Thinking out loud about how identity and the blockchain might come together, if we can be clear about what identity is and what a blockchain is.

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The Blockchain and Identity
The 3D-ID model and why we might want
to store CRUD on the shared ledger
Dutch Blockchain Congress
Amsterdam
June 2016

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David G.W. Birch
Director of Innovation at Consult Hyperion,
Visiting Professor, University of Surrey Business School
An internationally-recognised thought leader in
digital identity and digital money;
Named one of the global top 15 favourite sources of
business information (Wired magazine);
In the London FinTech top 10 most influential
commentators (City A.M.);
One of the top ten Twitter accounts followed by
innovators, along with Bill Gates and Richard
Branson (PR Daily);
One of the top ten most influential voices in banking
(Financial Brand);
Named one of the “Fintech Titans” (NextBank);
Ranked Europe’s most influential commentator on
emerging payments (Total Payments magazine).
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Structure
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A simple “three domain” model to help us think about
digital identity and its relationship to shared ledgers.
An explanation (!) of why a shared ledger for identity
transactions might be innovative.
A discussion of practical options.

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Digital Identity Model
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Digital Identity
A simple model to aid discussion

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Identification Problem: Trolls
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People should be able to interact
pseudonymously!
Linking virtual identities to digital
identities is easy so just do it!
Let people have lots of virtual identities!

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A Three Domain Model
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Identification Domain
Binding a digital identity to a mundane identity is expensive
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Authentication Domain
For the foreseeable future, mobile the mass market
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Authorisation Domain
Allow me to… get on a plane
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Adding a Shared Ledger
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Where is the Connection?
How do we connect identity to the
blockchain or any other kind of
shared ledger?

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3D-ID and the Shared Ledger
Hpw do we connect identity to a blockchain (or any other shared ledger) then?
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Identification Domain
We could put “real” identity to the blockchain
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Authentication Domain
We can put the digital identity (ie, a key pair) on the blockchain (ie, a wallet)
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Authorisation Domain
The blockchain as an immutable history of (pseudonymous) virtual identites
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So What?
Identity as a shared ledger application
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A Worked Example
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KYC Thought Experiment
OK, is this a mass market solution?

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A Blockchain Implementation
Implement the identity ledger as a layer on the blockchain (eg, Blockstream)
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A Blockchain Implementation
Implement the identity ledger as a layer on the blockchain (eg, Blockstream)
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Customer Presents
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The customer wants to do
something, like log in to a
bank or something similar
The customer points to a
financial services identity
smart contract on the
blockchain – sends a
transactions to the bank
smart contract

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Customer Authenticates
The customer demonstrates they have access to the private key (the wallet)
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Contact
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Browse www.chyp.com
Follow @chyppings
Mail info@chyp.com
Comment http://www.chyp.com/media/blog/
Listen http://www.chyp.com/media/podcasts/
Consult Hyperion UK
Tweed House, 12 The Mount
Guildford, Surrey GU24HN, UK.
+44 1483 301793
Consult Hyperion USA
535 Madison Avenue, 19th Floor
New York, NY 10022, USA.
+1 888 835 6124

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Who Are Consult Hyperion?
Consult Hyperion specialises in working out the
opportunities and threats which result from the
harmony and collision of security, networks and
transactions.
We are constantly assessing these factors, as they
change continuously, and delivering ideas, solutions
and products to our clients
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Who Do They Work?
We have a structured and practical approach to secure
electronic transaction systems from the local to the global
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Strategy
Roadmapping
Market Analysis
Business Modelling
Prototyping
Requirements Analysis
Risk Analysis
System Architecture
Technical Specification
Procurement Support
Software Development
Vendor Management
Project Management
Certification Management
Acceptance Testing
Evaluation
We can help clients in all phases of the product and service lifecycle, from the whiteboard scribble to
the person in the street’s everyday use

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Consult Hyperion…
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Learn the world of tomorrow’s transactions
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