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

- Snap
- Restricted

# snap_getBip44Entropy

Enables you to [manage users' non-EVM accounts](https://metamask-docs-git-imp-agt-scr-90-100-consensys-ddffed67.vercel.app/snaps/features/non-evm-networks/)by deriving the [BIP-44](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki)keys specified by the `coinType` parameter. The keys are derived using the entropy from the user's Secret Recovery Phrase.

If the keys you want to derive don't conform to the BIP-44 structure, use [snap_getBip32Entropy](https://metamask-docs-git-imp-agt-scr-90-100-consensys-ddffed67.vercel.app/snaps/reference/snaps-api/snap%5Fgetbip32entropy)instead.

This method is designed to be used with the [@metamask/key-tree](https://npmjs.com/package/@metamask/key-tree)module. `@metamask/key-tree` can help you get the [extended private keys](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#extended-keys)for user addresses, but it's your responsibility to know how to use those keys to, for example, derive an address for the relevant protocol or sign a transaction for the user.

## Parameters[​](#parameters "Direct link to Parameters")

object

required

An object containing the parameters for the `snap_getBip44Entropy` method.

### coinType

number

required

The coin type to use for the derived key, as specified in the [SLIP-44 registry](https://github.com/satoshilabs/slips/blob/master/slip-0044.md).

### source

string | null

The ID of the entropy source to use. If not specified, the primary entropy source will be used. For a list of available entropy sources, see the `snap_listEntropySources` method.

## Returns[​](#returns "Direct link to Returns")

object

A JSON-serializable BIP-44 coin type node containing the requested BIP-44 entropy.

### depth

0 | 1 | 2 | 3 | 4 | 5

The 0-indexed BIP-44 path depth of this node.

A BIP-44 path is of the form:

`m / 44' / coin_type' / account' / change / address_index`

With the following depths:

`0 / 1 / 2 / 3 / 4 / 5`

### masterFingerprint

number | null

The fingerprint of the master node, i.e., the node at depth 0. May be undefined if this node was created from an extended key.

### parentFingerprint

number

The fingerprint of the parent key, or 0 if this is a master node.

### index

number

The index of the node, or 0 if this is a master node.

### network

"mainnet" | "testnet" | null

The network for the node. This is only used for extended keys, and defaults to `mainnet`.

### privateKey

string | null

The hexadecimal string representation of the private key for this node. May be `undefined` if the node is a public node.

### publicKey

string

The hexadecimal string representation of the public key for this node.

### chainCode

string

The hexadecimal string representation of the chain code for this node.

### coin_type

number

### path

\`m / bip32:${number}' / bip32:${number}'\`

## Example

- Manifest
- Usage

```
{
  "initialPermissions": {
    "snap_getBip44Entropy": [
      {
        "coinType": 3
      }
    ]
  }
}

```

```
import { getBIP44AddressKeyDeriver } from '@metamask/key-tree'

// This example uses Dogecoin, which has coin_type 3.
const dogecoinNode = await snap.request({
  method: 'snap_getBip44Entropy',
  params: {
    coinType: 3,
  },
})

// Next, create an address key deriver function for the Dogecoin coin_type
// node. In this case, its path is: m/44'/3'/0'/0/address_index
const deriveDogecoinAddress = await getBIP44AddressKeyDeriver(dogecoinNode)

// These are BIP-44 nodes containing the extended private keys for the
// respective derivation paths.

// m/44'/3'/0'/0/0
const addressKey0 = await deriveDogecoinAddress(0)

// m/44'/3'/0'/0/1
const addressKey1 = await deriveDogecoinAddress(1)

```