Portable Reputation Using SSI
Portable Reputation Using SSI
Session: 16E
Convener: Mike Richardson & Geomina Richardson
Notes-taker(s): Geomina Richardson
Tags for the session - technology discussed/ideas considered:
Discussion notes, key understandings, outstanding questions, observations, and, if appropriate to this discussion: action items, next steps:
Mike Richardson, CTO; together with Geomina Richardson CEO, presented EuroLedger’s commercial SSI solution for reputation portability, CAPENA.
They presented the CAPENA pitch-deck and explained the solution, which include a proxy issuer DELEGA@CAPENA, a dapp PORTA@CAPENA and a plug-in, APPIA@CAPENA.
The proxy issuer acts as a notarizer to issue credentials on behalf of upstream platforms, such as eBay or Uber, by interacting with those platforms' public APIs to retrieve user credentials and issue them to the holder, via an Aries agent.
The dapp allows online sellers and buyers to monitor how the ecosystem of digital marketplaces perceives them, in addition to presenting (ie transferring) verifiable credentials based on public ratings between marketplaces.
The plugin is a generic library based on the Aries framework which allow marketplaces who wish to accept ratings from upstream platforms to conduct rating verification requests on demand from users and receive reputation credentials, all with user permission. The plugin will be integrated with downstream platforms allowing them to use credentials in their system. The system works by issuing credentials (via a proxy or notarizer) to replace the actual upstream issuer: the holder then approves those credentials (which means the keys and other identifiers get written to the ledger in the form of Decentralized Identifiers – DIDs).
Downstream platforms then request a “proof”, which is a verification of a user’s credentials. It does this by establishing a point to point connection with the user; once established the credentials are presented via the ledger.
Christian Hildebrand shared his previous experience with Personal Management Information Systems and raised specific points on the business model – highlighting the need to work closer with the issuer. Christian proposed an approach related with the concept of trusted store, by which DELEGA@CAPENA, our proxy issuer could provide a recognised seal of trust on reputation portability transactions.
Mark O. Scott was very favourable to the idea and provided potential contacts in the business area. The participants considered the technology setting and approach was ideal for the use case.
Would you be interested to consult the pitch-deck and find out more about the project, please contact Euroledger at: geominat@gmail.com
