its sources remain unclear because it has insufficient inline citations . please help to improve this article by introducing more precise citations . november 2015 learn how and when to remove this template message guardtime industry software founded 2007 key people mike gault ceo matt johnson cto number of employees 100 1 website guardtime.com guardtime is a software security company . it was founded in 2007 in estonia and is headquartered in amsterdam . the company developed a digital signature system based on blockchain technology . in 2015 the company partnered with ericsson on a cloud computing project . 2 3 4 5 6 7 8 9 10 11 darpa awarded a contract to galois to do a formal verification of software by guardtime . references edit guardtime who we are . for agencies worried about data manipulation help is on the way defense systems . defensesystems.com . tim greene 21 may 2015 . new protocol from guardtime hopes to unseat rsa for authentication digital signatures . network world . ericsson and guardtime create secure cloud and big data . yahoo . retrieved 10 april 2015 . ericsson guardtime unveil data centric security portfolio . 3 march 2015 . retrieved 10 april 2015 . ewing adam sep 3 2014 . ericsson teams with guardtime in 69 billion data safety market . bloomberg . retrieved 10 april 2015 . why guardtime believes it will replace rsa security standard . eweek.com . matthew sorell 5 october 2015 . what australia can learn about e government from estonia . the conversation . storage firm guardtime relies on maths for transparent data security . computerweekly . data integrity verification startup guardtime raises 8 million . business insider . 27 may 2010 . kalev aasmae . the estonian cryptography startup that wants to be the qualcomm of data security . zdnet . external links edit official website retrieved from https en.wikipedia.org w index.php title guardtime & oldid 743970740 categories companies of estoniablockchainshidden categories articles lacking in text citations from november 2015all articles lacking in text citations navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 12 october 2016 at 09 13 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view