hyperledger project

: $PATH Exit Edit and enter the following command to make the changes effective: Source/etc/profile Enter the following command to see if the installation was successful: Go version If it appears: Go version go1.9.2 LINUX/AMD64 indicates a successful configuration. As for Gopath, this is the directory where the Go program runs, that is, all the go programs you write are placed in this directory. Based on the above configuration, we create a new Gopath folder in the ~ directory and then create

Images required to recompile the Docker development environment after Hyperledger/fabric new user Author: Chen Zhao Lin email:chenlin2@ms9.hinet.net Hyperledger does not belong to the public Chain, such as Bitcoin, he is a private chain that requires user review and authentication to join a blockchain transaction, which uses a CA (Certificate authority) for public key, private key, The issuance of digital

> Before learning bitcoin and Ethereum, must first learn its block structure, at that time in the bank to do hyperledger related projects, I was very neglected in the structure, only care about the smart contract, incredibly can also initially master and start Project-related development. This shows that the super-Ledger block attribute is actually weaker, and it is important that the properties of the smar

/hyperledger/fabric/examples/chaincode/java/simplesampleGradle-b Build.gradle Build 5. Use gradle-b build.gradle run SimpleSample chaincode 6. Open the third vagrant Terminal on the chain code initialization and invocation transactionsPeer Chaincode deploy-l java-n simplesample-c ' {"Args": ["Init", "a", "M", "B", "200"]} 'Peer Chaincode invoke-l java-n simplesample-c ' {"Args": ["Transfer", "a", "B", "10"]} 'Peer Chaincode query-l java-n simplesample

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

as a standalone database process with peer, so there are additional considerations for setup, management, and operation. We can consider starting with the default embedded Leveldb, which can be transferred to COUCHDB if additional complex rich queries are required. Modeling Chaincode Asset data as JSON is a good practice so that we can execute the complex rich queries we need in the future. Two. Enable Couchdb This article uses the relevant components and resources in the Fabric-samples in the

This is the Chaincode for developers chapter in the official document of Hyperledger Fabric V1.0.The first translation, the wrong place also asked netizens to point out that we learn together progress.Original address (http://hyperledger-fabric.readthedocs.io/en/latest/chaincode4ade.html) chain code is what Chaincode is a program written with go, which eventually implements a defined interface in other prog

This is a creation in Article, where the information may have evolved or changed. Hyperledger Fabric Client SDK for Go Go get-u github.com/hyperledger/fabric-sdk-go Document Https://godoc.org/github.com/hyperledger/fabric-sdk-go compatibility Fabric v1.0.1 Fabric-ca v1.0.1 Fabric-sdk-go:master:head Fabric v1.0.0 Fabric-ca v1.0.0

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 Ubuntu development environment for reference. First, the previous step diagram (the original is not carefully encrypted by the DSM, can not be restored only screenshots):2/Instructor

the code The preferred need is to determine that the go environment is installed and properly configured. For the sake of simplicity, we use the following command: Mkdir-p $GOPATH/src/asset cd $GOPATH/src/asset Next, we create the source file Touch Asset.go 2.2 Introduction Package Each Chaincode implements the Chaincode interface Package main Import ( "FMT" "Github.com/hyperledger/fabric/core/chaincode/shim" " github.com/

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 Hyperledger

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

Note: This article was first published on 2017-09-22. Hyperledger source code Analysis of Fabric introduction The Chaincode is the user chaincode,ucc, which is important for application developers, and it provides state processing logic based on the blockchain distributed ledger, which can be used to develop a variety of complex applications. Hyperledger Fabric, Chaincode runs in the Docker container by d

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: Environmental construction and testing The host environment used in this article is CentOS, the version is centos.x86_647.2, runs the fabric nod

This article address: original link Share your experience on Hyperledger smart contracts. Source Address: Chaincode_example2 In the previous setfabriconubuntu, there was no need for virtualbox and vagrant to deploy the fabric directly, and its usefulness now manifests itself ~ The operation of the smart contract Chaincode does not require multiple nodes to be started locally and can be tested directly. Then we can test the existing CHAINCODE_EXAMPLE0

variable: Enter the. BASHRC Configuration environment variable: $ sudo vim ~/. BASHRC or: $ sudo vim/etc/profile Add the following code to the last side: Export gopath=/usr/local/goexport path= $GOPATH/bin: $PATH 　　 Save, exit. To make an environment variable effective: $ source ~/. BASHRC or: $ source/etc/profile 　　 　　After viewing the version number no problem, the configuration is successful.1.3.2 node. js Download node. js $ CURL-SL https:// Install node. js sudo Install -y Nodejs 　　 Check

Environment Construction: Necessary environmental dependencies: Environment construction Quick Start: http://hyperledger-fabric.readthedocs.io/en/release-1.1/getting_started.html Premise Install Git $ sudo apt update$ sudo apt install git Installing Curl $ sudo brew install curl Install Vim $ sudo apt install vim Installing Docker $ sudo apt update$ docker --version$ sudo apt install docker.io View Docker version Information Version 1.12+ $ docker --v

first of all thanks to the dark blue habitat, this tutorial is based on his tutorial [http://www.cnblogs.com/studyzy/p/7437157.html] collation, block chain technology developed quickly, in the great God's tutorial a little to add. In addition, there are also in the learning block chain students can contact me, we learn from each other. In the first contact with Hyperledger, very confused, do not know where to start. The tutor suggested that I not on

This is a creation in Article, where the information may have evolved or changed. HyperLedger Fabcar Study notes (writing the first app based on the Super Ledger) Translated from: Http://hyperledger-fabric.rea ... Writing the first application We need to implement the following three steps First set up a development environment Learn some simple parameters of the smart contract that our app will us

This is a creation in Article, where the information may have evolved or changed. HyperLedger Fabcar Study notes (writing the first app based on the Super Ledger) Translated from: Http://hyperledger-fabric.rea ... Writing the first application We need to implement the following three steps First set up a development environment Learn some simple parameters of the smart contract that our app will us