Register a crypto transfer with Chainalysis KYT v2 API for deposit screening

Steps

1. Authenticate: set the Token header to YOUR_API_KEY on all requests to https://api.chainalysis.com
2. Register an incoming deposit for monitoring: POST https://api.chainalysis.com/api/kyt/v2/users/{userId}/transfers with body: {"network": "ETHEREUM", "asset": "USDC", "transferReference": "<txHash>:0", "direction": "RECEIVED"}
3. Poll GET /api/kyt/v2/users/{userId}/transfers/{transferReference} or wait for the updated_alerts webhook; the rating field (LOW/MEDIUM/HIGH/SEVERE) reflects the current risk assessment
4. Retrieve alerts: GET /api/kyt/v2/alerts?transferReference=<ref> to get structured alert objects including externalId, alertLevel, and category
5. For high-severity alerts (HIGH or SEVERE), place a hold on the associated user account and initiate enhanced due diligence per your AML policy
6. Resolve alerts after review: PUT /api/kyt/v2/alerts/{alertId} with {"status": "REJECTED", "comment": "<disposition_note>"} or ACCEPTED to record compliance decisions