Thread by @0xyoussea

Now that the dust has settled and we're all friends again

Let's see how this Solana-Base actually works under the hood

Settle down, relax and follow the thread 🧵

How do transactions actually move between Base and Solana?

- The transaction is submitted on Base/Solana
- The gas is paid and the instruction is added to the transaction
- Validators pick up events and relay the transaction to Solana/Base

What if you want to bridge a Solana token to Base?

Just deploy a canonical ERC20 using the `CrossChainERC20Factory` (and seed liquidity).

Every SPL token gets its own deterministic ERC20 on Base. No permission needed.

Works both ways - deploy Base tokens on Solana too.

The bridge uses a simple rule to prevent double-spending:

On the source chain: Native tokens get LOCKED and Foreign tokens get BURNED

On the destination chain: Native tokens get UNLOCKED and Foreign tokens get MINTED

As you can see, those are some basic token bridging mechanics. However, the REAL INNOVATION lies in the Twin Contracts:

- Every Solana wallet gets a deterministic smart contract on Base called a "Twin"
- So your Solana wallet can interact with Base protocols using its Twin

When you attach one or more contract call(s) to a bridge message:

- The call executes FROM your Twin contract
- The Twin becomes msg.sender on Base
- You get full Base smart contract capabilities from Solana

As it's shown in the video

https://x.com/0xyoussea/status/1996655287177277478?s=20

Want to learn more? Read the docs
docs.base.org/base-chain/qui…