Self-sovereign identity

With self-sovereign identity (SSI) the individual identity holders can fully create and control their credentials, without being forced to request permission of an intermediary or centralised authority and gives control over how their personal data is shared and used.

Relationship between entities, identities and attributes / identifiers
Decentralized identifiers (DIDs)[1] can be used to enable self-sovereign identities.

The user has a means of generating and controlling unique identifiers as well as some facility to store identity data.[2]

A SSI can be a decentralised identity, but could also be data from a social media account, a history of transactions on an e-commerce site, or attestation from friends or colleagues.

In the centralised identity paradigm a person’s identity is provided by some outside entity. In the decentralised identity paradigm the user is at the centre of the framework and there is no need for third parties to issue and administer an identity.[3]

European Union SSI

The European Union is creating an eIDAS compatible European Self-Sovereign Identity Framework (ESSIF). The ESSIF makes use of decentralized identifiers (DIDs) and the European Blockchain Services Infrastructure (EBSI).[4][5]

References
  1. "Decentralized Identifiers (DIDs)". World Wide Web Consortium. Retrieved 15 July 2020.
  2. "Blockchain and digital identity" (PDF). eublockchainforum.eu. 2 May 2019. Retrieved 16 June 2020.
  3. "eIDAS supported self-sovereign identity" (PDF). European Commission. May 2019. Retrieved 16 June 2020.
  4. "Understanding the European Self-Sovereign Identity Framework (ESSIF)". ssimeetup.org. 7 July 2019. Retrieved 22 June 2020.
  5. "European Blockchain Services Infrastructure (EBSI)". European Commission. Retrieved 1 July 2020.

See also
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