DIP: P2P, offline-first contact, payment, and subscription exchange

[coolaj86]

Preview

https://github.com/dashhive/DIPs/blob/aj-contact-scanback/aj-contact-scanback.md

In Short

Dash URIs & HTTPS URLs for exchanging contact, payment, and subscription data

• HTTPS URL and Dash URI schemes
• exchange Contact info
• request payment
• send denominated coins (no unmixing)
• send private keys as payment (i.e. trusted contacts, offline mode)
• p2p whether offline or online

TODOs

There are still some TODOs in here.

Unlike some of the other DIPs, this hasn't been implemented in a working product yet, so there's still discovery to do in figuring out the ergonomics and practical use cases.

[coolaj86]

Must Have: Register Protocol Handler

Must also allow web+dash to be compatible with modern browsers.

https://developer.mozilla.org/en-US/docs/Web/Manifest/protocol_handlers

"protocol_handlers": [
    {
      "protocol": "web+dash",
      "url": "/wallet-ui/contact?to=%s"
    }
  ]