My question is, should I just blacklist any contact with blockchain companies? Have any of you ever worked with a blockchain company that wasn't a scam?
Everyone has their own standards but for me "not a scam" means that it delivered value to customers on par with a normal startup that doesn't have blockchain anywhere in its name or offering. i.e. if it is a blockchain shoe company, is anyone actually wearing a shoe they bought from them that they sold and shipped, like a non-blockchain shoe company would deliver.
But to your question: Yes, I was the first employee at Origin Protocol back in 2017 and it definitely wasn't a scam.
https://www.originprotocol.com
We really did build a protocol (Smart contract + IPFS) for sharing economy transactions in the style of Airbnb, eBay, etc. Here's a video of me walking through the code:
https://www.youtube.com/watch?v=M0oyEDlEQuM
We had a few earlier users, including rental company in Europe, but it never caught on. What we didn't realize was that the friction was just too much to make a market: People weren't willing to jump through all the hoops required for a crypto transaction (not to mention the conceptual learning) just to save 10-20%.
I left in 2019 and they've since pivoted to other product directions, but none that I would call scams.