Manta Protocol

Manta is designed to be a safe, crypto agnostic, privacy friendly payment protocol.

Glossary

Manta defines the transaction flow between three entities:

Merchant

It’s the initiator of the single payment transaction. It requires that some amount of money is paid by a Wallet and to do so it exchanges messages only with a Payment Processor. It’s also called Store in the code.

Payment Processor

As the name suggests, it manages the payment process in its entirety. The other two parties never communicate directly but they exchange messages with it.

Wallet

End user who visits merchant’s web site, orders goods and/or service and pays for it.

Technologies Used

JSON

JavaScript Object Notation is de facto standard for data serialization, and was standardized as RFC 8259.

MQTT

Message Queuing Telemetry Transport is an ISO standard (ISO/IEC PRF 20922) publish-subscribe-based messaging protocol.

Information exchange is organized in topics and clients communicates directly only with the broker service. A client can instruct the broker to retain a published message so that it can be delivered to future subscribers whose subscriptions match its topic name.

Communication protocol

Standard MQTT is used for communication between all the three parties. The exchanged messages are encoded in JSON format.

High level overview of Manta Protocol

• Parameters
• Flow
  • Merchant
  • Payment Processor
  • Manta enabled wallet
  • Complete Manta flow diagram
• Messages
  • Ack
  • Merchant Order Request
  • Payment Request Message
  • Payment
• Topics
  • acks/{session_id}
  • certificate
  • merchant_order_cancel/{session_id}
  • merchant_order_request/{application_id}
  • payment_requests/{session_id}
  • payment_requests/{session_id}/{crypto_currency}
  • payments/{session_id}