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Zu deren sicherer und rechtskonformer Durchf\u00fchrung ist es oft notwendig, sich von den notwendigen Eigenschaften der Beteiligten zu \u00fcberzeugen. Daf\u00fcr werden digitale Identit\u00e4ten eingesetzt, die Personen und andere Entit\u00e4ten mittels Sammlungen von Attributen repr\u00e4sentieren. Allerdings f\u00fchrt die gro\u00dfe Vielfalt von Verfahren und Methoden f\u00fcr das Identit\u00e4tsmanagement zu hoher Komplexit\u00e4t und Kosten. Als ein vielversprechender Ansatz zur \u00dcberwindung dieser H\u00fcrden erscheint das Paradigma der selbstbestimmten Identit\u00e4t. Es soll eine durchg\u00e4ngige sichere Identifizierung und Authentifizierung von Personen, Organisationen und Objekten erm\u00f6glichen. Daf\u00fcr werden digitale Nachweise (Verifiable Credentials) \u00fcber beliebige Sachverhalte von Herausgebern in einer kryptografisch gesicherten Form bereitgestellt. Die Inhaber dieser Nachweise verwalten diese selbst in digitalen Wallets und k\u00f6nnen sie bei Bedarf an Dritte zum Nachweis von diversen Merkmalen \u00fcbermitteln. Der vorliegende Beitrag gibt einen \u00dcberblick zum aktuellen Stand digitaler Identit\u00e4ten, den ihnen zugrundeliegenden Verfahren sowie den damit verbundenen praktischen Problemen. Darauf aufbauend werden laufende Aktivit\u00e4ten zur Entwicklung einheitlich nutzbarer digitaler Nachweise gegeben, die eine Grundlage f\u00fcr k\u00fcnftige digitale \u00d6kosysteme bilden. 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