aetherium was was so much better than it ever was on Bitcoin and they probably won't ever be any better on on BTC but on Bitcoin SV we've done something about that so a script is available is a BS code extension which is a probably one of the most popular IDs in the world right now and it's trivially easy to use and here's just an example of their documentation that shows how to do a rabbin signature which is one mechanism of digitally signing data in a transaction any arbitrary data ana script is not the only one there's also