Re: [paymentrequest] Payment methods registering to handle schemes / Interledger support (in the future) (#14)

With the new [Web Payments WG definitions](https://github.com/w3c/webpayments/wiki/A-Payments-Initiation-Architecture-for-the-Web#user-content-definitions) the model appears to support your request: multiple different payment apps might support the same payment method. It will likely be up to the user agent to mediate between the different apps. Presumably the [registration flow for a payment app](http://wicg.github.io/paymentrequest/specs/architecture.html#payment-method-registration-specifications) would include which payment method identifiers it supports.

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https://github.com/WICG/paymentrequest/issues/14#issuecomment-162732582