Verification

These are all methods on the SignUp class that allow you to verify a user's sign-up request.

`prepareVerification()`


function prepareVerification(params: PrepareVerificationParams): Promise<SignUp>;

The prepareVerification is used to initiate the verification process for a field that requires it. As mentioned above, there are two fields that need to be verified:

emailAddress: The email address can be verified via an email code. This is a one-time code that is sent to the email already provided to the SignUp object. The prepareVerification sends this email.
phoneNumber: The phone number can be verified via a phone code. This is a one-time code that is sent via an SMS to the phone already provided to the SignUp object. The prepareVerification sends this SMS.

`PrepareVerificationParams`

Name	Type	Description
`strategy`	`'phone_code' \| 'email_code' \| 'email_link' \| 'saml' \| 'oauth_<provider>' \| 'web3_metamask_signature'`	The verification strategy to validate the user's sign-up request. The following strategies are supported: `phone_code`: Send an SMS with a unique token to input. `email_code`: Send an email with a unique token to input. `email_link`: Send an email with a link which validates sign-up `saml`: Authenticate against SAML. Experimental `oauth_<provider>`: Authenticate against various OAuth providers. `web3_metamask_signature`: The verification will attempt to be completed using the user's web3 wallet public address. The `web3_wallet_id` parameter can also be specified to select which of the user's known web3 wallets will be used. Currently Clerk supports Metamask.
`redirectUrl`	`string`	The URL to redirect the user to after the verification process is complete. Only supported on `email_link`, `oauth_<provider>`, and `saml` strategies.

`attemptVerification()`


function attemptVerification(params: AttemptVerificationParams): Promise<SignUp>;

Attempts to complete the in-flight verification process that corresponds to the given strategy. In order to use this method, you should first initiate a verification process by calling SignUp.prepareVerification.

Depending on the strategy, the method parameters could differ.

`AttemptVerificationParams`

Name	Type	Description
`strategy`	`'phone_code' \| 'email_code' \| 'web3_metamask_signature'`	The verification strategy to complete the user's sign-up request against. The following strategies are supported: `phone_code`: Validates an SMS with a unique token to input. `email_code`: Validates an email with a unique token to input. `web3_metamask_signature`: The verification will attempt to be completed using the user's web3 wallet public address. The `web3_wallet_id` parameter can also be specified to select which of the user's known web3 wallets will be used. Currently Clerk supports Metamask.
`code`	`string`	The code that was sent to the user via the `phone_code` or `email_code` verification strategies.
`signature`	`string`	The signature that was sent to the user via the Web3 verification strategy.