When a consumer checkouts out, the transaction interface presents a buy now pay later option selected by the consumer for payment of a transaction. Consumer information is collected through the interface and a registered financial institution (FI) is presented the transaction details and information for servicing a loan. Terms are provided from the FI and presented to the consumer through the interface. Acceptance by the consumer causes a smart contract with the terms and parties of the loan to be generated in a blockchain (BC) and payment processed by the BC by transferring funds from a FI wallet to a retailer wallet associated with the transaction.