right below that the docs also say that this hash is not persisted, only cached in memory and mapped to a UUIDv4. The UUIDv4 is what persists between sessions.

> The IP address and User-Agent are never stored to the database or disk, and there is no conceivable way to trace the random UUID back to this. > > It’s only stored in memory, which is needed anyway for basic networking to work.

I can't say whether that is GPDR compliant but it's definitely not storing the hash