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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, ∼1985🔥, 0💬

What Is Basic Sample Business Network
What is Basic Sample Business Network? Basic Sample Business Network is the "Hello World" of Hyperledger Composer samples, which demonstrates the core functionality of Hyperledger Composer by changing the value of an asset. Basic Sample Business Network supports the following business object types: ... 2020-12-22, ∼1981🔥, 0💬

Deploy couchdb Container Manually
How to Deploy couchdb as a Docker container manually? You can follow this tutorial to Deploy couchdb as a Docker container manually. 1. Verify the configuration of the couchdb container defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- samples/basic-network$ more docker-com... 2020-07-03, ∼1980🔥, 1💬

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, ∼1979🔥, 0💬

Reinstall Node.js Required Modules
How to reinstall Node.js Required Modules with the new version of npm? After installing the latest version of "node" and "npm" with "nvm", you can reinstall Node.js Required Modules to run Node.js client applications again the WYFA network. 1. Remove all files in "node_modules": $ cp ~/hyperledger-b... 2020-01-04, ∼1976🔥, 0💬

Install Node.js Application Dependencies
What is Install Node.js Application Dependencies? Since the applications are written with Hyperledger Fabric Node.js SDK Isabella needs to install some dependencies, which are listed in the package.json file. (isabella)$ cd ~/hyperledger-binaries/fabric- samples(isabella)$ cd commercial-paper/organi... 2019-12-02, ∼1971🔥, 0💬

Hyperledger Composer Script File
What Is Hyperledger Composer Script File (*.js)? A Hyperledger Composer script file is a source code file that define business logics on how each transaction is processed. A script file uses the JavaScript language and the .js file extension. Here is an example of a script file from the Basic Sample... 2020-11-22, ∼1968🔥, 0💬

Issue to Install "npm 5.x" on Ubuntu 18
Why I can only install "npm 3.5.2" on Ubuntu 18? If you are running Ubuntu 18, the default "apt install npm" command will only insatlle "npm 3.5.2: $ sudo apt install npm ... installing the "npm" package $ sudo apt install npm Reading package lists... Done Building dependency tree Reading state info... 2021-04-04, ∼1965🔥, 0💬

"configtxgen" Command - Build channel.tx
How to run "configtxgen" command to build a transaction message to create the channel in BYFN (Build Your First Network)? You can follow this tutorial to run "configtxgen" command to build a transaction message to create the channel in BYFN. The "configtxgen" command file is located in the ../bin di... 2020-10-20, ∼1965🔥, 0💬

Turn on Orderer Peer Operation RESTful API
How to Turn on Orderer Peer Operation RESTful API? You can follow this tutorial to Turn on Orderer Peer Operation RESTful API. 1. Update Docker Compose YAML file, docker-compose-default.yaml to override the "operations" settings: $ cd fabric-orderer $ vi docker-compose-default.yaml # Copyright (c) F... 2019-05-14, ∼1965🔥, 0💬

What Is Blockchain
What Is Blockchain? A blockchain is a growing list of data blocks that are cryptographically chained together. A blockchain has the following main features: A data block has a header and a list of data transactions. Merkle hash tree is used to store a fingerprint of all transactions in the block hea... 2022-03-29, ∼1964🔥, 0💬

Business Network Development Concepts
Where to find tutorials on Business Network Development Concepts. Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Business Network Development Concepts. Business Network Source Code Architecture Hyperledger Composer Model File Hyperledger Compo... 2022-02-19, ∼1963🔥, 0💬

Join Peer to BYFN Network Channel
How to join the default peer to a BYFN network Channel? You can follow this tutorial to join the default peer to a BYFN network Channel. In last tutorial, we have created a transaction file, channel.tx, that contains a transaction message to create a channel called "mychannel" on the BYFN network. N... 2020-09-30, ∼1961🔥, 0💬

orderer.yaml - Orderer Peer Configuration File
What is the Orderer Peer Configuration File, orderer.yaml? The Orderer Peer Configuration File, orderer.yaml, provides settings to control the behavior of the Orderer peer. You can take a copy of the orderer.yaml provided in Fabric binary and sample package: $ cd fabric-orderer $ cp ~/hyperledger-bi... 2019-09-04, ∼1960🔥, 0💬

Remove Log Files of Docker Container
How to remove log files of a Docker container? If you keep a Docker container running for many days, it will generate many log files on your hosting system. You can follow this tutorial to remove old log files of a Docker container. 1. Get the container ID of "peer0.org1.example.com" container: $ do... 2020-05-29, ∼1958🔥, 0💬

"concept" CTO Statement Syntax
What is the syntax of the "concept" CTO Statement The "concept" statement declares a generic data type to represent secondary data entities to support primary data entities. Here is the syntax of an "concept" statement: concept type_name [extends super_type] { o|--&gt; property_type property_nam... 2021-06-19, ∼1954🔥, 0💬

Warning on Incompatible "npm" Version
Why I am getting the Incompatible "npm" Version warning with installating Hyplerledger Composer CLI on Ubuntu? You may get the Incompatible "npm" Version warning, if you install Hyplerledger Composer CLI with the "@0.20" version option: $ sudo npm install -g composer-cli@0.20 WARN engine composer-cl... 2021-04-04, ∼1954🔥, 0💬

WYFA (Writing Your First Application)
Where to find tutorials on WYFA (Writing Your First Application) Network? I need help to follow the document provided at hyperledger-fabric.readthedocs .ioWebsite. Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on WYFA (Writing Your First Applica... 2020-03-15, ∼1954🔥, 0💬

"first-network" - Building Your First Network
What is BYFN (Build Your First Network)? BYFN (Build Your First Network) is a tutorial provided in the Hyperledger Fabric "Samples, Binaries and Docker Images" package provided at http://bit.ly/2ysbOFE . After installing the binary package, the BYFN tutorial is located at ~/hyperledger-binaries/fabr... 2020-05-05, ∼1952🔥, 0💬

"asset" CTO Statement Syntax
What is the syntax of the "asset" CTO Statement The "asset" statement declares a generic data type to represent primary data entities that can be referenced with their unique IDs. Here is the syntax of an "asset" statement: [abstract] asset type_name [identified by id_name] | [extends super_type] { ... 2021-08-01, ∼1948🔥, 0💬

"composer network" - Deploy BNA File
How to deploy and start a business network BNA file to the local Hyperledger Fabric developer environment? You can use the "composer network" command to deploy and start a business network BNA file on the local Hyperledger Fabric developer environment: $ cd tutorial-network $ composer network instal... 2021-02-04, ∼1943🔥, 0💬

Connect to Local Playground Server
How to connect to my local Hyperledger Composer Playground Server? When your local Hyperledger Composer Playground Server is started, it listens to the 8080 port by default. So you can connect to the server with a Web browser on the local system, using the following address: http://localhost:8080 If... 2021-02-17, ∼1935🔥, 0💬

"composer card" Commands
What can I do with "composer card" command? "composer card" commands are part of the Composer CLI command set. It allows you to manage access cards stored in the Composer Wallet, which is located at "~/.composer/cards" directory. Here is the syntax of the "composer card" commands: $ composer card he... 2020-07-22, ∼1935🔥, 0💬

Create Identity Wallet for Isabella
How to Create Identity Wallet for Isabella at MagnetoCorp? Once Isabella gets a copy of the private key and the certificate that represents her identity, User1@org1.example.com, on the PaperNet, she needs to put them in a local wallet. Whenever Isabella runs an application, it will open the wallet a... 2019-11-21, ∼1927🔥, 0💬

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Blockchain Container EPUB General HTML JSON Microsoft Node.js PHP Python RSS Tools Visual Studio Web