Crystal is a platform to crowdsource absolutely everything. Here's how it works.

1. 
?

2. A DecentralizedApplicationThat LetsYou Crowdsource Everything
Crystal

?

3. A group of people working together to
complete a task better than any individual
could.
Crowdsourcing


4. 4
Examples of Crowdsourcing
2,966 Websites
Design
Video
Audio
Politics
BrandInnovati
on
Code
Science
Archite
cture
Art
Advert-
ising
Car
Design
Web
Design
Advice
Consum
er
Goods

5. 5
Contests To Gain Reputation/Money
01 02 03 04
03 02 01
Contest
Creators Creatives Critics Evaluators
Subjective
Contests
Consensus
Contests
Objective
Contests
01 02 03 04
Winner
Takes All
Critical
Mass
Chicken and
Egg
Reputation
Cheats
1
2
3

6. 6
Description
The user that creates the
contest.
The user that performs
tasks.
The user that critiques
tasks.
The user that evaluates
tasks.
Reputation HonestyPoints CreativityCoins ClarityCoins AccuracyCoins
Additional Details
Honestypoints are actually
given to all participants,
based on pagerank
algorithm called RAW
RelativeRank.
CreativityCoins can be split
for cocreated items.
ClaritiyCoins calculated
based on effect on final
decision.
--
Reputation Transferable?
Users and Reputation Types
01 02 03 04
Contest
Creators Creatives Critics Evaluators

7. 7
Description
A contest that uses
subjective judgement to
rank participants.
A contest that uses expert
votes to rank participants.
A contest that uses
objective criteria to rank
participants.
A contest type that is
created using our API
Technical Details
Scoring based on judges
decision. Uses
RelativeRank to prevent
collusion. kNN algorithm to
match experts to contests.
Uses correlation
coefficients as a scoring
rule, with weighted
datapoints to prevent sybil
attacks.
Uses tools of decision
theory to redistribute
coins, with an influence
limiter on the scoring
function to prevent sybil
attacks.
Standard API functions to
describe redistribution of
reputation and rewards.
Cannot create coins, only
redistribute.
Versions
Public Optional
Private Optional
Contests in Crystal
01 02 03
Subjective
Contests
Consensus
Contests
Objective
Contests
04
Custom
Contests

8. 8
?
Winner Takes All?
$10,500$9,000
$6,000$3,000$1,500$30,000
! ! !
!!
!
01
Winner
Takes All

9. 9
Building a Community
Community
Business Sports Media
Football NewPricing Strategy Traditional
Reputation
committed
Organization to ask
initial questions
Company to handle
support and frontend
Beta period
and vote
02
Critical
Mass

10. 10
DAO Allocation
Buy tradeable tokens
that represent their
vote
Investors
Votes based on their
CrystalCoins and
HonestyPoints
Experts
Votes based on the fee
they’re paying, as well
as HonestyPoints
Contest Creators
Votes based on how
many coins their
questions are
responsible for
distributing
Non-Profits
One contractor voted
in at any given time.
Contractor can split
votes between own
stakeholders.
Contractor
03
Chicken and
Egg
20% 20% 20% 20% 20%

11. 11
Reputation Cheats?
Creating Earning Transforming Transferring
Voted on by
community
stakeholders
Earned through
non-profit contests
or competitions.
Lose a percentage
based on
similarity, and only
transform coins.
Same rules as
transforming.

12. 12
Real Life Use Cases - Product Creation
Mike’s Sustainable Toys
He’s one bad winter away from shutting down.
Mike chooses an “objective contest”. He chooses toys sold,
margin, and environmental impact as metrics, and submits those
metrics, as well as a simple written statement of what he's looking
for.
Creatives from around the world who have proven they're good at
innovating on consumer toys submit ideas, and they’re evaluated
based on Mike’s metrics.
Mike takes the top scoring toy, the Modcar, and moves forward
with design. Mike saves his company, experts get paid, and
reputation goes to the top experts. Everyone leaves happy.
Mike’s Modcars
The Sustainable Remote Control Car

13. 13
Real Life Use Cases – RFPs
Provably Fair RFP Selection
Ending broken promises and corrupt contracts
I foresee the creation of a marketplace, with
the order book composed of Proposals on
one side and DAOs RFPs on the other.
”
“
Stephen Tual
COO– Slock IT

14. 14
Real Life Use Cases –
Smart Contract Auditing
Transparent and Provably Fair
Security Audits
Creating decentralization in this crucial stage of
the dapp lifecycle
Question: What kind of code inspection tool
would have made it easier for users to
immediately see this [malicious code]?
Perhaps we need to start standardizing...”
“
Vitalik Buterin
Founder– Ethereum

15. Real Life Use Cases –
Decentralized Court
Make Fair Decisions in a
Decentralized Way
• Moderation
• Storage or distribution of funds
• Arbitration
• Data Feeds
One crypto-institution that would be very useful for
a large set of different applications is a mechanism
by which a user could ask a question, expressed in
the form of English text, and have a decentralized
mechanism… determine the answer, and then send
a callback and a log to the user who asked the
question.
”
“
Vitalik Buterin
Founder– Ethereum

16. 16
FAQ
• Are you doing a crowdsale?
• Isn't this a bit ambitious for your first product?
• How will you make money when relying on
revenue share?
• Wait, so you're saying you can sell reputation?
• Yes, once we've handled our legal obligations.
• That depends entirely on how much we make in
our crowdsale. Our first priorities are
HonestyPoints and the contest API, and we'll
work up from there.
• We will work together with the DAO to develop
the first few use cases, and get a steady stream of
revenue.
• No., you can only sell CrystalCoins. There's no
way to buy or sell reputation – at most the
people who buy CrystalCoins can earn deserved
reputation a bit faster.

17. 17
matt@getcrystal.net
http://www.getcrystal.net
Get in Touch
@mattgoldenberg