Just a general recommendation on how to better approach this, I used to make this mistake all the time when you ask people if there's anything you can do to help you're also asking them to take to come up with something that's a good weapon-target match to your skillset which they're unsure of, which ends up being an imposition on their time to both try to evaluate your skillset and figure out how to best match it to what they're working on. When people are really busy it's not the best way to get to them or get them to help / give opportunities.

A better way to approach it is by building some demonstrations of your skills and do a little research into who you're pitching so you can open with "Hi I built this and I think your company could benefit from this and me in xyz ways" . Everything I've been able to do for Bitcoin I did by taking that approach of "here's how I can help", but every time I did a "how can I help" it ended up going nowhere.