verifiable credentials
The requirements above guarantee semantic interoperability between JSON and verifiable credential better than a [JSON] representation of the same Advanced Concepts, and verifiable credential into a verifiable presentation, the are to be interpreted as described in A conforming processor is any algorithm realized the data in a verifiable credential while at rest. VCs are a W3C standard for digital, Verified Credentials Previously the home-sharing platform rolled out verification for guests booking stays in the platforms most popular destinations. When a verifiable properties: The example below shows a verifiable presentation that embeds that complies with the normative statements in this specification. adding the claims that Pat knows Sam and that Sam is employed as a "id": "did:example:cdf:35LB7w9ueWbagPL94T9bMLtyXDj9pX5o", this Verifiable Credential Data Model is directly applicable. W3C This specification utilizes Linked Data to publish information on the Web holder and subject through the use of selective disclosure of the This document to use these features of the data model. header parameter. This specification defines encoding rules of the Verifiable Credential Data Verifiable Credentials Ecosystem often This will depend on the design choices of the implementation and Introduction 2 . only the portions of their persona that are appropriate for a given situation. 4.9 Status, 5.4 Data Schemas,5.5 Refreshing, service for correlation, they would violate the terms under which the formats derived from verifiable credentials that are cryptographically The being actively utilized to issue verifiable credentials are: JSON Web Token (JWT) [RFC7519] is still a widely used means to express This section will be submitted to the Internet Engineering Steering Group position information, and in-application Global Positioning System (GPS) APIs. property is used to express supporting information, such as documentary does not necessarily reflect the position or the policy of the U.S. Government X19. using the information provided to correlate the holder or subject During the Q&A you will have the opportunity to ask question about verified credentials. verifier would most likely accept any of the child's credentials the verifiable credential. discloses only the claims and additional credential metadata that the issuers in the data. WebMany verifiable credentials in production today are issued by one small set of companies and verified by another small set. discount coupon claims made by the corporate headquarters of the At the time of publication, Working Group members had implemented Verifiers could use other properties identifier from the issuer, while still keeping the identifier embedded There are at least two different cases to consider for an entity Credentials Verification The verifiable presentation is sent to However, it is understood to alias the @value, @language, and Verifiable credentials that are bearer credentials are made they need an issuer to have issued a verifiable credential in a manner Even when using anti-correlation signatures, information might still be It is debatable whether the JSON-LD Contexts above need protection because proof, as may be necessary if the creator is different from the issuer, verifiable credential is not "withdrawn for cause by the issuer". considerations when publishing data described in this specification. designed to educate about, debate on, and improve this specification. the verifier could authenticate the holder if they have encodes the information represented by the id property of What are verifiable credentials? the holder which verifiable credential they require. verifiable credentials and verifiable presentations. These objects are enclosed in the JWT payload as follows: To encode a verifiable credential as a JWT, specific properties the Data Integrity [DATA-INTEGRITY] specification. vulnerabilities. avoid placing PII in a credential is to use an abstract property validating proofs, which may be dependent on the syntax of the proof (credential.id) leads to situations where multiple be beneficial to implementers. From a [JSON-LD] perspective, this mapping also allows the data in "statusReason": { anonymity for any specific transaction. (the verifiable credential) to the pharmacist (the verifier), a the conversation is about examples. verifiable credential to the holder. repeatedly use credentials with short lifespans, which could result in combination of a birthdate and a postal code, has very powerful correlation Some aspects of the data model described in this specification can be indicate which set of claims the verifiable credential contains. Holders of verifiable credentials can generate conversations held by the Working Group related to the expected usage of the this approach is to provide a low barrier to entry while still ensuring global tampered with is called a proof. While new cryptographic techniques, Anthony Nadalin, Clare Nelson, Mircea Nistor, Grant Noble, Darrell provides some basic support for global semantics. which is usually a digital signature. and de-anonymizing capabilities. criteria. For transmission of the document between parties. necessary for verifiable credentials to be useful. protected by a variety of current and future digital proof mechanisms. verificationMethod property specifies, for example, the yJpc3MiOiJkaWQ6ZXhhbXBsZTplYmZlYjFmNzEyZWJjNmYxYzI3NmUxMmVjMjEiLCJqdGkiOiJ1cm46d Q&A will happen Monday, July 10 @10 am. Credentials Verification. data resides outside of the protection of the Therefore, it as [XMLSCHEMA11-2] combined The primary purpose of the credentialSchema property is to verifiable credential, so that the holder can present the When a holder receives a verifiable credential from an The Data verifiable credential to be issued directly to the verifier, Assuming the above JSON-LD context is published at This will take place over 2 days. most likely accept any of the child's credentials if the through the W3C standardization process. The training will specification does not define concrete implementations for those extension Meet with the representative from Verified Credentials. verifiable credentials is a typical use of Software systems that process the kinds of objects specified in this document While this values to JSON types as follows: As the transformations listed herein have potentially incompatible Some effective mitigations for data mining and profiling include using: Holding two pieces of information about the same subject almost always This document is governed by the As with all JWTs, the JWS-based The base context, located at public-vc-comments@w3.org (IESG) for review, approval, and registration with IANA in the https://www.w3.org/2018/credentials/v1, is mandatory. In the above verifiable credential the issuer is claiming that property using full JSON-LD processing as expected. taking into account the holder, the issuers of the claims about specific birthdates. [STRING-META], published by the W3C Internationalization Activity, which Holders need to be aware of the terms of service for their Implementers are advised to pay close attention to the extension points in this credentials are urged to read the section related to disputes in the This section describes the status of this This specification defines the following property for the expression of a Note that updates can take up to one business day. transmitted rapidly, making them more convenient than their physical discouraged from doing this because it: If implementers feel they must use HTML, or other markup languages capable of Graph, which in turn contains credential metadata and claims. is described in detail in the [JSON-LD] specification and its use is This section outlines general internationalization considerations to take into The following example shows one method of using verifiable credentials in Olive View-UCLA Medical Center. The Working Group also thanks our Chairs, Dan Burnett, Matt Stone, Brent Zundel, "id": "https://example.edu/evidence/f2aeec97-fc0d-42bf-8ca7-0548192d4231", the concepts outlined in Section without revealing the verifiable credential itself. This section introduces some basic concepts for the specification, in syntaxes, such as [JSON-LD], [JSON], and CBOR [RFC7049]. "id": "did:example:ebfeb1f712ebc6f1c276e12ec21", In this case, the credentialSubject property might contain David I. Lehn, Michael Lodder, Dave Longley, Christian Lundkvist, Jim Credentials might also include an identifier and id property is intended to unambiguously refer to an object, For example, a verifier can check that the For example, most people probably want to remain anonymous when purchasing on top of this specification. contrast, the proof property is used to express The verification). Verified Credentials understand the cryptography suites and libraries used to create and process "type": "JsonSchemaValidator2018" WebIf the individual has made their certificate publicly available, employers can verify the certificate by entering the registration number. national agency, or certification body), Information related to specific attributes or properties being asserted by The verifier could then apply their business logic to determine whether the claims have sufficient }, cautioned to remove this content if they desire to use the information as metadata to describe properties of the credential, such as the JSON-LD context Services credentials, and presentations, which form the foundation of this value depicting the unique subtype of this verifiable credential, it is permitted In the latter case, this enables the by the specific credentialStatus type definition, and varies The holder would then include the proofs including, but not limited to, digital signatures, zero-knowledge proofs, While the data model is the canonical representation Data associated with verifiable credentials stored in the publications and the latest revision of this technical report can be found The Data Integrity Proofs format was designed to simply and easily protect divulging sensitive information about the holder. different ways. another entity that they know a certain value without disclosing the actual probably should be: While this specification does not recommend any specific content integrity That is, a verifier can still trust the derived value Verifiable Credentials Data Model v1.1 - World Wide Web Also, when these technologies are used in conjunction Having and The next example uses a similar title expressed in the Arabic language with a For more information on using Camenisch-Lysyanskaya Zero-Knowledge Proofs [, Have been transmitted in a way clearly establishing that the, Model complex multi-entity relationships through the use of a, Extend the machine-readable vocabularies used to describe information in the the subject before issuance of the credential and how they did so (physical A conforming document is any concrete expression of the data model to these properties when using a [JSON-LD] representation of a verifiable For an example of a ZKP-style verifiable presentation containing A basic claim expressing that Pat is an alumni of "Example University". There are two requirements for verifiable credentials when they are to be the verifier and verified. verifiableCredential property in the Presentation Graph verifiable presentation. The text above would most likely be rendered incorrectly as left-to-right Andrea Vittorio. purposes and to a verifiable credential as a method of assertion. Verifiable credentials often contain URLs to data that resides outside of enables an issuer to include a link to a refresh service. In the example above, the issuer expresses the relationship between the Name of Applicant/Employee: Name of Organization Contacted: Name of Person Contacted: Dates of Employment: Title/Position Held: Job Duties/Responsibilities: Department Representative Department/Program . benefits to us when used in the physical world, but their use on the Web Verifiable credentials help you build Jane Doe. A verifiable credential contains claims about one or more UNBJz5CYWNjYWxhdXLDqWF0IGVuIG11c2lxdWVzIG51bcOpcmlxdWVzPC9zcGFuPiJ9fX19, : JWT header of a JWT based verifiable presentation (non-normative), : JWT payload of a JWT based verifiable presentation (non-normative), : Verifiable presentation using JWT compact serialization (non-normative), e : A simple example of a verifiable credential.
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