Fast work by nostr:nprofile1qy88wumn8ghj7mn0wvhxcmmv9uq36amnwvaz7tmwdaehgu3wvf5hgcm0d9hx2u3wwdhkx6tpdshsqgpw8vcwuzp9nhx7av0pkctlayxgultryc6flkl0p0w35ujfkhv54urt0dst who added this within 5 hours of receiving my suggestion. https://blossom.primal.net/295b07dcbed266df63db67a24372a060d34dc34468ea99db...

I don't quite understand it. Where in the transaction are we recording this hash and is this somehow only useful for sending a custom string to the hardware wallet to present to the user from the online wallet or it is storing the message on the blockchain too (arbitrary data)?