{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T11:24:57Z","timestamp":1761218697798,"version":"3.44.0"},"reference-count":52,"publisher":"Association for Computing Machinery (ACM)","issue":"3","content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["Distrib. Ledger Technol."],"published-print":{"date-parts":[[2025,9,30]]},"abstract":"<jats:p>Blockchain technology advancements have made it feasible to build secure, decentralized networks with numerous use cases in various industries, including banking, education, government, and health. In higher education, there is a significant need for certification and credential verification through digital means, as fake certificates are common in the labor market. The BlockAdemiC system presented in this article falls into solutions for such issues. BlockAdemiC is a blockchain-based educational platform that makes use of cutting-edge features in blockchain technology to ensure the required degree of trust both at the individual user and institutional level. Specifically, BlockAdemiC represents a digital distributed security system for the certification and verification of educational activities, degrees, and skills in higher education and lifelong learning, producing an immutable educational passport. Information distributed using blockchain enhances trust in the exchange of information between institutions, agencies, companies, and alumni and introduces a trustworthy mechanism for content verification and authentication. For self-sovereign identity and identification management, the system utilizes distributed ledger technology via Hyperledger frameworks and offers users authority over their identities and credentials, removing the need for the involvement of central authorities to validate and verify user identities. Smart contracts are additionally supported, which provide the connection for storing student activities that take place on educational platforms on the EOSIO blockchain. The BlockAdemiC was evaluated via a technological feasibility study focusing on the system\u2019s performance. The initial findings show that the system can efficiently process a high load of queries in parallel similar to the real-world situation and can be further considered for large-scale deployment and use.<\/jats:p>","DOI":"10.1145\/3703463","type":"journal-article","created":{"date-parts":[[2024,11,14]],"date-time":"2024-11-14T09:43:19Z","timestamp":1731577399000},"page":"1-19","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["BlockAdemiC: A Digital Distributed Verification System for Educational Activities in Higher Education"],"prefix":"10.1145","volume":"4","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-9734-4363","authenticated-orcid":false,"given":"Avraam","family":"Tepelidis","sequence":"first","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology\u2014Hellas, Thessaloniki, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1006-0467","authenticated-orcid":false,"given":"Eirini E.","family":"Mitsopoulou","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology\u2014Hellas, Thessaloniki, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-2797-6648","authenticated-orcid":false,"given":"Athanasios T.","family":"Patenidis","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology\u2014Hellas, Thessaloniki, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2497-7556","authenticated-orcid":false,"given":"Kristina","family":"Livitckaia","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology\u2014Hellas, Thessaloniki, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6381-8326","authenticated-orcid":false,"given":"Konstantinos","family":"Votis","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology\u2014Hellas, Thessaloniki, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6915-6722","authenticated-orcid":false,"given":"Dimitrios","family":"Tzovaras","sequence":"additional","affiliation":[{"name":"Information Technologies Institute, Centre for Research and Technology\u2014Hellas, Thessaloniki, Greece"}]}],"member":"320","published-online":{"date-parts":[[2025,8,22]]},"reference":[{"key":"e_1_3_1_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2019.2902501"},{"key":"e_1_3_1_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.simpa.2021.100101"},{"key":"e_1_3_1_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/bs.adcom.2020.08.016"},{"key":"e_1_3_1_5_2","doi-asserted-by":"publisher","DOI":"10.3390\/app9122400"},{"key":"e_1_3_1_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/ICCISci.2019.8716424"},{"key":"e_1_3_1_7_2","doi-asserted-by":"publisher","unstructured":"Saifedean Ammous. 2016. 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