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@startuml
' This is a PlantUML diagram, see https://plantuml.com/
autonumber
Actor "Payer (Shopper) Browser" as Payer
Participant "Payee (Merchant) Site" as Payee
Participant "Taler Exchange" as Exchange
note over Payer, Payee: Tor/HTTPS
note over Payee, Exchange: HTTP/HTTPS
title Taler (Payment)
== Order Creation/Claiming ==
Payer->Payee: Choose product(s) to buy on merchant's Website
Payee->Payee: Create order
Payee->Payer: Send taler://pay URI that identifies order
Payer->Payee: Claim order ownership with nonce
Payer->Payer: Display contract terms
== Payment Execution ==
Payer->Payer: Confirm payment
Payer->Payee: Send payment
Payee->Exchange: Forward payment
Exchange->Payee: Confirm payment
Payee->Payer: Confirm payment
== Fulfilment ==
Payer->Payee: Navigate to fulfillment URL
Payee->Payer: Provide product resource
@enduml
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