Present a Verifiable Credential
Present a JSON-LD Verifiable Credential, signed by a did:cheqd Decentralized Identifier (DID), using ACA-Py.
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Present a JSON-LD Verifiable Credential, signed by a did:cheqd Decentralized Identifier (DID), using ACA-Py.
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Using the /present-proof-2.0 API endpoints, it is possible to present Verifiable Credentials, signed by a cheqd DID, in a few clicks or lines of code. This process enables secure and trustworthy sharing of verifiable credentials within the ACA-Py framework and cheqd ecosystem.
Use any supported method to create a connection with the Holder. Automated out-of-band protocol is recommended. You can follow the same steps as described in .
After connection is established, the Verifier can send a proof request to the Holder.
The request body will depend on the credential; for our citizenship credential, this is a sample.
{
"auto_verify": false,
"connection_id": "{{issuer-conn-id}}",
"comment": "Proof request for json-ld credential.",
"presentation_request": {
"dif": {
"options": {
"challenge": "{{$randomUUID}}",
"domain": "test-citizenship"
},
"presentation_definition": {
"id": "{{$randomUUID}}",
"format": {
"ldp_vp": {
"proof_type": [
"Ed25519Signature2020"
]
}
},
"input_descriptors": [
{
"id": "citizenship_input_1",
"name": "EU Driver's License",
"schema": [
{
"uri": "https://www.w3.org/2018/credentials#VerifiableCredential"
},
{
"uri": "https://w3id.org/citizenship#PermanentResident"
}
],
"constraints": {
"fields": [
{
"path": [
"$.credentialSubject.familyName"
],
"purpose": "The claim must be from one of the specified issuers",
"filter": {
"const": "SMITH"
}
},
{
"path": [
"$.credentialSubject.givenName"
],
"filter": {
"const": "ALICE"
},
"purpose": "The claim must be from one of the specified issuers"
}
]
}
}
]
}
}
}
}Holder can get the stored credentials from own wallet and format a proof to send to the Verifier.
Request Body
For our citizenship credential example, the following is a sample request body.
{
"dif": {
"issuer_id": "{{issuer-did}}",
"presentation_definition": {
"id": "6d55f3ac-1dae-4306-a4bf-cf4fb93138b7",
"format": {
"ldp_vp": {
"proof_type": [
"Ed25519Signature2020"
]
}
},
"input_descriptors": [
{
"id": "citizenship_input_1",
"name": "EU Driver's License",
"schema": [
{
"uri": "https://www.w3.org/2018/credentials#VerifiableCredential"
},
{
"uri": "https://w3id.org/citizenship#PermanentResident"
}
],
"constraints": {
"fields": [
{
"path": [
"$.credentialSubject.familyName"
],
"purpose": "The claim must be from one of the specified issuers",
"filter": {
"const": "SMITH"
}
},
{
"path": [
"$.credentialSubject.givenName"
],
"filter": {
"const": "ALICE"
},
"purpose": "The claim must be from one of the specified issuers"
}
]
}
}
]
}
}
}Verifier receives the presentation via the connection, and can use the following API to verify. The response must have verified: true .
Presentation exchange identifier
{"value":"3fa85f64-5717-4562-b3fc-2c963f66afa6"}POST /present-proof-2.0/records/{pres_ex_id}/verify-presentation HTTP/1.1
Host:
Accept: */*
{
"auto_present": false,
"auto_remove": false,
"auto_verify": true,
"by_format": {
"pres": {},
"pres_proposal": {},
"pres_request": {}
},
"connection_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"created_at": "2021-12-31T23:59:59Z",
"error_msg": "Invalid structure",
"initiator": "self",
"pres": {
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"@type": "https://didcomm.org/my-family/1.0/my-message-type",
"comment": "text",
"formats": [
{
"attach_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"format": "dif/presentation-exchange/submission@v1.0"
}
],
"presentations~attach": [
{
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"byte_count": 1234,
"data": {
"base64": "ey4uLn0=",
"json": "{\"sample\": \"content\"}",
"jws": {
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0",
"signatures": [
{
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0"
}
]
},
"links": [
"https://link.to/data"
],
"sha256": "617a48c7c8afe0521efdc03e5bb0ad9e655893e6b4b51f0e794d70fba132aacb"
},
"description": "view from doorway, facing east, with lights off",
"filename": "IMG1092348.png",
"lastmod_time": "2021-12-31T23:59:59Z",
"mime-type": "image/png"
}
]
},
"pres_ex_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"pres_proposal": {
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"@type": "https://didcomm.org/my-family/1.0/my-message-type",
"comment": "text",
"formats": [
{
"attach_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"format": "dif/presentation-exchange/submission@v1.0"
}
],
"proposals~attach": [
{
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"byte_count": 1234,
"data": {
"base64": "ey4uLn0=",
"json": "{\"sample\": \"content\"}",
"jws": {
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0",
"signatures": [
{
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0"
}
]
},
"links": [
"https://link.to/data"
],
"sha256": "617a48c7c8afe0521efdc03e5bb0ad9e655893e6b4b51f0e794d70fba132aacb"
},
"description": "view from doorway, facing east, with lights off",
"filename": "IMG1092348.png",
"lastmod_time": "2021-12-31T23:59:59Z",
"mime-type": "image/png"
}
]
},
"pres_request": {
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"@type": "https://didcomm.org/my-family/1.0/my-message-type",
"comment": "text",
"formats": [
{
"attach_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"format": "dif/presentation-exchange/submission@v1.0"
}
],
"request_presentations~attach": [
{
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"byte_count": 1234,
"data": {
"base64": "ey4uLn0=",
"json": "{\"sample\": \"content\"}",
"jws": {
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0",
"signatures": [
{
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0"
}
]
},
"links": [
"https://link.to/data"
],
"sha256": "617a48c7c8afe0521efdc03e5bb0ad9e655893e6b4b51f0e794d70fba132aacb"
},
"description": "view from doorway, facing east, with lights off",
"filename": "IMG1092348.png",
"lastmod_time": "2021-12-31T23:59:59Z",
"mime-type": "image/png"
}
],
"will_confirm": true
},
"role": "prover",
"state": "proposal-sent",
"thread_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"trace": true,
"updated_at": "2021-12-31T23:59:59Z",
"verified": "true",
"verified_msgs": [
"text"
]
}Whether to remove the presentation exchange record on completion (overrides --preserve-exchange-records configuration setting)
Verifier choice to auto-verify proof presentation
Connection identifier
3fa85f64-5717-4562-b3fc-2c963f66afa6Whether to trace event (default false)
POST /present-proof-2.0/send-request HTTP/1.1
Host:
Content-Type: application/json
Accept: */*
Content-Length: 2482
{
"auto_remove": true,
"auto_verify": false,
"comment": "text",
"connection_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"presentation_request": {
"anoncreds": {
"name": "Proof request",
"non_revoked": {
"from": 1640995199,
"to": 1640995199
},
"nonce": "1",
"requested_attributes": {
"ANY_ADDITIONAL_PROPERTY": {
"name": "favouriteDrink",
"names": [
"age"
],
"non_revoked": {
"from": 1640995199,
"to": 1640995199
},
"restrictions": [
{
"ANY_ADDITIONAL_PROPERTY": "did:(method):3:CL:20:tag"
}
]
}
},
"requested_predicates": {
"ANY_ADDITIONAL_PROPERTY": {
"name": "index",
"non_revoked": {
"from": 1640995199,
"to": 1640995199
},
"p_type": ">=",
"p_value": 1,
"restrictions": [
{
"ANY_ADDITIONAL_PROPERTY": "did:(method):3:CL:20:tag"
}
]
}
},
"version": "1.0"
},
"dif": {
"options": {
"challenge": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"domain": "4jt78h47fh47"
},
"presentation_definition": {
"format": {
"di_vc": {},
"jwt": {},
"jwt_vc": {},
"jwt_vp": {},
"ldp": {},
"ldp_vc": {},
"ldp_vp": {}
},
"id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"input_descriptors": [
{
"constraints": {
"fields": [
{
"filter": {
"const": null,
"enum": [],
"exclusiveMaximum": null,
"exclusiveMinimum": null,
"format": "text",
"maxLength": 1234,
"maximum": null,
"minLength": 1234,
"minimum": null,
"not": false,
"pattern": "text",
"type": "text"
},
"id": "text",
"path": [
"text"
],
"predicate": "required",
"purpose": "text"
}
],
"is_holder": [
{
"directive": "required",
"field_id": [
"3fa85f64-5717-4562-b3fc-2c963f66afa6"
]
}
],
"limit_disclosure": "text",
"status_active": "required",
"status_revoked": "required",
"status_suspended": "required",
"subject_is_issuer": "required"
},
"group": [
"text"
],
"id": "text",
"metadata": {},
"name": "text",
"purpose": "text",
"schema": {
"oneof_filter": [
[
{
"uri": "https://www.w3.org/Test1#Test1"
},
{
"uri": "https://www.w3.org/Test2#Test2"
}
],
{
"oneof_filter": [
[
{
"uri": "https://www.w3.org/Test1#Test1"
}
],
[
{
"uri": "https://www.w3.org/Test2#Test2"
}
]
]
}
]
}
}
],
"name": "text",
"purpose": "text",
"submission_requirements": [
"[Circular Reference]"
]
},
"ANY_ADDITIONAL_PROPERTY": "anything"
},
"indy": {
"name": "Proof request",
"non_revoked": {
"from": 1640995199,
"to": 1640995199
},
"nonce": "1",
"requested_attributes": {
"ANY_ADDITIONAL_PROPERTY": {
"name": "favouriteDrink",
"names": [
"age"
],
"non_revoked": {
"from": 1640995199,
"to": 1640995199
},
"restrictions": [
{
"ANY_ADDITIONAL_PROPERTY": "WgWxqztrNooG92RXvxSTWv:3:CL:20:tag"
}
]
}
},
"requested_predicates": {
"ANY_ADDITIONAL_PROPERTY": {
"name": "index",
"non_revoked": {
"from": 1640995199,
"to": 1640995199
},
"p_type": ">=",
"p_value": 1,
"restrictions": [
{
"ANY_ADDITIONAL_PROPERTY": "WgWxqztrNooG92RXvxSTWv:3:CL:20:tag"
}
]
}
},
"version": "1.0"
}
},
"trace": false
}{
"auto_present": false,
"auto_remove": false,
"auto_verify": true,
"by_format": {
"pres": {},
"pres_proposal": {},
"pres_request": {}
},
"connection_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"created_at": "2021-12-31T23:59:59Z",
"error_msg": "Invalid structure",
"initiator": "self",
"pres": {
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"@type": "https://didcomm.org/my-family/1.0/my-message-type",
"comment": "text",
"formats": [
{
"attach_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"format": "dif/presentation-exchange/submission@v1.0"
}
],
"presentations~attach": [
{
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"byte_count": 1234,
"data": {
"base64": "ey4uLn0=",
"json": "{\"sample\": \"content\"}",
"jws": {
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0",
"signatures": [
{
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0"
}
]
},
"links": [
"https://link.to/data"
],
"sha256": "617a48c7c8afe0521efdc03e5bb0ad9e655893e6b4b51f0e794d70fba132aacb"
},
"description": "view from doorway, facing east, with lights off",
"filename": "IMG1092348.png",
"lastmod_time": "2021-12-31T23:59:59Z",
"mime-type": "image/png"
}
]
},
"pres_ex_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"pres_proposal": {
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"@type": "https://didcomm.org/my-family/1.0/my-message-type",
"comment": "text",
"formats": [
{
"attach_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"format": "dif/presentation-exchange/submission@v1.0"
}
],
"proposals~attach": [
{
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"byte_count": 1234,
"data": {
"base64": "ey4uLn0=",
"json": "{\"sample\": \"content\"}",
"jws": {
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0",
"signatures": [
{
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0"
}
]
},
"links": [
"https://link.to/data"
],
"sha256": "617a48c7c8afe0521efdc03e5bb0ad9e655893e6b4b51f0e794d70fba132aacb"
},
"description": "view from doorway, facing east, with lights off",
"filename": "IMG1092348.png",
"lastmod_time": "2021-12-31T23:59:59Z",
"mime-type": "image/png"
}
]
},
"pres_request": {
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"@type": "https://didcomm.org/my-family/1.0/my-message-type",
"comment": "text",
"formats": [
{
"attach_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"format": "dif/presentation-exchange/submission@v1.0"
}
],
"request_presentations~attach": [
{
"@id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"byte_count": 1234,
"data": {
"base64": "ey4uLn0=",
"json": "{\"sample\": \"content\"}",
"jws": {
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0",
"signatures": [
{
"header": {
"kid": "did:sov:LjgpST2rjsoxYegQDRm7EL#keys-4"
},
"protected": "ey4uLn0",
"signature": "ey4uLn0"
}
]
},
"links": [
"https://link.to/data"
],
"sha256": "617a48c7c8afe0521efdc03e5bb0ad9e655893e6b4b51f0e794d70fba132aacb"
},
"description": "view from doorway, facing east, with lights off",
"filename": "IMG1092348.png",
"lastmod_time": "2021-12-31T23:59:59Z",
"mime-type": "image/png"
}
],
"will_confirm": true
},
"role": "prover",
"state": "proposal-sent",
"thread_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"trace": true,
"updated_at": "2021-12-31T23:59:59Z",
"verified": "true",
"verified_msgs": [
"text"
]
}Presentation exchange identifier
{"value":"3fa85f64-5717-4562-b3fc-2c963f66afa6"}Presentation specification for anoncreds
Whether to remove the presentation exchange record on completion (overrides --preserve-exchange-records configuration setting)
Optional Presentation specification for DIF, overrides the PresentationExchange record's PresRequest
Presentation specification for indy
Record trace information, based on agent configuration
POST /present-proof-2.0/records/{pres_ex_id}/send-presentation HTTP/1.1
Host:
Content-Type: application/json
Accept: */*
Content-Length: 2418
{
"anoncreds": {
"requested_attributes": {
"ANY_ADDITIONAL_PROPERTY": {
"cred_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"revealed": true
}
},
"requested_predicates": {
"ANY_ADDITIONAL_PROPERTY": {
"cred_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"timestamp": 1640995199
}
},
"self_attested_attributes": {
"ANY_ADDITIONAL_PROPERTY": "self_attested_value"
},
"trace": false
},
"auto_remove": true,
"dif": {
"issuer_id": "text",
"presentation_definition": {
"format": {
"di_vc": {},
"jwt": {},
"jwt_vc": {},
"jwt_vp": {},
"ldp": {},
"ldp_vc": {},
"ldp_vp": {}
},
"id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"input_descriptors": [
{
"constraints": {
"fields": [
{
"filter": {
"const": null,
"enum": [],
"exclusiveMaximum": null,
"exclusiveMinimum": null,
"format": "text",
"maxLength": 1234,
"maximum": null,
"minLength": 1234,
"minimum": null,
"not": false,
"pattern": "text",
"type": "text"
},
"id": "text",
"path": [
"text"
],
"predicate": "required",
"purpose": "text"
}
],
"is_holder": [
{
"directive": "required",
"field_id": [
"3fa85f64-5717-4562-b3fc-2c963f66afa6"
]
}
],
"limit_disclosure": "text",
"status_active": "required",
"status_revoked": "required",
"status_suspended": "required",
"subject_is_issuer": "required"
},
"group": [
"text"
],
"id": "text",
"metadata": {},
"name": "text",
"purpose": "text",
"schema": {
"oneof_filter": [
[
{
"uri": "https://www.w3.org/Test1#Test1"
},
{
"uri": "https://www.w3.org/Test2#Test2"
}
],
{
"oneof_filter": [
[
{
"uri": "https://www.w3.org/Test1#Test1"
}
],
[
{
"uri": "https://www.w3.org/Test2#Test2"
}
]
]
}
]
}
}
],
"name": "text",
"purpose": "text",
"submission_requirements": [
{
"count": 1234,
"from": "text",
"from_nested": "[Circular Reference]",
"max": 1234,
"min": 1234,
"name": "text",
"purpose": "text",
"rule": "all"
}
]
},
"record_ids": {
"<input descriptor id_1>": [
"<record id_1>",
"<record id_2>"
],
"<input descriptor id_2>": [
"<record id>"
]
},
"reveal_doc": {
"@context": [
"https://www.w3.org/2018/credentials/v1",
"https://w3id.org/security/bbs/v1"
],
"@explicit": true,
"@requireAll": true,
"credentialSubject": {
"@explicit": true,
"@requireAll": true,
"Observation": [
{
"effectiveDateTime": {},
"@explicit": true,
"@requireAll": true
}
]
},
"issuanceDate": {},
"issuer": {},
"type": [
"VerifiableCredential",
"LabReport"
]
}
},
"indy": {
"requested_attributes": {
"ANY_ADDITIONAL_PROPERTY": {
"cred_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"revealed": true
}
},
"requested_predicates": {
"ANY_ADDITIONAL_PROPERTY": {
"cred_id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"timestamp": 1640995199
}
},
"self_attested_attributes": {
"ANY_ADDITIONAL_PROPERTY": "self_attested_value"
},
"trace": false
},
"trace": true
}{
"auto_present": false,
"auto_remove": false,
"auto_verify": true,
"by_format": {
"pres": {},
"pres_proposal": {},
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