How to use Wormhole, the Solana — Ethereum bridge

TLDR: access the bridge through this link:

If you’ve been active in the crypto space in 2021, you probably heard the expression “Sol summer” more than once. It finally happened: SOL, the native token of the Solana blockchain, has started a run from below $30 at the end of July 2021 to more than $150 at the time of writing, the 6th of September. 5x in 5 weeks!

This price action is bringing a lot of attention to the Solana ecosystem and many are realising that the Solana network is fast and cheap to use compared to Ethereum. No wonder many crypto projects chose to develop on it, like the strategy game Star Atlas or the Decentralised Exchange Aldrin.

In order to bring even more liquidity to the ecosystem, Solana launched a token bridge named Wormhole. It allows to bridge ERC-20 (Ethereum) tokens to their SPL (Solana) version and vice versa.

In the following section we’re going to see how to use Wormhole to bridge the Aldrin exchange native token from its ERC-20 version, WWT, to its SPL version CCAI/RIN. I know that having all these tickers may seem strange but it is because the project was first named and released its token first on ERC-20 with the ticker WWT. In a second time, CCAI, the SPL version was released. Then, after a few weeks, rebranded to and CCAI became RIN.

How to bridge Ethereum tokens to Solana with Wormhole

To bridge the tokens from ERC-20 to SPL, you need to start from an Ethereum wallet and arrive to a Solana wallet.

I will use Metamask and Sollet, but Wormhole currently accepts Metamask and Wallet Connect for Ethereum and Phantom, Ledger, Sollet, Solong and MathWallet for Solana.

  1. Open the Wormhole bridge page at
    Make sure you are at the right address as scammers register similar addresses and put up fake sites that can drain your wallets empty.
    The bridge is set up in the Ethereum => Solana direction by default and that’s what we need here, but know that it can be reversed by clicking on the arrow in the centre of the page.
    Click on the “Connect” button in the Ethereum zone.

2. A window asking you to select an ethereum wallet will pop up. Choose your wallet and confirm you want to connect to the website in the wallet confirmation pop up window.

3. Now repeat the same sequence in the Solana zone: click on the “Connect” button.

4. A window asking you to select a Solana wallet will pop up. Choose your wallet and confirm you want to connect to the website in the wallet confirmation pop up window.

5. Click on the token selector in the Ethereum zone and select the token you want to bridge. In our case, the WWT token is named CCAI and has the ETH symbol as a footer (more ticker fun!).
[16th September EDIT: this has changed, the token is now named “RIN” — access the bridge through this link: ]

6. You’ll see that the Solana token field has automatically filled with CCAI too. Now put the number of tokens you want to bridge or just click on the number above the field if you want to bridge all the tokens that are in your wallet. Then click on the “Transfer” button.

7. If it’s the first time you use the bridge for this token, you need to authorise the platform to spend your WWT tokens (remember, it’s the real name of CCAI on Ethereum). You will see a Metamask window pop up asking you to confirm this spending authorisation. Click on the “Confirm” button.

8. Once this first transaction has gone through, a second Metamask window will pop up asking you to validate the token transfer transaction. Click on the “Confirm” button.

9. Et voila! Once this transaction goes through, you just have to wait a few minutes and your tokens will appear on your Solana wallet. You can follow the confirmation process on the notification window that pops up on the left part of the page.

You can check that the amounts in the wallets have changed. In this example, there is 0 token left in the Ethereum wallet and the 669.299 tokens bridged arrived in the Solana wallet which already contained 171 CCAI. The new total is now 840.299 CCAI.

I hope you will find that How-to useful, please leave a comment you have any questions.


Wormhole Bridge:


This article is for informational purposes only. It contains no financial advice. Always do your own research before investing in any crypto project.



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Hagop Demirdjian

Crypto enthusiast since 2017, I love researching new projects, crunching data and helping out when I can.