When it comes to blockchain or any other technology, business use cases always come first. However, once the need for a distributed ledger-based platform is clear, how do you design a decentralized platform that adheres to the required trust and throughput requirements? In this chalk talk, we whiteboard blockchain architectures, best practices, and antipatterns for top blockchain protocols like Ethereum, Hyperledger, and Corda.

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Blockchain Architecture Design
Patterns
Lana Kalashnyk
PSA, Blockchain
Amazon Web Services
G P S C T 3 0 3
Luke Youngblood
Principal Solutions Architect
Amazon Web Services

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HODL

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Blockchain at AWS

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What is blockchain?
Peer-to-peer network
Decentralized
Disintermediated
Transactions are:
Immutable
Independently verifiable

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Why blockchain?
Distributed Trust Secure
Independently
Verifiable

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Sample combining state transition
Block1 Header
PrevHash
…
Merkle Root
<Transactions>
Block3 Header
PrevHash
…
Merkle Root
<Transactions>
Block2 Header
PrevHash
…
Merkle Root
<Transactions>

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Blockchain protocol comparison
Protocol Permissioned Permissionless Consensus Smart contract
language support
Ethereum Quorum Partiy
GETH
Proof-of-work, Proof-
of-Stake, Proof-of-
Authority
(permissionless)
Solidity
Hyperledger Fabric Yes No Kafka-based Golang
Node
Java
Hyperledger
Sawtooth
Yes No Proof-of-Elapsed-
Time (PoET)
Java
JavaScript
Python
Corda Yes No Verification,
Uniqueness
Java
Kotlin
BitCoin No Yes Proof-of-work No (**RSK)

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Perspectives

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Peer-to-peer asset distribution

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Digital assets management
Concert Tickets
Merchandise
Loyalty Systems
Offer Accepted Assets Transferred
Asset Created
Offer Created

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Typical distributed application stack
Applications
APIs
Smart contracts
Distributed ledger
Consensus

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Blockchain platform high-level architecture
IoT Thing
Notification
Management
Core blockchain platform
AnalyticsOff chain storage
Security
Membership and
identity
Consensus
Smart contract
Ledger
Transactions and
messaging
Certificate
manager
Compute
Network
Integrations

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Blockchain node architecture
AWS Cloud
VPC
Availability zone
Subnet
Subnet
Subnet
Subnet
Availability zone
Internet
gateway
NAT gatewayNAT gatewayNAT gatewayNAT gateway

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Secure proof of stake validation and custody
Internet
Key storage
Secure
validators
Peering
Secure
relays
AWS Cloud
AWS Region

18. Thank you!
© 2018, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Lana Kalashnyk
Lkalash@amazon.com
Twitter: @lana_vk
Luke Youngblood
lukey@amazon.com
Twitter: @LukeYoungblood

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