Key facts
- HMAC-SHA256 signing
- Automatic retry schedule
- Event types for full payment lifecycle
What this means
X-CM-Signature header with timestamp; replay protection; delivery logs and manual resend.
Step-by-step
- Register webhook endpoint.
- Verify signature on each delivery.
- Update order status and fulfill.
Next step
Next steps
Related tools
Related guides
FAQ
Example event payload?
See /usdt-checkout/docs for webhook format and verification code.
The Solana launch trust layer — free mint, public Launch Score, paid trust actions.