Anonymous credentials / DID
Coconut: Threshold Issuance Selective Disclosure Credentials with Applications to Distributed Ledgers
Decode
An implementation proposal for a Self Sovereign Identity (SSI) network using Blockchain as a DKPI
Identity Containers
Self Sovereing ID On Substrate
Anti-Sibel protections - Any identity scheme must start with a rerandomizable certificate to prevent identities being link across domains, but individual domains might reasonably want only one unique identity for their domain. There are likely a few ways to do this, well certainly proof-of-personhood parties do this, but the tricks could be adapted to a centralized model, not using ring signatures.
Age over 18 - This is a rerandomizable certificate with a single feature, or maybe no features. It'd likely be implemented with blind signatures or OPRFs to enforce expiry, which makes it even more trivial. Afaik, any more specific permissions, like say a doctor's prescription, comes with strong expiry requirements that make blind signatures or OPRFs the only option.
The Path to Self-Sovereign Identity
Decentralized Identifiers (DIDs) v0.12
Verifiable Credentials Data Model 1.0
Introduction to DID Auth
ZKProof Standards Applications Track Proceedings
Decentralized, Self-Sovereign, and Blockchain Identity resources
A decentralized self sovereign identity solution developed by Jolocom.
Self Sovereign Identity — a guide to privacy for your digital identity with Blockchain
anonymous credentials
Aggregating CL-Signatures Revisited: Extended Functionality and Better Efficiency
hyperledger fabric
MSP Implementation with Identity Mixer
Concepts and Languages for Privacy-Preserving Attribute-Based Authentication
Sovrin: digital identities in the blockchain era
A First Look at Identity Management Schemes on the Blockchain
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