On-chain? Self custody to Solana…it’s been a thing for a while. It’s invite only but you can sign up for the waitlist and they tend to push invites out to people who sign up pretty quickly.
Check out PSA: Current and upcoming changes to Rewards and Creators - #14 by Saoiray I linked to the most relevant section of the topic, but you may like to browse through the top and rest of there as well.