This is a simple demo for a device wallet used by DID and IOTA Tangle. We construct a open and public backbone to authenticate and audit the credentials that issue from 4 actors:

• User-A
• User-B
• Car-X
• Verifier

According the scenario picture as above, we assume:

1. A DID (driver A) connect (authenticate) to a DID (car X)

2. The DID (driver A) issue events by DID (car X)

3. A DID (driver A) disconnect to a DID (car X)

4. B DID (driver B) connect (authenticate) to a DID (car X)

5. The DID (driver B) issue events by DID (car X)

6. B DID (driver B) disconnect to a DID (car X)

7. A verifier audit the footprint from the DID (car X) of blockchain.

1. Self-sovereign identity.
2. Settlement at any time.
3. A public blockchain backbone to access data easily.
4. Conform to the DID verifiable claims specifications to keep the 3rd party service to bridge.

1. Credential: A connected X
2. Credentials: Foot print from A
3. Credential: A disconnected X
4. Credential: B connected X
5. Credentials: Foot print from B
6. Credential: B disconnected X

• RSA Signature/Generation & Validation

• Deposit and withdraw
• DID VC well-form