what is hyperledger fabric

Blockchain is a popular technology nowadays, where IBM Hyperledger (open source) is the leader in the alliance chain. IBM has the relevant courses. The following is the entire process of building hyperledger fabric in your own Ubu

Operating Environment CENTOS7 64-bit 1. CentOS Docker Installation Yum-y Install Docker-io 2. Start Docker Service Start: Service Docker start Boot from: Chkconfig Docker on View Docker versions: Docker version 3. Installation container compose: Curl-l https://github.com/docker/compose/releases/download/1.11.2/docker-compose-' uname-s '-' uname-m ' >/usr/ Local/bin/docker-compose chmod +x/usr/local/bin/docker-compose View the version number and display version information if the installati

/hyperledger/fabric/blob/master/scripts/bootstrap.shSave the content copy in the exit Give bootstrap.sh executable permissions and run $ chmod +x bootstrap.sh Configuring the Docker Accelerator The purpose of configuring the Docker accelerator is to speed up the download of the Docker image file $ curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s h

The environment required to build the fabric under the ubantu environment.Configure Ubantu virtual machine under Mac, tutorial can refer to above.When the Ubantu system is ready, start the environment setup. Environment construction Quick Start: http://hyperledger-fabric.readthedocs.io/en/release-1.1/getting_started.html Premise Install Git $ sudo apt update$ sud

Transferred from: https://www.ibm.com/developerworks/community/blogs/8d277a63-4204-4fd3-8cb8-b7cb222cd522/entry/Steps_to_ Setup_blockchain_hyperledger_fabric_0_6_development_environment_on_ubuntu?lang=zh We heard about Blockchain technology and understand their value to business. Here we would want to share our learnings with you all, acquired during setting up a single node Hyperledger blockchain de V Environment during a client engagement. This ent

I. Concepts Hyperledger is a umbrella project of open source Blockchains and related tools, started in December 2015 by the Linux Foundation, to support the collaborative development of blockchain-based ledgers. Hyperledgerfabric is a subproject based in Openblockchain denoted by IBM. Hyperledger

1, Environmental structure Description:The system uses the container to run, the construction process is simple, each component division of labor is clear:1.docker-compose:docker container management;2.Go Lang Sdk:go language development, compilation environment;3.git:git Mirror Clone and commit;4.Rest client:rest API test;The main operations of the container are: Membersrv and peer; 2. Deployment Environme

written yet) and why it failed. In other words, you can use JUnit testing as a guide to implement code correctly.Now, if it's hard to understand, don't worry; I've provided a solution in com.makotojava.learn.blockchain.chaincode.solution in case you're stuck (or want to help with the implementation by reference).Writing the Java chain codeLet's start by introducing some of the background you need to know to implement the chain code approach in Chaincodelog. The Java chain code communicates with

There is a entire library of Blockchain APIs which you can select according to the needs that suffice your application. Some Libraries is open-sourced and Some are private. For examples, IBM ' s Hyperledger Fabric Project, Ethereum, Openchain, Multichain is few of the open s

If the currency block chain technology represented by the Bitcoin is 1.0, and the contract block chain technology represented by the Ether Square is 2.0, then the Hyperledger project which realizes the complete permission control and the security guarantee will undoubtedly represent the arrival of the block Chain Technology 3.0 ERA. The

current fabric there is limited development resources, so in 1.0 will not do, may be achieved in the future. COUCHDB Installation Now let's talk about this couchdb. COUCHDB is a database of key values for a full local restful API, which means we don't need any clients, we just need to operate the database via HTTP requests. Leveldb

What has been harvested and what has been done is an important issue.This article is only to learn to exchange information, personal summary. A brief analysis of Hyperledger fabric PBFT algorithm Architecture

corresponding directory, and then enter the directory, git download source code # download Install git $ apt-get install git # Create source directory $ mkdir-p/opt/gopath/src/github.com/hyperledger $ cd/opt/ Gopath/src/github.com/hyperledger $ git clone https://github.com/hyperledger/fabric.git $ cd Fabric # Use Git

Hyperledger Fabric Trading Flow Hyperledger Fabric v1.1 provides several special chain codes to perform certain special tasks, which are known as system chain codes (Systems Chaincode). The purpose of this paper is to summarize the implementation, function and usage of these

How to contribute code to the Hyperledger Fabric project Installation Environment It is recommended to develop the code in the Ubuntu 14.04+ environment and install the following tools. git: Used to get the code; Golang 1.6+: Environment variables such as configuration $GOPATH after successful installation. Get Code First register the Linux Foundation ID and lo

the Go programming language installed and your system is configured correctly. Now you need to create a subdirectory under your $gopath/src/to store your link code program. To make things simple, we provide a simple instruction: Mkdir-p $GOPATH/src/sacc cd $GOPATH/SRC/SACC We create a source file: Touch Sacc.go Housekeeping (coded) First let's prepare the code. Like every chain code, it implements the Init and invoke functions of the chain code.

problems of the project, specific instructions can refer to/usr/lib/python2.7/site.py file: Docker-compose-f Docker-compose-cli.yaml Down Execute command Docker run-it CLI BashAbnormal: [ROOT@IZ2ZEIVRKCKULQ2DTIDZTMZ e2e_cli]# Docker exec-it CLI bash Error response from Daemon:container 1f9b6f7d709f26 3F4A67A67AD91B419B13844EFAAA4CAEB6DD571BFA829822C7 is not running Workaround: CLI: container_name:cli ... Working_dir:/opt/gopath/src/gi

# Deploy and instantiate your own chaincode to fabric: # # First write the chaincode copy to the CLI. ``` Command reference: Docker CP [OPTIONS] src_path|-Container:dest_path Docker Cp/chaincode/bdata/3a113b6c0ecf:/opt/gopath/src/github.com/hyperledger/fabric/examples/chaincode/go ``` # # Installation Bdatas = = = ``` Peer Chaincode install-n bdata-v1.0-p git

First, start the process of developing code on the Java chain 1. Make sure you have grandle tools.2. Download the binary distribution package from the http://gradle.org/gradle-download/3. Unpack, move to the location you want, add the Grandle Bin directory to the system path4. Ensure that the GRANDLE-V command can be executed, the version shown is 2.12 or higher5. Ensure Grandle daemon can be quickly created6. Make sure you've turned jdk8.0 and also m

Have a public network environment of the server can directly see Hyperledger Fabric 1.0 from scratch (ii)--Environmental Construction (public network), this article similar to the previous article, but the environment needs to build in the intranet, that is, the network is limited under the circumstances. 1: Environme