DogeConnect

What is DogeConnect?

DogeConnect is a payment protocol for transmitting a detail-rich Payment Request from a Vendor to a Client Wallet and receiving a Payment Response containing a signed transaction, which is validated and relayed to the network by a Payment Relay.

Note: this specification is ready to implement; please provide implementation feedback.

DogeConnect comprises:

• a Payment QR Code specification,
• a Payment Envelope JSON schema,
• an API specification for an internet Payment Relay.

Through DogeConnect, Vendors can issue detailed payment requests to customers with itemised goods and services as well as taxes and fees, which the Client Wallet can display to the user along with the vendor's name and logo.

In the DogeConnect model, the vendor or their nominated Payment Relay validates the transaction and determines their desired risk appetite, the number of blockchain confirmations they require, etc.

sequenceDiagram
   participant w as Wallet
   participant c as Client
   participant v as Vendor
   participant r as Relay

   c ->> v: Let me buy something
   v ->> r: Start payment (itemised payment info)
   r ->> v: QR Code URI, payment ID
   v ->> c: QR Code URI
   c ->> w: Scans QR Code / NFC
   w ->> r: Fetch Payment Envelope
   r ->> w: Payment Envelope
   w ->> w: Verify Hash (MITM)
   w ->> w: Display itemised payment
   w ->> w: Confirm/sign transaction
   w ->> r: Submit signed transaction
   r ->> r: Validate transaction
   r ->> r: Submit to dogecoin network
   r -->> v: Payment accepted
   r ->> r: Wait for confirmation
   r -->> v: Payment confirmed