Question 1

What is decentralized identity?

Accepted Answer

Decentralized identity is the evolution of digital identity models with the management and control of identifier and identity-related data. The decentralization aspect means users can create and manage their digital identity independently of service providers or other centralized identity providers.

Question 2

What is self-sovereign identity (SSI)?

Accepted Answer

While sometimes also called decentralized identity, self-sovereign identity redefines the digital identity from the ground up. The core building blocks are DIDs and VCs. DIDs present user identifiers and, with cryptographic signatures and proofs, serve as the replacement for usernames and passwords. VCs represent all the users' claims, attestations, and other data.

Question 3

What is account abstraction (AA)?

Accepted Answer

Account Abstraction (AA) abstracts EOAs (externally owned accounts) to smart contract wallets (SCWs). SCW allows the programmability of signature validation, support for different cryptographic algorithms, social recovery, and other features. One of the most known standards for AA is EIP-4337.

Question 4

What are soulbound tokens (SBTs)?

Accepted Answer

Soulbound Tokens (SBTs) are non-transferable assets, similar to NFTs, but with the transfer functionality disabled. Thus they are suitable for identity data that shouldn't be sellable. Due to their inability to be transferable, they are bound to the “soul” (account of the user)

Question 5

What are decentralized identifiers (DIDs)?

Accepted Answer

Decentralized Identifiers (DIDs) are globally unique persistent identifiers for any entity without needing a centralized provider. DIDs are described by DID methods, which define the dynamics of DID identifiers and where or how to find the underlying data of DID identifiers. The specification was approved as a W3C Recommendation by W3

Question 6

What are verifiable credentials (VCs)?

Accepted Answer

Verifiable Credentials (VCs) are a standard for trusted data representation. The standard defines how different types of data, such as certificates, can be structured containing digital signatures and metadata. The specification was approved as a W3C Recommendation by W3C.

Vid Keršič

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