Vornberger, JanGoltz, UrsulaMagnor, MarcusAppelrath, Hans-JürgenMatthies, Herbert K.Balke, Wolf-TiloWolf, Lars2018-11-062018-11-062012978-3-88579-602-2https://dl.gi.de/handle/20.500.12116/17831This paper proposes a technique for creating Bitcoin transactions enriched with special “marker addresses”1 to make it possible to easily identify the originating party and allow for special treatment by the recipient. In particular this technique can be used to implement secure zero-confirmation transactions between trusted parties without requiring an additional communication channel besides the Bitcoin network.enText/Conference Paper1617-5468