"The ethereum Experience" was a presentation by Dr Gavin Wood hosted at the ethereum London Meetup. Gavin presents an exclusive update in the latest developments of the ethereum platform, including some never-seen-before UI mockups of what ethereum might eventually look like at launch. Gavin also covers a more generalist view of ethereum and how it could fit in a zero-trust, decentralized 'Web 3.0' model as part of an ecosystem of decentralized content distribution, messaging and networking. For the video of the event (which will be posted from the 12 May 2014 onwards), please see our YouTube Channel : https://www.youtube.com/user/ethereumproject For more ethereum meetups in London, please visit http://www.meetup.com/ethereum/ For more information about ethereum please visit https://www.ethereum.org/

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The
ethereum
Experience

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Universal transaction ledger
Protocol determines:
order
meaning
in terms of state change

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Arbitrary state stored between transactions
Arbitrary state changes due to transactions
thus
Provides arbitration & enforcement for
agreements with arbitrary mechanics

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In short
The Crypto-social-contract.
or
Crypto-Law

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Proof-of-Concept V
Significant changes
Ether sale

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Proof-of-Concept V
Web-Tech API
Mutan, Serpent, LLL
Explorer, Debugger
Out soon!

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Significant Changes
Caller pays
Blockchain rent
Contracts as objects (no EXTRO)
Proof-of-Work

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Contracts as objects (no EXTRO)
Cleaner contract inter-op
Sell data in Ethereum as a service

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Proof-of-Work
General-purpose computation
Memory-hard
ASIC would be Ethereum transaction processor
:-)

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Ether sale

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Ether sale
Bear with us
“2 weeks out”
(80% chance it'll happen in a month)

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Act 2.0

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SQL &c.
|
Web Server = Backend
PHP, Node.js, ...
|
browser
|
WebApp/Site = Frontend
HTML/CSS/JS
Local
Remote
:-(
Bad Old
Days

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Problem
Underlying technology predicated on:
Trust (in “authorities”)
Centralisation & specifity

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Trust
Cost of Meddling: ~£0
(Marginal) Cost of Attacking: ~£0
If you must trust, trust people, not orgs!

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Centralisation
Easily made
Easily broken (into)

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Solution?

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Honesty.

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Divide, conquer and be honest
Public? Spread far & wide.
Private? Encrypt, (sign,) spread far & wide.
Agreed? Sign, form consensus, spread far & wide.
Always, automatically, between ourselves.

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Different technology for different interactions:
Publication & distribution
Messaging & bulletins
Agreements & relationships

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Act 3.0

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Web 3.0

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Swarm Publication & distribution
Whisper Messaging & bulletins
Ethereum Agreements & relationships

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Swarm
P2P
as always!
Data sharing
a bit like BitTorrent
Semi-permanent, any size of data.

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Swarm
More agile
Peer-steering & adaption
More secure
Encryption, possibly onion routing
Better incentivisation
Zero-trust logging of contributions

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Whisper
Messaging
Think UDP
Transient publication
Think broadcast
Configurable TTL
Not strictly async or sync

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Whisper
Peer network spreads all message data
Nodes optimse peers to optimise & repair network
Secure
Private content always encrypted
Dark
Messages routed probabilistically based on attributes
Fast/durable trade-off
Shorter-lived messages routed ahead of more permanent

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Ethereum
State of Affairs
Account balances, reputation, …
Agreements
Contracts, unfinished business
Archival
“What happened for it to end up like this?”

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All together...

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Compared to what you know...

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An example:
Marketplace

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No “authorities” to trust.
No centralisation to fail.
Just individuals cooperating under agreement for
mutual benefit.

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Advert is public.
Transction is private.
Payment is agreed.
Just like Real Life.

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The Experience!

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Goals same as always:
Usable
Information-rich
Ease of interaction

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The past...

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Bitcoin

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Multibit

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Great, but it's just one app.

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Tiles

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Dock
&
Icons

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Tabs
&
Icons

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What the future might look like...

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Dock
&
URI/Page
By Richard Burton

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Dock
&
URI/Page
By Richard Burton

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Dock
&
URI/Page
By Richard Burton

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Dock
&
URI/Page
By Richard Burton

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Tiles
&
Pane
By avsa

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Information on the side...

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Tiles
&
Pane
By avsa

72. Tiles
&
Pane

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Simultaneous information from many ÐApps
ÐApps self-contained
for security & comprehension
Extensible
Lightweight
Familiar

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The new Web?