Issue VP
curl --request POST \
--url https://api.example.com/credential/vp/{vcId} \
--header 'Content-Type: application/json' \
--data '
{
"targetVerifier": "organization.com"
}
'import requests
url = "https://api.example.com/credential/vp/{vcId}"
payload = { "targetVerifier": "organization.com" }
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({targetVerifier: 'organization.com'})
};
fetch('https://api.example.com/credential/vp/{vcId}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.example.com/credential/vp/{vcId}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'targetVerifier' => 'organization.com'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.example.com/credential/vp/{vcId}"
payload := strings.NewReader("{\n \"targetVerifier\": \"organization.com\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.example.com/credential/vp/{vcId}")
.header("Content-Type", "application/json")
.body("{\n \"targetVerifier\": \"organization.com\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.example.com/credential/vp/{vcId}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n \"targetVerifier\": \"organization.com\"\n}"
response = http.request(request)
puts response.read_body{
"presentation": {
"@context": [
"https://www.w3.org/ns/credentials/v2",
"https://via.humanos.tech/ns/v1"
],
"type": [
"VerifiablePresentation"
],
"holder": "did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000",
"verifiableCredential": {
"@context": [
"https://www.w3.org/ns/credentials/v2",
"https://via.humanos.tech/ns/v1"
],
"specVersion": "0.2",
"id": "urn:via:credential:550e8400-e29b-41d4-a716-446655440000",
"type": [
"VerifiableCredential",
"VIAMandate"
],
"issuer": "did:web:humanos.tech",
"validFrom": "2025-01-01T00:00:00Z",
"validUntil": null,
"credentialSubject": {
"id": "did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000",
"mandate": {
"grantor": "did:web:humanos.tech:user:7c9e6679-7425-40de-944b-e07fc1f90ae7",
"scope": "humanos.credential.request",
"context": {
"authorizedDIDs": [
"did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000",
"did:web:humanos.tech:user:7c9e6679-7425-40de-944b-e07fc1f90ae7"
]
}
}
},
"evidence": [
{
"id": "urn:via:evidence:9b2e4f1a-3c7d-4e8a-bf12-2a6c5d8e0f34",
"type": [
"VIAEvidence"
],
"mediaType": "application/pdf",
"digestSRI": "sha256-abc123",
"location": "https://api.humanos.tech/credential/evidence/urn:via:evidence:9b2e4f1a-3c7d-4e8a-bf12-2a6c5d8e0f34"
}
],
"proof": {
"type": "DataIntegrityProof",
"cryptosuite": "eddsa-jcs-2022",
"verificationMethod": "did:web:humanos.tech#key-1",
"created": "2026-05-02T10:15:30.000Z",
"proofPurpose": "assertionMethod",
"proofValue": "z2pcVdSdoMTrkTRrXdz...",
"event": "STAMP"
}
},
"proof": {
"type": "DataIntegrityProof",
"cryptosuite": "eddsa-jcs-2022",
"created": "2026-05-02T10:15:30.000Z",
"verificationMethod": "did:web:humanos.tech#key-1",
"proofPurpose": "authentication",
"proofValue": "z2pcVdSdoMTrkYP9rVdz..."
}
},
"presentationEncoded": "eyJAY29udGV4dCI6WyJodHRwczovL3d3dy53My5vcmcvbnMvY3JlZGVudGlhbHMvdjIiXX0="
}{
"statusCode": 400,
"message": "Credential is not ACTIVE / expired / not yet valid",
"error": "Bad Request"
}{
"statusCode": 403,
"message": "Credential is not accessible by this API key",
"error": "Forbidden"
}{
"statusCode": 404,
"message": "Credential not found",
"error": "Not Found"
}Credentials
Issue VP
Build and sign a W3C Verifiable Presentation for a stored credential. The API key must belong to the credential owner (its DID must be on the mandate authorizedDIDs). Optionally pass targetVerifier in the request body — the verifier domain, e.g. “organization.com” — to bind the VP to that audience via proof.domain and a challenge nonce; omit it for an unbound VP.
POST
/
credential
/
vp
/
{vcId}
Issue VP
curl --request POST \
--url https://api.example.com/credential/vp/{vcId} \
--header 'Content-Type: application/json' \
--data '
{
"targetVerifier": "organization.com"
}
'import requests
url = "https://api.example.com/credential/vp/{vcId}"
payload = { "targetVerifier": "organization.com" }
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({targetVerifier: 'organization.com'})
};
fetch('https://api.example.com/credential/vp/{vcId}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.example.com/credential/vp/{vcId}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'targetVerifier' => 'organization.com'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.example.com/credential/vp/{vcId}"
payload := strings.NewReader("{\n \"targetVerifier\": \"organization.com\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.example.com/credential/vp/{vcId}")
.header("Content-Type", "application/json")
.body("{\n \"targetVerifier\": \"organization.com\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.example.com/credential/vp/{vcId}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n \"targetVerifier\": \"organization.com\"\n}"
response = http.request(request)
puts response.read_body{
"presentation": {
"@context": [
"https://www.w3.org/ns/credentials/v2",
"https://via.humanos.tech/ns/v1"
],
"type": [
"VerifiablePresentation"
],
"holder": "did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000",
"verifiableCredential": {
"@context": [
"https://www.w3.org/ns/credentials/v2",
"https://via.humanos.tech/ns/v1"
],
"specVersion": "0.2",
"id": "urn:via:credential:550e8400-e29b-41d4-a716-446655440000",
"type": [
"VerifiableCredential",
"VIAMandate"
],
"issuer": "did:web:humanos.tech",
"validFrom": "2025-01-01T00:00:00Z",
"validUntil": null,
"credentialSubject": {
"id": "did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000",
"mandate": {
"grantor": "did:web:humanos.tech:user:7c9e6679-7425-40de-944b-e07fc1f90ae7",
"scope": "humanos.credential.request",
"context": {
"authorizedDIDs": [
"did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000",
"did:web:humanos.tech:user:7c9e6679-7425-40de-944b-e07fc1f90ae7"
]
}
}
},
"evidence": [
{
"id": "urn:via:evidence:9b2e4f1a-3c7d-4e8a-bf12-2a6c5d8e0f34",
"type": [
"VIAEvidence"
],
"mediaType": "application/pdf",
"digestSRI": "sha256-abc123",
"location": "https://api.humanos.tech/credential/evidence/urn:via:evidence:9b2e4f1a-3c7d-4e8a-bf12-2a6c5d8e0f34"
}
],
"proof": {
"type": "DataIntegrityProof",
"cryptosuite": "eddsa-jcs-2022",
"verificationMethod": "did:web:humanos.tech#key-1",
"created": "2026-05-02T10:15:30.000Z",
"proofPurpose": "assertionMethod",
"proofValue": "z2pcVdSdoMTrkTRrXdz...",
"event": "STAMP"
}
},
"proof": {
"type": "DataIntegrityProof",
"cryptosuite": "eddsa-jcs-2022",
"created": "2026-05-02T10:15:30.000Z",
"verificationMethod": "did:web:humanos.tech#key-1",
"proofPurpose": "authentication",
"proofValue": "z2pcVdSdoMTrkYP9rVdz..."
}
},
"presentationEncoded": "eyJAY29udGV4dCI6WyJodHRwczovL3d3dy53My5vcmcvbnMvY3JlZGVudGlhbHMvdjIiXX0="
}{
"statusCode": 400,
"message": "Credential is not ACTIVE / expired / not yet valid",
"error": "Bad Request"
}{
"statusCode": 403,
"message": "Credential is not accessible by this API key",
"error": "Forbidden"
}{
"statusCode": 404,
"message": "Credential not found",
"error": "Not Found"
}Headers
Pin request, response, and webhook shapes to a specific dated API version (YYYY-MM-DD). Omit to use the version pinned to your API key (set when the key is created; new keys default to the latest version). New integrations should target the latest version.
Pattern:
^\d{4}-\d{2}-\d{2}$Example:
"2026-09-01"
Path Parameters
URN of the credential to present.
Example:
"urn:via:credential:550e8400-e29b-41d4-a716-446655440000"
Body
application/json
Domain or subdomain of the intended verifier (e.g. "organization.com"). When provided, the VP is bound to this audience via proof.domain and a challenge nonce.
Example:
"organization.com"
Response
Signed Verifiable Presentation. The VP_CREATED fact is recorded on the credential event chain.
Signed W3C Verifiable Presentation (@context, type, holder, verifiableCredential, proof), exactly as returned by POST /credential/vp/:vcId — do not re-serialize or modify it.
Provide this or presentationEncoded (at least one is required; presentationEncoded overrides and is recommended, since a base64 string avoids JSON formatting changes that can break the signature).
Example:
{ "@context": [ "https://www.w3.org/ns/credentials/v2", "https://via.humanos.tech/ns/v1" ], "type": ["VerifiablePresentation"], "holder": "did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000", "verifiableCredential": { "@context": [ "https://www.w3.org/ns/credentials/v2", "https://via.humanos.tech/ns/v1" ], "specVersion": "0.2", "id": "urn:via:credential:550e8400-e29b-41d4-a716-446655440000", "type": ["VerifiableCredential", "VIAMandate"], "issuer": "did:web:humanos.tech", "validFrom": "2025-01-01T00:00:00Z", "validUntil": null, "credentialSubject": { "id": "did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000", "mandate": { "grantor": "did:web:humanos.tech:user:7c9e6679-7425-40de-944b-e07fc1f90ae7", "scope": "humanos.credential.request", "context": { "authorizedDIDs": [ "did:web:humanos.tech:org:550e8400-e29b-41d4-a716-446655440000", "did:web:humanos.tech:user:7c9e6679-7425-40de-944b-e07fc1f90ae7" ] } } }, "evidence": [ { "id": "urn:via:evidence:9b2e4f1a-3c7d-4e8a-bf12-2a6c5d8e0f34", "type": ["VIAEvidence"], "mediaType": "application/pdf", "digestSRI": "sha256-abc123", "location": "https://api.humanos.tech/credential/evidence/urn:via:evidence:9b2e4f1a-3c7d-4e8a-bf12-2a6c5d8e0f34" } ], "proof": { "type": "DataIntegrityProof", "cryptosuite": "eddsa-jcs-2022", "verificationMethod": "did:web:humanos.tech#key-1", "created": "2026-05-02T10:15:30.000Z", "proofPurpose": "assertionMethod", "proofValue": "z2pcVdSdoMTrkTRrXdz...", "event": "STAMP" } }, "proof": { "type": "DataIntegrityProof", "cryptosuite": "eddsa-jcs-2022", "created": "2026-05-02T10:15:30.000Z", "verificationMethod": "did:web:humanos.tech#key-1", "proofPurpose": "authentication", "proofValue": "z2pcVdSdoMTrkYP9rVdz..." } }
Base64-encoded JSON of the signed Verifiable Presentation above.
Pass it back to POST /credential/verify as presentationEncoded (recommended) to avoid signature failures caused by JSON re-serialization in some HTTP clients.
Example:
"eyJAY29udGV4dCI6WyJodHRwczovL3d3dy53My5vcmcvbnMvY3JlZGVudGlhbHMvdjIiXX0="