{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T10:02:05Z","timestamp":1789639325006,"version":"4.0.0"},"reference-count":23,"publisher":"Wiley","issue":"18","license":[{"start":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T00:00:00Z","timestamp":1788307200000},"content-version":"vor","delay-in-days":1,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["62372245"],"award-info":[{"award-number":["62372245"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Concurrency and Computation"],"published-print":{"date-parts":[[2026,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    In a document approval system, multiple signers must approve a document in strict chronological order. We propose a blockchain\u2010based document approval system that integrates a dynamic identity\u2010based ordered signature (DIBOS) scheme built on Sakai's identity\u2010based signature. The DIBOS scheme supports two critical real\u2010world features: (i)\n                    <jats:italic>dynamic signer updates<\/jats:italic>\n                    (insertion, deletion, or replacement of signers mid\u2010approval while preserving prior signature validity) and (ii)\n                    <jats:italic>timeout\u2010skip with backup signers<\/jats:italic>\n                    (automatic skipping of unresponsive signers with immutable audit logging). We formalize a strengthened\n                    <jats:italic>Order\u2010Unforgeability with Skip<\/jats:italic>\n                    (OUf\u2010S) security model and prove our scheme secure under it. Three smart contracts handle signer registration, document request delivery, and batch verification. We implement the off\u2010chain signing on both Intel X64 and ARM64 platforms; dynamic operations add less than 12% overhead, making the system suitable for resource\u2010constrained IoT devices. A full cost analysis on the Ethereum Goerli testnet demonstrates the practicality of the approach.\n                  <\/jats:p>","DOI":"10.1002\/cpe.70937","type":"journal-article","created":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T03:20:21Z","timestamp":1788405621000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["DIBOS: Dynamic Identity\u2010Based Ordered Signatures With Timeout\u2010Skip for Blockchain Document Approval"],"prefix":"10.1002","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-1117-4228","authenticated-orcid":false,"given":"Zhanlin","family":"Wang","sequence":"first","affiliation":[{"name":"School of Computer Sciences Nanjing University of Posts and Telecommunications  Nanjing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ping","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Computer Sciences Nanjing University of Posts and Telecommunications  Nanjing China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,2]]},"reference":[{"key":"e_1_2_11_2_1","first-page":"21","volume-title":"Proceedings of the ACM WiSec","author":"Liu J. 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