A method for reading one or more user attributes from an ID token, using an ID-provider computer system of an ID-provider service and providing a digital verifiable credential with the read user attributes in a digital credential wallet of a mobile terminal using an issuer computer system of an issuer service of an SSI infrastructure, wherein the user attributes of a user are stored in a protected memory area of a memory of the ID token, wherein the SSI infrastructure comprises a blockchain in which a data schema for the digital verifiable credential and a public cryptographic key (318, 404) associated with the issuer service are stored, wherein the data schema is used as a template for verifying the digital verifiable credential, wherein the public cryptographic key (318, 404) of the issuer service is used as a signature verification key for verifying a signature of the digital verifiable credential, which is created with a private cryptographic key of the issuer service associated with the signature verification key as the signature key, wherein the method comprises: • sending an issuing request for issuing the digital verifiable credential from the mobile terminal via a network to the issuer computer system to initiate reading of the user attributes by the ID-provider computer system from the ID token, • enabling reading access of the ID-provider computer system to the user attributes in the ID token via the mobile terminal and the network for forwarding the read user attributes to the issuer computer system, • receiving the digital verifiable credential issued by the issuer service by the digital credential wallet of the mobile terminal of the issuer computer system via the network, wherein the digital verifiable credential is established in accordance with the data schema provided in the blockchain, comprises the read user attributes and is signed using the signature key of the issuer service, • storing the received digital verifiable credential in the credential wallet of the mobile terminal. wherein the user attributes of a user are stored in a protected memory area of a memory of the ID token, wherein the SSI infrastructure comprises a blockchain in which a data schema for the digital verifiable credential and a public cryptographic key (318, 404) associated with the issuer service are stored, wherein the data schema is used as a template for verifying the digital verifiable credential, wherein the public cryptographic key (318, 404) of the issuer service is used as a signature verification key for verifying a signature of the digital verifiable credential, which is created with a private cryptographic key of the issuer service associated with the signature verification key as the signature key, wherein the method comprises: • sending an issuing request for issuing the digital verifiable credential from the mobile terminal via a network to the issuer computer system to initiate reading of the user attributes by the ID-provider computer system from the ID token, • enabling reading access of the ID-provider computer system to the user attributes in the ID token via the mobile terminal and the network for forwarding the read user attributes to the issuer computer system, • receiving the digital verifiable credential issued by the issuer service by the digital credential wallet of the mobile terminal of the issuer computer system via the network, wherein the digital verifiable credential is established in accordance with the data schema provided in the blockchain, comprises the read user attributes and is signed using the signature key of the issuer service, • storing the received digital verifiable credential in the credential wallet of the mobile terminal. • sending an issuing request for issuing the digital verifiable credential from the mobile terminal via a network to the issuer computer system to initiate reading of the user attributes by the ID-provider computer system from the ID token, • enabling reading access of the ID-provider computer system to the user attributes in the ID token via the mobile terminal and the network for forwarding the read user attributes to the issuer computer system, • receiving the digital verifiable credential issued by the issuer service by the digital credential wallet of the mobile terminal of the issuer computer system via the network, wherein the digital verifiable credential is established in accordance with the data schema provided in the blockchain, comprises the read user attributes and is signed using the signature key of the issuer service, • storing the received digital verifiable credential in the credential wallet of the mobile terminal.