{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T20:09:56Z","timestamp":1785960596152,"version":"3.56.0"},"reference-count":31,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T00:00:00Z","timestamp":1709164800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Information &amp; communications Technology 492 Planning &amp; Evaluation(IITP) grant funded by the Korea government(MSIT)","award":["RS-2023-00261068"],"award-info":[{"award-number":["RS-2023-00261068"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Ensuring the security and usability of electronic health records (EHRs) is important in health information exchange (HIE) systems that handle healthcare records. This study addressed the need to balance privacy preserving and data usability in blockchain-based HIE systems. We propose a searchable blockchain-based HIE system that enhances privacy preserving while improving data usability. The proposed methodology includes users collecting healthcare information (HI) from various Internet of Medical Things (IoMT) devices and compiling this information into EHR blocks for sharing on a blockchain network. This approach allows participants to search and utilize specific health data within the blockchain effectively. The results demonstrate that the proposed system mitigates the issues of traditional HIE systems by providing secure and user-friendly access to EHRs. The proposed searchable blockchain-based HIE system resolves the trade-off dilemma in HIE by achieving a balance between security and the data usability of EHRs.<\/jats:p>","DOI":"10.3390\/s24051582","type":"journal-article","created":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T08:13:44Z","timestamp":1709194424000},"page":"1582","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Searchable Blockchain-Based Healthcare Information Exchange System to Enhance Privacy Preserving and Data Usability"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9021-7008","authenticated-orcid":false,"given":"Sejong","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Computer Science and Engineering, Major in Bio-Artificial Intelligence, Hanyang University, Ansan 15588, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0978-3657","authenticated-orcid":false,"given":"Yushin","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, Major in Bio-Artificial Intelligence, Hanyang University, Ansan 15588, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1847-6088","authenticated-orcid":false,"given":"Sunghyun","family":"Cho","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, Hanyang University ERICA, Ansan 15588, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/j.hlpt.2016.08.002","article-title":"A review of PHR, EMR and EHR integration: A more personalized healthcare and public health policy","volume":"6","author":"Heart","year":"2017","journal-title":"Health Policy Technol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2251","DOI":"10.1093\/ajhp\/58.23.2251","article-title":"ASHP national survey of pharmacy practice in hospital settings: Prescribing and transcribing\u20142001","volume":"58","author":"Pedersen","year":"2001","journal-title":"Am. J. Health-Syst. Pharm."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1038\/s41591-021-01614-0","article-title":"AI in health and medicine","volume":"28","author":"Rajpurkar","year":"2022","journal-title":"Nat. Med."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Vishnu, S., Ramson, S.J., and Jegan, R. (2020, January 5\u20136). Internet of medical things (IoMT)\u2014An overview. Proceedings of the 2020 5th International Conference on Devices, Circuits and Systems (ICDCS), Coimbatore, India.","DOI":"10.1109\/ICDCS48716.2020.243558"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"541","DOI":"10.1016\/j.jbi.2012.12.003","article-title":"Security and privacy in electronic health records: A systematic literature review","volume":"46","author":"Lozoya","year":"2013","journal-title":"J. Biomed. Inform."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1016\/j.glohj.2019.07.001","article-title":"Smart healthcare: Making medical care more intelligent","volume":"3","author":"Tian","year":"2019","journal-title":"Glob. Health J."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1038\/s41591-018-0272-7","article-title":"Privacy in the age of medical big data","volume":"25","author":"Price","year":"2019","journal-title":"Nat. Med."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1259","DOI":"10.1093\/jamia\/ocy035","article-title":"The benefits of health information exchange: An updated systematic review","volume":"25","author":"Menachemi","year":"2018","journal-title":"J. Am. Med. Inform. Assoc."},{"key":"ref_9","unstructured":"Dixon, B.E., and Cusack, C.M. (2023). Health Information Exchange, Elsevier."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Hatzivasilis, G., Soultatos, O., Ioannidis, S., Verikoukis, C., Demetriou, G., and Tsatsoulis, C. (2019, January 29\u201331). Review of Security and Privacy for the Internet of Medical Things (IoMT). Proceedings of the 2019 15th International Conference on Distributed Computing in Sensor Systems (DCOSS), Santorini, Greece.","DOI":"10.1109\/DCOSS.2019.00091"},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Gong, T., Huang, H., Li, P., Zhang, K., and Jiang, H. (2015, January 12\u201314). A Medical Healthcare System for Privacy Protection Based on IoT. Proceedings of the 2015 Seventh International Symposium on Parallel Architectures, Algorithms and Programming (PAAP), Nanjing, China.","DOI":"10.1109\/PAAP.2015.48"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"2169","DOI":"10.1109\/JBHI.2020.2993072","article-title":"A Patient-Centric Health Information Exchange Framework Using Blockchain Technology","volume":"24","author":"Zhuang","year":"2020","journal-title":"IEEE J. Biomed. Health Inform."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"73","DOI":"10.1016\/j.cose.2017.02.008","article-title":"A novel access control protocol using proxy signatures for cloud-based health information exchange","volume":"67","author":"Chandrasekhar","year":"2017","journal-title":"Comput. Secur."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Srivastava, G., Parizi, R.M., Dehghantanha, A., and Choo, K.K.R. (2019, January 12\u201315). Data sharing and privacy for patient iot devices using blockchain. Proceedings of the International Conference on Smart City and Informatization, Guangzhou, China.","DOI":"10.1007\/978-981-15-1301-5_27"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"e14184","DOI":"10.2196\/14184","article-title":"The Potential of Blockchain Technology for Health Information Exchange: Experimental Study from Patients\u2019 Perspectives","volume":"21","author":"Esmaeilzadeh","year":"2019","journal-title":"J. Med. Internet Res."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"164908","DOI":"10.1109\/ACCESS.2019.2950872","article-title":"Privacy-Preserving Solutions for Blockchain: Review and Challenges","volume":"7","author":"Canovas","year":"2019","journal-title":"IEEE Access"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"420","DOI":"10.1016\/j.future.2019.01.018","article-title":"Blockchain based searchable encryption for electronic health record sharing","volume":"95","author":"Chen","year":"2019","journal-title":"Future Gener. Comput. Syst."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"7195","DOI":"10.1109\/ACCESS.2019.2959044","article-title":"Electronic Health Record Sharing Scheme with Searchable Attribute-Based Encryption on Blockchain","volume":"8","author":"Niu","year":"2020","journal-title":"IEEE Access"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2755","DOI":"10.1109\/TSC.2021.3078119","article-title":"EHRChain: A Blockchain-Based EHR System Using Attribute-Based and Homomorphic Cryptosystem","volume":"15","author":"Li","year":"2022","journal-title":"IEEE Trans. Serv. Comput."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Han, J., Li, Z., Liu, J., Wang, H., Xian, M., Zhang, Y., and Chen, Y. (2022). Attribute-Based Access Control Meets Blockchain-Enabled Searchable Encryption: A Flexible and Privacy-Preserving Framework for Multi-User Search. Electronics, 11.","DOI":"10.3390\/electronics11162536"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Ali, A., Al-rimy, B.A.S., Alsubaei, F.S., Almazroi, A.A., and Almazroi, A.A. (2023). HealthLock: Blockchain-Based Privacy Preservation Using Homomorphic Encryption in Internet of Things Healthcare Applications. Sensors, 23.","DOI":"10.3390\/s23156762"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Thantharate, P., and Thantharate, A. (2023). ZeroTrustBlock: Enhancing Security, Privacy, and Interoperability of Sensitive Data through ZeroTrust Permissioned Blockchain. Big Data Cogn. Comput., 7.","DOI":"10.3390\/bdcc7040165"},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Heng, Y., Armknecht, F., Chen, Y., and Schnell, R. (2022). On the effectiveness of graph matching attacks against privacy-preserving record linkage. PLoS ONE, 17.","DOI":"10.1371\/journal.pone.0267893"},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Vidanage, A., Ranbaduge, T., Christen, P., and Schnell, R. (2019, January 8\u201311). Efficient pattern mining based cryptanalysis for privacy-preserving record linkage. Proceedings of the 2019 IEEE 35th International Conference on Data Engineering (ICDE), Macao, China.","DOI":"10.1109\/ICDE.2019.00176"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Vidanage, A., Christen, P., Ranbaduge, T., and Schnell, R. (2020, January 19\u201323). A graph matching attack on privacy-preserving record linkage. Proceedings of the 29th ACM International Conference on Information & Knowledge Management, Virtual Event, Ireland.","DOI":"10.1145\/3340531.3411931"},{"key":"ref_26","unstructured":"Paillier, P. (1999, January 2\u20136). Public-key cryptosystems based on composite degree residuosity classes. Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques, Prague, Czech Republic."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Hussien, H.M., Yasin, S.M., Udzir, N.I., and Ninggal, M.I.H. (2021). Blockchain-based access control scheme for secure shared personal health records over decentralised storage. Sensors, 21.","DOI":"10.3390\/s21072462"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"e29108","DOI":"10.2196\/29108","article-title":"Privacy Preservation in Patient Information Exchange Systems Based on Blockchain: System Design Study","volume":"24","author":"Kim","year":"2022","journal-title":"J. Med. Internet Res."},{"key":"ref_29","unstructured":"Cachin, C. (2016, January 25). Architecture of the hyperledger blockchain fabric. Proceedings of the Workshop on Distributed Cryptocurrencies and Consensus Ledgers, Chicago, IL, USA."},{"key":"ref_30","unstructured":"(2022, February 17). Apache CouchDB. Available online: http:\/\/couchdb.apache.org\/."},{"key":"ref_31","unstructured":"(2023, July 12). Synthea\u2019s COVID-19 Patient Synthetic Data. Available online: https:\/\/synthea.mitre.org\/."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/24\/5\/1582\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T14:07:14Z","timestamp":1760105234000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/24\/5\/1582"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,2,29]]},"references-count":31,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2024,3]]}},"alternative-id":["s24051582"],"URL":"https:\/\/doi.org\/10.3390\/s24051582","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,2,29]]}}}