Stamp defines an official seal of approval from a third party like a governmental agency or intermediary and should thus be included in any official envelopes.

Schema ID

https://gobl.org/draft-0/head/stamp

Properties

TitlePropertyTypeReq.Description
Providerprvcbc.KeytrueIdentity of the agency used to create the stamp usually defined by each region.
ValuevalstringtrueThe serialized stamp value generated for or by the external agency