Definition: e-Timestamp Verification and Validation Service ABB is an Application Service verifing timestamps used for establishing evidence that a give piece of data existed at a given point in time. An ‘electronic time stamp’ means data in electronic form which binds other data in electronic form to a particular time establishing evidence that the latter data existed at that time. Source: eIDAS - REGULATION (EU) No 910/2014 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 July 2014 on electronic identification and trust services for electronic transactions in the internal market and repealing Directive 1999/93/EC. Source reference: (http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=uriserv%3AOJ.L_.2014.257.01.0073.01.ENG) Example: The following implementation is an example on how this specific Architecture Building Block (ABB) can be instantiated as a Solution Building Block (SBB): OpenSSL timestamp verification - OpenSSL is an open-source tool that can be used to retrieve and verify digital timestamps.(https://wiki.openssl.org/index.php/Manual:Ts(1)) (https://www.digistamp.com/technical/software-alternatives/using-openssl-to-request-timestamps/) eira:iopDimension: Behavioral IoP LOST view: TVA-Trust Enablers [Motivation] eira:iopSaliency: The e-Timestamp Verification and Validation Service ABB  is salient for technical interoperability because it provides the functionalities required for e-timestamp verification and validation service. Identifier: http://data.europa.eu/dr8/E-TimestampVerificationAndValidationApplicationService ABB name: eira:E-TimestampVerificationAndValidationService EIRA concept: eira:ArchitectureBuildingBlock Last modification: 2022-20-01 dct:identifier: http://data.europa.eu/dr8/E-TimestampVerificationAndValidationApplicationService