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As a critical Internet infrastructure, DNS is structured as a tree\u2010like hierarchy with single root zone authority at the top, which puts the operation of DNS at risk from single point of failure. The current root zone management is lack of transparency and accountability, since only the root zone file is published as the final outcome of operations inside the root zone authority. Towards distributed root zone operation in DNS, this paper presents a blockchain\u2010based root operation architecture\u2014RootChain, composed of multiple root servers. On the basis of maintaining the single root authority for top\u2010level domain (TLD), RootChain decentralizes TLD data publication by empowering delegated TLD authorities to publish authenticated data directly. The transparency and accountability of root zone operation are attained by smart\u2010contracting the whole life cycle of TLD operation and logging all operations on the chain. RootChain is transparent to recursive\/stub resolver and DNS\/DNSSEC\u2010compatible. A proof\u2010of\u2010concept prototype of RootChain has been implemented with Hyperledger Fabric and evaluated by experiments.<\/jats:p>","DOI":"10.1155\/2021\/6620236","type":"journal-article","created":{"date-parts":[[2021,2,9]],"date-time":"2021-02-09T03:52:26Z","timestamp":1612842746000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Blockchain\u2010Based DNS Root Zone Management Decentralization for Internet of Things"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2040-5059","authenticated-orcid":false,"given":"Yu","family":"Zhang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8720-3016","authenticated-orcid":false,"given":"Wenfeng","family":"Liu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1803-1492","authenticated-orcid":false,"given":"Zhongda","family":"Xia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3419-4942","authenticated-orcid":false,"given":"Zhongze","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9029-5882","authenticated-orcid":false,"given":"Lu","family":"Liu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weizhe","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongli","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Binxing","family":"Fang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,2,8]]},"reference":[{"key":"e_1_2_14_1_2","unstructured":"LoiblA.andNaabJ. 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