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Verify payments via HMAC-SHA256 signed webhooks\n\n## Key Rules\n\n- No API key required — merchant identity = wallet address\n- `order_id` is required on every session creation request\n- `webhook_secret` is required whenever `webhook_url` is set\n- Sessions expire after 30 minutes\n- Never modify `checkout_url` after receiving it\n- Webhooks are the authoritative payment signal — only treat `event: payment.confirmed` / `status: confirmed` as paid\n- No sandbox — all sessions are live. Use small amounts ($1–$10) for testing.\n\n## Domains\n\n- **API**: https://payapi.verifiedcryptocheckout.com\n- **Hosted Checkout**: https://pay.verifiedcryptocheckout.com\n\n## Support\n\ncryptocheckout@verifiedcreditcardprocessing.com","schema":"https://schema.getpostman.com/json/collection/v2.0.0/collection.json","isPublicCollection":false,"owner":"53498215","team":14554896,"collectionId":"69b0cfee-802b-4727-bd7b-b013e89bb889","publishedId":"2sBXinHAaA","public":true,"publicUrl":"https://documenter-api.postman.tech/view/53498215/2sBXinHAaA","privateUrl":"https://go.postman.co/documentation/53498215-69b0cfee-802b-4727-bd7b-b013e89bb889","customColor":{"top-bar":"FFFFFF","right-sidebar":"303030","highlight":"FF6C37"},"documentationLayout":"classic-double-column","customisation":{"metaTags":[{"name":"description","value":"Hosted payment session API for card acceptance — Visa, Mastercard, Apple Pay, Google Pay. Session creation, HMAC-SHA256 webhook verification, and error handling. 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