underdarkGIS’s Twitter Archive—№ 9,507

@AmyRSorensen @UlrikeHuemer @BrigitteLutz "The first blockchain pilot „OGD – Change Protocol and Notarization“ enables independent checks to be made as to whether data records of the city of Vienna existed at a specific time." open.wien.gv.at/site/open-government-data-in-vienna-2/