Blockchain Service overview

Hyperledger is an open-source project, led by the Linux Foundation in 2015, for the development of blockchain and related tools, aiming to provide a system that has the ability and credibility for global business transactions by developing blockchains and distributed ledgers. In particular, Hyperledger Fabric, a blockchain framework contributed by IBM and Digital Asset, is a modular architecture platform that provides blockchain nodes, smart contract execution, and consensus among members and membership services.

For more information, see the following pages:

Hyperledger: https://www.hyperledger.org
Hyperledger Fabric: https://www.hyperledger.org/use/fabric
Blockchain network: https://hyperledger-fabric.readthedocs.io/en/release-1.4/network/network.html

Blockchain Service features

Proven blockchain framework

You can create blockchain networks based on Hyperledger Fabric, the widely used open-source blockchain framework optimized for corporate business.
As Hyperledger Fabric provides enterprise-level platform functions, you can configure consortium-type blockchains safely where multiple members participate.
Blockchain Service supports Hyperledger Fabric v2.2.3.

Easy configuration and expansion of blockchain

You do not need to build complicated infrastructure or write codes to configure blockchain networks.
You can configure blockchain networks easily and conveniently with a few clicks in the web-based console, and you can expand them quickly when members and the size of a network increase.

Reasonable cost

You can configure blockchains in desired sizes with reasonable cost, from proof of concept (PoC) to operating environment.
You can manage resources flexibly depending on the number of members and usage and manage costs efficiently because you only need to pay as much as you use.

Web-based node configuration and management

With Hyperledger Fabric, you can quickly create various components of blockchain networks as needed, such as infrastructure, nodes, certificates, MSPs with just a few clicks without having to write codes.
In its intuitively configured web-based console, you can execute all tasks, from creating blockchain networks to changing and deleting resources simply and easily, and view user-configured blockchain networks, organizations, and nodes at a glance.

Full support of standard SDK

It provides access information for individual nodes required for blockchain application development, and it fully supports Native SDK of Hyperledger Fabric.
You can deploy chain codes and create ledgers through an application that uses Fabric SDK.

Powerful security

With its Sub Account function that enables you to set permissions by users in detail, various users, including blockchain network admins and smart contract developers, can work safely within the granted permissions for each of them.
It supports Hardware Security Module (HSM) and Private CA to implement a more powerful authentication and security system of Hyperledger Fabric (integration with HSM and Private CA is planned).

Guide to Blockchain Service

Blockchain Service overview: describes features, strengths, user guides, related resources, and FAQs

Blockchain Service quickstart: guides you through the entire process step-by-step

Blockchain Service prerequisites: view supported environments

Getting started with Blockchain Service: learn how to create Blockchain Service from the NAVER Cloud Platform console

Using Blockchain Service: learn how to use Blockchain Service

Dashboard: usage status of Blockchain Service
Networks: learn how to use networks
Organizations: learn how to use organizations (MSP)
Nodes: learn how to use nodes (Orderer, Peer, and CA)
Smart Contracts: learn how to use smart contracts (channels and chaincodes) and how to develop applications

Blockchain Service permissions management: learn Blockchain Service permissions management methods and policies

Blockchain Service release notes: see documentation history for Blockchain Service guides

Blockchain Service related resources

NAVER Cloud Platform provides various resources and guides to help customers understand Blockchain Service better. If you are considering whether to introduce Blockchain Service or in need of detailed information for developing data-related policy as a developer, marketer, and so on, make good use of the following resources.

Sub Account user guide: Sub Account user guide for those who need administrator accounts of various authority levels for managing Blockchain Service

Ncloud use environment guide: a guide to VPC environment and supported functions

Pricing plans, characteristics, detailed features

Latest service news: the latest news on Blockchain Service

FAQs: frequently asked questions about Blockchain Service

Check FAQs first.

Q. What is a blockchain?
A. Block is a set of transactions, and each block is created including the information of previous and current transactions. A blockchain refers to a ledger connecting each block created and is a kind of database.

blockchain-overview_ko {height="" width="70%"}

Q. What are the components of Hyperledger Fabric?
A. The components of Hyperledger Fabric are as follows:

Certificate Authority (CA): issues and manages certificates (MSP) for the authentication of organizations and users and safe communication (TLS) between nodes.

Organization: organizations authorized to participate in the network. They are defined via Membership Service Provider (MSP)

Consortium: a set of organizations participating in the network. Transaction history is shared within the consortium

Membership Service Provider (MSP): a management system for the permissions and authentication of users. Roles and permissions of a node are defined within the network

Orderer: manages the configuration information of my channels within the network, specifies the order of transactions coming from the client, creates the final block, and forwards it to the connected node

Channel: a sub-network for processing transactions of a certain group (MSP group) within a consortium

Peer: a node that participates in the network. It stores ledgers physically and executes chaincodes. It is classified as endorsing peer, committing peer, anchor peer, and leader peer, depending on its role

Client: creates transactions and checks transaction history

Chaincode: refers to smart contracts of Hyperledger Fabric. It contains the ledger's storage format, transaction conditions, and so on

Ledger: data that cannot be changed, storing all transactions occurring in a chaincode

Note

For more information on Hyperledger Fabric glossary, see the following:

Hyperledger Fabric glossary

Q. What are the precautions when configuring Blockchain Node?
A. Blockchain Service deploys and sets Hyperledger Fabric nodes to Kubernetes clusters created via Ncloud Kubernetes Service and defines the basic resource size by node types as follows. When you create a Hyperledger Fabric node and the cluster and worker node do not have enough resources, Hyperledger Fabric node creation is limited.

Node type	vCPU(Core)	Memory(MiB)	Storage(GiB)
Orderer	0.35	700	100
Peer (LevelDB)	1.1	2,800	200
Peer (CouchDB)	1.1	2,800	100
CouchDB	1.0	2,000	100
CA	0.1	200	20

Node type

vCPU(Core)

Memory(MiB)

Storage(GiB)

Orderer

0.35

700

100

Peer (LevelDB)

1.1

2,800

200

Peer (CouchDB)

1.1

2,800

100

CouchDB

1.0

2,000

100

0.1

200