Assuming the latest event is what's valid is how it's handled in nostr:nprofile1qqs2xugc5jyguqkj36rk0syv4tmnkjdtmtperttl7x9rqjy3ustdcvcpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsq3camnwvaz7tmjv4kxz7fwd46hg6tw09mkzmrvv46zucm0d5yx7efd. You could also set the "d" tag to something you can validate was created by your client and filter for only those wallet events. 

 Thanks! I es thinking about the case where to wallet is not generated by the app itself, so it wouldn’t know the right “d” tag. 

I think it would be good if those tags were chosen by the user and not completely random. In that case a UI could pop up a dialogue for the user to choose the correct wallet