Kind 37375 - addressable event. d-tag is title obfuscated with a digest of private info. NIP-44 encrypted.
My big thinking now is whether I need a different kind for personal health records. Haven't decided that yet.
Discussion
I see, that kind is specific from your implementation right or is defined in a nip? Just curious because I'm thinking in start coding a simple note taking app. I think the decision of the kind is whether or not you want other apps to interop with yours