So I can’t believe any one on earth can authenticate right now according to the docs. Every piece of code about authentication requires a passphrase. There is no passphrase offered anymore for keys. So what gives? And also, “Just like restful api authentication” is absolutely terrible. That is a false statement. Websockets don’t have endpoints in order to construct the signature.
Did you read documentation?:
You should use GET /users/self/verify endpoint when you generate signature.
Also make sure you are not mixing Coinbase Pro with Advanced Trade / Sing in with Coinbase.
You still having this issue?