| CPC G06Q 20/352 (2013.01) [G06F 9/547 (2013.01); G06Q 20/386 (2020.05); G06Q 20/401 (2013.01)] | 20 Claims |

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1. A method for secure merchant payment over a messaging platform based on a contactless card, comprising:
receiving, by a server via a user device, a cryptogram from the contactless card;
validating, by the server, the cryptogram;
extracting, by the server from the cryptogram, a unique customer identifier associated with a user;
verifying, by the server, the unique customer identifier;
retrieving, by the server from a database, account information of the user;
calling, by the server, an application programming interface (API) of a merchant device to make a payment in response to a payment request message received from the merchant device; and
provisioning, by the server, the account information to the merchant device via the API.
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