Automatic address validation

A system, comprising:

• a non-transitory memory storing a plurality of financial service accounts, wherein each financial service account in the plurality of financial service accounts comprise one or more postal addresses;
• and
• one or more hardware processors coupled to the non-transitory memory and configured to execute instructions to cause the system to perform operations comprising:
• receiving, from a merchant website presented on a user device associated with a user, a validation request for validating a combination of an account identifier and a portion of a postal address provided by the user;
• validating the combination of the account identifier and the portion of the postal address by identifying a particular financial service account from the plurality of financial service accounts based on the account identifier and matching the portion of the postal address with a particular postal address associated with the particular financial service account;
• in response to the validating, generating a token based on the combination of the account identifier and the portion of the postal address;
• transmitting the token to the merchant website;
• receiving, from the merchant website, a redirect request that redirects the user from the merchant website to a payment service provider website, wherein the token is appended to the redirect request;
• and
• in response to receiving the token appended to the redirect request, providing, on the user device, a user interface for completing a purchase transaction between the user and the merchant website using the particular financial service account based on the token.

A method, comprising:

• receiving, by one or more hardware processors from a merchant website presented on a user device associated with a user, a validation request for validating a combination of an account identifier and a portion of a postal address provided by the user;
• accessing a plurality of financial service accounts with a payment service provider, wherein each financial service account in the plurality of financial service accounts comprise one or more postal addresses;
• identifying a particular financial service account from the plurality of financial service accounts based on the account identifier and matching the portion of the postal address with a particular postal address associated with the particular financial service account;
• validating the combination of the account identifier and the portion of the postal address based on the identifying;
• in response to the validating, obtaining a token for the particular financial service account;
• transmitting the token to the merchant website;
• receiving a redirect request from the merchant website;
• determining that the token is appended to the redirect request;
• and
• in response to receiving the redirect request and determining the token is appended to the redirect request, processing a purchase transaction between the user and the merchant website using the particular financial service account based on the token.

A non-transitory machine-readable medium having stored thereon machine-readable instructions executable to cause a machine to perform operations comprising:

• receiving, from a merchant website presented on a user device associated with a user, a validation request for validating a combination of an account identifier and a portion of a postal address provided by the user;
• validating the combination of the account identifier and the portion of the postal address by identifying a particular financial service account from a plurality of financial service accounts based on the account identifier and matching the portion of the postal address with a particular postal address associated with the particular financial service account;
• in response to the validating, generating a token based on the combination of the account identifier and the portion of the postal address;
• transmitting the token to the merchant website, wherein the transmitting causes the token to be appended to a redirect request that redirects the user from the merchant website to a payment service provider website;
• receiving, from the merchant website, the redirect request comprising the token;
• and
• in response to receiving the redirect request, providing, on the user device, a user interface for completing a purchase transaction between the user and the merchant website using the particular financial service account based on the token included in the redirect request.