Protocol Design

There are three layers to the passcard + blockchain name system protocol (BNS):

At the bottom is the decentralized key-value store, which stores the information for each identity. Some examples are Namecoin and Blockstore (on the Bitcoin blockchain), but the protocol is ultimately key-value store and blockchain agnostic.

In the middle is the blockchain name system, which is responsible for resolving the data stored in the key-value store.

At the top is the passcard identity layer. Passcards refer to user identities and how they are represented, whether that be visually or in raw data format.

Blockchain Name System Diagram-1