SlideShare a Scribd company logo
Build a decentralized app
with the Hedera Cryptocurrency API
feat. Payper
Gehrig Kunz, Product Marketing at Hedera
Alex Males, Hedera18 global hackathon winner
Agenda
1. Impact of micropayments
2. Hedera Hashgraph Platform
•Cryptocurrency API
•Core concepts
•Operations
3. Open source project Payper
Why decentralization?
• Broken experiences
• Monopolistic markets
• Data breaches
hedera.com
Proprietary and Confidential. © 2018-2019 Hedera Hashgraph, LLC. All rights reserved. 
4
Create free and fair
marketplaces not
controlled by a single
entity where value can
be exchanged directly
between any party.
How do we
fix this?
TECHNOLOGY
*Cryptocurrency transactions which do not require a transaction record, but can receive a transaction receipt.
*Early Access
Mainnet* is coming here
The Hedera Hashgraph platform is
ready to scale and made for developers,
offering three initial services:
•Cryptocurrency
•Smart Contracts
•File Storage
Hedera Hashgraph platform
Hedera Cryptocurrency API
Fast. 100,000+ txn/sec with finality in seconds.
Fair. Ordering without manipulation.
Low-fees. A fraction of a cent.
Core concepts
• Accounts
• Public key and more
• Have auto-renew period (fee)
• Keys & signatures
• Natively multi-sig
• Thresholds
• Hierarchical
• Receipts and records
API Operations
• Create, update, delete
• Transfer funds
• Proxy stake
• Claims
shardNum - the shard number for the new account
realmNum - the realm number for the new account
publicKey - the public key for the new account
github.com/hashgraph/hedera-sdk-java
Find a full example:
API Operations
• Create, update, delete
• Transfer funds
• Proxy stake
• Claims
Payper
P2P Micro-Payments for the
Open API Economy
● Concept for enabling trade of API-based digital
assets
● Gateway for payment verification
● Easy installation and configuration for API
providers
● Powers micro-payment front-end components
WHAT’S PAYPER?
HOW IT
WORKS
Pay-per Blog Post
Alice owns a blog
● Installs Payper Gateway
● Configures price list
● No need to change existing servers
Bob is an occasional reader
● Opens an article in the browser
● Sees a Payment Required page / notification
● Uses a micro-payments wallet or browser
extension to get access to the article
EXAMPLE USE CASE
● Verification time to zero
● API Users paid for uploading content
● Integrate with front-end components
● Other cryptocurrencies
● Potentially contribute to a standard
● GitHub
○ https://github.com/payperws
Open Source Software
WHERE WE’RE HEADED
Micro-Payments Platform
● Fast transaction confirmation
● Low fees
● Smart Contracts (for payment channels)
● Hashgraph algorithm
● Formal proofs
● Hedera Network
● gRPC / Protobuf SDK
WHY HEDERA?
Thanks!
- @gehrigkunz, Alex
● Contribute to Payper
● Start using the Cryptocurrency API at portal.hedera.com
● Get testnet access at hedera.com/testnet
● Join the community at hashgraph.org

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Webinar - Build a decentralized app with the Hedera Cryptocurrency API

  • 1. Build a decentralized app with the Hedera Cryptocurrency API feat. Payper Gehrig Kunz, Product Marketing at Hedera Alex Males, Hedera18 global hackathon winner
  • 2. Agenda 1. Impact of micropayments 2. Hedera Hashgraph Platform •Cryptocurrency API •Core concepts •Operations 3. Open source project Payper
  • 3. Why decentralization? • Broken experiences • Monopolistic markets • Data breaches
  • 4. hedera.com Proprietary and Confidential. © 2018-2019 Hedera Hashgraph, LLC. All rights reserved.  4 Create free and fair marketplaces not controlled by a single entity where value can be exchanged directly between any party. How do we fix this?
  • 5. TECHNOLOGY *Cryptocurrency transactions which do not require a transaction record, but can receive a transaction receipt.
  • 6.
  • 7.
  • 8.
  • 10. The Hedera Hashgraph platform is ready to scale and made for developers, offering three initial services: •Cryptocurrency •Smart Contracts •File Storage Hedera Hashgraph platform
  • 11. Hedera Cryptocurrency API Fast. 100,000+ txn/sec with finality in seconds. Fair. Ordering without manipulation. Low-fees. A fraction of a cent.
  • 12. Core concepts • Accounts • Public key and more • Have auto-renew period (fee) • Keys & signatures • Natively multi-sig • Thresholds • Hierarchical • Receipts and records
  • 13. API Operations • Create, update, delete • Transfer funds • Proxy stake • Claims shardNum - the shard number for the new account realmNum - the realm number for the new account publicKey - the public key for the new account github.com/hashgraph/hedera-sdk-java Find a full example:
  • 14. API Operations • Create, update, delete • Transfer funds • Proxy stake • Claims
  • 16. P2P Micro-Payments for the Open API Economy ● Concept for enabling trade of API-based digital assets ● Gateway for payment verification ● Easy installation and configuration for API providers ● Powers micro-payment front-end components WHAT’S PAYPER?
  • 18. Pay-per Blog Post Alice owns a blog ● Installs Payper Gateway ● Configures price list ● No need to change existing servers Bob is an occasional reader ● Opens an article in the browser ● Sees a Payment Required page / notification ● Uses a micro-payments wallet or browser extension to get access to the article EXAMPLE USE CASE
  • 19.
  • 20. ● Verification time to zero ● API Users paid for uploading content ● Integrate with front-end components ● Other cryptocurrencies ● Potentially contribute to a standard ● GitHub ○ https://github.com/payperws Open Source Software WHERE WE’RE HEADED
  • 21. Micro-Payments Platform ● Fast transaction confirmation ● Low fees ● Smart Contracts (for payment channels) ● Hashgraph algorithm ● Formal proofs ● Hedera Network ● gRPC / Protobuf SDK WHY HEDERA?
  • 22. Thanks! - @gehrigkunz, Alex ● Contribute to Payper ● Start using the Cryptocurrency API at portal.hedera.com ● Get testnet access at hedera.com/testnet ● Join the community at hashgraph.org