Yeah, it's an Employment Identification Number. It's part of our tax system.
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqvpkystedk2lldqlkkyd084tj5e39rpxn7lad6qeq9uka7kfw9jrsuf7xwn ouch, I don't even know what's that. Some US tax system stuff?
Discussion
If you are an sole proprieter, you can use your SSN as your EIN.
Of course that raises the issue of whether you should provide something like that... but that's a whole other issue.