ZADA is a data processing ecosystem that utilizes W3C standards such as Verifiable Credentials (VC) to ensure digital credentials can be exchanged in a decentralised way and be interoperable.
There are three actors involved in ZADA ecosystem:
Issuer and Verifiers can run their custom applications on their servers and attach databases as data controllers, and have full autonomy over their data and its processing. ZADA Core API enables issuer and verifiers to run applications independently on their servers and still be able to issue credentials and verify them via our restful API services.
Holders in ZADA ecosystem use ZADA Wallet to accept/store/manage their digital credentials. The ZADA Wallet is an open-source app that ensures transparency. Developed with a privacy-first principle, it ensures the data is encrypted both at rest and transit, and the holder is in full control.
A Digital Ledger is part of ZADA’s infrastructure to store credential’s decentralized identifiers (DID) so they can be verified in a decentralized way.
Note: No PII, personal or credential data is ever stored at the ledger, only DIDs and some metadata regarding DIDs is stored on blockchain ledger. Cryptography technology (PKI public/private key) makes the credentials tamper-proof and secure.