If I would like to build an exchange...

[ysdk]

What payment service providers would be willing to work with me?

I can buy BTC from coinbase via credit card but I can't find a payment service provider (like Paypal or Stripe) willing to offer their service to somebody exchanging BTC (or any other crypto) 

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[OmegaStarScream]

It's unclear what you're trying to achieve here. If you want to build something like Bittrex, Bitfinex etc. then there is no other way but to run your own node and do everything yourself but If you want to sell your BTC for PayPal for example then you could use some combination of different APIs like PayPal API + BlockTrail etc.

[arunchain]

Hello
I have read your description and if you want to build an exchange, then you don't need to integrate Paypal or Stripe, Users can directly buy another coin through Fiat Currencies like USD or any other, which you want to keep.

Rest, if you want to exchange BTC with any other payment gateway, we can use Braintree for it as Paypal doesn't support directly for the exchange of BTC.

So for further discussion, please let me know your contact details or you can directly contact me at arun@revinfotech.com

Thanks

[Kramblerty]

What payment service providers would be willing to work with me?

I can buy BTC from coinbase via credit card but I can't find a payment service provider (like Paypal or Stripe) willing to offer their service to somebody exchanging BTC (or any other crypto) 

The problem that you are described (as I understand it) can be solved through using p2p type of exchanges like Local bitcoins or any new one like that

[ysdk]

Thanks for your input!

I am sorry I just realised that I was not specific enough. I've been wanting to build a service platform to offer services where people were not restricted to use a certain currency for certain services like paying a transaction fee. So imagine something like MEW for ethereum with the difference that you can pay tx fees with Euros or  BTC.

Rest, if you want to exchange BTC with any other payment gateway, we can use Braintree for it as Paypal doesn't support directly for the exchange of BTC.

My problem is this right here: Braintree acceptable use policy: https://www.braintreepayments.com/legal/acceptable-use-policy

but If you want to sell your BTC for PayPal for example then you could use some combination of different APIs like PayPal API + BlockTrail etc.

Wouldn't Paypal block my API key as soon as the visit my site? Here their acceptable use policy: https://www.paypal.com/us/webapps/mpp/ua/acceptableuse-full