Crypto-Settled International Payment Gateway

I want to start processing credit/debit card payments from customers worldwide in three major currencies—USD, EUR, and GBP—but instead of the daily payout hitting a bank account, I need every settlement pushed straight into my own crypto wallets. I’m already set up to receive Bitcoin, Ethereum, and USDT, so the gateway has to convert each completed transaction into one of those coins and release the funds automatically.

Key things I’m after:
• An end-to-end payment gateway (API, hosted checkout, or plug-in—whichever you feel is fastest to deploy) that can accept the three fiat currencies above.
• Real-time conversion and settlement to BTC, ETH, or USDT, routed to the wallet addresses I’ll provide.
• Clear, developer-friendly documentation so my team can integrate it into our site without relying on proprietary SDKs.
• A simple dashboard or webhook reporting so I can reconcile transactions.

Fraud-screening modules aren’t required this time; I’m handling that on my side. I’m mostly interested in a rock-solid flow from customer payment to crypto settlement.

When you reply, please outline:
1. The gateway architecture you’d build or customize.
2. Any third-party services or on-chain swaps you plan to use for the fiat-to-crypto leg.
3. The estimated timeline to deliver a functioning sandbox, followed by live deployment.

If you’ve done something similar—especially anything that skips the banking layer entirely—let’s move fast.