The SUI token is the native currency of the Sui blockchain and is handled natively by the protocol, not by a traditional smart contract.

• The core modules for working with SUI are in the Sui Framework package, which has the address:

  0x2
  

This package includes modules like sui::coin and sui::balance, which define how SUI coins are managed and transferred using Move.

On the Sui platform, the SUI contract address is 0x2::sui::SUI.

The SUI token isn’t like an ERC-20 contract with a specific contract address. Instead, it’s built directly into the Sui blockchain as a native coin type. It’s defined inside the Sui framework, which lives at address 0x2 on mainnet. So technically, the SUI coin type is 0x2::sui::SUI, and whenever you see a Coin<0x2::sui::SUI>, that’s a real SUI token object.

In Sui, every coin is an object not just a balance so your wallet might hold multiple SUI coin objects that together represent your total balance. It’s a bit different from traditional chains, but it gives you more flexibility for smart contracts and ownership.