Please check out: a platform to help you building the perfect crypto portfolio

Recently an idea came into my mind for a crypto-related service.
I noticed:

• There is no easy way to share my coins portfolio with others without having to disclose the size of my investment.
• There are people who claim that I should buy / sell coin X or Y because of Z.
• There is no easy way to check the track record of someone who makes such a recommendation.

Specifically:
The site: https://stakestrategy.com
What can you do: register and publish your crypto portfolio. Doing this, you have a choice A: per coin you enter the amount of units you hold, or B: just enter the percentages (and don't spoil your portfolio value). Based on the publicly available price information, the relative ROI of the portfolio is calculated in real time. Rankings are made periodically so that you can see whom's portfolio did the best in the past hour, day, month, year etc. With this you can earn credits with which you can build a reputation.

What is the purpose?: If everything works nicely, I want to encourage professional traders to make their portfolio publicly available. With this you can demonstrate how good (or not) you are. The portfolios of the users with a good reputation (ie: that built a good track record) can be used as trading tips (buying or selling coin X / Y) for the other users.

Feedback: Please let me know what you think, and if this idea has potential to succeed.