A first look at identity management schemes on the blockchain
Open accessAbstract
The emergence of distributed ledger technology (DLT) based on a blockchain data structure has given rise to new approaches to identity management that aim to upend dominant approaches to providing and consuming digital identities. These new approaches to identity management (IdM) propose to enhance de-centralization, transparency, and user control in transactions that involve identity information; however, given the historical challenge to design IdM, can these new DLT-based schemes deliver on their lofty goals? We introduce the emerging landscape of DLT-based IdM and evaluate three representative proposals—uPort, ShoCard, and Sovrin—using the analytic lens of a seminal framework that characterizes the nature of successful IdM schemes.
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A DID by itself is only useful for the purpose of authentication, and becomes particularly useful when used in combination with verifiable claims or credentials.
“ADIDbyitself is only useful for the purpose of authentication. It becomes particularly useful when used in combination with verifiable claims or credentials-another W3C standard that can be used to make any number of attestations about a DID subject (Dunphy and Petitcolas, 2018).”
From Self-Sovereign Identity in a Globalized World: Credentials-Based Identity Systems as a Driver for Economic Inclusion (2020) · cites this paper as Dunphy and Petitcolas, 2018
Section 4.1 Design describes a DID as containing an identifier and public key, while section 4.2 Analysis describes Sovrin users sharing attribute credentials with relying parties. Section 6.2 also discusses attestations of identity attributes. The paper does not say that a DID alone is useful only for authentication, nor does it identify verifiable claims or credentials as a W3C standard. Page numbers are unavailable in our copy. (LLM, conf=0.82)
Experimental — accuracy not yet measuredDLT acts as a replacement for centralized registration authority in traditional identity management systems, where the pairing of identifier and authentication method is maintained.
“It acts as a replacement for centralized registration authority in traditional identity management systems, where the pairing of identifier and authentication method is maintained [18].”
From Decentralized and Self-Sovereign Identity: Systematic Mapping Study (2021) · cites this paper as [18]
Section 2, “Identity management on the blockchain?” (page not provided), describes decentralized identifier–attribute mappings and a scheme that binds public keys to identifiers. But §6.1 says the schemes studied reshape the roles of central authorities and intermediaries rather than eliminate them. The paper therefore does not support the unqualified claim that DLT replaces a centralized registration authority. (LLM, conf=0.84)
Experimental — accuracy not yet measuredDIDs and VCs are directly managed and controlled by the identity holder, stored in user-controlled off-chain storage, and can be presented to any relying party when needed.
“DIDs and VCs are directly managed and controlled by the identity holder.They are stored in the user-controlled off-chain storage and can be presented to any relying party when needed [18].”
From Decentralized and Self-Sovereign Identity: Systematic Mapping Study (2021) · cites this paper as [18]
Section 4.1 (page unavailable) says Sovrin DIDs are managed by the user or an appointed guardian, while identifiers, keys, and endpoint addresses are stored on the ledger. Section 4.2 (page unavailable) says users choose which attribute credentials to share with relying parties and generally prefer phone or agent storage, but may store attributes on the ledger. The claim overstates the paper by saying both DIDs and credentials are directly holder-controlled and stored off-chain. (LLM, conf=0.88)
Experimental — accuracy not yet measuredIn information sharing, traditional trusted third parties (TTPs) that use certificates to provide non-repudiation services are being replaced with distributed ledger or blockchain technology (DLT).
“In information sharing, traditional trusted third parties (TTPs) that use certificates to provide non-repudiation services, are being replaced with distributed ledger or blockchain technology (DLT) (Dunphy & Petitcolas, 2018;Ølnes, Ubacht, & Janssen, 2017).”
From Data governance: Organizing data for trustworthy Artificial Intelligence (2020) · cites this paper as Dunphy & Petitcolas, 2018
The Introduction describes DLT as operating without a central authority to validate ledger transactions, and §6.2 discusses sharing identity attributes certified by third parties. But §6.1 says the schemes reshape rather than eradicate intermediaries. The paper does not establish that certificate-based trusted third parties providing non-repudiation services are being replaced in information sharing. (LLM, conf=0.84)
Experimental — accuracy not yet measuredSSI is user-centric, allowing users to generate and manage unique decentralized identifiers (DID) independent of any third party and acquire identity attributes from third-party issuers.
“Therefore SSI is user-centric [18], allowing users to generate and manage unique decentralized identifiers (DID) independent of any third party [19] and acquire identity attributes from third-party issuers.”
From Decentralized and Self-Sovereign Identity: Systematic Mapping Study (2021) · cites this paper as [18]
Distributed ledger technology has been investigated to manage user's identity, metadata, share and maintain logs of medical records, and patient key management.
“distributed ledger technology, popularly known as Blockchain, has also been investigated to manage user's identity [17], metadata [18], share, and maintain logs of medical records [19] and patient key management [20][21].”
From Blockchain leveraged decentralized IoT ehealth framework (2020) · cites this paper as [17]
Replacing actual information with hash keys that point towards the location of data is a possible solution to the challenge of citizen identity data management in blockchain for governance.
“Actual information is replaced by hash keys that point towards the location of data [132]”
From Security Aspects of Blockchain Technology Intended for Industrial Applications (2021) · cites this paper as [132]
Citizen identity data management is a challenge for blockchain technology in governance applications.
“Citizen identity data management [132]”
From Security Aspects of Blockchain Technology Intended for Industrial Applications (2021) · cites this paper as [132]
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“It becomes particularly useful when used in combination with verifiable claims or credentials—another W3C standard that can be used to make any number of attestations about a DID subject (Dunphy and Petitcolas, 2018).”
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- Authors
- Dunphy, P., & Petitcolas, F. A. P.
- Affiliations
- OneSpan Innovation Centre
- Venue
- IEEE Security & Privacy
- Published
- 2018-07
- Volume
- 16
- Issue
- 4
- Pages
- 20-29
- ISSN
- 1540-7993 (ISSN-L)
- 1558-4046
- OpenAlex
- W2783837064
- Cited by
- 416
- References
- 5
- Citations by year
- 2026: 13 · 2025: 41 · 2024: 46 · 2023: 54 · 2022: 55 · 2021: 71 · 2020: 78 · 2019: 50 · 2018: 8
- FWCI
- 83.46
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Licence
- Locations
- IEEE Security & Privacy (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Computer Science › Information Systems › Blockchain Technology Applications and Security
- Physical Sciences › Computer Science › Information Systems › User Authentication and Security Systems
- Physical Sciences › Computer Science › Information Systems › Blockchain Technology in Education and Learning
- Keywords
- identity management, blockchain, distributed ledger technology, digital identity, decentralization (distributed systems), user control, transparency
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