> For the complete documentation index, see [llms.txt](/llms.txt).

# Non-EVM networks

You can manage users' non-EVM accounts and assets with their approval, using [Snaps API](/snaps/reference/snaps-api/) methods.

important

Managing users' keys comes with great responsibility: Misplaced or stolen private keys can lead to a complete loss of funds for users of your Snap.

## Responsible key management[​](#responsible-key-management "Direct link to Responsible key management")

It's critical to practice responsible key management. The general rule is: **Don't create a situation where your users can lose assets.**

examples of responsible key management:

- Deriving private keys and/or storing them in Snaps persistent storage, without ever moving them out of the [Snaps execution environment](/snaps/learn/about-snaps/execution-environment/).
- Ensuring arbitrary code execution can't access irreversible operations or private keys.
- Asking the user for consent and informing them of what's going to happen before performing irreversible operations.

examples of irresponsible key management:

- Allowing extraction of private keys outside the Snap in any way, especially through RPC or network connections.
- Executing arbitrary or untrusted code with access to private keys.
- Not getting informed consent before performing irreversible operations.
- Asking for consent but ignoring the decision.
- Exposing key material in clear-text.
- Producing a bug that leads to any of the above.

## Derive keys[​](#derive-keys "Direct link to Derive keys")

To derive a user's private keys:

1. Choose between the [BIP-32](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki) or [BIP-44](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki) specifications to derive the user's private keys. If the keys you want to derive conform to the [BIP-44](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki) structure, use [snap_getBip44Entropy](/snaps/reference/snaps-api/snap%5Fgetbip44entropy/) to derive them. Otherwise, use [snap_getBip32Entropy](/snaps/reference/snaps-api/snap%5Fgetbip32entropy/).
2. Add the required permission to your manifest file.
3. Find out the derivation path to use. This is dependent on the application you're building.
4. Use the [@metamask/key-tree](https://github.com/MetaMask/key-tree) module to derive the keys. Any additional code, for example, to derive addresses from keys, is application-specific.

### Dogecoin example[​](#dogecoin-example "Direct link to Dogecoin example")

For example, to derive Dogecoin keys:

1. Dogecoin uses the BIP-44 scheme, so you'll use [snap_getBip44Entropy](/snaps/reference/snaps-api/snap%5Fgetbip44entropy/).
2. Dogecoin has coin type `3`, so add the following to the manifest file:  
snap.manifest.json  
```  
"initialPermissions": {  
  "snap_getBip44Entropy": [  
    {  
      "coinType": 3  
    }  
  ]  
}  
```
3. Dogecoin uses the following derivation path:  
```  
m/44'/3'/0'/0/{address_index}  
```  
To get the second Dogecoin account, add the following code to your Snap:  
index.js  
```  
import { getBIP44AddressKeyDeriver } from '@metamask/key-tree'  
// Get the Dogecoin node, corresponding to the path m/44'/3'.  
const dogecoinNode = await snap.request({  
  method: 'snap_getBip44Entropy',  
  params: {  
    coinType: 3,  
  },  
})  
/**
 * Create a function that takes an index and returns an extended private key for m/44'/3'/0'/0/address_index.
 * The second parameter to getBIP44AddressKeyDeriver isn't passed. This sets account and changes to 0.
 */  
const deriveDogecoinAddress = await getBIP44AddressKeyDeriver(dogecoinNode)  
// Derive the second Dogecoin address, which has index 1.  
const secondAccount = deriveDogecoinAddress(1)  
```

## Examples[​](#examples "Direct link to Examples")

The following are examples of existing Snaps that manage accounts and keys:

- [Dogecoin Snap tutorial](https://github.com/ziad-saab/dogecoin-snap)
- [Consensys Starknet Snap](https://github.com/Consensys/starknet-snap)
- [Account Labs Bitcoin Snap](https://github.com/snapdao/btcsnap)
- [@metamask/bip32-example-snap](https://github.com/MetaMask/snaps/tree/main/packages/examples/packages/bip32)
- [@metamask/bip44-example-snap](https://github.com/MetaMask/snaps/tree/main/packages/examples/packages/bip44)