Interesting proposal and cool to see idea of (dominant) assurance contracts being put into practice. Some questions / thoughts.
1. From marketing perspective, I think using icons of shady dudes in trench coats on your front page does not look good. Makes it look a tool for bad actors rather than a force for good. One alternative design is to have neutral images before (like you see as default profile pics on social media) and then cartoony revealed faces after.
2. My instinct is that existence of good tool isn't the only blocker, but actually getting people to do stuff (and implicitly, committing to doing stuff) is bigger blocker. People are often just lazy. This is just pure instinct though. What do you think? Based on your example of people joining slack channel, maybe idea is to have a commitment action that is small enough for people to easily opt into.
3. When I imagine some use cases, I am not sure how this tool will be the difference between success and failure. E.g. in my workplace, I had vague idea of having an 'internal glassdoor' to make it easier for people to compare salaries/benefits. (Whether this is a good idea is separate question of course). I think the hard part in this use case is talking to individuals, explaining in detail what would idea is, finding compromises that work for different people, etc. But again, maybe I am thinking about this wrong and aim of tool is should be to simply find out who is even interested to discuss it, rather than who is ready to commit to doing more.
4. How do you think this relates to forecasting / prediction tools. Ideas being pursued by Metaculus might help with these coordination issues, by helping reveal the predicted consequences of different actions.
Anyway, best of luck with this project! I'm curious to know more about concrete successes