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RealReturn is an open leaderboard of verified real investment returns, enabled by TLSNotary and Jomo.


Created At

ETHGlobal New York

Winner of


🥇 Ethereum Foundation — Best use of TLSNotary


🏆 ETHGlobal New York 2023 Finalist

Project Description

The Gamestop saga made subreddit r/wallstreetbets famous. Now not only is the space full of YOLO gambling, there are loads of fake information and fake FOMOs too, generated from fake gain reports. Below are just a few examples:

Up till today, people can only recognize those via examining the screenshots, or try to make common sense out of those numbers. Neither side of a claim can really prove themselves unless the account holder is willing to publicly share their credentials.

Now with RealReturn using Jomo and TLSNotary, we can enable anyone to prove their investment return publically without sharing their credentials to anyone, or anywhere. Cryptography such as 3-party TLS, MPC etc are applied to user's TLS session with the application server, so that even though the contents of the session are still only visible to the user and application server, the notary could generate something on the side to attest that the transcript is not tempered with.

Privacy and verifiability, we no longer need to sacrifice one for the other, but are able to embrace both.

This allows and enables a more open, authentic, but yet still privacy focused future realm. If you are interested in building with Jomo too, or have great suggestions or feedback, please don't hesitate to follow us on Twitter ( or shot us an email at [email protected].

How it's Made

RealReturn uses Jomo ( and TLSNotary. Jomo allows any business or application to easily get a verification that the user has access to a website account, and that certain private data that is fetched from that account satisfies certain criteria.

Under the hood, 3 party TLS, MPC and ZKP are used so that no one in the process, Jomo, TLSNotary, nor the business client gets to know more information except for the parts the user chose to reveal. At the same time, the underlying cryptography helps us validate whatever the user reveals is truth.

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