# On-chain (RUST crate)

We have developed a RUST SDK, published as a crate + getting started guide here:

{% embed url="<https://crates.io/crates/credix_client>" %}

The guide runs you through a deposit and withdraw example.&#x20;

### Devnet

The Solana program, deployed on Solana devnet has the following public key:

```
crdMwy1xFGCXHqSvBwvQtvfzcMKTEy5ThWFTjHVZhNK
```

### Mainnet

The Solana program, deployed on Solana mainnet-beta has the following public key:

```
CRDx2YkdtYtGZXGHZ59wNv1EwKHQndnRc1gT4p8i2vPX
```