Fabric

"Hyperledger is an open source collaborative effort created to advance cross-industry blockchain technologies. It is a global collaboration, hosted by The Linux Foundation, including leaders in finance, banking, IoT, supply chain, manufacturing and technology."

- Brian Behlendorf

Hyperledger

• First launched in 2016 with 30 founding members
• Governing board of Hyperledger partnered with the Linux Foundation
• 10 active, open-source blockchain projects
• Support modular designs for business solutions

Hyperledger

Fabric Overview

What is Fabric?

• Hyperledger Framework
• Records a history of transactions in a chronological ledger
• The definition as what gets transferred is called an 'asset'
• Smart contracts deployed to the ledger execute chaincode
• Uses chain code to modify assets
• Business share business logic and sign off on changes to database

What ISN'T Fabric?

• Blockchain
• Cryptocurrency
• Company

          can represent any kind of value. Each one is a key value pair with state changes recorded as transactions on the ledger.

Assets

Channels

Transactions

Private

Smart Contracts & Chaincode

1. Defines Assets
2. Transaction Instructions
3. Business Logic
4. Deployed to all Peers

Identities

Public Key Infrastructure

Fabric CA

Verify Certificate

Membership Service Provider (MSP)

Fabric Deep Dive

Types of Nodes

Peer Nodes

Ordering Nodes

Peers

Networks

• Nodes run Docker containers on VMs in the cloud or locally
• Each organization in network will run the following nodes:
  • 0-1 Ordering service nodes
  • 1 or more "peers" (can be endorsing or not)
  • 1 Certificate Authority (MSP)
  • 1 CouchDB (optional - pluggable state database)
• Join one or more channels
• 1 or more "Anchor Peers"

Network

Current State

State Database

Transaction Log

Modular

Setting up your first network

1. Install & Set Up network Docker containers
   • Install Go, Docker, Curl, Node
   • Set up Hyperledger Fabric
2. Create a global channel
3. Peers join channel
4. Peers are validated according to network config

Chaincode

Fabric Client (SDK)

Invoke

Network

Tooling

Companies

Hyperledger Momentum

Resources

1. Edx Hyperledger Intro Course
2. The Morning Paper - Hyperledger
3. Full "Intro to Hyperledger" Whitepaper
4. Software Engineering Daily Podcast
5. Read the Docs - Tutorials
6. Using Hyperledger Fabric with Ethereum

Contact

• github: gwenf

• twitter: @gwen_faraday

• email: gwenfaraday@pm.me