Patent | Date |
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Verifiable Splitting of Single-Instance Data Using Sharded Blockchain App 20220284129 - BULDAS; Ahto ;   et al. | 2022-09-08 |
Composite digital signatures Grant 11,251,970 - Buldas , et al. February 15, 2 | 2022-02-15 |
Verifiable Transfer of Data Using Sharded Blockchain App 20210365943 - BULDAS; Ahto ;   et al. | 2021-11-25 |
Verifiably Unique Transfer of Exclusive Control of Data Units App 20210279727 - BULDAS; Ahto ;   et al. | 2021-09-09 |
Blockchain-assisted hash-based data signature system and method Grant 11,057,187 - Buldas , et al. July 6, 2 | 2021-07-06 |
Blockchain-Assisted Hash-Based Data Signature System and Method App 20200052886 - BULDAS; Ahto ;   et al. | 2020-02-13 |
Composite Digital Signatures App 20200044861 - Buldas; Ahto ;   et al. | 2020-02-06 |
Blockchain-supported, fail-safe synchronization in a data authentication infrastructure Grant 10,103,893 - Kroonmaa , et al. October 16, 2 | 2018-10-16 |
Blockchain-supported, Fail-safe Synchronization In A Data Authentication Infrastructure App 20180198626 - KROONMAA; ANDRES ;   et al. | 2018-07-12 |
Blockchain-supported, Hash Tree-based Digital Signature Infrastructure App 20180152442 - BULDAS; Ahto ;   et al. | 2018-05-31 |
Redundant fail-safe synchronization in a data authentication infrastructure Grant 9,911,007 - Kroonmaa , et al. March 6, 2 | 2018-03-06 |
Document verification with distributed calendar infrastructure Grant 9,876,779 - Buldas , et al. January 23, 2 | 2018-01-23 |
System and method for sequential data signatures Grant 9,614,682 - Buldas , et al. April 4, 2 | 2017-04-04 |
Document verification with ID augmentation Grant 9,473,306 - Buldas , et al. October 18, 2 | 2016-10-18 |
Redundant Fail-Safe Synchronization in a Data Authentication Infrastructure App 20160253523 - KROONMAA; ANDRES ;   et al. | 2016-09-01 |
System and method for field-verifiable record authentication Grant 9,268,969 - Gault , et al. February 23, 2 | 2016-02-23 |
Document Verification With Distributed Calendar Infrastructure App 20160028721 - BULDAS; Ahto ;   et al. | 2016-01-28 |
Non-deterministic time systems and methods Grant 9,178,708 - Gault , et al. November 3, 2 | 2015-11-03 |
System and Method for Sequential Data Signatures App 20150295720 - BULDAS; Ahto ;   et al. | 2015-10-15 |
Document verification with distributed calendar infrastructure Grant 9,122,846 - Buldas , et al. September 1, 2 | 2015-09-01 |
Non-deterministic Time Systems And Methods App 20150156026 - GAULT; Michael ;   et al. | 2015-06-04 |
System And Method For Field-verifiable Record Authentication App 20150052615 - GAULT; Michael ;   et al. | 2015-02-19 |
Document Verification With Id Augmentation App 20150039893 - BULDAS; AHTO ;   et al. | 2015-02-05 |
System and method for generating keyless digital multi-signatures Grant 8,874,921 - Buldas , et al. October 28, 2 | 2014-10-28 |
Document Verification With Distributed Calendar Infrastructure App 20140282863 - BULDAS; Ahto ;   et al. | 2014-09-18 |
Verification System and Method with Extra Security for Lower-Entropy Input Records App 20140245020 - BULDAS; AHTO ;   et al. | 2014-08-28 |
Document verification with distributed calendar infrastructure Grant 8,719,576 - Buldas , et al. May 6, 2 | 2014-05-06 |
Document Verification With Distributed Calendar Infrastructure App 20130276058 - Buldas; Ahto ;   et al. | 2013-10-17 |
System and method for generating a digital certificate Grant 8,347,372 - Saarepera , et al. January 1, 2 | 2013-01-01 |
System And Method For Generating Keyless Digital Multi-signatures App 20120324229 - Buldas; Ahto ;   et al. | 2012-12-20 |
System and method for generating a digital certificate Grant 8,312,528 - Saarepera , et al. November 13, 2 | 2012-11-13 |
System And Method For Generating A Digital Certificate App 20100199087 - Saarepera; Mart ;   et al. | 2010-08-05 |
System And Method For Generating A Digital Certificate App 20100199342 - Saarepera; Mart ;   et al. | 2010-08-05 |
System and method for generating a digital certificate Grant 7,698,557 - Saarepera , et al. April 13, 2 | 2010-04-13 |
System and method for generating a digital certificate App 20050138361 - Saarepera, Mart ;   et al. | 2005-06-23 |
System and method for renewing and extending digitally signed certificates App 20040193872 - Saarepera, Mart ;   et al. | 2004-09-30 |
Method and apparatus for validating a digital signature App 20010032314 - Ansper, Arne ;   et al. | 2001-10-18 |