📍 Bolt Help / Release Changelog / Single-Identifier Verification in Checkout Single-Identifier Verification in Checkout Page Contents Click to expand. Single-identifier verification in checkout is now generally available. The New During checkout, the Bolt one-time verification prompt now appears after a returning shopper enters one of their identification methods (either phone number or email address). This removes a step from the logged-in checkout flow and helps shoppers who may have trouble remembering the right combination of identifiers associated with their account.