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  • GITHUB
    • 🐘 SDK PHP
    • 👨‍💻 SDK GOLANG
    • ✳️ SDK NODE JS
  • AUTHENTICATION
    • 👨‍💼 User authentication
    • 👨‍💼 User registration
    • 🔐 Password recovery
  • INFORMATION
    • 🆕 Adding a new address
    • 🆎 Getting information at the address
    • 🔍 Search for supported cryptocurrencies at
    • 💰 Available currencies
  • RISK CHECK
    • 📑 Getting a list of quick checks
    • 🆕 Adding a new quick check
    • 📊 Getting information on quick verification
    • 🔄 Launching a quick check
  • INVESTIGATION
    • 📝 Getting a list of investigations
    • 🕵️‍♂️ Creating an investigation
    • 📋 Receiving information on the investigation
    • 📊 Getting data on the investigation graph
    • 🧐 In-depth investigation within the framework of the investigation
    • 🔄 Investigation launch
  • BALANCES
    • 💰 Getting user`s balance
    • 📜 Creating a payment invoice
    • 💵 Currencies allowed for replenishment
  • KYC VERIFICATION
    • 🆕 Create KYC verification
    • 📑 List KYC verifications
    • ▶️ Start verification session
    • 📷 Upload photos and documents
    • 📋 Get verification details
    • ⚙️ Get session parameters
    • 🔄 Update verification step
    • 🔍 Check document data
    • 👁️ Start liveness check
    • ✅ Verify liveness data
    • 🔤 Recognize document (OCR)

👁️ Start Liveness Check

Code samples

POST /webapi/kyc/user/{uuid}/liveness/start

🛠️ Parameters

NameInTypeRequiredDescription
uuidpathstring(uuid)trueVerification UUID

Example responses

200 Response

{
  "success": true,
  "challengeToken": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
  "challenges": [
    { "index": 0, "type": "blink" },
    { "index": 1, "type": "turn_left" },
    { "index": 2, "type": "smile" }
  ],
  "timeoutSeconds": 30
}

🔁 Responses

StatusMeaningDescriptionSchema
200OKChallenges generatedInline
404Not FoundVerification not foundInline
422Unprocessable EntityValidation errorInline

📋 Response Schema

NameTypeDescription
successbooleanOperation success
challengeTokenstringJWT token with signed challenges
challengesobject[]List of challenges for the user
timeoutSecondsintegerTime allowed to complete challenges (seconds)
No authentication required for this endpoint
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🔍 Check document data
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✅ Verify liveness data