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Upgrade Chaincode Instance on BYFN
How to upgrade chaincode instance on BYFN? You can follow this tutorial to upgrade the chaincode instance on BYFN. You can use this process to fix any issues with chaincode instance without destroy its data. 1. Install new version, 2.0, of the chaincode on the default peer, peer0.org1. bash-4.4# ech...
2020-09-12, ∼1296🔥, 1💬

Build and Run "Hello" Go Program
How to Build and Run "Hello" Go Program on Ubuntu? Hyperledger Fabric framework is written in Go language. So it is important to learn how build and run Go programs on Ubuntu. Here are the steps to build and run the "Hello" Go program. 1. Make sure that Go is installed. $ go version go version go1.1...
2020-05-15, ∼1293🔥, 0💬

See New Paper on CouchDB Server
How to See New Paper on CouchDB server? If you are the PaperNet admin, you may want to see the world state of the asset managed by papercontract. PaperNet uses CouchDB to store the world state and configured with a REST API on port 5984. 1. List all databases: (magnetocorp admin)$ curl http://localh...
2019-11-21, ∼1292🔥, 0💬

"docker container exec" - Execute Command on Running Container
How to Execute an extra Command on a Running Container using the "docker container exec" command? Since Linux system is a multi-tasking system, you can send an extra command to be executed on a running Alpine container. 1. Check the container status to make it is still running. fyicenter$ docker con...
2019-02-17, ∼1292🔥, 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, ∼1291🔥, 0💬

"docker start/stop" - Start and Stop Docker Containers
How to run "docker start/stop" - Start and Stop Docker Containers for BYFN (Build Your First Network)? If you have your BYFN Docker containers deployed to the Docker Engine, you can use the "docker start/stop" command to manage them. 1. Look at the status of all deployed Docker containers: $ docker ...
2020-10-10, ∼1291🔥, 0💬

Query Chaincode Property on BYFN Channel
How to Query Chaincode Property on BYFN Channel? An instance of a chaincode can be viewed as an object of a class in an execution environment. It can hold properties. You can run the "peer chaincode query" command to query the current value of a given property of a given chaincode instance. 1. Verif...
2020-09-30, ∼1291🔥, 0💬

BYFN configtx.yaml Configuration File
What is the configtx.yaml Configuration File used in BYFN (Build Your First Network)? The configtx.yaml Configuration File provides settings on how the BYFN network should be created. Here is the default copy of crypto-config.yaml provided in BYFN: # Copyright IBM Corp. All Rights Reserved. --- ####...
2020-10-26, ∼1288🔥, 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, ∼1286🔥, 0💬

"docker container rm" - Remove Container
How to remove a container from the Docker Engine with "docker container rm" command? If a container is no longer needed, you can remove it from the Docker Engine to save space using the "docker container rm" command. 1. Run "docker container list --all" command. You see 2 containers created from the...
2019-04-12, ∼1284🔥, 0💬

"composer network" Commands
What can I do with "composer network" command? "composer network" commands are part of the Composer CLI command set. It allows you to manage business networks running in the Hyperledger Composer developer environment. Here is the syntax of the "composer network" commands: $ composer network help Com...
2020-12-26, ∼1283🔥, 0💬

Verify World State in CouchDB
How to Verify World State in CouchDB container? Since peer0.org1.example.com uses the couchdb container to store the world state, you can check the current states of all assets managed by the chaincode. 1. Get database name for the chaincode "fabcar": $ curl http://localhost:5984/_all_dbs ["_replica...
2020-02-20, ∼1282🔥, 0💬

Hyperledger Composer Components
What components are included in Hyperledger Composer? Here are major components included in Hyperledger Composer: Composer Runtime - Runs on top of the Hyperledger Fabric framework to run ledger applications called business networks. Composer Playground - Runs in a Web browser providing a Hyperledge...
2021-12-28, ∼1281🔥, 0💬

"byfn.sh up" - Start Up BYFN Network
How to run "byfn.sh up" to start up the BYFN Network? You can follow this tutorial to run "byfn.sh up" to Start up the BYFN Network. The "./byfn.sh up" command automatically generates the configuration again, deploys/starts all containers to the Docker Engine, and runs a set of chaincode tests. $ cd...
2020-05-05, ∼1281🔥, 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, ∼1277🔥, 0💬

Blockchain Data Files on Peer Container
Where is the location of Blockchain Data Files on a Peer Container? We known that each peer container needs to maintain a copy of the ledger data for each channel it joined. Ledger data is divided into 2 parts: World State and Blockchain. The World State data is stored in a database, like Go LevelDB...
2020-05-29, ∼1276🔥, 0💬

Deploy ca.example.com Manually
How to Deploy ca.example.com as a Docker container manually? You can follow this tutorial to Deploy ca.example.com as a Docker container manually. 1. Verify the configuration of the ca.example.com container defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- samples/basic-netw...
2020-03-25, ∼1275🔥, 0💬

Install Docker CE on Ubuntu with "apt"
How to install Docker CE (Community Edition) on Ubuntu with "apt"? You can follow this tutorial to install Docker CE (Community Edition) on Ubuntu with the "apt" tool. 1. Get your Ubuntu codename with "lsb_release" command. fyicenter$ lsb_release -cs bionic 2. Get your system architecture name with ...
2019-04-18, ∼1271🔥, 0💬

Business Network CTO Modeling Language
Where to find tutorials on Business Network CTO Modeling Language. Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Business Network CTO Modeling Language. What Is CTO Modeling Language CTO Language Statements "participant" CTO Statement Syntax ...
2022-02-19, ∼1269🔥, 0💬

BYFN Chaincode Docker Container
What is the BYFN chaincode Docker container? The BYFN chaincode Docker container represents the running instance of the "mycc" chaincode. When "mycc" chaincode is instantiated from peer0.org1, a chaincode Docker container (shim) is deployed and started on the Docker engine. You can find chaincode co...
2020-09-15, ∼1269🔥, 0💬

Hyperledger Fabric Network
Where to find tutorials on Hyperledger Fabric Network? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Hyperledger Fabric Network. Simplest Hyperledger Fabric Network Two-Organization Hyperledger Fabric Network Multiple Ledger Peers within Orga...
2020-02-07, ∼1269🔥, 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, ∼1268🔥, 0💬

Upgrade/Downgrade Python in Conda on nvidia/cuda Docker
How to Upgrade or Downgrade Python in Conda on nvidia/cuda Docker? If you need to run a specific version of Python, you can Upgrade or Downgrade Python Conda on nvidia/cuda Docker as shown in this tutorial. 1. Attach a terminal to the running docker. fyicenter# docker exec -it my_cuda /bin/bash (bas...
2023-02-21, ∼1266🔥, 1💬

Install Hyperledger Composer on UBuntu
How to install Hyplerledger Composer on Ubuntu? You can follow this tutorial to install Hyplerledger Composer on Ubuntu 1. Install Hyplerledger Composer CLI: $ sudo npm install -g composer-cli ... installation messages ... $ composer --version v0.20.8 2. Install Hyplerledger Composer REST API Server...
2021-05-04, ∼1266🔥, 0💬

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