Purpose: The online sales smart contract is a protocol that is prepared to set up an electronic smart agreement between the buyer and the seller and is concluded and executed automatically based on the information related to the terms of the contract. The aim of the current research is to identify the causal factors affecting the online sales smart contract and its consequences using a systematic review.Methods: A systematic review was used in this research. This method is one of the types of qualitative research methods that are used to investigate phenomena and identify categories based on research literature. The statistical population of the research includes all research articles obtained from quantitative and qualitative studies regarding smart contracts and smart contracts in both Persian and English languages. With the aim of identifying the factors affecting the smart sales contract and its consequences, finally, 30 articles related to the research topic in the period from 2009 to 2022 in Farsi and English were selected and studied with a systematic review approach, and the text of the articles was based on the application of the Grounded Theory approach and based on the MaxQda software, central and selective coding were performed and analyzed. Reliability and Cohen's kappa coefficient were used as a measure to replace validity and reliability.Findings: By analyzing the collected articles, 678 English and Farsi articles were identified in the coding stage, and after scientific investigations, 94 articles related to the research topic were categorized, and finally 30 articles were included.In the continuation of the data analysis process, the concepts were categorized into six categories of the central phenomenon, causal conditions, background conditions, intervening conditions, strategies, and consequences through the central coding. The current research led to the presentation of a paradigm model called online sales smart contract and its consequences using a systematic review.Conclusions: Online sales smart contracts are programs that are stored on the blockchain and are executed when predetermined conditions are met. They are typically used to automate the execution of an agreement so that all participants can be assured of the outcome immediately without the intervention of an intermediary or wasted time. They can also automate a workflow and trigger the next action when conditions are met. Smart sales contracts are efficient because they have completely solved the issue of trust. The smart sales contract uses blockchain to confirm, validate, record, and enforce the terms agreed between the parties The presented model clearly defines the effective causal factors of establishing an online smart seller and its consequences, and leading companies can use this proposed model in their online sales on the blockchain platform
