# Get Wallet Registration Nonce

**POST /v1/auth/wallets/registrations/nonce**

Initiates a wallet registration request for the specified user. This endpoint will return a `nonce` that must be signed by the private key of the wallet address you are registering against the user using the [SIWE EIP-4361](https://eips.ethereum.org/EIPS/eip-4361) (Sign in with Ethereum) spec. We will apply this to both Ethereum and Solana. In the case of Solana, instead of `${domain} wants you to sign in with your Ethereum account:`, we will expect `${domain} wants you to sign in with your Solana account:` and also Chain ID will not be expected either for Solana. Once verified, we will attach the wallet to the user specified.

## HTTP Request

`POST /v1/auth/wallets/registrations/nonce`

## Returns

A successful response returns an object with `nonce` and \`user_id\` properties.


## Servers
- Production: https://api.moonkey.fun (Production)


## Authentication methods
- Authorization


## Parameters



## Body parameters
Content-type: application/json

- **wallet_type** (string)
  Determines the type of wallet to register. Possible values: ethereum, solana (more coming soon!).
- **public_address** (string)
  Public wallet address of the wallet.
- **user_id** (string)
  Unique user ID to associate the wallet with. If left blank/omitted and no user is previously attached to this wallet, we will create a user. Otherwise. we will return the user_id of attached to this wallet in the response.

## Responses
### 200: OK

#### Body Parameters: application/json (object)
- **id** (string)
  
- **app_id** (string)
  
- **user_id** (string)
  
- **public_address** (string)
  
- **wallet_type** (string)
  
- **challenge** (string)
  
- **updated_at** (number)
  
- **created_at** (number)
  


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