The beauty of this is that @boardwalk never touches your bitcoin. Prisms use zap tags (nip 57 appendix G) to add splits to a note and when that note is zapped by a client like Snort or Amethyst the client pays each user individually.

Check it out on Zapper:
https://zapper.nostrapps.org/zap?id=note184nyguhqvn24khe46s536rr8fed93j7l2c7gqvl7gw3y8nhd6u9skhtkax