Schema unique stamp (OID, MD5?)

Dear friends,

Do you see an existing way to stamp an existing schema with a unique value
(OID?). This would be very usefull for pgAdmin2 when working in development
teams to decide whether a schema should be reloaded or not.

Using PLbash, this would look like :
"md5sum < pg_dump --schema-only database_name"
Are there plans to implement such a feature server-side in C++?

Best regards,
Jean-Michel POURE