File your claim in insolvency proceedings. Your claim will be determined and entered into a schedule. This is the only way you can receive money from the remaining assets (the insolvency estate).
Since October 6, 2012, the Hamburg Transparency Act, which replaces the Hamburg Freedom of Information Act, grants everyone free access to official information.
You want to buy a plot of land. Where can you get information as to whether a building encumbrance has been registered for the property and which building encumbrance it is?
The building encumbrance information or the copy of the building encumbrance register informs you whether a property is benefited or encumbered by public law obligations.
In the reading room of the Hamburg State Archives you can view documents from ten centuries that provide information about the history of Hamburg, your own family history or legal matters.