Intermediate
Exchange between different blockchains: how to successfully perform an inter-chain swap without errors
When using a decentralized wallet , you quickly encounter a common problem: how to perform an exchange between different blockchains when each network operates with its own standards, tokens, and transfer rules? Simply put, an inter-chain swap requires a bridge, a specialized protocol, or an instant exchange service capable of handling the conversion between two distinct networks. Among these solutions, platforms like Exolix enable rapid exchanges between two assets even when they are based on entirely different blockchains.
Table of contents
Whether you want to swap USDT on Ethereum to BTC on Bitcoin , or convert a Solana token to a BNB Chain asset , the logic remains the same: a swap between different blockchains requires an interoperability layer. This article analyzes the most reliable methods, technical risks, hidden fees, best practices, and suitable tools for intermediate Web 3.0 .
Why a simple transfer doesn't work between two blockchains
An exchange between different blockchains is nothing like a typical swap on a DEX. It's a more complex process because each blockchain has:
- a token standard (ERC-20, SPL, BEP-20, etc.);
- an independent architecture (EVM, SVM, UTXO…);
- a specific consensus method Proof of Stake , Proof of History , Nakamoto consensus);
- network fee system incompatible with other channels.
For this reason, directly sending a token from one chain to another usually results in a total loss of funds. A specialized mechanism, often called inter-chain bridge or , is required to convert or reconstruct the asset on the target blockchain.
The three main methods for exchanging data between different blockchains
There are three main approaches. They serve the same objectives, but their technical operation and level of risk vary greatly.
1. Interoperable bridges (blockchain bridges)
A bridge performs a swap between different blockchains by locking your tokens on the originating chain and issuing an equivalent representation on the destination chain. The asset received is not always "the same," but a wrapped token representing its value.
Example: sending “native” BTC Ethereum yields W BTC (wrapped bitcoin).
How does a technical bridge work?
- You send a native token to an address controlled by the bridge's smart contract.
- The protocol locks or burns the original token.
- An agent, an oracle , or an smart contract validates the transaction.
- The bridge emits the equivalent on the target blockchain.
Advantages of bridges
- DeFi systems requiring “wrapped” versions.
- Access to new protocols without selling the initial asset.
- Fees are generally low depending on the blockchains involved.
Limitations of bridges
- The process can sometimes be slow depending on the security of the protocol.
- Requires minimal technical understanding.
2. Multi-chain DEXs or inter-chain aggregators
Some DeFi platforms offer cross-chain swaps without requiring manual wrapping. They integrate multiple blockchains and convert tokens via cross-chain routers.
Examples of such solutions include THORChain . They enable exchange between different blockchains by automating liquidity management on each network.
Benefits
- You receive a native token on the target blockchain, not a wrapped token.
- The interface resembles a classic swap file.
- Less manual handling.
Disadvantages
- Fees vary depending on the liquidity pools.
- Dependence on pool depth.
3. Instant exchange services (Exolix, etc.)
For many users, the simplest method remains a non-custodial service that handles the conversion between two blockchains itself. Instead of manipulating a bridge or a multi-chain DEX, you simply send the source asset, and the platform returns the native asset on the target blockchain. Exolix is one such service.
Principle of an instant exchange service
- You select the pair (e.g. USDT ERC-20 → native BTC ).
- You send the funds to the address provided by the platform.
- The platform finds the best path (DEX, CEX, internal liquidity).
- You receive the final asset on your target blockchain.
This approach avoids using a traditional bridge, as the platform handles the technical operations internally.
The risks of an exchange between different blockchains
Inter-chain swaps carry more risks than simple on-chain swaps. The main risks to be aware of are:
1. Liquidity risk
A network may lack liquidity on a given pair, resulting in:
- high costs;
- significant slippage;
- a partially executed swap.
2. Cumulative costs
A swap between different blockchains sometimes involves several layers of fees:
- source network costs;
- swap or bridge fees;
- destination network charges;
- integrated spread within the service used.
3. Incorrect destination address
Unlike an intra-chain swap, a bad address can make funds unrecoverable if the target blockchain does not support the asset sent.
How to successfully perform an exchange between different blockchains (simple method)
Here are the universal steps that apply, regardless of the solution used:
- Choose the service that suits your needs (instant swap, bridge, inter-chain DEX).
- Verify the source blockchain and the target blockchain.
- Confirm the receiving network in your wallet.
- Check the network charges on both blockchains.
- Test with a small amount before sending a large sum.
- Wait for transaction validation and verify receipt.
How to avoid the most common mistakes
1. Check the target network before sending
A token can exist on multiple networks. Receiving USDT TRC-20 when you were expecting USDT ERC-20 may require a new conversion.
2. Prioritize transparent services
A good exchange service should clearly display:
- the estimated conversion time;
- internal costs;
- supported networks;
- the source of liquidity.
3. Test systematically with a small amount
Even experienced users make mistakes when switching protocols.
Conclusion: What is the best way to perform an exchange between different blockchains?
For an intermediate Web3 user, there are several ways to perform an inter-chain swap . The choice depends on the level of control you desire, the nature of the assets, and your acceptable level of risk. If your goal is simplicity and speed, an instant exchange service (Exolix or others) remains a practical solution. If you're looking for native cross-chain without wrapped tokens, consider inter-chain DEXs. Finally, for advanced DeFi strategies, specialized bridges remain essential.
Whatever your objective, an exchange between different blockchains requires preparation: network verification, fees, available liquidity, protocol security, and wallet compatibility. A methodical approach ensures a smooth transfer without unpleasant surprises.
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Yoann
Training engineer, I quickly became interested in the field of finance. Convinced that decentralized finance has a bright future ahead of it, I participate in its democratization by developing Crypternon.
