Blockchain - Kotlin app add on feature

I am looking to develop a feature to add onto my existing Kotlin mobile application utilizing blockchain. The feature I need to develop is for monetization model integration, however I do not have an existing market for the app feature, and will require help in creating a market. For monetization model, I plan to use an ecommerce model to sell products. I am looking for a skilled freelancer to help bring my vision to life by developing a feature that satisfies all of my requirements. If you have experience in blockchain and mobile application development, and believe you are the right person for this project then please contact me and submit your proposal. I am looking forward to hearing from someone soon!