Version: CP v. 2

KYC API

All endpoints are on https://auth.corepass.net and require your API key:

Authorization: <YOUR_API_KEY>

Successful responses use a standard envelope:

{ "data": { }, "message": "…", "success": true }

Errors use the same HTTP status code in the body:

{ "success": false, "error": { "code": 422, "message": "there is already an ongoing request" } }

Check which fields are verified

GET /api/v1/blockchain/verified

Pass the user's CoreID and the fields as query parameters. Repeat items once per field.

Request
curl -G "https://auth.corepass.net/api/v1/blockchain/verified" \
  -H "Authorization: <YOUR_API_KEY>" \
  --data-urlencode "user=ab22b1671b4f7ccc0b16a87514adde84513b6348232e" \
  --data-urlencode "items=IDCARD_DOB" \
  --data-urlencode "items=DRIVER_LICENSE_DOCUMENT_NUMBER" \
  --data-urlencode "items=EMAIL"

Response
{
  "data": {
    "verifiedItems": ["EMAIL"],
    "unVerifiedItems": ["IDCARD_DOB", "DRIVER_LICENSE_DOCUMENT_NUMBER"]
  },
  "message": "Items were successfully checked.",
  "success": true
}

Either list is omitted when it is empty. If a field you need is in unVerifiedItems, ask the user to complete that verification in the CorePass app first. Otherwise the next call fails with 422 unverified fields.

Generate a KYC QR code

POST /api/v2/kyc/qrcode

Creates the data-transfer order and returns a QR code and a deep link for the user.

Request
curl -X POST https://auth.corepass.net/api/v2/kyc/qrcode \
  -H "Authorization: <YOUR_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "user": "ab72a31c718d343b45e558099ec503087f734433785d",
    "sourceKey": "<YOUR_SOURCE_KEY>",
    "callback": "https://api.example.com/corepass/callback",
    "expiration": 1748000000
  }'

Field	Required	Description
`user`	yes	The user's CoreID (hex, from the JWT `sub` claim without the `coreid:` prefix).
`sourceKey`	yes	The Source Key of one of your packages, from the dashboard's Packages page. It identifies your client, the package to bill, and the webhook signing key.
`callback`	yes	HTTPS URL that receives all webhooks for this order: status updates and the delivered data. See Webhooks.
`expiration`	yes	Unix time in seconds, 5–15 minutes in the future. This is how long the user has to accept. Any other value returns `400`.
`fields`	no	The fields to request. Only for packages without a fixed field set; see Choosing fields.
`optionalFields`	no	Fields the user may choose to share or not. Same rule as `fields`.
`statusCallback`	no	Accepted for compatibility. Status updates are delivered to `callback`.
`withoutQRCode`	no	Accepted for compatibility.

Response
{
  "data": {
    "qrcode": "<BASE64 PNG>",
    "link": "<deep link for a mobile button>",
    "expiration": 1748000000,
    "referenceKey": "<REFERENCE_KEY>"
  },
  "message": "QRCode has been successfully generated",
  "success": true
}

Show qrcode to desktop users and link to mobile users:

Rendering the request
<!-- Desktop: scan with the CorePass app -->
<img alt="Scan with CorePass" src="data:image/png;base64,{{qrcode}}" />

<!-- Mobile: open the CorePass app directly -->
<a class="button" href="{{link}}">Share with CorePass</a>

Save the referenceKey

You need it to query the order's status. It is derived from the Source Key, the user and the requested fields, so the same request always gets the same referenceKey.

Repeated calls. If you call again with the same user, Source Key and fields while the order is still PENDING, you get a fresh QR code for the same order with "alreadySent": true. While the order is being processed (INITIATING, INITIATED or CONFIRMING), the call fails with 422.

Errors

Status	`error.message`	Cause
`400`	`Invalid Request: …`	A required field is missing or malformed.
`400`	`expiration time is not in valid range`	`expiration` is not Unix seconds 5–15 minutes in the future.
`400`	`no fields provided`	Neither the package nor the request names any fields.
`400`	`user fields (…) are invalid fields`	A name in `fields` / `optionalFields` isn't a KYC field.
`400`	`sourcekey does not support dynamic fields`	You sent `fields` / `optionalFields` for a package that has a fixed field set.
`404`	`source key not found`	Unknown `sourceKey`.
`422`	`unverified fields`	At least one requested field isn't verified in the user's CorePass app.
`422`	`there is already an ongoing request`	An order for the same user, package and fields is being processed.

Poll the latest status

GET /api/v2/kyc/status?referenceKey=…

Request
curl "https://auth.corepass.net/api/v2/kyc/status?referenceKey=<REFERENCE_KEY>" \
  -H "Authorization: <YOUR_API_KEY>"

Response
{
  "data": {
    "status": "CONFIRMING",
    "createdAt": 1677255348,
    "initiatedTxHash": "0xd90eb185877e47238380f613e3ac77f4cdb6a293ae21019fea7ac1b9ce12a94e"
  },
  "message": "status has been sent successfully",
  "success": true
}

Field	Meaning
`status`	One of the status values.
`createdAt`	When the order reached this status (Unix seconds).
`initiatedTxHash`	Hash of the on-chain initiate transaction, once it exists.
`confirmTxHash`	Hash of the on-chain confirm transaction, once it exists.
`failureReason`	Present when `status` is `FAILED`. See Failure reasons.

Empty fields are omitted. An unknown referenceKey returns 404 order not found.

Fetch the full status history

GET /api/v2/kyc/all-statuses?referenceKey=…

Request
curl "https://auth.corepass.net/api/v2/kyc/all-statuses?referenceKey=<REFERENCE_KEY>" \
  -H "Authorization: <YOUR_API_KEY>"

Response
{
  "data": {
    "allStatuses": [
      { "status": "PENDING", "createdAt": 1677255257 },
      { "status": "INITIATING", "createdAt": 1677255317 },
      { "status": "INITIATED", "createdAt": 1677255329, "initiatedTxHash": "0xd90e…" }
    ]
  },
  "message": "all statuses has sent successfully",
  "success": true
}

Each entry has the same fields as the latest-status response.

Check that stored data is still valid

POST /api/v1/blockchain/valid

KYC data can expire or be revoked, for example after fraud or when the user updates their documents. Check a stored value before you rely on it.

Request
curl -X POST https://auth.corepass.net/api/v1/blockchain/valid \
  -H "Authorization: <YOUR_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "user": "ab701b918efb6289a5077f6510740b4bca7f707dbad7",
    "infos": [
      { "field": "ADDRESS_CITY",    "data": "Zurich", "pepper": "72b69fbed02d5acbe4aa58d38be4e32283952edc56e9338c4db57bc0ea9b8d4a" },
      { "field": "ADDRESS_COUNTRY", "data": "CHE",    "pepper": "47aa3e25b647f47488d429d4cf3cd21d927f89d7e9f25c060c7d915d3c901123" }
    ]
  }'

Field	Value
`field`	The field name.
`data`	The field value as text, i.e. the Base64-decoded `data` from the webhook.
`pepper`	The pepper as a hex string: Base64-decode `pepper` from the webhook, then hex-encode the bytes.

Response
{
  "data": { "valids": ["ADDRESS_COUNTRY"], "unValids": ["ADDRESS_CITY"] },
  "message": "user was successfully checked.",
  "success": true
}

Check which fields are verified​

Generate a KYC QR code​

Poll the latest status​

Fetch the full status history​

Check that stored data is still valid​

Check which fields are verified

Generate a KYC QR code

Poll the latest status

Fetch the full status history

Check that stored data is still valid