Request.network

Payment architecture allowing for the request of payment initiated by the payee to the payer. Requests are recorded and settled on the Ethereum blockchain. The payee wallet initiates payment request and is delivered to the payer wallet.  Each wallet can have it's own preferred currency and exchange between currencies automatically happens in the background in case they are different.

Project Home Page: https://request.network/

Whitepaper: https://request.network/assets/pdf/whitepaper.pdf

This is of particular interest because of their use of existing building blocks in the ecosystem as part of their architecture and solution.  Read about details of their Identity, Exchange, and Governance models on their blog post here:  https://blog.request.network/blockchain-bricks-request-is-built-upon-0x-civic-and-aragon-3aaf68390221

Civic :: for Identity

0x :: for exchanging the currency at time of payment

Aragon :: Protocol governance framework