Quite an unusual concept of the project. The implementation looks pretty simple, but I think that to attract people to the platform will need advertising.
Advertising is necessary for any project. These are the realities of modern business. But the concept of the project, it seems to me, will attract people who find out about this project.
You can spent millions on advertising, but the quintessence is to announce project to small group of people and engage them into new users acquisition.