@BlackAzizAnansi @ianrogers I haven’t seen any discussion about where this is implemented. If it’s in the bsky client app, then any of the alt clients should work fine. I do t think the relay sees the client address, so I doubt it’s implemented there. I guess they could also block at the PDS, but the decentralized answer is to host your own PDS.
I wonder if the blacksky folks have discussed their approach.