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"byfn.sh up" Error - Container Name in Use
Why am I getting the "Cannot create container for service peer0.org1.example.com: b'Conflict." error when running "byfn.sh up" to start up the BYFN Network? You are getting "Cannot create container for service peer0.org1.example.com: b'Conflict." error when running the "byfn.sh up" command, because ...
2020-05-05, 982👍, 0💬

Launch the WYFA Network
How to Launch the Hyperledger Fabric Network to run the WYFA (Writing Your First Application) tutorial? You can follow these steps to Launch the Hyperledger Fabric Network to run the WYFA (Writing Your First Application) tutorial. 1. Run the startFabric.sh script to spin up a blockchain network, cre...
2020-02-29, 981👍, 0💬

What Is Hyperledger
What Is Hyperledger? Hyperledger is an open source project for developing blockchain-based application frameworks and tools. Currently, Hyperledger is working on the following frameworks: Hyperledger Burrow v.0.21.0, 2019 - Hyperledger Burrow is a blockchain client including a built-to-specification...
2019-04-19, 977👍, 0💬

BYFN Chaincode - chaincode_example02.go
What is the chaincode in Golang used in BYFN (Build Your First Network)? The chaincode in Golang used in BYFN (Build Your First Network) is located in the chaincode_example02.go file and localed in hyperledger-binaries/fabric-sa mples/chaincode/chaincode_exam ple02/go/directory: $ cd hyperledger-bina...
2019-04-13, 976👍, 0💬

Fabric CA (Certificate Authority)
Where to find tutorials on Fabric CA (Certificate Authority)? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Fabric CA (Certificate Authority). What Is Fabric CA (Certificate Authority) Fabric CA Integration with Fabric Peers Fabric Network wi...
2019-10-27, 975👍, 0💬

Hyperledger Composer Playground
Where to find tutorials on Hyperledger Composer Playground. Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Hyperledger Composer Playground. What Is Hyperledger Composer Playground Start Hyperledger Composer Playground What Is Basic Sample Busi...
2019-04-13, 971👍, 0💬

CouchDB Container Used in Hyperledger Fabric
What is the CouchDB container used in Hyperledger Fabric network? If you are using CouchDB instead of Go LevelDB, your Hyperledger Fabric network will have another type of containers: 5. CouchDB container - There is one CouchDB container connected to a peer. Each CouchDB stores the World State for t...
2020-07-03, 970👍, 1💬

What Is Fabric CA (Certificate Authority)
What is Fabric CA (Certificate Authority)? Fabric CA (Certificate Authority) is a component of Hyperledger Fabric platform that manages certificates for Hyperledger Fabric Network as a MSP (Membership Service Provider). Similar to a standard PKI CA server, Fabric CA provides features such as: Regist...
2019-10-27, 970👍, 0💬

Download and Install Golang SDK
How to download and install Golang SDK for Hyperledger Fabric? You can follow this tutorial to download and install Golang SDK for Hyperledger Fabric. 1. Download Golang SDK: $ export GOPATH=~/go $ echo $GOPATH /home/fyicenter/go $ go get github.com/hyperledger/fabric- sdk-go2. Verify Golang SDK pac...
2020-01-21, 969👍, 0💬

"composer network install" Errors
Why am I getting errors when running the "composer network install" command? There are couple of reasons why you are getting errors when running the "composer network install" command to deploy business network BNA files. Error Example 1 - $ cd tutorial-network $ composer network install --card Peer...
2020-12-26, 967👍, 0💬

"cryptogen" Command - Generate Keys and Certificates
How to run "cryptogen" command to generate private keys and public certificates to support organizations and users needed for BYFN (Build Your First Network)? You can follow this tutorial to run "cryptogen" command to generate private keys and public certificates to support organizations and users n...
2020-10-26, 963👍, 0💬

Install PaperNet Chaincode (Smart Contract)
How to install the PaperNet Chaincode (Smart Contract), papercontract.js? If you are the MagnetoCorp administrator, you need to use the peer chaincode install command to copy the papercontract chaincode from their local machine’s file system to the file system within the target peer’s docker c...
2019-12-02, 959👍, 0💬

Start Hyperledger Composer Playground Server
How to start and stop Hyperledger Composer Playground Server? The command that represents the Hyperledger Composer Playground Server is "composer-playground". You can start the server as shown below: $ composer-playground ... INFO :LoadModule :loadModule() Loading composer-wallet-filesystem from /us...
2022-10-13, 954👍, 1💬

💬 2022-10-13 Khôi Nguyên: Thank ^^

FabricCAServices Node.js Class
What is the FabricCAServices Node.js Class? FabricCAServices is a class provided in Node.js SDK 'fabric-ca-client' module. FabricCAServices can be used by client applications to communicate with the Fabric CA server. Key properties and methods provided in FabricCAServices class are: new FabricCAServ...
2019-11-08, 951👍, 0💬

Create "PeerAdmin@hlfv1" Card Manually
How to create the "PeerAdmin@hlfv1" card manually? If you don't want to use the "createPeerAdminCard.sh" script to create the "PeerAdmin@hlfv1" card automatically, you can follow this tutorial to create it manually. 1. Create connection profile "connection.json": $ mkdir ~/card $ cd ~/card $ vi conn...
2020-07-14, 949👍, 0💬

Connet to basic-network Peer
How to connect to the peer container of the basic-network? I want to see how is the peer doing. You can use the "docker exec" command to connect to the peer container of the basic-network. 1. Run "docker exec" to create an interactive connect with the peer container: $ docker exec -it peer0.org1.exa...
2020-04-14, 946👍, 0💬

evaluate-transaction.js - Evaluate Chaincode Transaction
How to write a Node.js script to evaluate a transaction defined in the Invoke method of a chaincode? Here is sample Node.js script, evaluate-transaction.js, that uses a given user identity from the local wallet to evaluate a transaction on chaincode. /* Copyright (c) FYIcenter.com */ 'use strict'; c...
2019-04-22, 945👍, 0💬

CouchDB Server Admin Web Portal
What is CouchDB Server Admin Web Portal? If you are running BYFN (Build Your First Network) with the CouchDB option, the World State of each peer node is stored a CouchDB server running as Docker container. The CouchDB server supports an admin web portal that allows you manage the CouchDB server, it...
2019-04-19, 945👍, 0💬

Manage basic-network with cli Container
How to Manage basic-network with cli Container? You can follow this tutorial to Manage basic-network with cli Container. 1. Start all containers, including cli, defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- samples/basic-network$ docker-compose -f docker-compose.yml up ...
2020-03-15, 943👍, 0💬

Second Admin Enroll to Create Wallet
How can the second admin create his/her own certificate and save it in a wallet? You need to pass the identity name and password of "admin2" and "WSATRHlgxxnk" to the second admin to create his/her own certificate and save it in a wallet. 1. Pass identity "admin2" and "WSATRHlgxxnk" to Amy. 2. Amy i...
2019-09-16, 943👍, 0💬

Watch Chaincode Container Log
How to watch the log file of chaincode Container Log? You can follow this tutorial to watch the log file of a chaincode container: 1. Set up new terminal on the hosting system to follow the log file of the chaincode container linked to "peer0.org1": $ docker ps --all | grep dev-peer0.org1 cc7aeb60bb...
2020-06-08, 942👍, 0💬

Start CLI Container for MagnetoCorp Admin
How to Start CLI Container for the MagnetoCorp Administrator? If you are the administrator from MagnetoCorp and want to manage the PaperNet Hyperledger Fabric network, you can follow this tutorial. 1. Create a new terminal window and run the docker-compose command to start the CLI container: (magnet...
2019-12-19, 940👍, 0💬

Hyperledger Composer Tutorials
Where to find tutorials on Hyperledger Composer? I want to know how to create Hyperledger Composer business networks. Here is a large collection of tutorials to answer many frequently asked questions compiled by FYIcenter.com team about Hyperledger Composer: Introduction of Hyperledger Composer Hype...
2021-02-04, 939👍, 0💬

Generate Genesis Block for Orderer
How to generate the Generate Genesis Block for the Orderer peer? When running a Hyperledger Fabric network, orderer peers also maintains a special blockchain called the orderer system channel (or ordering system channel). If you are starting a new orderer peer, you need to generate the genesis block...
2019-08-23, 932👍, 0💬

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