Status List v2021
Last updated
Last updated
Create Status List v2021
Create a Status List v2021 on cheqd as a DID-Linked Resource
Update Status List v2021
Update a Status List v2021 to revoke/suspend credentials
Check Status List v2021
Check whether a specified indices is revoked, suspended, unsuspended or valid
Search Status List v2021
Search for specific entries in the Status List, traversing its history
The Status List v2021 supported in cheqd Studio utilise bitstrings to represent whether a Verifiable Credential has been suspended/revoked or not. A bitstring can be thought of as a long list of 1s and 0s, where, if the binary value of the position in the list is 1 (one), the verifiable credential is revoked, if it is 0 (zero) it is not revoked.
Figure 1: Graphic showing the StatusList2021 bitstring
Each issued Credential correlates with a position and index on the bitstring, so that a verifier will be able to correlate the value within the Credential against the public bitstring to ascertain whether the Credential has been revoked or not, using a validate algorithm as well as a bitstring expansion algorithm.
The issuer keeps a bitstring list of all Verifiable Credentials it has issued. The Status List is usually published by the issuer in the format of its own Verifiable Credential. This Verifiable Credential is generally hosted publicly on a centralised server or domain to enable third-party read-access.
cheqd stores each Status List and subsequent entries on-ledger as DID-Linked Resource versions. This has notable benefits, including the provenance, legitimacy and security of the Status List. For a full list of benefits, see the context for creating DID-Linked Resources.
