel Address.
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If your deposit is stuck or withheld, you can resolve it by providing necessary information. Navigate to your Wallet tab -> Bitcoin and click on the pending transaction.
You have two options to provide necessary information:
VASP stands for Virtual Asset Service Provider. Select the platform from where you made the deposit from the dropdown menu and input the recipient’s name and last name.
If the platform is not listed in the dropdown menu, please write to support@nicehash.com.
If you have sent the transaction from a self-custodial wallet you should provide a Wallet Signature Proof or Visual Proof. The process is identical to Option 3 in Adding a new withdrawal address section.