In a traditional Jewish wedding ceremony, the ketubah is signed by two witnesses and traditionally read out loud under the chuppah between the erusin and nissuin. Friends or distant relatives are invited to witness the ketubah, which is considered an honour; close relatives are prohibited from being witnesses. The witnesses must be halakhically valid witnesses, and so cannot be a blood relative of the couple. In Orthodox Judaism, women are also not considered to be valid witnesses. The ketubah is handed to the bride (or, more commonly, to the bride’s mother) for safekeeping.
These beautiful frameable Ketubah's are courtesy of Cheryl Bell.