Maintaining Trust and Privacy of Personal Data with Blockchains John Domingue (Professor, The Open University)

1. Maintaining Trust and Privacy of
Personal Data with Blockchains
Prof. John Domingue, Director Knowledge Media Institute,
The Open University
@johndmk
kmi.open.ac.uk
blockchain.open.ac.uk

2. “We demonstrated that the Web had failed instead
of served humanity, as it was supposed to have
done, and failed in many places,” he told me. The
increasing centralization of the Web, he says, has
“ended up producing—with no deliberate action of
the people who designed the platform—a large-
scale emergent phenomenon which is anti-
human.”

3. I’m not a dog
https://www.theguardian.com/commentisfree/2018/mar/28/all-the-data-facebook-google-has-on-you-privacy
• 5.5 GB
• Everywhere you’ve
been
• Everything you’ve
ever searched (and
deleted)
• Advertisement profile
• All the apps you use
• All your YouTube
history

4. 2 Billion Unbanked2 Billion UnbankedThin Files and the Data Poor

5. 2 Billion Unbanked2 Billion Unbanked2 Billion Unbanked

6. 2 Billion Unbanked2 Billion UnbankedWindrush Scandal
http://www.theweek.co.uk/92944/who-are-the-windrush-generation-and-why-are-they-facing-deportation

7. Ledgers
Ledger

8. Blockchain = an Immutable Linked List
Hash
File
Hash

9. Blockchain = an Immutable Linked List
Hash
File
Immutable Blocks

10. Blockchain = an Immutable Linked List
Hash
File
Peer to Peer

11. 2 Billion Unbanked
https://rubenverborgh.github.io/Solid-DeSemWeb-2018/
Solid

12. 2 Billion Unbanked2 Billion UnbankedSelf Sovereignty

13. 2 Billion Unbanked2 Billion UnbankedLinkChains
SOLID Personal
Data Pod
Distributed data storage
Web/Mobile
Application or Client
Private data
soley under
user control
Public and private data
Decentralised ledger and
‘global computer’
Public and
private data
storage and
access
Web/Mobile
Application or Client
Private data
solely under
user control
Public and private data
Decentralized ledger and
‘global computer’

14. 2 Billion Unbanked2 Billion Unbanked
LinkChains
Learning Record IPFS IPFS
IPFSIPFS
Solid Personal
Data Pod
IPFS distributed data
storage
Token Metadata incl.
Student Solid URLs
Signed token metadata URL
and badge issuing contracts
Storing and
retrieving
token
metadata

15. Institute of Coding

16. blockchain.open.ac.uk