Short presentation about a decentralized ticket shop, that I've been working on. It's called Ticketh and is based on Ethereum

1. Building A Decentralized Ticket Shop
on the Ethereum Blockchain
Simon Dosch 05/17/2017

2. Buying a concert ticket today
“Shipment of your
barcode ticket
happens after
payment is received
and shipment is
authorized by the
event host“
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3. What about that blockchain?
We have
• A digital asset (QR-code)
permitting access to an event (i.e. concert)
• An attribution of said asset to a person
 A distributed system, enabling
the safe dis- and reattribution of tickets!
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4. TICKETHBuying tickets the cool way

5. Realtime Compiler
• Smart Contract
Development &
Deployment
Meteor Framework
• Application
Deployment
• useful Ethereum
packages
Web3 JS Library
• Communication
with the
blockchain
Metamask
• Use Ethereum
in the Chrome
browser
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6. Creating an event
• Name, Location, Date
• Ticket amount
• Price
• Resell?
• Max. resell price?
• Security deposit?
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7. Buying a ticket
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8. Refund/Offer
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9. Use
web3.eth.sign
(address, hexMessage)
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10. Validation
The event host scans
my QR code, acquiring
• my signed
message
• my ticket id
=
Using elliptic curve recovery,
deduces my public key
compares it to
the owner of [ticket id]
on the blockchain
(this is relatively fast)
Proves to blockchain that I
attended by using my
signed message
and receives the rest
of his money
(confirmation takes ~ 1min)
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11. Summary
• Control over
• Ticket resale price
• Ticket resale amount
• Security regarding
• Proof of identity at event
• Ticket ownership
• Ticket transfer
• Cancellations (contract holds money)
• Refunds (possible until x hours after event)
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12. Thank you
and also my flat mate
Immo Garlichs
for developing this with me