Transfer from Custodial Wallets (Web3 Wallets)

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Prerequisite

• It’s recommended that you set up a token transfer policy.
• You have deposited funds into the Web3 Wallets.

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Steps

1. Log in to Cobo Portal.
2. To open the Transfer dialog, click in the main menu of Cobo Portal. Alternatively, click on your Web3 Wallet page, the corresponding token or address will be preselected for you.
3. Select Custodial Wallets > Web3 Wallets as the source wallet. For the wallet address, select from the drop-down menu or search by wallet name, address, or label. Web3 Wallets created via both Cobo Portal and WaaS 2.0 API will be listed.
4. Select the token type and network for the transfer. To enable a new token type, navigate to your Web3 Wallet page and click Add Tokens.
5. Select a recipient address from your Address Book or your wallets on Cobo Portal, or manually enter an address.
   • Address Book: Only addresses associated with the blockchain network of the selected token will be listed.
   • My Wallets: Select a wallet type and then click on the specific wallet you would like to transfer to.
6. Enter the transfer amount.
7. Review the transaction cost. The fee will be deducted from the source wallet that you selected in step 3. Please ensure that the source wallet has the required token enabled and sufficient balance for the fee payment. Alternatively, you can enable Fee Station for transaction fee payment. Network fees will be displayed in 3 tiers based on transaction speeds: slow, standard, and fast. To adjust the fees, click the button highlighted below. All fields are mandatory and will be auto-populated based on the transaction speed you have selected. You may edit the parameters based on your specific requirements.
   • EVM chains: For EVM chains, transaction fees vary between the EIP1559 and Legacy methods.
     • EIP 1559
       • Under the EIP1559 method, users can customize 3 parameters: max priority fee (gwei), max fee, and gas limit.
       • The estimated fee is calculated by multiplying the max fee by the gas limit: (max fee * gas limit).
       • Currently supported chains are Ethereum Mainnet (ETH), Sepolia Testnet (SETH), and Scroll Mainnet (SCROLL_ETH)

       Parameter	Definition
       Max priority fee	The priority fee, often referred to as the ‘miner tip,’ serves as an incentive for miners to prioritize your transaction. The max priority fee represents the highest amount of miner tips you are willing to pay for your transaction.
       Max fee	The max fee represents the total gas price you are willing to pay for your transaction.
       Gas limit	The gas limit represents the max number of gas units you are willing to pay for the execution of a transaction or Ethereum Virtual Machine (EVM) operation. Different operations require varying quantities of gas units.

     • Legacy
       • Under the Legacy method, users can customize 2 parameters: gas price (gwei) and gas limit.
       • The estimated fee is calculated by multiplying the gas price by the gas limit: (gas price * gas limit).

       Parameter	Definition
       Gas price	The gas price represents the amount of ETH (in a smaller unit known as gwei) that must be paid to validators for processing transactions.
       Gas limit	The gas limit represents the max number of gas units you are willing to pay for the execution of a transaction or Ethereum Virtual Machine (EVM) operation.

   • UTXO-based chains
     • Users can customize the fee rate (sat/vByte).
     • The estimated fee is calculated by multiplying the fee rate by the transaction size: (fee rate * transaction size).

       Parameter	Definition
       Fee rate	The fee rate is calculated in satoshis per unit of data that your transaction will consume on the blockchain, abbreviated as sats/vByte.

   • Solana chain
     • Users can customize 2 parameters: compute unit (CU) price and CU limit.
     • The estimated fee is calculated as: base fee + (CU price * CU limit).

       Parameter	Definition
       Compute unit price	The fee paid per compute unit to prioritize a transaction. It is specified in lamports.
       Compute unit limit	The maximum number of compute units the transaction is allowed to consume. A higher value may increase priority but results in higher fees.

     If you want to use the legacy fee model, please call the API operation and specify the model explicitly.
   • Filecoin chain
     • Users can customize 3 parameters: gas fee cap, gas premium, and gas limit.
     • The estimated fee is calculated as: min(gas fee cap, base fee + gas premium) * gas limit.

       Parameter	Definition
       Gas fee cap	The maximum fee per gas unit you are willing to pay. The final effective fee per unit is capped at this value.
       Gas premium	A tip paid to incentivize block producers to prioritize your transaction.
       Gas limit	The maximum gas amount the transaction is allowed to consume.

     If you want to use the legacy fee model, please call the API operation and specify the model explicitly.
8. (Optional) Add a transaction category and description to identify this transfer more easily.
   • For Category, either create a new category or select from existing ones. Each transfer can be associated with a maximum of 5 categories. Note that once a category is added, it cannot be edited or deleted. Currently, Cobo Portal allows the creation of up to 200 categories.
     • To view the categories under your organization, click the profile icon in the bottom left corner, then select Organization > Transaction Categories.
   • For Description, add a description with a maximum limit of 100 characters.
9. Click Submit.
10. Approve the request on your Cobo Guard. If it is a new address not found in your Address Book or any of your wallets created on Cobo Portal, you will be prompted to add the address to your Address Book.

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Next steps