fermi swap is a cross-chain swap bridge that moves crypto from one blockchain to another. You choose the token and network you have, then the token and network where you want funds to arrive. It shows a route and expected amount, so you can check the result and cost before signing.
What the service delivers
A cross-chain swap changes where your funds live and, if you choose, which token you hold. A plain bridge aims to deliver the same asset on another chain. A swap can deliver a different asset, such as SOL on Solana in exchange for USDC on Ethereum.
USDC is a dollar-linked token; SOL is Solana’s own coin. Ethereum and Solana keep separate records, so tokens cannot simply move from one record to the other. A bridge carries value between them, while a swap trades one token for another.
Ethereum.org’s bridge documentation describes routes that lock tokens on one chain and issue matching tokens on another. Other routes pay from tokens already available on the destination chain. The route matters because two tokens with the same ticker can have different contract addresses—the on-chain IDs for the exact tokens you receive.
How the route reaches the other chain
One fermi swap route can involve several steps, even if the screen presents a single transfer. Your wallet may first request an approval, which lets a specified contract spend a set token amount. You then sign the source transaction that sends the tokens.
After that transaction is confirmed, a bridge or relay carries the transfer instruction across chains. A relay is a service that passes the instruction to the receiving network. The route then releases, issues, or pays out tokens there and makes any requested trade.
What if you have 100 USDC on Ethereum and want SOL on Solana? The route could trade on one side, carry value across, and deliver SOL on the other. That is an illustration; the live quote determines the available route and its actual steps.
The source transaction can succeed before your destination wallet updates. A route’s status screen should show transaction hashes, which are public receipt IDs for the network records. You can check each hash in a block explorer, a site that displays those records.
What a quote really costs
A useful quote supports your networks, tokens, and amount at a total cost you accept. For a fermi swap bridge quote, check the fermi swap supported chains before choosing the receiving token. Support for Solana alone does not mean every Ethereum token can arrive as every Solana token.
A supported pair can still lack a route for your amount. Routes depend on liquidity, meaning tokens available to pay users on the receiving side. Minimum and maximum amounts may also apply, so enter your actual amount before judging a quote.
Compare the amount arriving, not only a fee label. Four parts can affect what you pay:
- Source gas: the source network’s processing fee, paid in a coin such as ETH.
- Bridge or relay fee: payment for carrying value or instructions between networks.
- Swap spread and price impact: the exchange rate gap and the effect of your trade size.
- Destination gas or account setup: charges for delivery or a new receiving token account.
For an illustrative example, suppose 100 USDC becomes 99.20 USDC, with $1.50 source gas paid separately. The quote uses $0.80, making the example’s total cost $2.30. If the minimum received is 98.70 USDC, the quote allows roughly 0.5% more loss before the trade fails.
Check where a refund goes if the destination trade cannot finish. On Solana, receiving a token for the first time may require a token account. Solana’s official docs explain that creating one ties up roughly 0.002 SOL as a recoverable storage deposit; some routes cover it.
How to complete the swap
To swap crypto with fermi, select the source chain and token shown in your wallet. Enter the destination chain, exact token, receiving address, and amount. Read the expected output, minimum received, total fees, and time estimate before signing.
Check that the address belongs to a wallet you control on the destination network. Confirm the receiving token’s contract address when several versions share a ticker. For a first transfer, send a small amount and wait for it to arrive before sending the rest.
On an approval prompt, check the contract and the amount it can spend. An unlimited approval stays active until revoked. Never enter your wallet’s recovery phrase into a swap screen.
Save the transaction hashes and watch the destination wallet after submitting. A slow source confirmation can turn a minutes-long estimate into an hour or more. If the quoted window passes, use the route’s status or support channel with those hashes.
Choose by the exact token delivered, total cost, and minimum received—then verify its arrival on the destination chain.
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