nostr:npub108pv4cg5ag52nq082kd5leu9ffrn2gdg6g4xdwatn73y36uzplmq9uyev6 Luke "Vim Diesel" Smith has started a CSAM-Buster project that's supposed to do what it says on the title, and it's using Nostr for has distribution. Were you involved by any chance?

https://gitgud.io/lukesmithxyz/csam-buster/-/blob/master/spec/spec.md