> For the complete documentation index, see [llms.txt](https://docs.cronos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cronos.com/for-users/bridge/bridge-faqs.md). # Bridge FAQs ### FAQs for Bridge transfers #### What are the fees involved? * The Cronos Bridge service itself is free and does not charge any additional service fees. The fees displayed are network gas fees which the blockchain infrastructure charges itself to process the transactions and vary depending on the network. * For any bridge transaction, network gas fees are incurred on two chains: origin and destination. * For the origin chain gas fee, this will be displayed and settled directly on your wallet extension. * For the destination chain gas fee (“Bridge network fee”), our decentralised bridge is tasked to collect the appropriate gas fee and pay the network. #### How does the Cronos Bridge network fee waiver work? * The following transactions are eligible for a fee waiver: * Cronos POS Chain => Cronos (Cronos EVM chain) * Cronos (Cronos EVM chain) => Cronos POS Chain * The fee waived is the bridge network transaction fee on the destination chain. However, you are still liable to pay for the origin chain gas fee directly on your wallet extension. * This is a promotional waiver; we reserve the right to modify and terminate the promotion at any time #### How fast is the transfer? IBC Transfers will take between 1 min to 1 hour, depending on transfer congestion. After an hour, the transaction will either go through or revert with the funds sent back to your origin wallet. #### Can I transfer assets to a different wallet than my own? * For transfers between Cronos and Cronos POS Chain, we support either connecting a second compatible wallet or inputting the wallet address string. * If possible, we recommend connecting the second wallet to avoid manual typing and potential malware risks such as clipboard attacks. #### What are the support blockchains and tokens? The networks supported are: * Cronos (Cronos EVM Chain) * Cronos POS Chain * [Cosmos](https://hub.cosmos.network/) * [Akash](https://akash.network/) * [IRISnet](https://www.irisnet.org/) * [Canto](https://www.canto.io/) * [Celestia](https://celestia.org/) * [Juno](https://www.junonetwork.io/) #### What are the supported wallets? * The initially supported wallets will be Crypto.com Onchain Wallet, MetaMask, Rabby and Keplr. * Please ensure to set the correct active network on your Wallet if it is supported. #### Can I complete multiple transfers in one go? While it is possible to have multiple ongoing transactions, we recommend having one transaction at a time, even if there is some waiting time to avoid issues and duplication. #### Where can I report bugs and provide product feedback? For any bug reports, or feedback please contact . This is for the web Cronos bridge only. For Crypto.com app, exchange, and Onchain wallet, refer to or . #### How do I find my missing funds? Please check the transaction history table for your past transactions. If your transactions are not on the list, it was likely not initiated at all. If you believe you still have missing funds, please contact [.](mailto:product@cronos.com.) #### Is transferring tokens across blockchains safe? * As with any decentralised application, there is a degree of risk related to code exploits and hacking. * Our bridge code is publicly available. We leverage open-source code from the IBC protocol project. #### How to check a IBC transfer? IBC transfers do not appear in Cronos Explorer because they are processed at the Cosmos layer and do not emit EVM-compatible logs, making them invisible to standard Ethereum JSON-RPC APIs. To look up an IBC transfer, use the [Cronos IBC Bridge Activity API](/for-dapp-developers/cronos-ibc-bridge-activity-api.md) instead. ### FAQs for transactions from/to centralized exchanges **I transferred CRO from the other centralised exchanges (CEXs) to the Crypto.com Defi Desktop wallet, but why it is not showing up in my Crypto.com DeFi Desktop Wallet?** Some centralised exchanges currently only support Ethereum Mainnet ERC20-CRO withdrawal, while the Crypto.com Defi Desktop Wallet only supports Cronos POS Chain & Cronos Chain for the moment, thus you're not able to view any ERC20 assets or balances of Ethereum Chain on the Desktop Wallet. It is highly recommended that all users check the networks before making the withdrawal and always begin with a small amount to make sure the transfer actually works. **I have already made the transfer from the centralised exchange that does not support Cronos Chain to my Crypto.com DeFi Desktop Wallet. What should I do to retrieve my funds?** * Here's what you could do: 1. Send some ETH (around 0.03 ETH) to your `0x..` address for paying the transaction gas fee on Ethereum. 2. Download our Crypto.com App, and register an account (skip this if you're already a user) 3. Send your ERC20-CRO to the Crypto.com App ERC20-CRO deposit address\* 4. When you get your CRO, withdraw your CRO to your ledger address (MAKE SURE YOU SELECT Cronos Chain) `0x..` address 5. You would be able to see your funds on Crypto.com DeFi Desktop Wallet afterwards * Other than this, it is also possible that there is no Ethereum in your wallet, which could result in your funds getting stuck as you aren't able to pay for the Ethereum gas fee. Please ensure you have enough ETH for the transaction. {% hint style="info" %} *For step 3 of transferring your ERC20-CRO, you could either use MetaMask or Ledger Live (for ledger user) to send ERC20-CRO from your Ledger to Crypto.com App. Take the wallet on MetaMask as an example, if you log into the same wallet on MetaMask and switch the network to the Ethereum mainnet on MetaMask, you would be able to access those ERC20 tokens in this wallet on MetaMask. After that, you would be free to transfer the funds to the Crypto.com app then withdraw them to the Cronos network.* {% endhint %} **I would like to send ERC20-CRO from Crypto.com App or Onchain Wallet to the other CEXs directly. Is this possible?** Please make sure both sender and receiver accounts support ERC20 format. Only if the other CEXs support ERC20-CRO can you send it. Users may refer to this guide for more details: * [Difference between ERC-20 CRO and native CRO](https://help.crypto.com/en/articles/5019195-send-and-receive-cro-the-difference-between-native-cro-and-erc20-cro) * [CRO deposit/withdrawal information](https://help.crypto.com/en/articles/4970776-cro-deposit-withdrawal-information-in-crypto-com-app) **I made a transaction on MetaMask (through Cronos network) to another CEX that does not support Cronos Network. How can I retrieve it back?** In this case, only the owner of the receiving account has access to that funds. You could also check if your transaction is successful/confirmed on [Cronos Explorer.](https://explorer.cronos.com/) Given the receiving account is from other CEXs, you may contact the receiving party and find out if it is possible for them to do a manual refund for your transaction. They may or may not do it depending on their own policies. Otherwise, you will most likely not be able to access the funds until that CEX starts to support Cronos. {% hint style="info" %} For additional FAQ about CRO migrations, head to the [CRO Token migration help](https://help.crypto.com/en/articles/5015397-all-about-cro-token-migration) page. {% endhint %}