Vaccination Certificate Vocabulary v0.1

This specification describes an experimental vocabulary for asserting Verifiable Credentials related to vaccination certificates for medical purposes

Introduction

This specification describes an experimental vocabulary for asserting Verifiable Credentials related to vaccination certificates for medical purposes

Use Cases and Requirements

The following use cases outline a number of key scenarios that readers might find useful:

Proof of Immunization
Continuity of Care

Example

The following examples are provided as a simple example of how this vocabulary can be used in-conjunction with Verifiable Credentials [[VC-DATA-MODEL]]

          {
            "@context": [
              "https://www.w3.org/2018/credentials/v1",
              "https://w3id.org/vaccination/v1"
            ],
            "type": [
              "VerifiableCredential",
              "VaccinationCertificate"
            ],
            "id": "urn:uvci:af5vshde843jf831j128fj",
            "name": "COVID-19 Vaccination Certificate",
            "description": "COVID-19 Vaccination Certificate",
            "issuanceDate": "2019-12-03T12:19:52Z",
            "expirationDate": "2029-12-03T12:19:52Z",
            "issuer": "did:key:z6MkiY62766b1LJkExWMsM3QG4WtX7QpY823dxoYzr9qZvJ3",
            "credentialSubject": {
              "type": "VaccinationEvent",
              "batchNumber": "1183738569",
              "administeringCentre": "MoH",
              "healthProfessional": "MoH",
              "countryOfVaccination": "NZ",
              "recipient": {
                "type": "VaccineRecipient",
                "givenName": "JOHN",
                "familyName": "SMITH",
                "gender": "Male",
                "birthDate": "1958-07-17"
              },
              "vaccine": {
                "type": "Vaccine",
                "disease": "COVID-19",
                "atcCode": "J07BX03",
                "medicinalProductName": "COVID-19 Vaccine Moderna",
                "marketingAuthorizationHolder": "Moderna Biotech"
              }
            },
            "proof": {
              "type": "Ed25519Signature2018",
              "created": "2021-02-18T23:00:15Z",
              "jws": "eyJhbGciOiJFZERTQSIsImI2NCI6ZmFsc2UsImNyaXQiOlsiYjY0Il19..vD_vXJCWdeGpN-qKHDIlzgGC0auRPcwp3O1sOI-gN8z3UD4pI0HO_77ob5KHhhU1ugLrrwrMsKv71mqHBn-dBg",
              "proofPurpose": "assertionMethod",
              "verificationMethod": "did:key:z6MkiY62766b1LJkExWMsM3QG4WtX7QpY823dxoYzr9qZvJ3#z6MkiY62766b1LJkExWMsM3QG4WtX7QpY823dxoYzr9qZvJ3"
            }
          }

          {
            "@context": [
              "https://www.w3.org/2018/credentials/v1",
              "https://w3id.org/vaccination/v1",
              "https://w3id.org/security/bbs/v1"
            ],
            "type": [
              "VerifiableCredential",
              "VaccinationCertificate"
            ],
            "id": "urn:uvci:af5vshde843jf831j128fj",
            "name": "COVID-19 Vaccination Certificate",
            "description": "COVID-19 Vaccination Certificate",
            "issuanceDate": "2019-12-03T12:19:52Z",
            "expirationDate": "2029-12-03T12:19:52Z",
            "issuer": "did:key:zUC724vuGvHpnCGFG1qqpXb81SiBLu3KLSqVzenwEZNPoY35i2Bscb8DLaVwHvRFs6F2NkNNXRcPWvqnPDUd9ukdjLkjZd3u9zzL4wDZDUpkPAatLDGLEYVo8kkAzuAKJQMr7N2",
            "credentialSubject": {
              "type": "VaccinationEvent",
              "batchNumber": "1183738569",
              "administeringCentre": "MoH",
              "healthProfessional": "MoH",
              "countryOfVaccination": "NZ",
              "recipient": {
                "type": "VaccineRecipient",
                "givenName": "JOHN",
                "familyName": "SMITH",
                "gender": "Male",
                "birthDate": "1958-07-17"
              },
              "vaccine": {
                "type": "Vaccine",
                "disease": "COVID-19",
                "atcCode": "J07BX03",
                "medicinalProductName": "COVID-19 Vaccine Moderna",
                "marketingAuthorizationHolder": "Moderna Biotech"
              }
            },
            "proof": {
              "type": "BbsBlsSignature2020",
              "created": "2021-02-18T23:01:59Z",
              "proofPurpose": "assertionMethod",
              "proofValue": "kyesJtjITx/qsXTOuBpAu44e1UC9kjwqbEVyPqTiHL0pVPyaD/xeD0pEw/qBtr25SfrmMj3wXhCMfH77cc6+JgpgIaAnmR5wtTKGsxNm03wwlXf8LFZujjbw+Uf9Wm3aNO7rmAdrG3ec8e9VEQZeIw==",
              "verificationMethod": "did:key:zUC724vuGvHpnCGFG1qqpXb81SiBLu3KLSqVzenwEZNPoY35i2Bscb8DLaVwHvRFs6F2NkNNXRcPWvqnPDUd9ukdjLkjZd3u9zzL4wDZDUpkPAatLDGLEYVo8kkAzuAKJQMr7N2#zUC724vuGvHpnCGFG1qqpXb81SiBLu3KLSqVzenwEZNPoY35i2Bscb8DLaVwHvRFs6F2NkNNXRcPWvqnPDUd9ukdjLkjZd3u9zzL4wDZDUpkPAatLDGLEYVo8kkAzuAKJQMr7N2"
            }
          }

          {
            "@context": [
              "https://www.w3.org/2018/credentials/v1",
              "https://w3id.org/vaccination/v1",
              "https://w3id.org/security/bbs/v1"
            ],
            "id": "urn:uvci:af5vshde843jf831j128fj",
            "type": [
              "VaccinationCertificate",
              "VerifiableCredential"
            ],
            "description": "COVID-19 Vaccination Certificate",
            "name": "COVID-19 Vaccination Certificate",
            "expirationDate": "2029-12-03T12:19:52Z",
            "issuanceDate": "2019-12-03T12:19:52Z",
            "issuer": "did:key:zUC724vuGvHpnCGFG1qqpXb81SiBLu3KLSqVzenwEZNPoY35i2Bscb8DLaVwHvRFs6F2NkNNXRcPWvqnPDUd9ukdjLkjZd3u9zzL4wDZDUpkPAatLDGLEYVo8kkAzuAKJQMr7N2",
            "credentialSubject": {
              "id": "urn:bnid:_:c14n2",
              "type": "VaccinationEvent",
              "batchNumber": "1183738569",
              "countryOfVaccination": "NZ"
            },
            "proof": {
              "type": "BbsBlsSignatureProof2020",
              "created": "2021-02-18T23:04:28Z",
              "nonce": "JNGovx4GGoi341v/YCTcZq7aLWtBtz8UhoxEeCxZFevEGzfh94WUSg8Ly/q+2jLqzzY=",
              "proofPurpose": "assertionMethod",
              "proofValue": "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",
              "verificationMethod": "did:key:zUC724vuGvHpnCGFG1qqpXb81SiBLu3KLSqVzenwEZNPoY35i2Bscb8DLaVwHvRFs6F2NkNNXRcPWvqnPDUd9ukdjLkjZd3u9zzL4wDZDUpkPAatLDGLEYVo8kkAzuAKJQMr7N2#zUC724vuGvHpnCGFG1qqpXb81SiBLu3KLSqVzenwEZNPoY35i2Bscb8DLaVwHvRFs6F2NkNNXRcPWvqnPDUd9ukdjLkjZd3u9zzL4wDZDUpkPAatLDGLEYVo8kkAzuAKJQMr7N2"
            }
          }

Representation Size

Certain applications of Verifiable Credentials create constraints around the permitted size of a credentials representation, one such example constraint is expressing a Verifiable Credential in a QR Code.

Vaccination Certificates are a particular use-case where a solution involving much of the benefits of Verifiable Credentials can be realized without requiring the credential subject to possess or have access to digital infrastructure such as a digital wallet. Instead the Verifiable Credential can be issued by the issuer, printed to a physical medium (e.g paper) and shared with the subject.

There are numerous techniques that can be used to keep the representation of a Verifiable Credential small, two of the most notable are:

Limiting the included data elements: The resulting representation is a product of the encoded information, less information, smaller representation.
Choice of data encoding technology: Different data encoding technologies (e.g JSON, CBOR) have different characteristics around the resulting size of representation.

As an example below the following Vaccination Certificate is issued as a Verifiable Credential using a subset of the vocabulary defined by this document. The resulting Verifiable Credential is then encoded in both JSON-LD and CBOR-LD to show the compression.

        {
          "@context": [
            "https://www.w3.org/2018/credentials/v1",
            "https://w3id.org/vaccination/v1"
          ],
          "type": [
            "VerifiableCredential",
            "VaccinationCertificate"
          ],
          "id": "urn:uvci:af5vshde843jf831j128fj",
          "issuanceDate": "2019-12-03T12:19:52Z",
          "expirationDate": "2029-12-03T12:19:52Z",
          "issuer": "did:key:z6MkiY62766b1LJkExWMsM3QG4WtX7QpY823dxoYzr9qZvJ3",
          "credentialSubject": {
            "type": "VaccinationEvent",
            "batchNumber": "1183738569",
            "administeringCentre": "MoH",
            "countryOfVaccination": "NZ",
            "recipient": {
              "type": "VaccineRecipient",
              "givenName": "JOHN",
              "familyName": "SMITH",
              "gender": "Male",
              "birthDate": "1958-07-17"
            },
            "vaccine": {
              "type": "Vaccine",
              "atcCode": "J07BX03"
            }
          },
          "proof": {
            "type": "Ed25519Signature2018",
            "created": "2021-02-18T23:49:52Z",
            "jws": "eyJhbGciOiJFZERTQSIsImI2NCI6ZmFsc2UsImNyaXQiOlsiYjY0Il19..a3UqIuKSOmCKrdn2knl_hCjiN4f4Ud1eO5ckwEHb623V9vdCwWCDB7GBHlRBYSI8ek2E-By7xysVFwutcpOeDg",
            "proofPurpose": "assertionMethod",
            "verificationMethod": "did:key:z6MkiY62766b1LJkExWMsM3QG4WtX7QpY823dxoYzr9qZvJ3#z6MkiY62766b1LJkExWMsM3QG4WtX7QpY823dxoYzr9qZvJ3"
          }
        }

      d9                --  next 2 bytes
        0501            -- Tag #1281
          a8            -- Map, 8 pairs
            01          -- {Key:0}, 1
            82          -- {Val:0}, Array, 2 items
              11        -- [0], 17
              78        -- String, length next 1 byte
                1f      -- String, length: 31
                  68747470733a2f2f773369642e6f72672f76616363696e6174696f6e2f7631 -- [1], "https://w3id.org/vaccination/v1"
            18          -- Positive number, next 1 byte
              3e        -- {Key:1}, 62
            82          -- {Val:1}, Array, 2 items
              0f        -- [0], 15
              0b        -- [1], 11
            18          -- Positive number, next 1 byte
              2b        -- {Key:2}, 43
            78          -- String, length next 1 byte
              1f        -- String, length: 31
                75726e3a757663693a61663576736864653834336a663833316a313238666a -- {Val:2}, "urn:uvci:af5vshde843jf831j128fj"
            18          -- Positive number, next 1 byte
              2d        -- {Key:3}, 45
            1a          -- Positive number, next 4 bytes
              5de652e8  -- {Val:3}, 1575375592
            18          -- Positive number, next 1 byte
              24        -- {Key:4}, 36
            1a          -- Positive number, next 4 bytes
              70b64a68  -- {Val:4}, 1890994792
            18          -- Positive number, next 1 byte
              2f        -- {Key:5}, 47
            82          -- {Val:5}, Array, 2 items
              19        -- Positive number, next 2 bytes
                0401    -- [0], 1025
              58        -- Bytes, length next 1 byte
                22      -- Bytes, length: 34
                  ed013cab50d559e78a1bab71841fd9cbd9e802999038685ef84b7e490d2717c2b110 -- [1], ed013cab50d559e78a1bab71841fd9cbd9e802999038685ef84b7e490d2717c2b110
            18          -- Positive number, next 1 byte
              1d        -- {Key:6}, 29
            a6          -- {Val:6}, Map, 6 pairs
              18        -- Positive number, next 1 byte
                3e      -- {Key:0}, 62
              0c        -- {Val:0}, 12
              15        -- {Key:1}, 21
              6a        -- String, length: 10
                31313833373338353639 -- {Val:1}, "1183738569"
              11        -- {Key:2}, 17
              63        -- String, length: 3
                4d6f48  -- {Val:2}, "MoH"
              18        -- Positive number, next 1 byte
                18      -- {Key:3}, 24
              62        -- String, length: 2
                4e5a    -- {Val:3}, "NZ"
              18        -- Positive number, next 1 byte
                3a      -- {Key:4}, 58
              a5        -- {Val:4}, Map, 5 pairs
                18      -- Positive number, next 1 byte
                  3e    -- {Key:0}, 62
                0e      -- {Val:0}, 14
                18      -- Positive number, next 1 byte
                  28    -- {Key:1}, 40
                64      -- String, length: 4
                  4a4f484e -- {Val:1}, "JOHN"
                18      -- Positive number, next 1 byte
                  26    -- {Key:2}, 38
                65      -- String, length: 5
                  534d495448 -- {Val:2}, "SMITH"
                18      -- Positive number, next 1 byte
                  27    -- {Key:3}, 39
                64      -- String, length: 4
                  4d616c65 -- {Val:3}, "Male"
                16      -- {Key:4}, 22
                6a      -- String, length: 10
                  313935382d30372d3137 -- {Val:4}, "1958-07-17"
              18        -- Positive number, next 1 byte
                3f      -- {Key:5}, 63
              a2        -- {Val:5}, Map, 2 pairs
                18      -- Positive number, next 1 byte
                  3e    -- {Key:0}, 62
                0d      -- {Val:0}, 13
                13      -- {Key:1}, 19
                67      -- String, length: 7
                  4a303742583033 -- {Val:1}, "J07BX03"
            18          -- Positive number, next 1 byte
              37        -- {Key:7}, 55
            a5          -- {Val:7}, Map, 5 pairs
              18        -- Positive number, next 1 byte
                3e      -- {Key:0}, 62
              07        -- {Val:0}, 7
              18        -- Positive number, next 1 byte
                19      -- {Key:1}, 25
              1a        -- Positive number, next 4 bytes
                602efd20 -- {Val:1}, 1613692192
              18        -- Positive number, next 1 byte
                30      -- {Key:2}, 48
              78        -- String, length next 1 byte
                90      -- String, length: 144
                  65794a68624763694f694a465a45525451534973496d49324e4349365a6d467363325573496d4e79615851694f6c7369596a5930496c31392e2e6133557149754b534f6d434b72646e326b6e6c5f68436a694e346634556431654f35636b7745486236323356397664437757434442374742486c524259534938656b32452d427937787973564677757463704f654467 -- {Val:2}, "eyJhbGciOiJFZERTQSIsImI2NCI6ZmFsc2UsImNyaXQiOlsiYjY0Il19..a3UqIuKSOmCKrdn2knl_hCjiN4f4Ud1eO5ckwEHb623V9vdCwWCDB7GBHlRBYSI8ek2E-By7xysVFwutcpOeDg"
              18        -- Positive number, next 1 byte
                38      -- {Key:3}, 56
              12        -- {Val:3}, 18
              18        -- Positive number, next 1 byte
                43      -- {Key:4}, 67
              83        -- {Val:4}, Array, 3 items
                19      -- Positive number, next 2 bytes
                  0401  -- [0], 1025
                58      -- Bytes, length next 1 byte
                  22    -- Bytes, length: 34
                    ed013cab50d559e78a1bab71841fd9cbd9e802999038685ef84b7e490d2717c2b110 -- [1], ed013cab50d559e78a1bab71841fd9cbd9e802999038685ef84b7e490d2717c2b110
                58      -- Bytes, length next 1 byte
                  22    -- Bytes, length: 34
                    ed013cab50d559e78a1bab71841fd9cbd9e802999038685ef84b7e490d2717c2b110 -- [2], ed013cab50d559e78a1bab71841fd9cbd9e802999038685ef84b7e490d2717c2b110
      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

Below illustrates the size difference of the Verifiable Credential example shown above encoded in JSON-LD and CBOR-LD.

Encoding Technology	Size (bytes)
JSON-LD	1217
CBOR-LD	461

Below shows a QR Code that features the Verifiable Credential example shown above compressed using CBOR-LD converted to base32 in accordance with [[!RFC4648]] and encoded into a QR Code using the alphanumeric mode.

a qr code based representation of a Verifiable Credential encoded as CBOR-LD — A QR Code based representation of a Verifiable Credential encoded as CBOR-LD

The Vaccination Certificate Vocabulary

This vocabulary assumes all terms specified in the base Verifiable Credentials [[VC-DATA-MODEL]] context. In addition, the following classes are available for specifying information related to proof of vaccination for medical purposes

Class	Description
VaccinationCertificate	Specifies that the credential is a vaccination certificate
VaccinationEvent	Specifies the details of the vaccination event including the administration details.
VaccineRecipient	Specifies that the subject of the credential is the recipient of a specified vaccine.
Vaccine	Specifies the details of medical product serving as a vaccine.

Vaccination Event

Term	Description
order	Order in the vaccination course.
batchNumber	A distinctive combination of numbers and/or letters which specifically identifies a batch.
dateOfVaccination	Date in which the vaccination event occurred.
administeringCentre	Name/code of administering centre or a health authority responsible for the vaccination event.
healthProfessional	Name or health professional code responsible for administering the vaccine or prophylaxis.
countryOfVaccination	The country in which the vaccine recipient was vaccinated.
nextVaccinationDate	Date on which the next vaccination should be administered to the vaccine recipient.
recipient	The recipient of the vaccine.
vaccine	The details of vaccine administered.

Order

Order in the vaccination course.

Term	order
URL	https://w3id.org/vaccination#order
Expected Value	String

Batch Number

A distinctive combination of numbers and/or letters which specifically identifies a batch.

Term	batchNumber
URL	https://w3id.org/vaccination#batchNumber
Expected Value	String

Date Of Vaccination

Date in which the vaccination event occurred.

Term	dateOfVaccination
URL	https://w3id.org/vaccination#dateOfVaccination
Expected Value	Datetime

Administering Centre

Name/code of administering centre or a health authority responsible for the vaccination event.

Term	administeringCentre
URL	https://w3id.org/vaccination#administeringCentre
Expected Value	String

Health Professional

Name or health professional code responsible for administering the vaccine or prophylaxis.

Term	healthProfessional
URL	https://w3id.org/vaccination#healthProfessional
Expected Value	String

Country Of Vaccination

The country in which the vaccine recipient was vaccinated, MUST be a valid country code as per ISO 3166.

Term	countryOfVaccination
URL	https://w3id.org/vaccination#countryOfVaccination
Expected Value	String

Next Vaccination Date

Date on which the next vaccination should be administered to the vaccine recipient.

Term	nextVaccinationDate
URL	https://w3id.org/vaccination#nextVaccinationDate
Expected Value	Datetime

Recipient

The recipient of the vaccine.

Term	recipient
URL	https://w3id.org/vaccination#recipient
Expected Value	https://w3id.org/vaccination#VaccineRecipient

Vaccine

The details of vaccine administered.

Term	vaccine
URL	https://w3id.org/vaccination#VaccineEventVaccine
Expected Value	https://w3id.org/vaccination#Vaccine

Vaccine Recipient

This document specifies the following terms for expressing the details about the vaccine recipient.

Term	Description
birthDate	The date on which the vaccine recipient was born.
familyName	The name of the family with which the vaccine recipient identifies.
givenName	The non-family name with which the vaccine recipient identifies.
gender	The gender of the vaccine recipient.

Birth Date

The date on which the vaccine recipient was born.

Term	birthDate
URL	http://schema.org/birthDate
Expected Value	Datetime

Family Name

The date on which the vaccine recipient was born.

Term	familyName
URL	http://schema.org/familyName
Expected Value	String

Given Name

The date on which the vaccine recipient was born.

Term	givenName
URL	http://schema.org/givenName
Expected Value	String

Gender

The gender of the vaccine recipient.

Term	gender
URL	http://schema.org/gender
Expected Value	String

Vaccine

This document specifies the following terms for expressing the details about the "Vaccine"

Term	Description
atcCode	Anatomical Therapeutic Chemical Code.
disease	Disease or agent that the vaccination administered to the recipient provides protection against.
vaccine	Generic description of the vaccine/prophylaxis or its component(s).
medicinalProductName	Medicinal product name.
marketingAuthorizationHolder	Marketing Authorization Holder.

ATC Code

Anatomical Therapeutic Chemical Code, see [[WHO-ATC-CODE]]

Term	atcCode
URL	https://w3id.org/vaccination#atcCode
Expected Value	String

Disease

Disease or agent that the vaccination administered to the recipient provides protection against.

Term	disease
URL	https://w3id.org/vaccination#disease
Expected Value	String

Medicinal Product Name

Medicinal product name of the vaccine.

Term	medicinalProductName
URL	https://w3id.org/vaccination#medicinalProductName
Expected Value	String

Marketing Authorization Holder

Marketing authorization holder of the vaccine.

Term	marketingAuthorizationHolder
URL	https://w3id.org/vaccination#marketingAuthorizationHolder
Expected Value	String

Privacy Considerations

This section details the general privacy considerations and specific privacy implications of deploying this specification into production environments.

Security Considerations

There are a number of security considerations that implementers should be aware of when processing data described by this specification. Ignoring or not understanding the implications of this section can result in security vulnerabilities.

While this section attempts to highlight a broad set of security considerations, it is not a complete list. Implementers are urged to seek the advice of security and cryptography professionals when implementing mission critical systems using the technology outlined in this specification.

Accessibility Considerations

There are a number of accessibility considerations implementers should be aware of when processing data described in this specification. As with any web standards or protocols implementation, ignoring accessibility issues makes this information unusable to a large subset of the population. It is important to follow accessibility guidelines and standards, such as [[WCAG21]], to ensure all people, regardless of ability, can make use of this data. This is especially important when establishing systems utilizing cryptography, which have historically created problems for assistive technologies.

This section details the general accessibility considerations to take into account when utilizing this data model.

Internationalization Considerations

There are a number of internationalization considerations implementers should be aware of when publishing data described in this specification. As with any web standards or protocols implementation, ignoring internationalization makes it difficult for data to be produced and consumed across a disparate set of languages and societies, which would limit the applicability of the specification and significantly diminish its value as a standard.

This section outlines general internationalization considerations to take into account when utilizing this data model.

Introduction

Use Cases and Requirements

Example

Representation Size

Terminology

Concepts

The Vaccination Certificate Vocabulary

Vaccination Event

Order

Batch Number

Date Of Vaccination

Administering Centre

Health Professional

Country Of Vaccination

Next Vaccination Date

Recipient

Vaccine

Vaccine Recipient

Birth Date

Family Name

Given Name

Gender

Vaccine

ATC Code

Disease

Medicinal Product Name

Marketing Authorization Holder

Privacy Considerations

Security Considerations

Accessibility Considerations

Internationalization Considerations