The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2021
Filed:
Mar. 16, 2018
Bundesdruckerei Gmbh, Berlin, DE;
Jorg Ruckriemen, Berlin, DE;
Jens Ehreke, Berlin, DE;
BUNDESDRUCKEREI GMBH KOMMANDANTENSTRASSE 18, Berlin, DE;
Abstract
A method for issuing a virtual document by a first computer system of an issuer, includes creating the virtual document; calculating a hash value of the virtual document; sending a signed entry request including the hash value to a blockchain server; receiving the signed entry request by the blockchain server; and executing, by the blockchain server, program instructions of a program module identified by the signed entry request, wherein the execution of the program instructions includes checking the signature of the entry request, using a public cryptographic key of the issuer registered in the blockchain, and, if the signature is valid, generating an additional block of the blockchain for the issue of the virtual document, wherein the generated block includes an entry associated with the program module and including the first hash value.