Users on Sublime can link their wallet addresses to their digital identities using one of the supported verification methods. Verification is necessary for those looking to borrow using Pools, while for lenders and credit line borrowers, verification is optional.
Verification is performed via special roles called verifiers. A unique verifier exists for every unique identity mapping - for eg, verification via Twitter, Github, or Twitch would each be controlled by unique verifiers.
Connecting multiple identities allows users to accrue more credibility to their profile. Additionally, it allows for social graph filtering and whitelisting, since users can now choose which participants they wish to interact with - for eg, some lenders might only be comfortable interacting with borrowers who've linked their Twitter accounts, or institutions might only wish to interact with other verified institutions.
Since every verifier acts independently, they can enforce additional KYC steps in their verification process that can be performed either on-chain or off-chain. For example, an institutional verifier can store identifiers off-chain, only publishing the list of whitelisted addresses on-chain. Institutions can then enforce verification by the institutional verifier as a pre-requisite for anyone to interact with them.
Verifiers can be onboarded via governance.