In this personation, Hedera Product Marketing Manager Gehrig Kunz presented on the Hedera developer experience. Gehrig shared example SDK code to jumpstart your project. Gehrig also reviewed some of the resources available for developers and explained exactly how to get started building game-changing decentralized applications using Hedera Hashgraph’s network and services.

2. 2
Gehrig Kunz
Product marketing
Hedera Hashgraph
@gehrigkunz

3. Complete guide on onboarding
to a Hedera network

4. 4
Why’d we build Hedera?

5. 5
Stable
Low-latency
High-throughput
Centralized systems

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Decentralized
Immutable
Cryptographically secure
Blockchain

7. 7
Decentralized
Immutable
Cryptographically secure
Stable foundation
Low-latency
High-throughput
Hedera

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*Our mainnet is live,
but we’re still in beta.

10. PERFORMANCE
10,000+
CRYPTO TRANSACTIONS PER SECOND
$0.0001
AVERAGE USD TRANSACTION FEE
3-5 seconds
AVERAGE TRANSACTION
CONFIRMATION TIME
ADOPTIONGOVERNANCE

11. Using Hedera 101

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Get your Hedera account
1

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Public / private key pair
Account balance
Livehashes
An existing account must fund a new account

15. Mainnet
Production
Real transactions
No permission required
Testnet
For development (test ℏ)
Data can be lost
Sign up via Hedera (KYC)

16. Testnet portal.hedera.com/register
Mainnet
portal.hedera.com/register
OR
Existing account
hedera.com/hbar

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Get an SDK
2

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Z
Community supportedHedera supported
*coming soon

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Connect to a network
3

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Update .env file with
account and
network details

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portal.hedera.com
OR
docs.hedera.com/docs/mainnet
portal.hedera.com
Testnet Mainnet

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Pro tip: send to
multiple or random
nodes

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Get network status
updates
status.hedera.com
@hederastatus

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Get to know
Hedera network services
4

27. DECENTRALIZED APPLICATIONS
CRYPTOCURRENCY SMART
CONTRACTS
FILE
SERVICE
MEDIA
LEGAL
HEALTH
GAMING LOGISTICSCOMMUNICATIONS
REAL ESTATE SOCIAL CAUSESFINANCIAL
PRIVATE DLT
HEDERA
GOVERNING
COUNCIL
NETWORK
SERVICES
CONSENSUS
SERVICE
HASHGRAPH CONSENSUS

28. ⚠️ This is not a blockchain ⚠️

29. • A distributed ledger, but not a blockchain
• Combines gossip protocol with virtual voting
algorithm to efficiently reach consensus
• Asynchronous Byzantine fault tolerant
• Transactions are guaranteed to reach finality
• Only stores latest state on ledger

30. Mirror nodes
Can be run by anyone – REST API service by Hedera coming soon
Cost-effectively store and query historical data
Use for time-series data and analytics
Beta

31. App models

32. Client
Mirror node
Semi-decentralized
Server

33. Client
Mirror node
Decentralized

34. Treasury
account
Node fee
Network fee
Service fee
End User
account
Transaction Fees
Node
account
3rd Party
Application’s
account
Application fee (if any)
Transaction fee

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Confirmation mechanisms
Receipt
Generation: default | Cost: free
Whether or not the transaction was
successfully processed.
Coming soon
Records
Generation: default | Cost: $
Details like consensus timestamp or results of
a smart contract function call.
State proofs
Generation: request | Cost: $$
Documents network consensus on the
contents of record — includes signatures of
most of the network nodes.

37. Create accounts, manage hbars
using the Cryptocurrency API

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Transactions
AccountCreateTransaction()
AccountUpdateTransaction()
CryptoTransferTransaction()
AccountDeleteTransaction()

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AccountCreateTransaction( )

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Advanced key types
Key list (3/3)
Key 1
Key 2
Key 3
Threshold (1/3)
Key 1
Key 2
Key 3
Hierarchical Threshold (1/2)
Threshold Key (1/2)
• Key A
• Key List (2/2)
•Key B
•Key C
Key 3

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Queries
AccountInfoQuery()
AccountBalanceQuery()
AccountRecordQuery()
AccountClaimQuery()
Coming soon

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43. Add, manage, and delete
files using the File Service API

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Transactions
FileCreateTransaction()
FileAppendTransaction()
FileUpdateTransaction()
FileDeleteTransaction()

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Queries
FileContentsQuery()
FileInfoQuery()

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48. Run Solidity with the
Smart Contract API

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Transactions
ContractCreateTransaction()
ContractUpdateTransaction()

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Queries
ContractCallQuery()
ContractByteCodeQuery()
ContractInfoQuery()
ContractRecordsQuery()

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55. Flexibly write data to Hedera
with the Consensus Service API
Coming soon

56. So, what should I build?

57. Public distributed ledger fly wheel
Value
Data
Identity
A trusted way to
exchange value.
A trusted way to know
someone or something.
A trusted way to maintain
and validate information.

58. Intermediary landcape
Thousands of brokers / auditors act as
cost centers to create trust, while slowing
end user experiences.
Matchmaking
Medical records
Message
Mortgage
Pawnbroker
Prime brokerage
Real estate
Shipbroking
Stockbroker
Office
Broker-dealer
Business
Shipping
Auto transport
Commodity
Customs
Information
Insurance
Intellectual property
Joint venture

59. $10.00 / MONTH
STREAMING MUSIC TODAY
BATCHED PAYMENTS
TO
IP HOLDERS
$ IP HOLDERS
SONG REQUEST MUSIC STREAMING
PROVIDER

60. $10.00 / MONTH
WHO GETS A CUT?
STREAM AUDIT LOG
AUDITORS
AUDITOR CHARGES
SERVICE FEES
IP HOLDERS
SONG REQUEST
SLOW BATCHED
PAYMENTS TO
IP HOLDERS
$
MUSIC STREAMING
PROVIDER
PAYMENT
PROCESSORS$
PAYMENT PROCESSOR
CHARGES A TX FEE AND %
MUSIC
STREAMING
SUBSCRIBER

61. END USER
HEDERA NETWORK
A DECENTRALIZED SOLUTION
IMMEDIATE MICROPAYMENT
TO
STREAMING PROVIDER
IMMEDIATE
MICROPAYMENT
TO IP HOLDER
MUSIC STREAMING
PROVIDER
IP HOLDERS
SONG REQUEST

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67. Thanks! ✌️
Get started: portal.hedera.com
Join the dev discord:
hedera.com/discord
View the SDK reference:
docs.hedera.com/reference
gehrig@hedera.com
@gehrigkunz